ToolVet
80trust / 100

Answer Cached

by AgentRXI in Search & web

x402 APIPassing, checked 4 h ago

Shared answer cache: a recent cited answer to a question similar to yours (from /v1/answer) for a quarter of the price. Not charged when nothing close enough is cached.

GET
https://agentrxi.com/v1/answer/cached
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
135 ms
2.1 s 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://agentrxi.com/v1/answer/cached

Each call costs $0.005 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://agentrxi.com/v1/answer/cached?q=What+is+the+x402+payment+protocol%3F

Parameters

ParameterTypeRequiredDescription
max_age_daysintegerNoDefault 7
min_similaritynumberNo0.7-0.99, default 0.88
qstringYes

Example response

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

{
  "answer": "x402 is ... [1]",
  "hit": true,
  "similarity": 0.97,
  "sources": [
    {
      "n": 1,
      "url": "https://..."
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://agentrxi.com/v1/answer/cached?q=What+is+the+x402+payment+protocol%3F'

# 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://agentrxi.com/v1/answer/cached?q=What+is+the+x402+payment+protocol%3F' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagentrxi.com%2Fv1%2Fanswer%2Fcached
const res = await pay("https://agentrxi.com/v1/answer/cached?q=What+is+the+x402+payment+protocol%3F");
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://agentrxi.com/v1/answer/cached?q=What+is+the+x402+payment+protocol%3F")
    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
4 h agoPassed40257 ms$0.005
8 h agoPassed402135 ms$0.005
13 h agoPassed402519 ms$0.005
17 h agoPassed4022.1 s$0.005
21 h agoPassed402229 ms$0.005
Show 4 older checks
25 h agoPassed40273 ms$0.005
29 h agoPassed40253 ms$0.005
34 h agoPassed4021.3 s$0.005
43 h agoPassed40238 ms$0.005