ToolVet
75trust / 100

Provenance Chain

by TrustAgent in Onchain & crypto

x402 APIPassing, checked 3 h ago

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 unremarkable each looks alone — the cheapest strong signal that an identity was manufactured. Works on any address, not only registered agents. Free alternative: GET /v1/provenance. Trial: 3 free calls/wallet/24h — https://trust-agent.io/v1/trial.

GET
https://trust-agent.io/v1/provenance/chain
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
501 ms
584 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://trust-agent.io/v1/provenance/chain

Each call costs $0.010002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://trust-agent.io/v1/provenance/chain?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=base

Parameters

ParameterTypeRequiredDescription
addressstringYesREQUIRED. EVM address whose funding to trace.
chainstringNoOPTIONAL. Only "base" is served. Defaults to base.

Example response

The provider's example. We can't check it without paying.

{
  "chain": "the funding chain walked upward, nearest first",
  "cluster": "fund:<funder>; addresses sharing it were paid for from the same account",
  "funder": "the address that first sent this one native tokens; null when unresolvable",
  "measurable": "false means the provider could not be examined at all (outage, rate limit) — nothing in the response is a statement about the address",
  "origin": "furthest resolved ancestor — where the money came from",
  "resolved": "false means no funder exists for this address"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.010002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://trust-agent.io/v1/provenance/chain?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=base'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://trust-agent.io/v1/provenance/chain?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=base' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.010002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.010002" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.010002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftrust-agent.io%2Fv1%2Fprovenance%2Fchain
const res = await pay("https://trust-agent.io/v1/provenance/chain?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=base");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.010002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.010002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://trust-agent.io/v1/provenance/chain?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=base")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402507 ms$0.01
8 h agoPassed402485 ms$0.01
14 h agoPassed402251 ms$0.01
19 h agoPassed402533 ms$0.01
23 h agoPassed402501 ms$0.01
Show 10 older checks
28 h agoPassed402267 ms$0.01
33 h agoPassed402516 ms$0.01
38 h agoPassed402516 ms$0.01
42 h agoPassed402254 ms$0.01
47 h agoPassed402497 ms$0.01
2 days agoPassed402306 ms$0.01
2 days agoPassed402522 ms$0.01
2 days agoPassed402529 ms$0.01
3 days agoPassed402499 ms$0.01
3 days agoPassed402523 ms$0.01