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chainlink-feeds-mcp

chainlink-feeds-mcp

Public
kukapay/chainlink-feeds-mcp

Provides real-time access to decentralized on-chain price feeds across multiple blockchain networks via the Model Context Protocol, enabling AI agents and autonomous systems to query latest prices, supported chains, and feed details with configurable multi-chain support.

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May 30, 2025
Updated Jun 4, 2025

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Chainlink Feeds MCP Server

An MCP server that provides real-time access to Chainlink's decentralized on-chain price feeds, optimized for seamless integration into AI agents and autonomous systems

Status

Features

  • Query Latest Price: Fetch the latest price for a specified price feed pair (e.g., FIL/ETH) on a given chain (e.g., ethereum), including price, decimals, round ID, and timestamp.
  • Query Price by Round ID: Retrieve price data for a specific round ID (currently a placeholder due to on-chain historical data limitations).
  • List Supported Chains: Get a comma-separated list of supported blockchain networks (e.g., ethereum,base).
  • List All Feeds: Retrieve a Markdown-formatted list of all chains and their price feed names (e.g., - ethereum: FIL/ETH,FDUSD/USD).
  • List Feeds by Chain: Obtain a comma-separated list of price feed names for a specific chain (e.g., FIL/ETH,FDUSD/USD for ethereum).
  • Configurable Feeds: Define price feeds and RPC endpoints in a feeds.json file, supporting multiple chains and feed categories.

Supported Chains and Feeds

The server supports 9 blockchain networks with a total of 329 price feeds, as defined in feeds.json:

  • Ethereum: 107 feeds (e.g., FIL/ETH, BTC/USD, USDC/USD)
  • BNB Chain (bsc): 80 feeds (e.g., DOT/USD, CAKE/USD, BUSD/BNB)
  • Base: 52 feeds (e.g., AXL/USD, USDC/USD, WIF/USD)
  • Starknet: 9 feeds (e.g., ETH/USD, BTC/USD, WSTETH/ETH)
  • Linea: 15 feeds (e.g., ETH/USD, FOXY/USD, MATIC/USD)
  • Mantle: 6 feeds (e.g., MNT/USD, USDT/USD, BTC/USD)
  • Scroll: 22 feeds (e.g., SCR/USD, STETH/USD, WBTC/BTC)
  • zkSync: 16 feeds (e.g., ZK/USD, PEPE/USD, TRUMP/USD)
  • Celo: 22 feeds (e.g., CELO/USD, CUSD/USD, NGN/USD)

Additional chains and feeds can be added by updating feeds.json with new network configurations and proxy addresses from Chainlink's Price Feeds documentation.

Prerequisites

  • Node.js: Version 18.x or higher.
  • npm: For dependency installation.
  • Infura API Key: Obtain a key from the MetaMask Developer Dashboard with access to supported networks (e.g., Ethereum, Base).
  • MCP Inspector (optional): For testing the server locally.
  • Claude Desktop (optional): For integration with Anthropic's Claude interface.

Installation

  1. Clone the Repository:

    git clone https://github.com/kukapay/chainlink-feeds-mcp.git cd chainlink-feeds-mcp
  2. Install Dependencies:

    npm install

    The project requires:

    • @modelcontextprotocol/sdk: For MCP server functionality.
    • ethers: Version 6.x for blockchain interactions.
    • zod: For input validation.
    • dotenv: For environment variable management.
  3. Configure MCP Client: To use this server with an MCP client like Claude Desktop, add the following to your config file (or equivalent):

    { "mcpServers": { "chainlink-feeds-mcp": { "command": "node", "args": ["path/to/chainlink-feeds-mcp/index.js"], "env": { "INFURA_API_KEY": "your_api_key_here" } } } }

Usage

The server exposes five tools via the MCP protocol, accessible through Claude Desktop (for natural language queries) or MCP Inspector (for JSON inputs). Below are the tools, with examples in both natural language (via Claude Desktop) and JSON formats.

Tool: getLatestPrice

  • Description: Fetches the latest price for a given pair on a specified chain, returns a JSON object like this:

    { "chain": "ethereum", "pair": "FIL/ETH", "price": 0.01234, "decimals": 18, "roundId": "123456", "timestamp": "2025-04-17T12:00:00.000Z", "proxyAddress": "0x0606Be69451B1C9861Ac6b3626b99093b713E801", "feedCategory": "medium" }
  • Parameters:

    • pair (string): The price feed pair, e.g., FIL/ETH.
    • chain (string): The blockchain network, e.g., ethereum.
  • Natural Language Example (Claude Desktop):

    Input: "What¡¯s the latest FIL/ETH price on Ethereum?"

    Output: "The latest FIL/ETH price on Ethereum is 0.01234, with 18 decimals, round ID 123456, updated at 2025-04-17 12:00:00 UTC."

Tool: queryPriceByRound

  • Description: Queries the price for a given pair and round ID on a specified chain, returns a JSON object like this:

    { "chain": "ethereum", "pair": "FDUSD/USD", "price": 1.0001, "decimals": 8, "roundId": "123", "timestamp": "2025-04-17T12:00:00.000Z", "proxyAddress": "0xfAA9147190c2C2cc5B8387B4f49016bDB3380572", "feedCategory": "medium" }
  • Parameters:

    • roundId (string): The round ID for the price data.
    • pair (string): The price feed pair, e.g., FDUSD/USD.
    • chain (string): The blockchain network, e.g., ethereum.
  • Natural Language Example (Claude Desktop):

    Input: "Can you get the FDUSD/USD price for round ID 123 on Ethereum?"

    Output: "For round ID 123, the FDUSD/USD price on Ethereum is 1.0001, with 8 decimals, updated at 2025-04-17 12:00:00 UTC. Note: This is a placeholder response due to historical data limitations."

Tool: listSupportedChains

  • Description: Returns a comma-separated list of all supported blockchain networks.

  • Parameters: None.

  • Natural Language Example (Claude Desktop):

    Input: "Which blockchain networks does this server support?"

    Output: "The server supports the following networks: ethereum, bsc, base, starknet, linea, mantle, scroll, zksync, celo."

Tool: listSupportedFeeds

  • Description: Returns a Markdown list of all supported chains and their price feed names.

  • Parameters: None.

  • Natural Language Example (Claude Desktop):

    Input: "Can you list all the price feeds supported by the server?"

    Output: "Here are the supported price feeds by chain:

    • Ethereum: FIL/ETH, FDUSD/USD, UNI/ETH, ...
    • BNB Chain: DOT/USD, CAKE/USD, BUSD/BNB, ...
    • Base: AXL/USD, USDC/USD, WIF/USD, ...
    • Starknet: ETH/USD, BTC/USD, WSTETH/ETH, ...
    • Linea: ETH/USD, FOXY/USD, MATIC/USD, ...
    • Mantle: MNT/USD, USDT/USD, BTC/USD, ...
    • Scroll: SCR/USD, STETH/USD, WBTC/BTC, ...
    • zkSync: ZK/USD, PEPE/USD, TRUMP/USD, ...
    • Celo: CELO/USD, CUSD/USD, NGN/USD, ..."

Tool: listSupportedFeedsByChain

  • Description: Returns a comma-separated list of price feed names for a specified blockchain network.

  • Parameters:

    • chain (string): The blockchain network, e.g., base.
  • Natural Language Example (Claude Desktop):

    Input: "What price feeds are available on the Base chain?"

    Output: "The Base chain supports the following price feeds: AXL/USD, USDC/USD, WIF/USD, CBETH/ETH, ..."

License

This project is licensed under the MIT License.

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