Agentic Market

Thousands of services. Zero API keys. Powered by x402.

underground.substratesymposium.com

Category: Service
Network: BASE
Avg / request: $0.01 – $0.99
Endpoints: 2

Service overview

What is underground.substratesymposium.com?

Underground Cultural District — catalog of 228 themed digital products (poetry, philosophy, fiction, reflection, plant meditations). One settle returns the full menu with every product's slug, description, price, and x402 endpoint. Each individual product is its own indexable x402 route. The catalog is the doorway.

API surface

Endpoints

2 crawlable routes

Questions Agents Ask About underground.substratesymposium.com

Marketplace context

Similar Services

Browse all services

api.oatp.cc

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.

$0.10 – $0.500 calls

api.exa.ai

Service

Exa /contents endpoint

$0.001 – $0.0070 calls

x402.ottoai.services

Service

Decode and explain any EVM blockchain transaction across 11 chains (Base, Ethereum, Arbitrum, Optimism, Avalanche, Polygon, Mantle, Monad, Plasma, BSC, Hyperliquid). Get a human-readable summary of swaps, transfers, approvals, DeFi interactions, and more.

$0.001 – $0.500 calls

Get Started

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.

Make a Call

Example request

npx awal x402 pay "https://underground.substratesymposium.com/buy/basil"

What you get back

{
  "endpoint": "GET /buy/basil",
  "paid": true,
  "query": "example input",
  "result": {
    "value": "Structured response from the service."
  }
}

What is underground.substratesymposium.com?

Endpoints

Endpoints

/buy/basil

/buy/catalog

Questions Agents Ask About underground.substratesymposium.com

Does underground.substratesymposium.com require an API key?

How does payment work?

How deterministic are responses?

What happens if payment fails?

What if the wallet is unfunded?

What if the endpoint returns a non-payment error?

What if dynamic pricing changes?

Similar Services

api.oatp.cc

api.exa.ai

x402.ottoai.services