Skill Cheapest Rail

Last 30 days

Uptime

100%

Response time

190 ms typical, 190 ms slowest 5%

Last check

1 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://agent402.tools/api/skill/cheapest-rail" \
  -H "content-type: application/json" \
  -d '{"networks":"ethereum,base,arbitrum,optimism,polygon"}'

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%2Fagent402.tools%2Fapi%2Fskill%2Fcheapest-rail
const res = await pay("https://agent402.tools/api/skill/cheapest-rail", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"networks":"ethereum,base,arbitrum,optimism,polygon"}),
});
console.log(await res.json());

Example input

{
  "networks": "ethereum,base,arbitrum,optimism,polygon"
}

Example output

{
  "args": {
    "networks": "ethereum,base,arbitrum,optimism,polygon"
  },
  "pack": "cheapest-rail",
  "steps": [
    {
      "ok": true,
      "result": {},
      "slug": "l2-gas-comparison"
    },
    {
      "ok": true,
      "result": {},
      "slug": "gas-snapshot"
    },
    {
      "ok": true,
      "result": {},
      "slug": "gas-estimate"
    },
    {
      "ok": true,
      "result": {},
      "slug": "crypto-price"
    }
  ],
  "summary": "4/4 steps succeeded"
}

Security scan

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

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