API · x402

Signierte Preis-Attestierung: Route, Datum, Preis, Quelle, Zeitstempel und Plausibilitä…

Signierte Preis-Attestierung: Route, Datum, Preis, Quelle, Zeitstempel und Plausibilitätsprüfung (Ed25519).

by travel.hanibal-ai.com · verified provider · updated 2026-10-25

30d calls—

30d payers—

MethodHTTP

Outputjson schema

What it does

Signierte Preis-Attestierung: Route, Datum, Preis, Quelle, Zeitstempel und Plausibilitätsprüfung (Ed25519).

Tags: travel · price · attestation · x402

Call contract

Method: HTTP
Input: HTTP request
Output: json schema

No input exampleProvider did not publish one in Bazaar metadata.

Output example

{
  "version": "string",
  "id": "string",
  "issued_at": "2026-01-01T00:00:00Z",
  "expires_at": "2026-01-01T00:00:00Z",
  "issuer": {
    "did": "string",
    "key_id": "string",
    "public_key": "string",
    "alg": "string",
    "pay_to": "string"
  },
  "subject": {
    "route": "string",
    "travel_date": "string",
    "price": "string",
    "currency": "string",
    "price_scope": "string",
    "passengers": 0,
    "cabin": "string",
    "source": "string",
    "source_url": "https://example.com",
    "observed_at": "2026-01-01T00:00:00Z",
    "note": "string"
  },
  "plausibility": {
    "status": "string",
    "checks": [
      "string"
    ],
    "warnings": [
      "string"
    ]
  },
  "payment": {},
  "terms": {},
  "signature": {
    "alg": "string",
    "key_id": "string",
    "value": "string"
  }
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/71360.json for the price and payment options.
Pay. Call GET https://travel.hanibal-ai.com/api/attest. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.01	0x1cE5379a485a0bd726fce57BbfDfc316b0D35Cc4	120s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x1cE5379a485a0bd726fce57BbfDfc316b0D35Cc4",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 120
  }
]

Schemas

Output schema (JSON Schema)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "required": [
    "version",
    "id",
    "issued_at",
    "expires_at",
    "issuer",
    "subject",
    "plausibility",
    "signature"
  ],
  "properties": {
    "version": {
      "type": "string"
    },
    "id": {
      "type": "string",
      "description": "Attestation-ID (att_…)"
    },
    "issued_at": {
      "type": "string",
      "format": "date-time"
    },
    "expires_at": {
      "type": "string",
      "format": "date-time"
    },
    "issuer": {
      "type": "object",
      "properties": {
        "did": {
          "type": "string"
        },
        "key_id": {
          "type": "string"
        },
        "public_key": {
          "type": "string"
        },
        "alg": {
          "type": "string",
          "const": "Ed25519"
        },
        "pay_to": {
          "type": "string"
        }
      }
    },
    "subject": {
      "type": "object",
      "properties": {
        "route": {
          "type": "string",
          "pattern": "^[A-Z]{3}-[A-Z]{3}$"
        },
        "travel_date": {
          "type": "string",
          "format": "date"
        },
        "price": {
          "type": "string"
        },
        "currency": {
          "type": "string"
        },
        "price_scope": {
          "type": "string"
        },
        "passengers": {
          "type": "integer"
        },
        "cabin": {
          "type": [
            "string",
            "null"
          ]
        },
        "source": {
          "type": "string"
        },
        "source_url": {
          "type": [
            "string",
            "null"
          ],
          "format": "uri"
        },
        "observed_at": {
          "type": "string",
          "format": "date-time"
        },
        "note": {
          "type": [
            "string",
            "null"
          ]
        }
      }
    },
    "plausibility": {
      "type": "object",
      "properties": {
        "status": {
          "type": "string"
        },
        "checks": {
          "type": "array",
          "items": {
            "type": "string"
          }
        },
        "warnings": {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      }
    },
    "payment": {
      "type": "object"
    },
    "terms": {
      "type": "object"
    },
    "signature": {
      "type": "object",
      "required": [
        "alg",
        "key_id",
        "value"
      ],
      "properties": {
        "alg": {
          "type": "string",
          "const": "Ed25519"
        },
        "key_id": {
          "type": "string"
        },
        "value": {
          "type": "string"
        }
      }
    }
  }
}

Example shape — generated from the schema, not a captured live response

{
  "version": "string",
  "id": "string",
  "issued_at": "2026-01-01T00:00:00Z",
  "expires_at": "2026-01-01T00:00:00Z",
  "issuer": {
    "did": "string",
    "key_id": "string",
    "public_key": "string",
    "alg": "string",
    "pay_to": "string"
  },
  "subject": {
    "route": "string",
    "travel_date": "string",
    "price": "string",
    "currency": "string",
    "price_scope": "string",
    "passengers": 0,
    "cabin": "string",
    "source": "string",
    "source_url": "https://example.com",
    "observed_at": "2026-01-01T00:00:00Z",
    "note": "string"
  },
  "plausibility": {
    "status": "string",
    "checks": [
      "string"
    ],
    "warnings": [
      "string"
    ]
  },
  "payment": {},
  "terms": {},
  "signature": {
    "alg": "string",
    "key_id": "string",
    "value": "string"
  }
}

Examples

curl

curl -X GET 'https://travel.hanibal-ai.com/api/attest'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://travel.hanibal-ai.com/api/attest", {
  "method": "GET"
});
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.request("GET", "https://travel.hanibal-ai.com/api/attest")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: travel.hanibal-ai.com
Endpoint: https://travel.hanibal-ai.com/api/attest
Machine-readable: /resources/71360.json