How do I install Clawswap?

Clawswap is a local plugin. Install it using npm package: @clawswap/mcp-server and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

What credentials does Clawswap need?

Clawswap requires the following credentials or environment variables: SOLANA_PRIVATE_KEY, BASE_PRIVATE_KEY, SOLANA_RPC_URL, BASE_RPC_URL. You can find setup instructions on the server detail page.

What AI apps work with Clawswap?

Clawswap uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Clawswap MCP Server

by John Warmann

Cloud & DevOpsModerate6.0Local

Free

Cross-chain swaps between Solana and Base for AI agents paid for via via x402 micropayments.

About

Cross-chain swaps between Solana and Base for AI agents paid for via via x402 micropayments.

Security Report

6.0

Moderate6.0Moderate Risk

Valid MCP server (2 strong, 4 medium validity signals). 4 known CVEs in dependencies (0 critical, 4 high severity) Package registry verified. Imported from the Official MCP Registry.

12 files analyzed · 5 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

env_vars

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

What You'll Need

Set these up before or after installing:

Base58-encoded Solana private key (required for Solana → Base bridges)Required

Environment variable: SOLANA_PRIVATE_KEY

0x-prefixed hex Base/EVM private key (required for Base → Solana bridges)Required

Environment variable: BASE_PRIVATE_KEY

Solana RPC endpoint URLOptional

Environment variable: SOLANA_RPC_URL

Base RPC endpoint URLOptional

Environment variable: BASE_RPC_URL

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-wartech9-clawswap": {
      "env": {
        "BASE_RPC_URL": "your-base-rpc-url-here",
        "SOLANA_RPC_URL": "your-solana-rpc-url-here",
        "BASE_PRIVATE_KEY": "your-base-private-key-here",
        "SOLANA_PRIVATE_KEY": "your-solana-private-key-here"
      },
      "args": [
        "-y",
        "@clawswap/mcp-server"
      ],
      "command": "npx"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

@clawswap/mcp-server

Send, swap, and bridge tokens cross-chain between Solana and Base — gasless, in one tool call. Built for AI agents using the Model Context Protocol (MCP).

What can it do?

Ask your AI agent any of these:

"Send 10 USDC from Solana to Base"
"How much would it cost to bridge 100 USDC to Base?"
"Transfer my SOL to Base as ETH"
"Swap 50 USDT from Base to Solana"
"Move my stablecoins cross-chain"

The server handles the entire flow: quote → payment → signing → submission → settlement.

Installation

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "clawswap": {
      "command": "npx",
      "args": ["-y", "@clawswap/mcp-server"],
      "env": {
        "SOLANA_PRIVATE_KEY": "your-base58-solana-private-key",
        "BASE_PRIVATE_KEY": "0x-your-hex-base-private-key"
      }
    }
  }
}

Claude Code

claude mcp add clawswap -- npx -y @clawswap/mcp-server

Then set environment variables:

export SOLANA_PRIVATE_KEY="your-base58-solana-private-key"
export BASE_PRIVATE_KEY="0x-your-hex-base-private-key"

Cursor

Add to .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):

{
  "mcpServers": {
    "clawswap": {
      "command": "npx",
      "args": ["-y", "@clawswap/mcp-server"],
      "env": {
        "SOLANA_PRIVATE_KEY": "your-base58-solana-private-key",
        "BASE_PRIVATE_KEY": "0x-your-hex-base-private-key"
      }
    }
  }
}

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "clawswap": {
      "command": "npx",
      "args": ["-y", "@clawswap/mcp-server"],
      "env": {
        "SOLANA_PRIVATE_KEY": "your-base58-solana-private-key",
        "BASE_PRIVATE_KEY": "0x-your-hex-base-private-key"
      }
    }
  }
}

OpenAI Codex

codex mcp add clawswap -- npx -y @clawswap/mcp-server

Or add to ~/.codex/config.toml:

[mcp_servers.clawswap]
command = "npx"
args = ["-y", "@clawswap/mcp-server"]
env = { SOLANA_PRIVATE_KEY = "your-base58-solana-private-key", BASE_PRIVATE_KEY = "0x-your-hex-base-private-key" }

Antigravity

Add to ~/.gemini/antigravity/mcp_config.json:

{
  "mcpServers": {
    "clawswap": {
      "command": "npx",
      "args": ["-y", "@clawswap/mcp-server"],
      "env": {
        "SOLANA_PRIVATE_KEY": "your-base58-solana-private-key",
        "BASE_PRIVATE_KEY": "0x-your-hex-base-private-key"
      }
    }
  }
}

Smithery

npx -y @smithery/cli install @clawswap/mcp-server --client claude

Supports multiple clients: claude, cursor, windsurf, cline, vscode, and more.

Tools

`clawswap_bridge`

Bridge tokens between Solana and Base. Handles the entire flow automatically.

Parameter	Type	Required	Description
`amount`	string	yes	Human-readable amount, e.g. "100", "0.5"
`token`	string	yes	Token symbol: USDC, USDT, SOL, ETH, WETH
`from`	"solana" \| "base"	yes	Source chain
`to`	"solana" \| "base"	yes	Destination chain
`recipient`	string	no	Destination address (defaults to agent's own)
`destinationToken`	string	no	Destination token (defaults to same or USDC)
`slippage`	number	no	Slippage tolerance 0-1 (default 0.01)

`clawswap_quote`

Preview a bridge quote without executing. Free, no payment required.

Same parameters as clawswap_bridge minus recipient.

`clawswap_status`

Check the status of a previously initiated bridge.

Parameter	Type	Required	Description
`requestId`	string	yes	The requestId from `clawswap_bridge`

Environment Variables

Variable	Required	Description
`SOLANA_PRIVATE_KEY`	For Solana→Base	Base58-encoded Solana private key
`BASE_PRIVATE_KEY`	For Base→Solana	0x-prefixed hex Base/EVM private key
`SOLANA_RPC_URL`	No	Solana RPC (default: `https://api.mainnet-beta.solana.com`)
`BASE_RPC_URL`	No	Base RPC (default: `https://mainnet.base.org`)

You only need keys for the direction(s) you want to bridge. The server starts with whatever is configured.

Fees

Solana → Base: $0.50 USDC (paid automatically via x402 protocol, gas sponsored by ClawSwap)
Base → Solana: Free (agent pays ~$0.001 Base gas directly)

Supported Tokens

Solana: USDC, USDT, SOL
Base: USDC, USDT, ETH, WETH

License

MIT

Reviews

5.01 rating

John Warmann3 months ago

Does what it says. Makes sending tokens between Solana and Base easy

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Clawswap MCP Server

About

Security Report

Findings (5)Action required

Permissions Required

What You'll Need

How to Install

Documentation

@clawswap/mcp-server

What can it do?

Installation

Claude Desktop

Claude Code

Cursor

Windsurf

OpenAI Codex

Antigravity

Smithery

Tools

`clawswap_bridge`

`clawswap_quote`

`clawswap_status`

Environment Variables

Fees

Supported Tokens

License

Reviews

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