402.com.tr

Address Intelligence

/api/x402/address-intel

EOA vs contract, ETH + USDC balance, transaction count and activity level — straight from Base RPC. Useful for counterparty and wallet checks.

• onchain
• x402
• base

4 calls · 1 payer · last 30 days

Address Trust

/api/x402/address-trust

🆕 The 'who am I dealing with?' check for agents. Reads Coinbase's ONCHAIN verification (an EAS attestation by verifications.coinbase.eth) — meaning the address is tied to a KYC'd Coinbase account, the strongest sybil-resistance signal on Base — plus the address's Basename. Returns a verified/named/anonymous verdict + trust score. Pair with sign-guard/spend-audit for a full pre-transaction gate. Identity is a signal, not proof of honesty.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Agent Wallet Audit

/api/x402/agent-wallet-audit

🆕 The complete fund-movement authority on a Base wallet in one call: ERC-20 approvals (a spender you approved can pull the token) PLUS Base Account spend permissions (the agent-era scoped recurring allowance) — one drain-surface verdict with the ERC-20 revoke queue to act on. Approval tools miss the spend permissions; spend-permission tools miss the approvals. The only combined check for agent wallets that must know their whole exposure before holding funds.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

AI Contract Risk Explainer

/api/x402/ai-contract-risk

Combines security flags with the verified ABI's function names, then Claude explains the contract's dangerous capabilities — owner can mint, pause, blacklist, upgrade or self-destruct — with a danger level. Goes beyond raw flags to read what the contract can actually do.

• ai
• x402
• base

1 call · 1 payer · last 30 days

AI Extract

/api/x402/ai-extract

Turn ANY text into clean, schema-enforced JSON: pass text= plus the fields you want (fields=name,email,price,date — up to 10) and get exactly those keys back, guaranteed-valid JSON via Claude structured outputs. Add list=true to extract EVERY repeated record (invoice lines, listings, table rows) as an array. Up to 16K chars per call. Not crypto-specific — the universal parse step for agent pipelines: pages, emails, receipts, logs.

• ai
• x402
• base

14 calls · 4 payers · last 30 days

AI Extract Batch

/api/x402/ai-extract-batch

The pipeline version of ai-extract: send up to 10 documents (text1=…&text2=… or texts= with ||| separators) and one field list — get one schema-enforced JSON object per document, in order, from a single paid call. 10 extractions for $0.10 instead of 10× the per-call overhead: built for agents parsing feeds, inboxes, scrape batches and receipt piles. Up to 6K chars per document.

• ai
• x402
• base

1 call · 1 payer · last 30 days

AI Market Brief

/api/x402/ai-market-brief

The zoom-out flagship: aggregates trending and newly-listed Base tokens, then Claude writes a concise market brief — mood, highlights, new & notable launches, and cautions (fresh/unknown tokens flagged for rug risk). One call gives a trading agent market context instead of dozens of lookups.

• ai
• x402
• base

1 call · 1 payer · last 30 days

AI Summarize

/api/x402/ai-summarize

Compress up to 16K characters of anything — articles, transcripts, email threads, reports — into 3-5 precise bullet points, one micro-payment per call. No API key, no subscription, no prompt engineering: send text=, get bullets back as clean JSON. The digest step for agent pipelines that read more than they can carry in context.

• ai
• x402
• base

1 call · 1 payer · last 30 days

AI Token Report

/api/x402/ai-token-report

The flagship report: aggregates token risk, holder concentration, price/liquidity and OFAC sanctions, then Claude synthesizes a structured verdict (avoid → favorable) with key risks and positives. One call, agent-ready intelligence you can't get free.

• ai
• x402
• base

1 call · 1 payer · last 30 days

AI Translate

/api/x402/ai-translate

Claude-quality translation as a pay-per-call primitive: send text= (up to 6K characters) and to= any language, get only the translation back — no notes, no wrapper prose, safe to pipe straight into the next step. One USDC micro-payment per call, no API key or subscription. Built for agents localizing content, parsing foreign-language sources, or serving multilingual users.

• ai
• x402
• base

1 call · 1 payer · last 30 days

AI Transaction Explainer

/api/x402/ai-tx-explain

Give a Base transaction hash and Claude explains what it actually did in plain English — the action, a risk read (failed tx, risky approval, high-value transfer), and notes. Turns raw calldata into an answer agents and humans can use.

• ai
• x402
• base

1 call · 1 payer · last 30 days

AI Wallet Report

/api/x402/ai-wallet-report

The flagship wallet report: aggregates net worth, age/activity and recent transactions, then Claude synthesizes a verdict (e.g. fresh/risky → established/active) with key observations. One call, agent-ready wallet intelligence.

• ai
• x402
• base

AI Wallet Security Audit

/api/x402/ai-wallet-security

Pulls a wallet's active token approvals and Claude writes a security audit: overall risk level, USD at risk, and concrete revoke recommendations (which token/spender and why). The wallet-safety check agents and users run before trusting an address.

• ai
• x402
• base

2 calls · 1 payer · last 30 days

/api/x402/approval-advisor

Ranks a wallet's active token approvals by USD-at-risk x unlimited-allowance x unlabelled-spender, and returns a prioritised revoke queue. Approvals are the #1 drain vector; this tells an agent exactly what to revoke first.

• onchain
• x402
• base

4 calls · 3 payers · last 30 days

B20 Access Type

/api/x402/b20-access-type

🆕 A B20 transfer policy is either a BLOCKLIST (allowed unless listed) or an ALLOWLIST (allowed ONLY if listed — a permissioned/whitelist token you can't even receive uninvited). b20-safety flags that a policy exists; this decodes its TYPE per scope (send/receive/execute/mint) — the difference between 'the issuer can block bad actors' and 'this is a permissioned RWA you can't hold uninvited'.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Announcements

/api/x402/b20-announcements

🆕 B20 Asset tokens can post on-chain announcements (Announcement: id, description, uri) — issuer notices, corporate actions, redemptions — a channel ERC-20 has no equivalent for. Reads a token's announcement feed (active vs ended) from CDP-indexed events. The issuer-communications primitive for agents holding tokenized/RWA B20 assets.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Authenticity Check

/api/x402/b20-authenticity

🆕 Run FIRST on any 'B20'. A scammer can deploy a normal contract at a vanity 0xB200… address and fake the whole B20 read surface — the B20Factory precompile is the one authority that can't be spoofed. Verifies factory registration + bytecode absence (real B20s are chain-native precompiles with no code). verdict: genuine / fake_lookalike / not_b20. The 2-cent check that keeps every other B20 answer honest.

• b20
• x402
• base

3 calls · 1 payer · last 30 days

B20 Batch Safety

/api/x402/b20-batch

Runs the B20 safety verdict across up to 5 B20 tokens in one call — each scored for freeze/seize/pause/rebase/uncapped-mint, with the worst score surfaced. For portfolio holders and agents screening several B20s at once.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Config Audit

/api/x402/b20-config-audit

🆕 The B20 misconfiguration lint. Base's docs warn: a scope bound to a NON-EXISTENT allowlist silently denies EVERYONE — transfers brick. Audits every policy scope for dangling bindings, ALWAYS_BLOCK, renounced (frozen) lists and live pauses; verdict bricked / critical_misconfig / misconfigured / clean plus a can-this-token-even-move flag. Pre-launch lint for issuers, stuck-funds guard for holders and merchants.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Control Audit

/api/x402/b20-control

🆕 b20-safety tells you WHICH powers a B20 has; this tells you WHO holds them. Reads the token's role-based access control (mint / burn / seize-via-burnBlocked / pause / admin) from onchain role events and reports the exact controllers, how centralized they are, and whether admin has been renounced. The issuer-control map an agent needs before holding a regulated Base-native asset.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Due-Diligence Dossier

/api/x402/b20-dossier

🆕 The premium tier of the B20 suite — no ERC-20 tool can produce it. Composes the full B20 picture: seize/freeze/pause/mint powers, WHO holds them (admin renounced?), allowlist-vs-blocklist access model, supply-cap dilution headroom, metadata mutability, and ACTUAL seizure history (burnBlocked) — then Claude writes an institutional due-diligence verdict: issuer-control score, seizure risk (enforced/armed/none), red flags, and a hold/avoid recommendation.

• b20
• x402
• base

3 calls · 1 payer · last 30 days

B20 Freeze Check

/api/x402/b20-freeze-check

Checks whether a specific wallet is authorized under a B20 token's transfer-sender policy. If it isn't, that wallet can't transfer and can be burnBlocked() (SEIZED) by the issuer. The personal companion to b20-safety — 'can this token freeze MY funds?'

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Pre-Trade Gate

/api/x402/b20-gate

🆕 The single call before trading a Base-native B20: seize (burnBlocked) + freeze (Policy Registry) + rebase + pause + uncapped-mint, collapsed into one GO/HOLD/STOP verdict with an auditable receipt. Pass wallet= to also check if YOUR address is already blocked on that token. The B20 tool to bind first.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Genesis Audit

/api/x402/b20-genesis-audit

🆕 createB20's initCalls run with role AND transfer-policy gates BYPASSED — a one-tx privilege window only the issuer ever gets. Reconstructs what they did in it: pre-mints (how much, to whom), role grants, policy bindings, blocklist seeding — the token's true starting conditions. verdict: blocklist_seeded / premined / configured_launch / bare_launch.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Guard

/api/x402/b20-guard

The live layer over B20 Policy Watch: a network-wide onchain webhook captures every B20 PolicyUpdated/Paused sub-second. Pass a token address for its live guard status, or call with no address for the feed of tokens that JUST attached a sender blocklist (turned seizable) across all of Base.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Token Info

/api/x402/b20-info

Complete B20 token profile straight from the precompile: variant (Asset/Stablecoin), name, symbol, decimals, total supply, supply cap, active transfer policies, pause states, and rebase. The data companion to b20-safety.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Launch Radar

/api/x402/b20-launch-radar

🆕 Lists the newest B20 tokens created on Base (from the B20Factory precompile) — variant, symbol, decimals, block. B20 is Base's native token standard and dozens launch hourly. A discovery feed for agents hunting new B20 launches early. Run b20-safety on any address before touching it — new ≠ safe.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Memo Tracker

/api/x402/b20-memo

🆕 B20 adds memos to transfers/mints/burns (transferWithMemo) for payment IDs, compliance tags and settlement correlation — a field ERC-20 has no equivalent for. Reads a token's on-chain Memo event history, optionally filtered by a specific memo (bytes32) or the caller wallet. The settlement-reconciliation primitive for agents paying over B20 stablecoins.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Metadata Integrity

/api/x402/b20-metadata

🆕 A B20 with a METADATA_ROLE holder can call updateName/updateSymbol — change its own identity after launch (an impersonation / bait-and-switch vector ERC-20 has no protocol equivalent for). Reads whether the metadata is mutable (role holder exists) AND whether it has ALREADY been renamed on-chain (NameUpdated/SymbolUpdated history). Trust the address, not the label.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Mint Watch

/api/x402/b20-mint-watch

🆕 b20-supply shows the dilution ceiling; this shows the actual printing. Every mint (incl. batchMint) in the window: amount, recipients, and the share of current supply it represents — heavy_dilution / active_minting / minor_minting / quiet. The live issuance feed for agents holding B20 stablecoins and RWAs. Pass days= (1-90, default 30).

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Peg Check

/api/x402/b20-peg

🆕 A B20 Stablecoin's currency() is SELF-DECLARED — the standard verifies nothing. This is the missing check: declared peg vs actual DEX market price. 'Says USD, trades at $0.71' in one call: on_peg / depeg_warning / depegged / no_market (the peg is a pure claim with zero price discovery) / unverifiable_fx for non-USD pegs. Run before settling in any B20 stablecoin.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Permit Inspector

/api/x402/b20-permit

🆕 Every B20 has ERC-2612 permit built in — approve a spender by signature instead of a transaction. Reads exactly what an agent needs to build a valid permit: the token's DOMAIN_SEPARATOR, the owner's current nonce (so the signed payload can't be rejected/replayed), and the EIP-712 domain/type struct. Read-only — signs nothing.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Policy Admin Watch

/api/x402/b20-policy-admin

🆕 b20-control reads the token's own roles; the address that can actually add you to a blocklist lives in the Policy Registry. This reads WHO administers each active transfer/mint policy (policyAdmin), and whether that control is being handed over (pendingPolicyAdmin) or renounced. The other half of 'who can freeze/seize you', straight from the registry.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Policy Members

/api/x402/b20-policy-members

🆕 b20-freeze-check answers one wallet; this enumerates the WHOLE list. Replays the Policy Registry's BlocklistUpdated/AllowlistUpdated events into the full membership of a B20's blocklist/allowlist: every address ever blocked or whitelisted, when, by whom, and the current member set per scope. Compliance-grade visibility no other tool provides. Pass address= (token) or policy= (registry policy ID).

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Policy Watch

/api/x402/b20-policy-watch

The B20-only rug vector: a token can launch clean and later attach a sender blocklist (PolicyUpdated) — silently becoming seizable via burnBlocked. This reads the token's full policy/pause event timeline (CDP-indexed onchain events) plus the live policy state, and tells you if — and exactly WHEN — it turned seizable.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Portfolio Guard

/api/x402/b20-portfolio

🆕 Scans a wallet's B20 (Base-native) holdings for protocol-level freeze/seize powers and whether YOUR address is ALREADY blocked on any of them — the risk no ERC-20 portfolio tool can see. Returns per-token seizable/freezable/rebase flags plus a wallet-level verdict. Built for agents holding Base positions.

• b20
• x402
• base

3 calls · 1 payer · last 30 days

B20 Rebase Tracker

/api/x402/b20-rebase

Reads a B20 Asset token's rebase multiplier — the factor that scales every holder's balance. Flags whether balances are being scaled (invisible dilution/inflation the issuer controls). Stablecoin variants return no-rebase.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Rebase History

/api/x402/b20-rebase-history

🆕 An Asset B20's multiplier rescales EVERY holder's balance in one call — no transfer, no per-account event, nothing in your tx history. b20-rebase shows today's value; this replays the full MultiplierUpdated history and flags DOWNWARD moves that silently cut every holder. The operator's rebase track record, before you hold a rebasing RWA.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Token Safety

/api/x402/b20-safety

🆕 Live — B20 is Base's native precompile token standard, and unlike ERC-20 a B20 issuer can freeze holders (Policy Registry) and even SEIZE your balance (burnBlocked) at the protocol level. This reads exactly those powers — seizable, freezable, paused, rebase, uncapped-mint — into one hold/caution/avoid verdict. The first B20-aware safety check on Base.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Seizure History

/api/x402/b20-seizure-history

🆕 Every other B20 check reads what the issuer CAN do; this reads what they HAVE done. Scans the token's actual burnBlocked seizures (the BurnedBlocked event) — whether the issuer has ever burned a blocked holder's balance, who was seized, and how much. verdict: enforced (has seized) / armed (can, hasn't) / no_seize_power. Pass wallet= for one address, or omit address= for the network-wide feed.

• b20
• x402
• base

3 calls · 1 payer · last 30 days

B20 Stablecoin Profile

/api/x402/b20-stablecoin

🆕 B20 Stablecoin tokens self-declare a fiat currency code (currency() → USD, EUR, …). Reads that declared peg alongside the issuance profile (supply, cap) and control powers (seize/freeze/pause/uncapped-mint) — a one-call 'what is this stablecoin and who controls it' for agents settling in B20 stablecoins. The currency code is the issuer's claim, not attested backing.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Supply Guard

/api/x402/b20-supply

🆕 The dilution half of B20 rug risk (b20-safety covers seizure). Reads supply cap vs minted supply (how much can still be minted) plus the on-chain SupplyCapUpdated history — an issuer that RAISED the cap diluted, or set up to dilute, holders. Uncapped mint is flagged as the worst case. Pair with b20-control to see who holds the mint role.

• b20
• x402
• base

1 call · 1 payer · last 30 days

B20 Transfer Preflight

/api/x402/b20-transfer-preflight

🆕 The per-transaction B20 rail check: pass token + from + to (+ optional executor) and get one GO/HOLD/STOP on whether this exact transfer clears NOW — sender policy resolved against the sender, receiver policy against the recipient, executor policy against the operator, plus live transfer-pause. Every other B20 tool is per-token due diligence bought once; this is the check an agent runs on every payment. No ERC-20 tool can see it.

• b20
• x402
• base

1 call · 1 payer · last 30 days

Base Block

/api/x402/base-block

🆕 One block on Base — height, hash, parent, timestamp and age in seconds, transaction count, gas used against the limit, and the base fee in gwei. Takes a block number, a 0x… block hash, or latest / finalized / safe / earliest. A block that isn't mined yet answers found:false with the reason rather than an error. Raw chain data, no interpretation.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Address Nonce

/api/x402/base-nonce

🆕 The next nonce for any Base address, plus its ETH balance and whether it is a contract. The count means different things either side of that line — transactions sent for a wallet, contracts deployed for a contract — so both are reported under their own name instead of one ambiguous number. What you need before building a transaction, or to tell a fresh address from a used one.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Base Receipt

/api/x402/base-receipt

🆕 The receipt for a Base transaction: success or reverted, block, gas used, effective gas price, the fee in wei and ETH, how many logs it emitted and which contracts emitted them. A contract deployment reports the new address. No receipt yet means pending, dropped, or never here — and it says which is possible instead of failing.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Base Transaction

/api/x402/base-tx

🆕 A Base transaction by hash, unedited: from, to, value in wei and ETH, nonce, gas, fee caps, type, and the 4-byte method selector with the calldata size. Flags a contract creation (null to) and a still-pending transaction (null block) rather than leaving you to infer either. Unknown hashes answer found:false, not an error.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Base Withdrawal Finalizer

/api/x402/base-withdrawal

🆕 Beryl (2026-06-25) cut the single-proof withdrawal window from 7 days to 5, with a dual-proof fast path at ~1 day. Given a Base withdrawal-initiation tx, this decodes the L2ToL1MessagePasser event (the withdrawalHash, target & value needed to prove/finalize on L1) and estimates the finalization windows under the post-Beryl rules. For agents managing cross-chain liquidity.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Basename Resolver

/api/x402/basename

Forward + reverse Basename resolution read from the Base L2 Resolver: turn jesse.base.eth into an address, or an address into its primary Basename. No API key required.

• onchain
• x402
• base

4 calls · 1 payer · last 30 days

Basename Profile

/api/x402/basename-profile

🆕 Resolves the complete Base identity behind an address or Basename: resolved address, avatar, description, website and social handles (X/Twitter, GitHub, Farcaster, Discord) read from Base's L2 Resolver text records. Lets an agent turn a counterparty address into a real profile — beyond just the name. Complements address-trust (verification) with the human context.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Batch Token Risk Scan

/api/x402/batch-risk

Screen up to 10 Base tokens in a single paid call — each gets a 0-100 rug-probability score, risk level and top signals, sorted riskiest-first. Built for agents triaging a watchlist or portfolio without paying per token.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Business Days

/api/x402/business-days

Add business days to a date, or count them between two dates, for ~110 countries. Knows each country's weekend (Friday-Saturday where that applies, not just Sat-Sun) and its national public holidays, and names every day it skipped. Holidays observed only in some provinces are deliberately NOT treated as national closures — they are listed separately so you can apply them when your case is regional. Built for payment terms, SLAs and delivery dates.

• business
• x402
• base

1 call · 1 payer · last 30 days

Prepaid Credits

/api/x402/buy-credits

Buy a prepaid balance in a single x402 settlement and get a secret credit token. Send it as the `x-credit-token` header on any paid service and each call debits its price from your balance — no per-call signature, no settlement latency. Built for agents that fire many checks a minute. Tiers: $0.25 (starter), $1, $5 (+10%), $20 (+20%). The token is shown once; balance lasts 180 days.

• utility
• x402
• base

10 calls · 1 payer · last 30 days

Base Chain Status

/api/x402/chain-status

Live Base chain snapshot: latest block, base fee + priority fee (Gwei), current ETH price, and the estimated USD cost of a simple ETH transfer. For agents timing or budgeting transactions.

• onchain
• x402
• base

4 calls · 4 payers · last 30 days

Commerce Escrow Status

/api/x402/commerce-escrow

🆕 First tooling for Base's Commerce Payments protocol (AuthCaptureEscrow): reconciles two-phase auth/capture payments — in escrow, captured, charged, voided, refunded, or payer-RECLAIMABLE because the operator missed the capture window. Filter by payment= (infoHash), payer=, receiver= or operator=, or omit everything for the network feed. The order-reconciliation read merchants and agents need before trusting onchain commerce.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Payment Operator Audit

/api/x402/commerce-operator-audit

🆕 Commerce Payments flows are DRIVEN by an operator — it authorizes escrow, captures for merchants and takes the fees. This audits one before you rely on it: 90-day volumes, fees taken, capture-vs-reclaim record (missed capture windows = merchants left unpaid), distinct payers and merchants. verdict: healthy_operator / mixed / sloppy_operator / no_activity. No other tool reads this new Base commerce protocol.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Company LEI

/api/x402/company-lei

Look a company up in GLEIF, the global Legal Entity Identifier register: LEI code, registered legal name, entity status, registration status, jurisdiction and address. The register's own name filter is a token search that returns thousands of unrelated rows, so matches are re-checked here and only an exact one — or one differing solely in legal form (Inc/Ltd/GmbH) — is reported as found; the rest come back as candidates.

• business
• x402
• base

1 call · 1 payer · last 30 days

Compliance Check

/api/x402/compliance-check

Combined counterparty screening for an address: direct OFAC sanctions match, EOA/contract profile, and (for contracts) risk flags — rolled into a single recommendation (blocked / review / clear). Built for compliance agents.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Contract ABI Lookup

/api/x402/contract-abi

Checks Sourcify for a Base contract's verification status and returns its ABI as function/event name lists + item count (full or partial match). No API key required.

• onchain
• x402
• base

Contract Danger Scanner

/api/x402/contract-danger

Reads a verified contract's ABI and flags owner-callable abuse functions: mint (dilute), pause (freeze exit), blacklist (block your wallet), setFee/setTax (tax you after entry), withdraw/sweep (pull funds), upgrade (swap logic). An unverified contract is itself a red flag. Diligence a price feed can't give.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Contract Identity

/api/x402/contract-info

🆕 What sits at a Base address: contract or plain wallet, and if a contract, whether it declares ERC-721 or ERC-1155 via ERC-165 or carries the ERC-20 shape, plus name, symbol, decimals and code size. Interface support is read from the contract's own declaration first and only inferred when there is none — the ordering matters, because NFTs answer totalSupply() too.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Counterparty Check

/api/x402/counterparty-check

One call, four public sources: how old the domain is (RDAP), whether mail to the contact will land (DNS), whether the name is on the OFAC list, and whether the company exists in the global LEI register. Returns a single GO / HOLD / STOP with every signal that produced it. Built for the moment an agent has to trust an invoice, a new vendor or a payment-detail change — the classic fraud pattern is a real-looking name on a domain registered weeks ago.

• business
• x402
• base

6 calls · 1 payer · last 30 days

4-Byte Selector Decoder

/api/x402/decode-selector

Resolves a 4-byte function selector (e.g. 0x70a08231) to candidate human-readable signatures via 4byte.directory. Accepts a bare selector or full calldata.

• onchain
• x402
• base

2 calls · 1 payer · last 30 days

Deep Due-Diligence

/api/x402/deep-dd

The premium flagship. One call runs the FULL battery — contract risk, holder concentration, liquidity depth, EXIT liquidity (can you actually sell), OFAC sanctions — and Claude synthesizes an institutional verdict: safety score, explicit buy/sell tradeability, liquidity & holder assessments, factors, risks, positives and a recommendation. The value is the orchestration + AI synthesis you can't get in one call anywhere else.

• ai
• x402
• base

1 call · 1 payer · last 30 days

Deployer Reputation

/api/x402/deployer-rep

Profiles the token's creator wallet: how much history it has, how much of the supply the creator still holds, and whether ownership is renounced — rolled into a 0-100 reputation score with signals. A fresh wallet holding 20% of supply with no renounce is the classic rug setup; this is the forensics layer other checks skip.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Domain Check

/api/x402/domain-check

Registration age, expiry and registry status for any domain, from RDAP — the registries' own protocol. Returns days since registration, days to expiry, registrar, EPP status codes, nameservers and DNSSEC as one GO / HOLD / STOP verdict. Domain age is the strongest cheap signal in invoice and vendor-impersonation fraud: the payment details that change always arrive from a domain registered weeks ago. Refuses rather than guessing when a registry publishes no RDAP.

• business
• x402
• base

3 calls · 2 payers · last 30 days

Email Verify

/api/x402/email-verify

Syntax + live DNS (MX/A) + disposable, role and consumer-mailbox detection, as one GO / HOLD / STOP verdict with the reasons listed. Catches throwaway inboxes, support@-style shared mailboxes and one-character domain typos (gmial.com). No SMTP probe, so mailbox existence is not claimed.

• business
• x402
• base

4 calls · 2 payers · last 30 days

Function Selector Encoder

/api/x402/encode-selector

Computes the 4-byte selector for a function signature (e.g. transfer(address,uint256) → 0xa9059cbb). The inverse of the decoder — useful for agents building or matching calldata.

• onchain
• x402
• base

2 calls · 1 payer · last 30 days

ENS Resolver

/api/x402/ens-resolve

Forward + reverse ENS resolution on Ethereum mainnet: turn vitalik.eth into an address, or an address into its primary ENS name. Complements the Basename resolver for Base.

• onchain
• x402
• base

4 calls · 2 payers · last 30 days

Exit Liquidity Check

/api/x402/exit-liquidity

Give a Base token + a trade size in USD → estimated buy AND sell price impact, whether you can unwind that size without collapsing the pool, and the largest safe exit. The hidden form of a rug isn't 'you can't buy' — it's 'you can't sell'. Built for trading agents sizing positions.

• markets
• x402
• base

3 calls · 1 payer · last 30 days

Format Convert

/api/x402/file-convert

Convert between the shapes data actually arrives in: CSV or TSV to JSON, JSON to CSV or TSV, CSV to a Markdown table, Markdown to HTML. Proper RFC 4180 parsing — quoted fields, embedded commas and newlines, doubled quotes — so a spreadsheet exported by a human does not silently come apart. Numbers and booleans get real types (turn it off with typed=false). No model call and no upstream: local parsing only.

• files
• x402
• base

4 calls · 1 payer · last 30 days

Publish Page

/api/x402/file-publish

Send Markdown (or HTML) and get back a URL that renders as a real page — headings, tables, code blocks, mobile-readable, no scripts and no external requests. The other half of an agent's output problem: file-slot is for bytes it will fetch back, this is for the report somebody has to read. Retention 1-30 days. Published on the storage origin, never on 402.com.tr.

• files
• x402
• base

1 call · 1 payer · last 30 days

Agent File Slot

/api/x402/file-slot

Get a signed upload URL and a retrieval URL for one file, in one call. Your agent PUTs the bytes straight to storage — they never pass through this API, so there is no size ceiling imposed by a serverless runtime and no proxy in the middle. Declare bytes= and the size is signed into the URL. Up to 25 MB, retention 1-30 days, unguessable key. The step every agent hits the moment it produces a report, chart, CSV or build and has nowhere to put it.

• files
• x402
• base

1 call · 1 payer · last 30 days

First Funder

/api/x402/first-funder

🆕 Funding provenance in one call. Traces a Base wallet back to its EARLIEST transaction and resolves who first funded it: a recognized exchange/bridge (real on-ramp, lower risk), an anon EOA (possible sybil/burner — trace the cluster), or a contract. Returns the first funder, whether it's a contract or EOA, the initial value, and wallet age. The sybil/origin screen no other Base tool gives — the counterparty check before you transact. wallet= required. Not financial advice.

• onchain
• x402
• base

2 calls · 1 payer · last 30 days

Fresh Bridge Check

/api/x402/fresh-bridge

🆕 Cross-chain inflow detection. Reads a wallet's recent USDC MINTS and correlates them with Circle CCTP receives to tell you whether its USDC is freshly bridged in (and from which source chain — Ethereum, Arbitrum, OP, Polygon, Solana…) vs natively issued. Freshly bridged capital is new money / a possible cross-chain hop — a real signal for trading and liquidation agents that no other Base tool surfaces. wallet= required, days= optional (default 30, max 90). Not financial advice.

• onchain
• x402
• base

7 calls · 1 payer · last 30 days

FX Convert

/api/x402/fx-convert

Convert between 30+ currencies at the European Central Bank's daily reference rate, for today or any past date. Returns the converted amount, the per-unit rate and the date the rate is actually from — the ECB publishes on business days only, so a weekend date answers with the previous business day and says so instead of pretending. Reference rates for accounting and reporting, not tradable quotes.

• business
• x402
• base

4 calls · 4 payers · last 30 days

Gas Oracle

/api/x402/gas-oracle

Returns current Base gas fees (baseFee, maxPriorityFee) and three tiered suggestions (slow, normal, fast) in Gwei, derived live from the Base RPC. Built for agents that time or cost-estimate transactions.

• onchain
• x402
• base

5 calls · 1 payer · last 30 days

Gas Sponsor Check

/api/x402/gas-payer

🆕 A smart account's gas can be paid by a PAYMASTER instead of the account itself — invisible to every 'does this wallet spend ETH' heuristic. Reads a wallet's UserOperationEvents across BOTH EntryPoints (v0.6 + v0.7): is it a smart account, its op count and success rate, and WHO sponsors its gas (self vs which paymaster, per-sponsor share). A fully-sponsored account is typically app- or agent-operated. wallet= required, days= optional (default 30, max 90). Not financial advice.

• accounts
• x402
• base

2 calls · 1 payer · last 30 days

Historical Token Price

/api/x402/historical-price

Returns the USD price of a Base token on a specific date (YYYY-MM-DD) via Covalent. For agents computing cost basis, backtests, or P&L.

• markets
• x402
• base

Holder Forensics

/api/x402/holder-forensics

Goes past 'top-10 = X%' to classify the holder base: how much the creator & owner still hold, which top holders are infrastructure (LP/CEX/bridge — benign) vs unlabelled wallets (the concentration that can actually dump the price), and the largest non-infra wallet. Separating benign from dangerous concentration is the analysis others skip.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Token Holder Distribution

/api/x402/holders

Top-10 holders with their %, holder count, concentration level (whale risk), and LP-lock %, from GoPlus. Lets agents judge how fairly a token is distributed before trading. No API key required.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Inflation Adjust

/api/x402/inflation-adjust

Restate an amount from one year in another year's money, for any country in the World Bank consumer-price series (1960 onwards). Returns the adjusted amount, the cumulative inflation and both index values so the arithmetic is checkable. The series is annual and published with a lag, so a request for a year that does not exist yet answers with the newest one available and says which. For contract comparisons, historical pricing and long-running budgets.

• business
• x402
• base

1 call · 1 payer · last 30 days

LP Lock Details

/api/x402/lp-lock

Surfaces the LP holders, how much of the LP supply is locked or burned vs pullable, the lockers, and unlock dates. Unlocked liquidity is the clearest rug setup — this shows the detail a one-line 'LP locked: yes/no' hides.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Morpho Position Health

/api/x402/morpho-health

🆕 First lending tooling in the catalog. Reads a Morpho Blue position on Base (the largest lending venue on Base) and returns its liquidation health in one call: health factor, current vs liquidation LTV, and the exact collateral price drop that triggers liquidation. Built for borrowing agents and treasuries that need to know how close they are before the market cuts them — Morpho's own API is deferred. Pass wallet= and optionally market= (defaults to cbBTC/USDC). Not financial advice.

• lending
• x402
• base

7 calls · 1 payer · last 30 days

Morpho Liquidation Feed

/api/x402/morpho-liquidatable

🆕 Built for liquidator / MEV searchers. Reconstructs the active borrower set on a Morpho Blue market from Borrow events, prices every position onchain in one multicall, and ranks them by liquidation health — flagging positions liquidatable NOW (health <= 1.0) and those one small move away, with the collateral price drop that tips each over. market= optional (defaults cbBTC/USDC), maxHealth= cutoff (default 1.1). Not financial advice.

• lending
• x402
• base

2 calls · 1 payer · last 30 days

Morpho Vault Risk

/api/x402/morpho-vault

🆕 A MetaMorpho vault spreads your deposit across Morpho Blue markets — your real risk is WHERE the curator put it and WHO can move it. Reads the vault's live allocation (concentration, per-market collateral + liquidation LTV), idle share, performance fee, timelock, and control (curator/owner/guardian, and whether one address holds both). Returns a diversified / concentrated / control_risk verdict: the read before parking funds in a yield vault. vault= required. Not financial advice.

• lending
• x402
• base

2 calls · 1 payer · last 30 days

Batch Token Prices

/api/x402/multi-price

Pass a comma-separated list of up to 10 Base token addresses and get USD price + 24h change for each in one call. Ideal for agents pricing a portfolio or watchlist.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

New Token Scanner

/api/x402/new-tokens

Returns the latest tokens profiled on Base from the DexScreener feed — address, description, and links. Great for discovery bots hunting new launches early.

• onchain
• x402
• base

2 calls · 2 payers · last 30 days

NFT Floor Price

/api/x402/nft-floor

Current floor price for a Base NFT collection (OpenSea / LooksRare) via Alchemy. Pass the collection contract address. Coverage is limited to marketplace-listed collections. For agents tracking NFT markets.

• markets
• x402
• base

1 call · 1 payer · last 30 days

Fiat Rails by Country

/api/x402/onramp-coverage

🆕 The feasibility check before you ask a user for money: which fiat-in and cash-out rails Coinbase actually runs in a country, the currencies and min/max limits for each, and how many assets across which networks. Distinguishes a country with card rails from one where crypto can only be transferred in — a difference most integrations discover only after a user fails. 122 countries covered.

• business
• x402
• base

4 calls · 2 payers · last 30 days

Fiat Onramp Quote

/api/x402/onramp-quote

🆕 Prices the same fiat purchase across EVERY payment method a country allows, and ranks them by what the buyer actually receives. On $100 in the US the spread is real: card takes 2.44, bank transfer 0.50, a funded fiat wallet nothing. Returns each rail's fee, net amount, min/max limits, and the cheapest one. Live Coinbase pricing, not a rate card. Pass address= for a payable checkout link. Not financial advice.

• business
• x402
• base

1 call · 1 payer · last 30 days

DEX Pair Info

/api/x402/pair-info

Given a Base DEX pair (pool) address, returns price, liquidity, 24h volume, buy/sell transaction counts and FDV from DexScreener. For agents analysing a specific pool's depth and activity.

• markets
• x402
• base

Paymaster Check

/api/x402/paymaster-check

🆕 Given a paymaster address, audits whether it's a healthy, active gas sponsor. Reads its UserOperationEvents across both EntryPoints: sponsored op volume, distinct accounts served, success rate, total gas sponsored, and concentration (the share coming from its single busiest app). The read to run before integrating a paymaster (Coinbase / Pimlico / Alchemy / custom), or judging who funds a counterparty's gas. paymaster= required, days= optional (default 30, max 90). Not financial advice.

• accounts
• x402
• base

11 calls · 1 payer · last 30 days

Portfolio Risk Scan

/api/x402/portfolio-scan

Pulls a wallet's holdings and runs a risk check on each, flagging which positions are honeypots / high-risk / illiquid and the USD sitting in risky tokens. One call audits the whole wallet — 'which of the things you already hold could hurt you'.

• onchain
• x402
• base

Position Health Check

/api/x402/position-health

The post-trade check everything else skips: given a token, your position size and (optionally) entry price, returns live price & P&L, whether the position can still be EXITED at that size, and the token's current rug score — combined into a healthy / watch / exit_now verdict with reasons. The risk that changes after you buy is exactly the risk holders miss.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Pre-Trade Gate

/api/x402/pre-trade-gate

The single call an agent makes before touching a Base token: token risk + sellability (honeypot/tax) + route/price-impact + deployer reputation, collapsed into one GO/HOLD/STOP verdict with an auditable receipt. Cheaper than the four checks à la carte. This is the tool to bind first.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Token Price Alert

/api/x402/price-alert

Pay once to register a price-threshold alert on any Base token. Supply target price, direction (above/below), and an https webhook URL. A polling cron (daily by default; configurable to ~minutes) checks DexScreener and POSTs your webhook when it crosses. Expires after 30 days.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Proxy / Upgrade Detector

/api/x402/proxy-check

Reads the EIP-1967 proxy slots live: is the contract upgradeable, what's the current implementation, and WHO can upgrade it. Flags the dangerous case — an EOA admin that can swap the logic at any block with no timelock/multisig. Upgradeability is a rug vector static scans miss.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Revoke Calldata Builder

/api/x402/revoke-builder

approval-advisor tells you WHAT to revoke; this builds the HOW: the ready-to-sign transaction (to + calldata) for approve(spender, 0) on a token, plus the live current allowance read from Base (flags unlimited, or 'already revoked'). Hand the result straight to a wallet or agent signer — the action half of approval hygiene.

• utility
• x402
• base

3 calls · 1 payer · last 30 days

Rug Early-Warning Monitor

/api/x402/rug-monitor

Pay once to watch a Base token's liquidity. We snapshot a baseline and, on each monitor run, POST your webhook if liquidity collapses (a liquidity pull — the actual moment of a rug). Not price moving — the pool being drained out from under you. Expires after 30 days.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Rug Probability Score

/api/x402/rug-score

Deterministic 0-100 rug-probability score combining security flags, holder concentration, LP lock and liquidity depth — with the exact signals that drove it. A fast numeric gate for trading agents. Higher = riskier.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Safe Multisig Check

/api/x402/safe-check

🆕 Multisig / treasury intelligence. Given an address: is it a Gnosis Safe, its owners and M-of-N threshold, version, activity, and — critically — its enabled MODULES. A module can move the Safe's funds via execTransactionFromModule with no owner signatures, so each one is an address with unilateral control. Returns a multisig / single_signer / has_modules verdict: the counterparty check before you trust funds to a multisig. address= required. Not financial advice.

• accounts
• x402
• base

2 calls · 1 payer · last 30 days

Sanctions Check

/api/x402/sanctions

Checks an address against the OFAC SDN list of sanctioned digital-currency addresses. Built for compliance agents and bots that must screen counterparties before transacting. Direct-address match; list refreshed regularly. No API key required.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Batch Sanctions Screening

/api/x402/sanctions-batch

Pass a comma-separated list of up to 25 addresses and get an OFAC sanctions result for each, plus the flagged subset. Built for compliance agents vetting whole counterparty lists in one call.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

OFAC Name Screening

/api/x402/sanctions-name

Sanctions screening for NAMES, not wallets. Pass a person or company; get GO / HOLD / STOP against the official U.S. Treasury OFAC SDN export, including a.k.a. aliases. Conservative by design: only a full-name match is a hit. Screening aid, not a compliance determination.

• compliance
• x402
• base

2 calls · 1 payer · last 30 days

Secure Token

/api/x402/secure-token

Generate N cryptographically-strong, url-safe random tokens server-side — session IDs, API nonces, one-time codes, coupon secrets. Pass count= for how many. A tiny paid utility for agents that need entropy without a crypto library.

• utility
• x402
• base

4 calls · 3 payers · last 30 days

Sellability Check

/api/x402/sellability

The hard honeypot question, answered three ways: security simulation (honeypot, cannot-sell-all, sell/buy tax, transfer-pausable), a LIVE transfer simulation we run ourselves from a real holder (reverts/taxed?), and exit liquidity. Returns a hard canSell verdict with reasons. Selling is where rugs hide — check before you buy.

• onchain
• x402
• base

Sign Guard

/api/x402/sign-guard

The check before the riskiest moment — signing. Decodes raw unsigned calldata (approve / permit / transfer / setApprovalForAll), shows the exact intent (who gets power over what, and whether it's UNLIMITED), and screens the destination + spender for OFAC sanctions and dangerous owner powers, in one GO/HOLD/STOP verdict + receipt. No simulation needed — pure decode + onchain risk. Catches the unlimited-approval drain vector before it's signed.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Spend Permission Auditor

/api/x402/spend-audit

🆕 Base Account spend permissions let an app or agent spend a scoped, recurring allowance from a wallet — the primitive behind autonomous agent payments on Base. This reconstructs a wallet's ACTIVE spend permissions from onchain approve/revoke events and flags the dangerous ones: unlimited allowance, no expiry, unrecognized spender. The Base-native, agent-era drain check that ERC-20 approval tools can't see.

• onchain
• x402
• base

2 calls · 1 payer · last 30 days

Swap Route + Safety

/api/x402/swap-route

Give a token and a trade size in USD → the deepest Base pool to route through, estimated price impact, a suggested slippage tolerance + minimum-out, all gated on a honeypot/sell-tax check of the token you'd receive (no point routing into something you can't sell). Moves an agent from analysis to action in one call.

• markets
• x402
• base

Token Approval Risk

/api/x402/token-approvals

Lists a wallet's active token approvals — which contracts can spend its tokens, the allowance, USD value at risk and a risk factor (revoke.cash-style). Essential wallet-security check for agents and users.

• onchain
• x402
• base

Token Balance

/api/x402/token-balance

🆕 An ERC-20 balance on Base, in raw units and in decimals, with the token's symbol and decimals resolved in the same call. Zero is flagged explicitly, since it is the commonest answer and the one most easily confused with a failed read. An address that doesn't implement balanceOf answers found:false and says so.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Token Compare

/api/x402/token-compare

Agents choose between tokens, not around them. Pass 2-5 Base token addresses → each gets a 0-100 quality score (safety-weighted: rug score first, then liquidity depth, then momentum), ranked best-first, with a named pick — or an honest 'none pass the gate'. One call returns a decision instead of a dozen data dumps.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Token Info & Socials

/api/x402/token-info

Metadata for a Base token: name, symbol, logo image, official website and social links (X/Telegram/etc.) plus price & liquidity — from DexScreener. For agents and UIs enriching a token.

• markets
• x402
• base

3 calls · 1 payer · last 30 days

Token Momentum

/api/x402/token-momentum

Price change and trading volume across 1h, 6h and 24h windows for a Base token, plus a trend read (strong_up → strong_down). Lets agents gauge momentum, not just a single 24h number.

• markets
• x402
• base

3 calls · 1 payer · last 30 days

Token Pools

/api/x402/token-pools

Lists every DEX pool for a Base token (pair address, DEX, quote symbol, price, liquidity, 24h volume), sorted by liquidity. Tells agents where — and how deep — a token can be traded.

• markets
• x402
• base

3 calls · 1 payer · last 30 days

Token Price

/api/x402/token-price

Pass a Base token contract address and get the current USD price, 24h change, liquidity, and volume from DexScreener (highest-liquidity pair auto-selected). No API key required.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Token Risk Check

/api/x402/token-risk

Pass a token contract address and get a risk score + flags (ERC-20 conformance, ownership renounce, upgradeable proxy) computed live from Base. Built for trading bots and agents that vet tokens before buying.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Token Supply

/api/x402/token-supply

🆕 totalSupply for any Base token, returned raw and scaled by its decimals, alongside the name and symbol. When a contract doesn't declare decimals the answer assumes 18 and marks that it assumed — a silent guess here quietly moves every downstream number by orders of magnitude. Non-token addresses answer found:false.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Token Transfer History

/api/x402/token-transfers

Recent transfers of a specific token for a wallet — direction (in/out), amount, USD value, counterparty, tx hash and time, via Covalent. For agents tracking token flows and cost basis.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Token Unlock Calendar

/api/x402/token-unlock

Turns raw LP-lock data into a forward calendar: each unlock with its date, the % of LP it frees, the locker (UNCX / Team Finance labelled), and days away — flagging imminent unlocks (<30 days). An LP unlock is a scheduled price event: the moment a rug becomes possible. For agents managing open positions.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Trending Tokens on Base

/api/x402/trending-tokens

Fetches the DexScreener boosts feed filtered to Base — up to 15 trending tokens with address, description, boost amount, and link. Great for discovery bots.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

TX Decode

/api/x402/tx-decode

Provide a Base transaction hash and get a structured summary: from/to, ETH value, status, gas used, block, method selector, and nonce — straight from Base RPC.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

URL to Text

/api/x402/url-extract

Pass a URL and get the page as clean text — furniture (nav, scripts, ads, footers) stripped, paragraphs preserved — plus its title, description and site name. The step every agent needs before it can reason about a page, and the one most agents can't do themselves: serverless runtimes and MCP clients have no browser and no HTML parser. Follows redirects safely, refuses non-text content, caps at 2 MB. Nothing crypto about it.

• web
• x402
• base

3 calls · 1 payer · last 30 days

URL to JSON

/api/x402/url-to-json

One call replaces two: fetches the page, strips it to readable text, then returns exactly the fields you asked for as schema-enforced JSON (fields=price,author,published — up to 10). Add list=true to pull EVERY repeated record on the page (listings, table rows, search results) as an array. Built for agents that need a fact off a page, not a pile of HTML — no browser, no parser, no scraping code.

• web
• x402
• base

1 call · 1 payer · last 30 days

Volume Authenticity Check

/api/x402/volume-check

Reads the deepest pool's 24h volume, buy/sell counts, liquidity and price move, and scores how organic the activity looks. Volume 10x+ the pool's liquidity, near-perfect buy/sell symmetry, or big volume that moves the price nowhere are the classic wash-trading signatures used to bait buyers. Returns a 0-100 suspicion score and verdict.

• markets
• x402
• base

3 calls · 1 payer · last 30 days

Wallet Activity

/api/x402/wallet-activity

The latest transactions for a Base address — hash, time, from/to, ETH value, success — via Covalent. For agents tracking what a wallet is doing.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

7702 Delegation Check

/api/x402/wallet-delegation

🆕 Since Pectra an EOA can carry EIP-7702 delegated code (the 0xef0100 designator): every call to the wallet executes the DELEGATE's contract with the wallet's funds — a malicious delegate is total takeover, invisible to approval tools. Reads the designator, resolves the delegate and verdicts it: not_delegated / delegated_known (Coinbase's EOA→SmartWallet path) / delegated_unknown (🚨) / smart_contract. The drain surface no other Base tool checks.

• onchain
• x402
• base

2 calls · 1 payer · last 30 days

Wallet Net Worth

/api/x402/wallet-networth

Complete token portfolio for a Base address with USD values: every ERC-20 the wallet holds, priced from live DEX liquidity, plus native ETH — sorted by value with a total. Holdings nobody quotes are listed and counted separately rather than silently valued at zero.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Wallet NFT Holdings

/api/x402/wallet-nfts

Lists the NFT collections a Base wallet holds — name, count and floor value — spam-filtered, via Covalent. For agents profiling a wallet's NFT exposure.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Full Wallet Portfolio

/api/x402/wallet-portfolio

Complete ERC-20 portfolio for a Base address — every non-zero token with balance, metadata and live USD value, plus a total. Token discovery via CDP Data API (Coinbase) with Alchemy fallback; USD from DexScreener.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Wallet Age & Activity

/api/x402/wallet-summary

Wallet age in days, first & last activity timestamps, and outgoing transaction count for any Base address — read straight from the Base archive, not a 30-day feed, so it dates wallets of any age. Counts and last-activity cover what the wallet SENT; inbound transfers don't raise the nonce and aren't counted. Built for sybil screening and counterparty trust checks.

• onchain
• x402
• base

1 call · 1 payer · last 30 days

Wallet Token Portfolio

/api/x402/wallet-tokens

Returns native ETH plus WETH, USDC, USDbC, DAI, cbETH balances for any Base address, enriched with live USD values via DexScreener. Only non-zero holdings are returned.

• onchain
• x402
• base

4 calls · 2 payers · last 30 days

Watchlist Diff

/api/x402/watchlist-diff

Retention in one call: pass up to 10 tokens to snapshot them and get a watchId; call again with that watchId to get only the DELTAS since last time — liquidity ±%, price ±%, became-honeypot, sell-tax spiked, liquidity pulled. The second call is worth more than the first. Built for agents holding positions that re-check daily.

• onchain
• x402
• base

3 calls · 1 payer · last 30 days

Whale Flow

/api/x402/whale-flow

Flow, not snapshot: the largest transfers of a Base token in the last 24h, classified by whether whales are sending INTO DEX pools (sell pressure) or pulling OUT (accumulation) — a net sell-pressure read that decays in hours. Complements holder-forensics ('who could dump') with 'is anyone dumping now'. CDP-indexed events.

• onchain
• x402
• base

2 calls · 2 payers · last 30 days