TrustAgent

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x6121654D3Fd4C8B42a90d30472E4D40927C3e6BB",
      "trial": {
        "note": "3 free calls of THIS endpoint per wallet per 24h — not a lesser one. Sign `message` below with any wallet, substituting your own address on the wallet line (either casing), and send the two headers in `send`. No funds, no signup, no settlement — a signature proves the wallet is yours and costs nothing. Contract wallets are verified via ERC-1271. Prefer one signature total: POST the same wallet and signature to /v1/trial/claim and send the returned token as `X-Trial-Token` instead.",
        "send": {
          "X-Trial-Wallet": "the wallet that signed, 0x-prefixed",
          "X-Trial-Signature": "the 0x-prefixed signature over `message`"
        },
        "claim": {
          "use": "X-Trial-Token: the token it returns",
          "body": {
            "wallet": "the wallet that signed, 0x-prefixed",
            "signature": "the 0x-prefixed signature over `message`"
          },
          "endpoint": "POST /v1/trial/claim"
        },
        "howTo": "https://trust-agent.io/v1/trial",
        "price": "$0.00",
        "message": "TrustAgent Free Trial v1\nwallet: 0xYourWalletAddress\ngrant: free-tier access to paid TrustAgent endpoints",
        "signWith": "personal_sign (EIP-191)",
        "windowHours": 24,
        "callsPerWallet": 3
      },
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://trust-agent.io/v1/provenance/chain",
      "description": "Where did this address get its money? Walks the funding chain upward and returns the account that ultimately paid for the wallet, plus a cluster id. Two addresses funded from the same account are not independent parties, however new and unremarkable each looks alone — the strongest cheap signal there is that an identity was manufactured. Works on any address, not only registered agents.",
      "inputSchema": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "chain": "OPTIONAL. Only \"base\" is served. Defaults to base.",
          "address": "REQUIRED. EVM address whose funding to trace."
        }
      },
      "discoverable": true,
      "outputSchema": {
        "chain": "the funding chain walked upward, nearest first",
        "funder": "the address that first sent this one native tokens; null when unresolvable",
        "origin": "furthest resolved ancestor — where the money came from",
        "cluster": "fund:<funder>; addresses sharing it were paid for from the same account",
        "resolved": "false means no funder exists for this address",
        "measurable": "false means the provider could not be examined at all (outage, rate limit) — nothing in the response is a statement about the address"
      },
      "freeAlternative": {
        "url": "https://trust-agent.io/v1/provenance?address=0x...",
        "note": "No payment required. Enough to tell a normally-funded wallet from a chain of fresh ones; this paid route adds the funder and origin addresses and the cluster id.",
        "price": "$0.00",
        "returns": "whether the funding is traceable, how many hops deep, and what shape it is",
        "endpoint": "GET /v1/provenance"
      },
      "maxAmountRequired": "10002",
      "maxTimeoutSeconds": 60
    }
  ],
  "x402Version": 1
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6121654D3Fd4C8B42a90d30472E4D40927C3e6BB",
    "amount": "10002",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "chain": "base",
          "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "chain": "the funding chain walked upward, nearest first",
          "funder": "the address that first sent this one native tokens; null when unresolvable",
          "origin": "furthest resolved ancestor — where the money came from",
          "cluster": "fund:<funder>; addresses sharing it were paid for from the same account",
          "resolved": "false means no funder exists for this address",
          "measurable": "false means the provider could not be examined at all (outage, rate limit) — nothing in the response is a statement about the address"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "address"
              ],
              "properties": {
                "chain": {
                  "type": "string",
                  "description": "OPTIONAL. Only \"base\" is served. Defaults to base."
                },
                "address": {
                  "type": "string",
                  "description": "REQUIRED. EVM address whose funding to trace."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "chain": {
                  "description": "the funding chain walked upward, nearest first"
                },
                "funder": {
                  "description": "the address that first sent this one native tokens; null when unresolvable"
                },
                "origin": {
                  "description": "furthest resolved ancestor — where the money came from"
                },
                "cluster": {
                  "description": "fund:<funder>; addresses sharing it were paid for from the same account"
                },
                "resolved": {
                  "description": "false means no funder exists for this address"
                },
                "measurable": {
                  "description": "false means the provider could not be examined at all (outage, rate limit) — nothing in the response is a statement about the address"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-09-13 17:19Z

Last indexed by Roundhouse

2026-09-24 09:30Z

Last enriched (probe, favicon, geo)

2026-09-23 18:15Z

x402 version

2

Max timeout

60s

Liveness probe

HTTP 402