Service overview
x402 endpoint risk preflight API by AgentSpendGuard for autonomous buyer agents before paying unknown x402 resources. Search keywords: x402 risk, x402 endpoint risk, agent payment guardrail, buyer agent spend guard, Bazaar discovery risk, API payment preflight. Checks CDP Bazaar discovery, unique payers, recent calls, price, metadata quality, network match, and returns strict JSON verdict allow/caution/block with score, reason codes, evidence, and alternatives.
Level up your agent by giving it access to thousands of services. All payable per-request via x402. No API keys, no accounts.
Paste into your agentic chat and let your agent guide you.
npx awal x402 pay "https://api-production-2800.up.railway.app/v1/tx-explain" \
--method POST \
--data '{
"chainId": "{chainId}",
"data": "{data}",
"knownSpenders": "{knownSpenders}",
"to": "{to}",
"valueWei": "{valueWei}"
}'{
"endpoint": "POST /v1/tx-explain",
"paid": true,
"query": "best x402 data APIs",
"result": [
{
"snippet": "Compact result summary.",
"title": "Example result",
"url": "https://example.com"
}
]
}API surface
3 crawlable routes
| Parameter | Type | Default | Example |
|---|---|---|---|
chainId | number | null | 8453 |
data | string | null | 0x095ea7b30000000000000000000000001111111111111111111111111111111111111111ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff |
knownSpenders | array | null | [] |
to | string | null | 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
valueWei | string | null | 0 |
| Parameter | Type | Default | Example |
|---|---|---|---|
expectedMaxPriceUsd | number | null | 1 |
expectedNetwork | string | null | eip155:8453 |
resourceUrl | string | null | https://api.oatp.cc/tools/token_risk_scan |
| Parameter | Type | Default | Example |
|---|---|---|---|
chainId | number | null | 8453 |
minHolderCount | number | null | 100 |
minLiquidityUsd | number | null | 10000 |
tokenAddress | string | null | 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
FAQ
Service
OATP · tx_explainer — Fetch a Solana transaction by signature and return a human-readable explanation: programs invoked, token balance changes, fee (SOL + USD), and a one-line summary.
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