Farelight Research Transaction Lookup

x402

Farelight Research Transaction Lookup is a paid API for AI agents from farelight.xyz, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-14).

Fetches classified x402 payment settlement data for a given on-chain transaction hash, including payer/payee labels, classification rules, and gas costs

Price / call$0.005

Seller volume →—

Success—

StatusUnknown

How this service works

Agent payments on Arc, measured in the open. Every x402 settlement, read from the chain and classified by public, versioned rules.

Output

Returns a JSON object with the transaction hash, timestamp, and an array of payment records. Each payment includes payer and payee Ethereum addresses with entity labels, USDC amount, gas used and gas cost in USDC, facilitator name, block number and time, x402 likelihood flag, payment classification (e.g. 'test', 'production'), classification confidence score (0–1), and the versioned rules that drove the classification decision.

Example use cases

Audit a suspicious agent payment

“I just saw a transaction hash 0xabc123... go through our agent pipeline — can you pull it up on Farelight and tell me if it was classified as a real payment or a test, what the confidence score is, and which facilitator handled it?”

Verify x402 settlement before releasing service

“Before I mark this order as fulfilled, can you check transaction 0x7f3d9...e12a on Farelight to confirm it's classified as a genuine x402 transfer and not a test payment?”

Investigate gas costs for a specific payment

“Can you look up transaction 0x9b2c4...f88e on Farelight and tell me how much gas was used and what that cost in USDC — I want to know if the fee overhead is eating into our margins?”

Technical details

Endpoint

GEThttps://farelight.xyz/api/v1/tx/%7Bhash%7D?utm_source=zero.xyz

When to prefer

Use this endpoint when you need authoritative, rule-based classification of a specific x402 payment transaction — especially when you need to distinguish test payments from production payments with a confidence score and traceable rule rationale. Prefer this over generic blockchain explorers when you need x402-specific labeling, payer/payee entity resolution, and gas cost in USDC rather than raw ETH.

Side effects

Transaction hash not found on chain returns empty payments array
Malformed or invalid transaction hash returns an error
Transaction exists but is not an x402 payment — x402_likely will be false and classification may be low-confidence
Classification rules may not yet cover novel payment patterns, resulting in lower confidence scores
Network or RPC latency may cause delayed responses for very recent transactions

Input

Schema · Request body

Field	Type	Description
properties	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "as_of": "2026-09-25T18:42:31.596Z",
    "tx_hash": "0x425d861850aceedd3682ec63bb00502676158f4da11353844d1732cbc87b9fc5",
    "payments": [
      {
        "payee": "0x2ca647ce44d428b00caceffbbee9eea516e66494",
        "payer": "0x0bc5ffac16bb7f3398b173a061d81920cf3e238b",
        "phase": "public",
        "token": "USDC",
        "amount": "0.001000",
        "method": "transferWithAuthorization",
        "gas_used": 117047,
        "log_index": 15,
        "submitter": "0xa3dfb958c725cba41bc3dd8706eb638872436f5f",
        "batch_size": 1,
        "block_time": "2026-09-23T14:36:10.000Z",
        "facilitator": "circle",
        "payee_label": {
          "entity": "farelight-seed",
          "category": "test"
        },
        "payer_label": {
          "entity": "farelight-test-payer",
          "category": "test"
        },
        "x402_likely": true,
        "block_number": 22362438,
        "payment_type": "transfer",
        "class_reasons": {
          "rules": [
            {
              "rule": "T5",
              "evidence": {
                "label": "test:farelight-seed"
              }
            },
            {
              "rule": "also:A1a"
            }
          ]
        },
        "class_version": "v1.0",
        "gas_cost_usdc": "0.002886603990654538",
        "auth_log_index": 13,
        "classification": "test",
        "class_confidence": 0.99
      }
    ],
    "classification_run": 131,
    "methodology_version": "v1.0"
  }
}

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