Rank

Last 30 days

Uptime

100%

Response time

44 ms typical, 44 ms slowest 5%

Last check

36 min ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://x402.agentindex.world/rank" \
  -H "content-type: application/json" \
  -d '{"documents":["A blog post comparing REST API versioning strategies: URL path, header, and query param versioning.","A recipe for chocolate cake with step-by-step baking instructions.","A guide to RESTful resource naming conventions and correct HTTP verb usage."],"query":"best practices for REST API design"}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.agentindex.world%2Frank
const res = await pay("https://x402.agentindex.world/rank", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"documents":["A blog post comparing REST API versioning strategies: URL path, header, and query param versioning.","A recipe for chocolate cake with step-by-step baking instructions.","A guide to RESTful resource naming conventions and correct HTTP verb usage."],"query":"best practices for REST API design"}),
});
console.log(await res.json());

Example input

{
  "documents": [
    "A blog post comparing REST API versioning strategies: URL path, header, and query param versioning.",
    "A recipe for chocolate cake with step-by-step baking instructions.",
    "A guide to RESTful resource naming conventions and correct HTTP verb usage."
  ],
  "query": "best practices for REST API design"
}

Example output

{
  "documents": [
    {
      "document": "A guide to RESTful resource naming conventions and correct HTTP verb usage.",
      "score": 1
    },
    {
      "document": "A blog post comparing REST API versioning strategies: URL path, header, and query param versioning.",
      "score": 0
    },
    {
      "document": "A recipe for chocolate cake with step-by-step baking instructions.",
      "score": 0
    }
  ],
  "x402_receipt": {
    "latency_ms": 405,
    "model_served": "jev",
    "price_paid_usdc": 0,
    "upstream": "rerank"
  }
}

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

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