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What is fry-x402-mcp?

fry-foundation/fry-x402-mcp — explained in plain English

Analysis updated 2026-05-18

0JavaScriptAudience · developerComplexity · 4/5LicenseSetup · moderate

In one sentence

An MCP server that lets AI assistants pay small USDC fees to call blockchain data and transaction-building tools on Algorand.

Mindmap

mindmap
  root((fry-x402-mcp))
    What it does
      Exposes pay per call tools
      Builds unsigned transactions
      Pulls live tool catalog
    Tech stack
      JavaScript
      Node.js
      MCP protocol
      Algorand
    Use cases
      AI agent stakes tokens
      Check DePIN pool data
      Build P2P trade offers
    Audience
      Developers
      Crypto users
      AI agent builders

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Let an AI assistant check live staking and farming pool data on Algorand

USE CASE 2

Have an AI agent build a staking or liquidity pool transaction for the user to sign

USE CASE 3

Set up automated peer-to-peer trade offers through an AI assistant

USE CASE 4

Cap how much an AI agent can spend per blockchain call with a spending ceiling

What is it built with?

JavaScriptNode.jsMCPAlgorand

How does it compare?

fry-foundation/fry-x402-mcp00kaku/gallery-slider-block3rd-eden/ircb.io
Stars0
LanguageJavaScriptJavaScriptJavaScript
Last pushed2021-05-192016-11-16
MaintenanceDormantDormant
Setup difficultymoderateeasyeasy
Complexity4/52/52/5
Audiencedevelopergeneraldeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Requires Node.js, an Algorand wallet mnemonic funded with USDC, and comfort managing crypto keys.

Use freely for any purpose, including commercial use, as long as you keep the copyright notice.

So what is it?

fry-x402-mcp connects AI assistants like Claude Desktop or Claude Code to a set of pay-per-call blockchain services run by fry.farm on the Algorand network. It works through MCP, a protocol that lets AI tools call outside services as if they were built-in functions, so once configured an AI agent can check on-chain data or build transactions just by using these tools in conversation. There are fifteen available actions in total, split between three free or very cheap data lookups, such as staking pool statistics and reward information, and twelve paid actions that build blockchain transactions like staking tokens, joining liquidity pools, minting an NFT, or setting up peer-to-peer trades. Each paid call costs a small fraction of a dollar, paid in a stable digital currency called USDC, and no account or API key is needed since the payment itself acts as the authorization. Importantly, this tool never holds anyone's private keys. When it builds a transaction, it hands back an unsigned version, and the AI agent's own wallet, set up separately by the person running it, signs the transaction locally before it gets submitted. The list of available tools is pulled live from fry.farm's own catalog when the server starts, so new services appear automatically without needing an update to this project. Setup involves cloning the repository, installing dependencies, and configuring an AI assistant to run it, along with providing the agent's own wallet phrase as an environment variable and a maximum spending limit per payment as a safety cap. The project is written in JavaScript, requires Node.js, and is released under the MIT license by the Fry Foundation. It is intended for people comfortable managing a cryptocurrency wallet and understanding the risk of giving an AI agent the ability to sign and submit blockchain transactions on its own.

Copy-paste prompts

Prompt 1
Help me configure fry-x402-mcp in Claude Desktop with my agent wallet
Prompt 2
Explain how the unsigned transaction and signing flow works in fry-x402-mcp
Prompt 3
Walk me through checking the live tool catalog with x402_catalog
Prompt 4
Show me how to safely set MAX_PAYMENT_USDC to limit agent spending
Prompt 5
Explain what the x402 payment protocol does in this MCP server

Frequently asked questions

What is fry-x402-mcp?

An MCP server that lets AI assistants pay small USDC fees to call blockchain data and transaction-building tools on Algorand.

What language is fry-x402-mcp written in?

Mainly JavaScript. The stack also includes JavaScript, Node.js, MCP.

What license does fry-x402-mcp use?

Use freely for any purpose, including commercial use, as long as you keep the copyright notice.

How hard is fry-x402-mcp to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is fry-x402-mcp for?

Mainly developer.

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