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Api Endpoint

TraceFast

TraceFast knowledge graph: the evidence behind one proven attribute of an address — the facts that were checked with their expected and observed values, the conditions that had to be false, the sources the evidence was read from, and the block the evaluation was pinned to. Path address: The address, `0x`-prefixed, 40 hex characters, any case; attribute_id: The attribute id, `family:name`, as listed by the attributes method. Docs: https://docs.tracefast.xyz/api/address-attribute-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/attributes/:attribute_id/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
117 ms
Average latency
279 ms
HTTP status
402
Last checked
Reachability
100% 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": "0x4838b106fce9647bdf1e7877bf73ce8b0bad5f97",
    "attribute_id": "address_nature%3Aeoa_currently"
  },
  "queryParams": {},
  "type": "http"
}

Output schema

{
  "type": "json",
  "example": {
    "data": {
      "chainId": 1,
      "subject": "0x4838b106fce9647bdf1e7877bf73ce8b0bad5f97",
      "attributeId": "address_nature:eoa_currently",
      "result": "pass",
      "definitionVersion": "1.0.0",
      "graphRevision": "4855f85e632b317a25acd1aa04d7b88242f55acf",
      "referenceBlock": 16976894,
      "referenceBlockHash": "0x7639d2adc72d2333b23d4c19f937559c3dad98f6eb685f391e5f273f21eb6179",
      "snapshotId": "eth-mainnet@16976894",
      "selectedFamilyId": "account_without_runtime_code_eoa",
      "factResults": [
        {
          "fact_id": "account_evidence_state_or_signature",
          "observed": true,
          "operator": "exists",
          "threshold": 1
        }
      ],
      "negativeControlResults": [
        {
          "control_id": "not_ever_runtime_code",
          "evaluation": "must_be_false",
          "observed": false
        }
      ],
      "dependencyProofRefs": [],
      "bindingVersions": {
        "ev:1edb2dd7bd16": "ev:6a434a2cbb0d",
        "ev:68f90586498a": "ev:6b3b228a29e5",
        "ev:76fc5d34b166": "ev:d85381802df0",
        "ev:788c3564f26d": "ev:9be1a0687a15",
        "ev:8af928889291": "ev:c638c54f6366",
        "ev:e4706e0777b1": "ev:13ffd8c3998f"
      },
      "sourceEvidenceRefs": [
        {
          "sourceId": "ev:7955b9d78504"
        }
      ],
      "evaluatorVersion": "1.0.0",
      "evaluatedAt": 1790780370,
      "failureReasonCodes": [],
      "proofHash": "sha256:eb9411b5f415aaf095d5c68831b6176b110d60fb6dd47afa2581c4d96cf368b5"
    }
  }
}