Defi MCP

Name: Defi MCP
Author: matiosera3-ops

by matiosera3-opsversion 0.1.6i★ –iRuns on your computer

Registry nameio.github.matiosera3-ops/defi-mcp

Install

Overview

Description from the maker (original English)

AI agent access to on-chain DeFi data on Polygon & Arbitrum: balances, positions, prices.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 50/wk · ★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Crypto & blockchain
You need to fill in: POLYGON_RPC_URL, ARBITRUM_RPC_URL

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: POLYGON_RPC_URL, ARBITRUM_RPC_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "defi": {
      "command": "uvx",
      "args": [
        "defi-mcp"
      ],
      "env": {
        "POLYGON_RPC_URL": "your-value",
        "ARBITRUM_RPC_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add defi --env POLYGON_RPC_URL=your-value --env ARBITRUM_RPC_URL=your-value -- uvx defi-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "defi": {
      "command": "uvx",
      "args": [
        "defi-mcp"
      ],
      "env": {
        "POLYGON_RPC_URL": "your-value",
        "ARBITRUM_RPC_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "defi": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "defi-mcp"
      ],
      "env": {
        "POLYGON_RPC_URL": "your-value",
        "ARBITRUM_RPC_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

POLYGON_RPC_URL secret required env
RPC URL for Polygon (e.g. from Alchemy or Infura)
ARBITRUM_RPC_URL secret env
RPC URL for Arbitrum One (e.g. from Alchemy or Infura)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account matiosera3-ops, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Crypto & blockchaini

More stars than 0% of the other 1614 servers in this category
Published to the registry more recently than 24% of the other 1614 servers in this category
Basic checks equal to or better than 100% of the other 1614 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Defi MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: POLYGON_RPC_URL, ARBITRUM_RPC_URL

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.6) reached the registry 5 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Iran Crypto Exchanges, Highwire, Crypto Sentiment X402

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

defi-mcp

An MCP (Model Context Protocol) server that gives AI agents direct, on-chain access to DeFi data on EVM chains — wallet balances, Aave v3 lending positions, and live token prices, with no centralized API in the middle.

Status: Live and functional. 5 tools available today, more on the roadmap.

Why

Most "DeFi + AI" integrations route through a centralized API that can rate-limit, paywall, or simply disappear. defi-mcp talks directly to the chain (via your own RPC provider) and to first-party oracles (Chainlink), so the data your AI agent gets is exactly what's on-chain — verifiable, and not dependent on a third-party API staying online.

Tools

`get_token_balance`

Reads the ERC-20 balance of any wallet address for a supported token.

Supported tokens:

Polygon: USDC, USDC.e, USDT, WETH, WMATIC, WBTC, DAI, AAVE
Arbitrum: USDC, USDC.e (bridged), USDT, WETH, WBTC, ARB

// get_token_balance(address="0x...", token_symbol="USDC", chain="polygon")

{ "address": "0x...", "token": "USDC", "chain": "polygon", "balance": 268.21, "raw_balance": "268210000", "decimals": 6 }

`get_aave_position`

Reads a user's full Aave v3 lending/borrowing position: collateral, debt, available borrowing power, and health factor — straight from the Aave v3 Pool contract.

// get_aave_position(address="0x...", chain="polygon")

{ "address": "0x...", "chain": "polygon", "total_collateral_usd": 969.78, "total_debt_usd": 288.16, "available_borrows_usd": 484.86, "liquidation_threshold_pct": 82.79, "ltv_pct": 79.71, "health_factor": 2.79, "has_active_position": true }

A health_factor below 1.0 means the position is at risk of liquidation. A null health factor means the user has no outstanding debt.

`get_token_price`

Reads the current USD price of a token directly from a Chainlink price feed — the same oracle DeFi protocols use internally, so the price is consistent with what get_aave_position reports.

Supported feeds:

Polygon: ETH/WETH, MATIC/WMATIC, WBTC, USDC, USDT
Arbitrum: ETH/WETH, WBTC, ARB, USDC, USDT

// get_token_price(token_symbol="WBTC", chain="polygon")

{ "token": "WBTC", "chain": "polygon", "price_usd": 63835.77, "decimals": 8, "updated_at": 1782032816 }

`simulate_swap`

Simulates a Uniswap v3 swap on-chain via the QuoterV2 contract — no transaction submitted, no wallet needed. Tries all four fee tiers (0.01%, 0.05%, 0.3%, 1%) and returns the best available output amount.

Supported tokens:

Polygon: USDC, USDC.e, USDT, WETH, WMATIC, WBTC, DAI, AAVE
Arbitrum: USDC, USDC.e (bridged), USDT, WETH, WBTC, ARB

// simulate_swap(token_in="WMATIC", token_out="USDC", amount_in=100.0, chain="polygon")

{ "chain": "polygon", "token_in": "WMATIC", "token_out": "USDC", "amount_in": 100.0, "amount_out": 7.990547, "fee_tier_used_pct": 0.05, "fee_tier_used_bps": 500, "gas_estimate": 122770 }

If no pool exists for the pair at any fee tier, returns {"error": "No liquidity found for this pair on any fee tier"}.

`hello`

Simple connectivity check — confirms the MCP server is reachable and responding.

Supported chains

Chain	`get_token_balance`	`get_aave_position`	`get_token_price`	`simulate_swap`
Polygon	✅	✅	✅	✅
Arbitrum	✅	✅	✅	✅

Installation

Requires Python 3.10+ and an RPC provider API key (e.g. Alchemy, free tier works).

pip install defi-mcp

Create a .env file in your working directory (see .env.example):

POLYGON_RPC_URL=https://polygon-mainnet.g.alchemy.com/v2/YOUR_API_KEY

ARBITRUM_RPC_URL=https://arb-mainnet.g.alchemy.com/v2/YOUR_API_KEY

Each chain only needs its RPC URL configured. Tools called with chain="arbitrum" will fail gracefully if ARBITRUM_RPC_URL is not set.

Usage with Claude Desktop

Add this to your Claude Desktop MCP config (claude_desktop_config.json):

"mcpServers": { "defi-mcp": { "command": "uvx", "args": ["defi-mcp"], "env": { "POLYGON_RPC_URL": "https://polygon-mainnet.g.alchemy.com/v2/YOUR_API_KEY", "ARBITRUM_RPC_URL": "https://arb-mainnet.g.alchemy.com/v2/YOUR_API_KEY" } } } }

Restart Claude Desktop, and the tools above will be available to the model.

Testing locally

You can test the server directly with the official MCP Inspector:

npx @modelcontextprotocol/inspector uvx defi-mcp

Roadmap

Track Uniswap v3 LP positions and impermanent loss
Monitor protocol TVLs
Additional chains (Ethereum, Base)
defi-mcp-cloud — hosted tier with MEV-specific tools, caching, and higher rate limits

Architecture

Open-core model: this repository (MIT licensed) covers standard on-chain read tools. A separate defi-mcp-cloud will offer a hosted version with MEV-related tools, request caching, and managed RPC access for users who don't want to run their own infrastructure.

Resources

defi-storage-cheatsheet — verified EVM storage slot layouts for Aave v3 and Uniswap v3, with web3.py snippets. Useful if you want to read on-chain state directly via eth_getStorageAt instead of calling view functions — the lower-level approach behind some of what this server does under the hood.

Contributing

Issues and PRs welcome. This is an early-stage project — feedback on what tools would actually be useful to you is especially valuable.

License

MIT

Defi MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Crypto & blockchaini

Common questions

Alternatives

Iran Crypto Exchanges

Highwire

Crypto Sentiment X402

README from the maker

defi-mcp

Why

Tools

get_token_balance

get_aave_position

get_token_price

simulate_swap

hello

Supported chains

Installation

Usage with Claude Desktop

Testing locally

Roadmap

Architecture

Resources

Contributing

License

`get_token_balance`

`get_aave_position`

`get_token_price`

`simulate_swap`

`hello`