{
  "x402Version": 2,
  "id": 1676,
  "slug": "1676",
  "resource": "https://agent402.tools/v1/metered/messages",
  "description": "Anthropic Messages API billed per request from what the call costs: the 402 quotes exact-BPE input (system + messages + tools) plus your max_tokens at the model's list price, times 1.15, from $0.001 up to a $2 per-call cap. Point the Anthropic SDK (or any Messages-format client) at base_url https://agent402.tools/v1/metered. Any model from the flat tiers (GET /v1/models). Pay the quote over x402 exact, or authorize it as a ceiling over upto, credits or card and settle actual usage.",
  "type": "http",
  "accepts": [
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      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:137",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:42161",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:143",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:43114",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:1329",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:10",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
      "amount": "2885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:4663",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
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      "network": "eip155:42220",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
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      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "upto",
      "network": "eip155:8453",
      "payTo": "0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "J7aN3PLJnTCF5qpEnvJHJsnCjcGuqC2rYtEM8Gv3xwg",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "stellar:pubnet",
      "payTo": "GDNJXCKW7ZM7GEEVP674TWPU26YJNBQ2FI4ZIPRKTPTNUEJMDHFJWWRL",
      "asset": "CCW67TSZV3SSS2HXMBQ5JFGCKJNXKZM7UQUWUZPUTHXSTZLEO7SJMI75",
      "amount": "18850",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
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      "asset": "31566704",
      "amount": "1885",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "max_tokens": 256,
            "messages": [
              {
                "content": "Summarize x402 in one sentence.",
                "role": "user"
              }
            ],
            "model": "anthropic/claude-haiku-4.5"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "content": [
              {
                "text": "x402 is an HTTP-native way for agents to pay per request with USDC.",
                "type": "text"
              }
            ],
            "id": "msg_…",
            "model": "anthropic/claude-sonnet-5",
            "role": "assistant",
            "stop_reason": "end_turn",
            "type": "message",
            "usage": {
              "input_tokens": 14,
              "output_tokens": 18
            }
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "effort": {
                    "description": "Optional depth control for Claude 4.7+ (Opus 5, Sonnet 5, Fable 5.1): low | medium | high | xhigh | max, validated against the model's own list (GET /v1/models). Not accepted on Haiku 4.5 and older, which take thinking.budget_tokens instead",
                    "type": "string"
                  },
                  "max_tokens": {
                    "description": "Required by the Messages API; clamped to the tier's output cap",
                    "type": "integer"
                  },
                  "messages": {
                    "description": "Anthropic messages: {role: user|assistant, content: string | [text|image|tool_use|tool_result blocks]}",
                    "type": "array"
                  },
                  "model": {
                    "description": "Model id (OpenRouter naming, e.g. anthropic/claude-sonnet-5) - allowlisted per tier; omit (or \"auto\") on the auto tier",
                    "type": "string"
                  },
                  "stream": {
                    "description": "Anthropic SSE (message_start … message_stop)",
                    "type": "boolean"
                  },
                  "system": {
                    "description": "Optional system prompt (string or text blocks)",
                    "type": "string"
                  },
                  "thinking": {
                    "description": "Optional {type:\"enabled\", budget_tokens} | {type:\"adaptive\"} | {type:\"disabled\"} - thinking tokens are output tokens. On Claude 4.7+ (Opus 5, Sonnet 5, Fable 5.1) thinking is adaptive and `effort` is the depth control; a budget_tokens value is advisory there",
                    "type": "object"
                  },
                  "tools": {
                    "description": "Optional client tools {name, description, input_schema}; server/built-in tools are not served",
                    "type": "array"
                  },
                  "zdr": {
                    "description": "Optional - zero-data-retention providers only",
                    "type": "boolean"
                  }
                },
                "required": [
                  "max_tokens",
                  "messages"
                ]
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "content": {
                    "items": {
                      "properties": {
                        "text": {
                          "type": "string"
                        },
                        "type": {
                          "type": "string"
                        }
                      },
                      "type": "object"
                    },
                    "type": "array"
                  },
                  "id": {
                    "type": "string"
                  },
                  "model": {
                    "type": "string"
                  },
                  "role": {
                    "type": "string"
                  },
                  "stop_reason": {
                    "type": "string"
                  },
                  "type": {
                    "type": "string"
                  },
                  "usage": {
                    "properties": {
                      "input_tokens": {
                        "type": "integer"
                      },
                      "output_tokens": {
                        "type": "integer"
                      }
                    },
                    "type": "object"
                  }
                },
                "required": [
                  "id",
                  "type",
                  "role",
                  "model",
                  "content",
                  "stop_reason",
                  "usage"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "builder-code": {
      "info": {
        "a": "bc_b4aw4uzd"
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "a": {
            "description": "App builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "s": {
            "description": "Service builder codes",
            "items": {
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "maxItems": 11,
            "type": "array"
          },
          "w": {
            "description": "Wallet builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          }
        },
        "type": "object"
      }
    },
    "payment-identifier": {
      "info": {
        "required": false
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "id": {
            "maxLength": 128,
            "minLength": 16,
            "pattern": "^[a-zA-Z0-9_-]+$",
            "type": "string"
          },
          "required": {
            "type": "boolean"
          }
        },
        "required": [
          "required"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar",
    "builder-code",
    "payment-identifier"
  ],
  "sourceHost": "agent402.tools",
  "lastUpdated": "2026-09-18T19:46:50.808Z",
  "quality": {
    "calls30d": 46,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-18T19:46:50.593Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "agent402.tools",
    "manifest_name": "agent402.tools",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}