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Swap Api MCP Server

@Swap-API

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基本情報

カテゴリ

開発者ツール

トランスポート

stdio

作者

Swap-API

投稿者

mino

Swap Api MCP Server について

Free token swaps for AI agents. No API keys. Returns executable transaction calldata for 40+ EVM chains.

#swap#dex#ethereum#defi#tokens#blockchain#evm#erc20

Swap Api MCP Server の設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "swapapi": {
      "command": "npx",
      "args": [
        "@swapapi/mcp"
      ]
    }
  }
}

Swap Api MCP Server のツール

ツール一覧はまだありません

この掲載には表示できるツール一覧がまだありません。サーバーにツールがないという意味ではありません。対応機能はプロジェクトのドキュメントをご確認ください。

上のボタンで一時的なサンドボックスでこのサーバーを実行し、ツール一覧を取得できます。

概要

What is Swap Api?

Swap Api is a Model Context Protocol (MCP) server that provides AI agents with executable token swap calldata for any EVM chain. It is designed for developers building AI‑powered trading or DeFi assistants.

How to use Swap Api?

Install the package globally with npm install -g @swapapi/mcp or run it on the fly with npx @swapapi/mcp. Configure the server in any MCP‑compatible client (e.g., Claude Desktop, Cursor) using the command npx @swapapi/mcp. The server exposes a single tool, swap_tokens, which accepts parameters such as chain ID, token addresses, amount, sender address, and optional slippage.

Key features of Swap Api

  • Single tool: swap_tokens for swap calldata
  • Supports any EVM chain (Ethereum, Base, Arbitrum, etc.)
  • Returns raw transaction data (to, data, value, gas, guaranteedOut)
  • Configurable slippage tolerance (default 0.5%)
  • Includes native token address constant for ETH/MATIC/etc.

Use cases of Swap Api

  • AI agents executing token swaps on Ethereum mainnet
  • Building a trading assistant that swaps ETH to USDC on Base
  • Automating swaps on Arbitrum with custom slippage
  • Generating calldata for DeFi liquidity management

よくある質問

1

How do I get swap transaction data?

Call the `swap_tokens` tool with required parameters (chainId, tokenIn, tokenOut, amountIn, sender). It returns the calldata and other transaction details.

2

Which EVM chains are supported?

The README explicitly lists chain ID 1 (Ethereum), 8453 (Base), and 42161 (Arbitrum), and states “etc.” implying additional EVM chains.

3

What pre‑flight steps should I take before submitting a swap?

Check ERC‑20 approval for non‑native tokens, verify sender balance, estimate gas with a 20% buffer, simulate the transaction with `eth_call`, and submit within 30 seconds of fetching the quote.

4

Does the server require any authentication or API key?

No, the README does not mention any authentication or API key requirement for the MCP server.

5

What is the native token address?

Use `0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE` as the token address for native tokens (ETH, MATIC, etc.).

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