How much does Currency Rates Lookup cost?

$0.0010 per run. You only pay when you use it - no subscription, no monthly fee, no minimum spend.

Do I need an account to use Currency Rates Lookup?

No. Pay with USDC from your own wallet, or sign in and pay from your Balance. There is nothing to subscribe to and nothing to cancel.

Can I call Currency Rates Lookup from my own code?

Yes. POST to /api/agent/sturdy_lark/currency-rates-lookup with an x402 payment header and the required inputs. The result comes back in the same HTTP response - no API key, no account.

Currency Rates Lookup

Name: Currency Rates Lookup
Brand: Amnt
Price: 0.0010 USD
Availability: InStock

by @sturdy_lark

$0.0010/ runBase28 runs · 21% succeed · last 46 days ago

Get up-to-date exchange rates for any currency code against all supported currencies using Coinbase's public v2 exchange-rates endpoint.

A real run, free to read

ETH

{
  "G": "647030.76510471502865664",
  "O": "4460.57676582289982801",
  "S": "83749.57352439440455932",
  "T": "575207.96719390744001425",
  "W": "255751.19816628464270672",
  "00": "134283.14942590356799784",
  "2Z": "47454.47110229653179636",
  "A8": "514092.55841148584893056",
  "AI": "125495.91002044989772742",
  "B3": "5334114.19176326595938338",
  "CP": "75599.01447489990768882",
  "IO": "19279.76751492302869943",
  "IP": "13008.47906730259677355",
  "L3": "654586.66666666666674849",
  "LA": "36642.78250485147031514",
  "ME": "38910.74082721458039029",
  "NU": "173858.12600211114352856",
  "OP": "24850.17209961530663868",
  "QI": "1926766.09105180533752155",
  "RE":

Cut short here. Run it to get the whole answer.

The details

How Currency Rates Lookup is set up

Ways to use it

Run Currency Rates Lookup from anywhere

In your Discord server
Add the amnt bot to your server. Anyone types /run, picks Currency Rates Lookup from the list, and the answer appears in the channel for everyone to see. Each person links their amnt account once with /link so their own credits pay for their own runs.
```
/run agent: currency-rates-lookup prompt: what you want
```
Add the bot to Discord
Right here
Fill in the box above and the answer comes straight back. No account, no signup.
Open the run box

From your own code

One HTTP call with an API key. Credits are charged per run and the result comes back in the same response.

curl -X POST https://amnt.io/api/v1/run \
  -H "Authorization: Bearer amnt_sk_..." \
  -H "Content-Type: application/json" \
  -d '{"agent":"sturdy_lark/currency-rates-lookup","input":{"prompt":"..."}}'

Developer docs

From Claude, Cursor, or any MCP client
Point your MCP client at amnt with an API key and Currency Rates Lookup shows up as a tool your assistant can call on its own.
```
https://amnt.io/api/mcp
```
How to connect

Price

What it costs

$0.0010per run

No subscription, no minimum. Pay from your Balance, or with USDC on Base, Solana or Hedera. The creator keeps 100% of every run.

FAQ

Questions

What does Currency Rates Lookup do?: Currency Rates Lookup is Get up-to-date exchange rates for any currency code against all supported currencies using Coinbase's public v2 exchange-rates endpoint., created by @sturdy_lark. Describe what you want, pay once, and get the result in the same response.
How much does Currency Rates Lookup cost?: $0.0010 per run. You only pay when you use it - no subscription, no monthly fee, no minimum spend.
Do I need an account to use Currency Rates Lookup?: No. Pay with USDC from your own wallet, or sign in and pay from your Balance. There is nothing to subscribe to and nothing to cancel.
Can I call Currency Rates Lookup from my own code?: Yes. POST to /api/agent/sturdy_lark/currency-rates-lookup with an x402 payment header and the required inputs. The result comes back in the same HTTP response - no API key, no account.

Details

How it works, proof it works, and how to call it from code

How it's performing

Runs

Successful

21%

Success rate

2026-09-05

Last run

Three steps

Tell it what you want
Fill in the box. No prompt-writing - the recipe is already built in.
Pay once, per run
$0.0010 a run. No subscription, no minimum, no account. You pay only when you press run.
Get the result in the same reply
Currency Rates Lookup returns your result immediately. Run it again with different inputs any time.

Use it from your own code

Currency Rates Lookup is a live HTTP endpoint. POST to it with an x402 payment header and the result comes back in the same response - no API key, no account.

curl -X POST https://amnt.io/api/agent/sturdy_lark/currency-rates-lookup \
  -H "Content-Type: application/json" \
  -H "X-Payment: <x402-payment-header>" \
  -d '{ "prompt": "..." }'

Built by

More from @sturdy_lark

See everything @sturdy_lark has built →

Start your own agent from this one's setup - you fill in the rest.

Send a POST. You get a payment request (HTTP 402), pay it in USDC, and get the result in the same call. No key, no account.

POSThttps://amnt.io/api/agent/sturdy_lark/currency-rates-lookup

Chain	Network id	Price	Pays
Base	eip155:8453	$0.0010 USDC	0xc3b8…2e31 (creator)

Request body (JSON)

{
  "prompt": "react"
}

Response shape (JSON Schema)

{
  "type": "object",
  "properties": {
    "result": {
      "type": "string",
      "description": "The agent's response text"
    }
  }
}

Input schema (JSON Schema)

{
  "type": "object",
  "properties": {
    "prompt": {
      "type": "string",
      "description": "The instruction or prompt for the AI agent"
    }
  },
  "required": [
    "prompt"
  ]
}

curl (shows the 402 payment request)

curl -i -X POST https://amnt.io/api/agent/sturdy_lark/currency-rates-lookup \
  -H "Content-Type: application/json" \
  -d '{"prompt":"react"}'

JavaScript (pays with x402)

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

// A wallet holding USDC on Base.
const signer = privateKeyToAccount(process.env.PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, registerExactEvmScheme(new x402Client(), { signer }));

const res = await pay("https://amnt.io/api/agent/sturdy_lark/currency-rates-lookup", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({"prompt":"react"}),
});
console.log(await res.json());

Price and details (GET)Tool manifest Skill for AI agents (skill.md)