{
  "x402Version": 2,
  "id": 34768,
  "slug": "34768",
  "resource": "https://ari001.tailb4ac3a.ts.net/v1/ventures/x402_chain_reads_v1/erc20_allowance",
  "description": "Returns an ERC-20 allowance as a uint256 for a token, owner and spender on Base, read from the contract via eth_call.",
  "type": "http",
  "serviceName": "ERC-20 Allowance",
  "resourceType": "Blockchain Data",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xBF324F1F5b648a67905A86aF3E1093C667EAa035",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "3000",
      "amountUsd": 0.003,
      "maxTimeoutSeconds": 60
    }
  ],
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
            "spender": "0x000000000022D473030F116dDEE9F6B43aC78BA3",
            "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
          },
          "type": "http"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "owner": {
                    "description": "0x + 40 hex",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  },
                  "spender": {
                    "description": "0x + 40 hex",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  },
                  "token": {
                    "description": "ERC-20 contract, 0x + 40 hex",
                    "pattern": "^0x[0-9a-fA-F]{40}$",
                    "type": "string"
                  }
                },
                "type": "object"
              },
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            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "erc20",
    "token",
    "balance",
    "base",
    "bazaar"
  ],
  "sourceHost": "ari001.tailb4ac3a.ts.net",
  "lastUpdated": "2026-10-12T18:06:01.42Z",
  "quality": {
    "calls30d": 4,
    "uniquePayers30d": 2,
    "lastCalledAt": "2026-10-12T18:06:00.24Z"
  },
  "metadata": {
    "serviceName": "ERC-20 Allowance",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "owner": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
              "spender": "0x000000000022D473030F116dDEE9F6B43aC78BA3",
              "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "owner": {
                      "description": "0x + 40 hex",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    },
                    "spender": {
                      "description": "0x + 40 hex",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    },
                    "token": {
                      "description": "ERC-20 contract, 0x + 40 hex",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
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                "method"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "ari001.tailb4ac3a.ts.net",
    "manifest_name": "ari001.tailb4ac3a.ts.net",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  }
}