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Api Endpoint

TraceFast

TraceFast knowledge graph: the evidence behind one proven relation between two addresses — the facts checked with their expected and observed values, the conditions that had to be false, the sources read, and the block the evaluation was pinned to. Path: address, attribute_id, object. Docs: https://docs.tracefast.xyz/api/address-relation-proof.md

Open interactive test console

Offering

Provider
mpp.tracefast.xyz
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Security
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://mpp.tracefast.xyz/api/v1/chains/1/entities/:address/relations/:attribute_id/:object/proof
MIME type
application/json
First seen
2026-10-16T01:52:52.778Z
Last seen
Tags
blockchain, Ethereum, address-intelligence, labels, entities

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.025 USDC
Atomic price: 25000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "25000",
    "payTo": "0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e"
  }
]

Observed health

Status
Healthy
Latest latency
251 ms
Average latency
3197 ms
HTTP status
402
Last checked
Reachability
85.7% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "method": "GET",
  "pathParams": {
    "address": "0x7a250d5630b4cf539739df2c5dacb4c659f2488d",
    "attribute_id": "relation%3Acontract_created_by",
    "object": "0x9c33eacc2f50e39940d3afaf2c7b8246b681a374"
  },
  "queryParams": {},
  "type": "http"
}

Output schema

{
  "type": "json",
  "example": {
    "data": {
      "chainId": 1,
      "subject": "0x7a250d5630b4cf539739df2c5dacb4c659f2488d",
      "attributeId": "relation:contract_created_by",
      "object": "0x9c33eacc2f50e39940d3afaf2c7b8246b681a374",
      "result": "pass",
      "definitionVersion": "1.0.0",
      "graphRevision": "4855f85e632b317a25acd1aa04d7b88242f55acf",
      "referenceBlock": 10207858,
      "referenceBlockHash": "0xe190f8921da7de355ef7100afbe705bce871ea3c082610b2632fa094d158f656",
      "snapshotId": "eth-mainnet@10207858",
      "selectedFamilyId": "create_lineage",
      "factResults": [
        {
          "fact_id": "successful_create_lineage",
          "observed": true,
          "operator": "exists",
          "threshold": 1
        }
      ],
      "negativeControlResults": [
        {
          "control_id": "deployer_not_self",
          "evaluation": "must_be_false",
          "observed": false
        }
      ],
      "dependencyProofRefs": [],
      "bindingVersions": {
        "ev:2614ee7c7c48": "ev:d3ca8932be98"
      },
      "sourceEvidenceRefs": [
        {
          "sourceId": "ev:5d078addaca0"
        }
      ],
      "evaluatorVersion": "1.0.0",
      "evaluatedAt": 1787500189,
      "failureReasonCodes": [],
      "proofHash": "sha256:d7ee40dcb4b72022dd990f640d80daa6fff749dd95d71c8e5b529e5f4c440fcb"
    }
  }
}