payments-intel-production.up.railway.app

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "links": {
    "openapi": "https://payments-intel-production.up.railway.app/openapi.json",
    "llms_txt": "https://payments-intel-production.up.railway.app/llms.txt",
    "free_examples": "https://payments-intel-production.up.railway.app/v1/examples",
    "free_provider_index": "https://payments-intel-production.up.railway.app/v1/providers"
  },
  "returns": "What are the basic facts of this chain (CAIP-2 id, gas token, explorer, x402/MPP settlement, stablecoins)?",
  "endpoint": "https://payments-intel-production.up.railway.app/v1/chain",
  "price_usd": 0.001,
  "parameters": [
    {
      "name": "chain",
      "example": "base",
      "required": true,
      "description": "Chain slug, name or CAIP-2 id, e.g. base, solana, eip155:8453"
    }
  ],
  "description": "Cited chain facts from a prepared dataset: CAIP-2 chain id, gas token, finality class, block explorer, whether x402 and MPP settle there, and stablecoins. Fields not established from a source are the string \"unknown\". Unknown chains and malformed input return 404/400 and are never charged.",
  "request_check": {
    "error": "chain is required, e.g. base, solana, eip155:8453",
    "valid": false
  },
  "example_request": "https://payments-intel-production.up.railway.app/v1/chain?chain=base",
  "response_shape_sample": {
    "note": "<string>",
    "as_of": "<string>",
    "chain": {
      "name": "<string>",
      "slug": "<string>",
      "as_of": "<string>",
      "notes": [
        "<string>",
        "..."
      ],
      "source": [
        {
          "url": "<string>",
          "fact": "<string>"
        },
        "..."
      ],
      "chain_id": "<string>",
      "gas_token": "<string>",
      "mpp_settles": "<string>",
      "stablecoins": [
        "<string>",
        "..."
      ],
      "x402_settles": "<boolean>",
      "block_explorer": "<string>",
      "finality_class": "<string>"
    }
  }
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x4421dea0F91E67608B52BCE35D9fb2a3574e4453",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog

—

Last indexed by Roundhouse

2026-10-20 18:15Z

Last enriched (probe, favicon, geo)

2026-10-20 18:45Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402