Content
# 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
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[](https://opensource.org/licenses/MIT)
[](https://nodejs.org/)
## 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](https://infura.io/) 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**:
```bash
git clone https://github.com/kukapay/chainlink-feeds-mcp.git
cd chainlink-feeds-mcp
```
2. **Install Dependencies**:
```bash
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):
```json
{
"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:
```json
{
"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:
```json
{
"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](LICENSE).
