ToolVet
77trust / 100

Search

by Bob Research Tools in Search & web

x402 APIPassing, checked 4 h ago

Plain web search. Returns ranked results (title, URL and a short snippet) for a query, up to 10, optionally limited to a publish-date range with since and until (YYYY-MM-DD). No AI-written answer, so it is fast: typically under a second. If it cannot return results you get an error and are not charged.

GET
https://bob.assimilatethis.com/search
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
561 ms
645 ms slowest 5%
Last check
Passed
4 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://bob.assimilatethis.com/search

Each call costs $0.003 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://bob.assimilatethis.com/search?n=5&q=x402+payment+protocol+for+AI+agents&since=2026-09-01

Parameters

ParameterTypeRequiredDescription
nintegerNoHow many results to return, 1 to 10 (default 5)
qstringYesThe search query
sincestringNoOptional: only results published on or after this date, YYYY-MM-DD
untilstringNoOptional: only results published on or before this date, YYYY-MM-DD

Example response

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

{
  "query": "x402 payment protocol for AI agents",
  "results": [
    {
      "snippet": "A short passage from the page.",
      "title": "Page title",
      "url": "https://example.com/page"
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://bob.assimilatethis.com/search?n=5&q=x402+payment+protocol+for+AI+agents&since=2026-09-01'

# 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://bob.assimilatethis.com/search?n=5&q=x402+payment+protocol+for+AI+agents&since=2026-09-01' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbob.assimilatethis.com%2Fsearch
const res = await pay("https://bob.assimilatethis.com/search?n=5&q=x402+payment+protocol+for+AI+agents&since=2026-09-01");
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://bob.assimilatethis.com/search?n=5&q=x402+payment+protocol+for+AI+agents&since=2026-09-01")
    print(res.status_code, res.text)

Security scan

1 finding

  • Payment address changed recently in payment
    Payment address changed from 0x87116386E7aa7BCc13c6F6aBFC44E351f842d55F to 0x87D2c7808872985cFcE3847eE172Ebb87d772Dbe

Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402583 ms$0.003
9 h agoPassed402618 ms$0.003
14 h agoPassed402579 ms$0.003
20 h agoPassed402552 ms$0.003
25 h agoPassed402604 ms$0.003
Show 10 older checks
30 h agoPassed402553 ms$0.003
35 h agoPassed402527 ms$0.003
39 h agoPassed402627 ms$0.003
44 h agoPassed402564 ms$0.003
2 days agoPassed402540 ms$0.003
2 days agoPassed402561 ms$0.003
2 days agoPassed402566 ms$0.003
3 days agoPassed402549 ms$0.003
3 days agoPassed402722 ms$0.003
3 days agoPassed402591 ms$0.003

History

11 Oct 2026Payment address changed from 0x87116386E7aa7BCc13c6F6aBFC44E351f842d55F to 0x87D2c7808872985cFcE3847eE172Ebb87d772Dbe