Archive Full
by pulse.chainverdict.xyz in Onchain & crypto
The complete daily observation history of third-party x402 endpoints since first observation, with the Merkle root of each day. Each root is chained to the previous day and timestamped into Bitcoin via OpenTimestamps, so the archive can be verified as having existed on the stated dates rather than assembled later. The most recent 7 days are free at /v1/datasets/day/{day}; the manifest and verification method are free at /v1/datasets/manifest.
https://pulse.chainverdict.xyz/v1/archive/full- Price
- $0.5
- per call in USDC
- Uptime
- 100%
- last 30 days
- Response time
- 606 ms
- 783 ms slowest 5%
- Last check
- Passed
- 13 min ago, next in 16 min
Reliability
Status and outage history · Atom feed · Watch with other listings
How to call it
GET https://pulse.chainverdict.xyz/v1/archive/full
Each call costs $0.5 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://pulse.chainverdict.xyz/v1/archive/fullExample response
The provider's example. We can't check it without paying.
{
"anchors": {
"daysWithTimestampProof": 18
},
"days": [],
"daysAvailable": 18,
"observingSince": "2026-08-07"
}Call it from code
The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.5.
curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://pulse.chainverdict.xyz/v1/archive/full'
# 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://pulse.chainverdict.xyz/v1/archive/full' \
| grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decodeJavaScript: 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 $0.5 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.5" });
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 $0.5 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fpulse.chainverdict.xyz%2Fv1%2Farchive%2Ffull
const res = await pay("https://pulse.chainverdict.xyz/v1/archive/full");
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 $0.5 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.5"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))
with x402_requests(client) as session:
res = session.get("https://pulse.chainverdict.xyz/v1/archive/full")
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
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 13 min ago | Passed | 402 | 725 ms | $0.5 |
| 5 h ago | Passed | 402 | 394 ms | $0.5 |
| 10 h ago | Passed | 402 | 315 ms | $0.5 |
| 15 h ago | Passed | 402 | 324 ms | $0.5 |
| 20 h ago | Passed | 402 | 671 ms | $0.5 |
Show 10 older checks
| 25 h ago | Passed | 402 | 275 ms | $0.5 |
| 30 h ago | Passed | 402 | 657 ms | $0.5 |
| 34 h ago | Passed | 402 | 684 ms | $0.5 |
| 38 h ago | Passed | 402 | 620 ms | $0.5 |
| 43 h ago | Passed | 402 | 678 ms | $0.5 |
| 47 h ago | Passed | 402 | 297 ms | $0.5 |
| 2 days ago | Passed | 402 | 301 ms | $0.5 |
| 2 days ago | Passed | 402 | 720 ms | $0.5 |
| 3 days ago | Passed | 402 | 723 ms | $0.5 |
| 3 days ago | Passed | 402 | 611 ms | $0.5 |