{
  "x402Version": 2,
  "id": 8065,
  "slug": "8065",
  "resource": "https://flat-rate-llm.kikoribera03.workers.dev/v1/evm/chains",
  "description": "Live health of every supported chain in one call: chain id, block height and how stale the head is. Use it to pick a chain that is actually responding. Via eth_getBlockByNumber.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:137",
      "payTo": "0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff",
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:42161",
      "payTo": "0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff",
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {},
          "type": "http"
        },
        "output": {
          "example": {
            "chains": [
              {
                "ageSeconds": 2,
                "blockNumber": 51047956,
                "chain": "eip155:8453",
                "ok": true
              }
            ]
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {},
                "required": [],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "flat-rate-llm.kikoribera03.workers.dev",
  "lastUpdated": "2026-09-10T13:13:46.296Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-10T13:13:46.141Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "flat-rate-llm.kikoribera03.workers.dev",
    "manifest_name": "flat-rate-llm.kikoribera03.workers.dev",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}