Monitoring · x402 · early usage

AUTO411 is a VIN lookup and vehicle data API for AI agents

by auto411-x402-prod.simonwakelin.workers.dev · discovered, not yet claimed by its owner · updated 2026-09-27

30d calls3

30d payers1

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

AUTO411 is a VIN lookup and vehicle data API for AI agents. Resolve a full VIN or year, make and model to a validated vehicle identity and configuration, then retrieve structured JSON vehicle specifications and available wheel and tire fitment including OEM tire sizes, bolt pattern / PCD, center bore, offset and thread / lug size. Returns MATCHED_SINGLE, NEEDS_IDENTITY or NO_MATCH rather than guessing ambiguous vehicles.

Tags: vin lookup · vehicle data · automotive · wheel fitment · vehicle specifications · bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-09-27

Input example from Bazaar metadata

{
  "configuration_id": 627260,
  "make": "Scion",
  "model": "FR-S",
  "year": 2016
}

Output example

{
  "canonical_vehicle": {
    "make": "Scion",
    "model": "FR-S",
    "year": 2016
  },
  "completeness": "AVAILABLE_REST_CLEARED_FITMENT_ONLY",
  "configuration": {
    "configuration_id": 627260,
    "drivetrain": "RWD"
  },
  "conflicts": [],
  "data": {
    "fitment": {
      "bolt_pattern": {
        "evidence": {
          "evidence_status": "PUBLISHABLE",
          "fact_scope": "YMM_SCOPED"
        },
        "facts": {
          "bolt_pattern": "5x100",
          "center_bore": "56.1",
          "offset": "48",
          "thread_size": "12x1.25"
        },
        "status": "PUBLISHABLE",
        "values": [
          "5x100"
        ]
      }
    }
  },
  "evidence_status": "CORROBORATED",
  "fact_scope": "CONFIGURATION_SPECIFIC",
  "missing_fields": [],
  "policy_withheld": [],
  "resolution_status": "MATCHED_SINGLE",
  "source_availability": "AVAILABLE"
}

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/38394.json for the price and payment options.
Pay. Call GET https://auto411-x402-prod.simonwakelin.workers.dev/v1/vehicle_fitment. 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: $0.1 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 3 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.1	0xa790B8d949D5b839217c4dA7cA78252A90665a4E	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xa790B8d949D5b839217c4dA7cA78252A90665a4E",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "amountUsd": 0.1,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "additionalProperties": true,
      "properties": {
        "canonical_vehicle": {
          "anyOf": [
            {
              "type": "null"
            },
            {
              "additionalProperties": true,
              "properties": {
                "make": {
                  "type": "string"
                },
                "model": {
                  "type": "string"
                },
                "year": {
                  "type": "integer"
                }
              },
              "required": [
                "year",
                "make",
                "model"
              ],
              "type": "object"
            }
          ],
          "description": "Normalized year, make and model resolved from the supplied VIN or year/make/model identity."
        },
        "choice_count": {
          "minimum": 0,
          "type": "integer"
        },
        "choices": {
          "description": "Supported candidate configurations when resolution_status is NEEDS_IDENTITY.",
          "items": {
            "additionalProperties": true,
            "properties": {
              "configuration_id": {
                "type": "integer"
              },
              "drivetrain": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "evidence_status": {
                "type": "string"
              },
              "generation": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "identity": {
                "additionalProperties": true,
                "type": "object"
              },
              "trim": {
                "type": [
                  "string",
                  "null"
                ]
              }
            },
            "required": [
              "configuration_id"
            ],
            "type": "object"
          },
          "type": "array"
        },
        "completeness": {
          "description": "Completeness state for the requested resource.",
          "type": [
            "string",
            "object"
          ]
        },
        "configuration": {
          "anyOf": [
            {
              "type": "null"
            },
            {
              "additionalProperties": true,
              "properties": {
                "configuration_id": {
                  "type": "integer"
                },
                "drivetrain": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "evidence_status": {
                  "type": "string"
                },
                "generation": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "identity": {
                  "additionalProperties": true,
                  "type": "object"
                },
                "trim": {
                  "type": [
                    "string",
                    "null"
                  ]
                }
              },
              "required": [
                "configuration_id"
              ],
              "type": "object"
            }
          ],
          "description": "Validated AUTO411 configuration when resolution_status is MATCHED_SINGLE."
        },
        "conflicts": {
          "type": "array"
        },
        "data": {
          "anyOf": [
            {
              "type": "null"
            },
            {
              "additionalProperties": true,
              "properties": {
                "fitment": {
                  "additionalProperties": true,
                  "description": "Policy-filtered OEM tire and wheel-fitment facts returned only at their supported evidence scope.",
                  "properties": {
                    "bolt_pattern": {
                      "additionalProperties": true,
                      "description": "Available normalized wheel-fitment facts.",
                      "properties": {
                        "evidence": {
                          "additionalProperties": true,
                          "properties": {
                            "evidence_status": {
                              "type": "string"
                            },
                            "fact_scope": {
                              "description": "Supported evidence scope, including YMM_SCOPED for wheel fitment.",
                              "type": "string"
                            }
                          },
                          "required": [
                            "fact_scope",
                            "evidence_status"
                          ],
                          "type": "object"
                        },
                        "facts": {
                          "additionalProperties": false,
                          "properties": {
                            "bolt_pattern": {
                              "description": "Bolt pattern / PCD, for example 5x100.",
                              "type": "string"
                            },
                            "center_bore": {
                              "description": "Center bore in the normalized value returned by AUTO411.",
                              "type": "string"
                            },
                            "offset": {
                              "description": "Wheel offset in the normalized value returned by AUTO411.",
                              "type": "string"
                            },
                            "thread_size": {
                              "description": "Thread or lug size in the normalized value returned by AUTO411.",
                              "type": "string"
                            }
                          },
                          "type": "object"
                        },
                        "status": {
                          "type": "string"
                        },
                        "values": {
                          "description": "Available bolt pattern / PCD values.",
                          "items": {
                            "type": "string"
                          },
                          "type": "array"
                        }
                      },
                      "required": [
                        "status",
                        "values"
                      ],
                      "type": "object"
                    },
                    "tires": {
                      "additionalProperties": true,
                      "description": "Available OEM tire sizes.",
                      "properties": {
                        "evidence": {
                          "additionalProperties": true,
                          "properties": {
                            "evidence_status": {
                              "type": "string"
                            },
                            "fact_scope": {
                              "description": "Supported evidence scope, including YMM_SCOPED for wheel fitment.",
                              "type": "string"
                            }
                          },
                          "required": [
                            "fact_scope",
                            "evidence_status"
                          ],
                          "type": "object"
                        },
                        "status": {
                          "type": "string"
                        },
                        "values": {
                          "items": {
                            "type": "string"
                          },
                          "type": "array"
                        }
                      },
                      "required": [
                        "status",
                        "values"
                      ],
                      "type": "object"
                    }
                  },
                  "type": "object"
                }
              },
              "required": [
                "fitment"
              ],
              "type": "object"
            }
          ],
          "description": "Policy-filtered fitment data, or null when identity is unresolved or no supported facts are available."
        },
        "evidence_status": {
          "description": "Evidence or availability state for the result.",
          "type": "string"
        },
        "fact_scope": {
          "description": "Scope at which the returned facts are supported.",
          "type": "string"
        },
        "missing_fields": {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "policy_withheld": {
          "description": "Categories withheld by the applicable AUTO411 product policy.",
          "type": "array"
        },
        "resolution_status": {
          "description": "Explicit vehicle-resolution result. Configuration-dependent facts are returned only when identity is sufficiently resolved.",
          "enum": [
            "MATCHED_SINGLE",
            "NEEDS_IDENTITY",
            "NO_MATCH",
            "UNAVAILABLE",
            "SOURCE_UNAVAILABLE"
          ],
          "type": "string"
        },
        "source_availability": {
          "enum": [
            "AVAILABLE",
            "PARTIAL",
            "UNAVAILABLE"
          ],
          "type": "string"
        }
      },
      "required": [
        "resolution_status",
        "canonical_vehicle",
        "configuration",
        "missing_fields",
        "conflicts",
        "completeness",
        "data"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

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

{
  "example": {
    "canonical_vehicle": null,
    "choice_count": 0,
    "choices": [
      {
        "configuration_id": 0,
        "drivetrain": "string",
        "evidence_status": "string",
        "generation": "string",
        "identity": {},
        "trim": "string"
      }
    ],
    "completeness": "string",
    "configuration": null,
    "conflicts": [
      "value"
    ],
    "data": null,
    "evidence_status": "string",
    "fact_scope": "string",
    "missing_fields": [
      "string"
    ],
    "policy_withheld": [
      "value"
    ],
    "resolution_status": "MATCHED_SINGLE",
    "source_availability": "AVAILABLE"
  },
  "type": "string"
}

Examples

curl

curl "https://auto411-x402-prod.simonwakelin.workers.dev/v1/vehicle_fitment"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://auto411-x402-prod.simonwakelin.workers.dev/v1/vehicle_fitment");
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.get("https://auto411-x402-prod.simonwakelin.workers.dev/v1/vehicle_fitment")
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: auto411-x402-prod.simonwakelin.workers.dev
Endpoint: https://auto411-x402-prod.simonwakelin.workers.dev/v1/vehicle_fitment
Machine-readable: /resources/38394.json