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io.github.stillmarcus24/stillos-swap-mcp

Official registry Finance and payments

Non-custodial Solana swap via Jupiter, 0.25% fee, free scam-check on every token you buy.

Source code Documentation

What can you do with io.github.stillmarcus24/stillos-swap-mcp?

  • build_solana_swap — { userPublicKey, inputMint, outputMint, amount } → { swapTransaction (base64, unsigned), expectedOut, route, routerFee, safety }. Sign and send the transaction yourself. When buying a non-stablecoin, safety carries an on-chai...
  • token_scam_check — { mint } → { verdict (CLEAN/RISK/UNKNOWN), mintAuthority, freezeAuthority, flags }. Established issuer tokens (USDC/USDT/SOL) are allowlisted. Read-only, no keys.

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package stillos-swap-mcp
Claude Code 
claude mcp add stillos-swap-mcp -- npx -y stillos-swap-mcp@1.0.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "stillos-swap-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "stillos-swap-mcp@1.0.0"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. stillos-swap-mcp
  2. MCP
  3. CLI
  4. Why the scam-check matters

stillos-swap-mcp

Non-custodial Solana swap routing for agents. Best-price execution via Jupiter, a flat 0.25% router fee (cheaper than Trojan/Photon/GMGN at 0.5–1%), and a free on-chain scam-check on every token you buy.

You keep custody. The tool returns an unsigned transaction — you sign it with your own key and broadcast. StillOS never touches your funds.

MCP

{
  "mcpServers": {
    "stillos-swap": { "command": "npx", "args": ["-y", "stillos-swap-mcp", "mcp"] }
  }
}
Tools
  • build_solana_swap — { userPublicKey, inputMint, outputMint, amount } → { swapTransaction (base64, unsigned), expectedOut, route, routerFee, safety }. Sign and send the transaction yourself. When buying a non-stablecoin, safety carries an on-chain verdict (CLEAN / TRAP) based on live mint & freeze authority.
  • token_scam_check — { mint } → { verdict (CLEAN/RISK/UNKNOWN), mintAuthority, freezeAuthority, flags }. Established issuer tokens (USDC/USDT/SOL) are allowlisted. Read-only, no keys.

CLI

npx stillos-swap-mcp check <mint>
npx stillos-swap-mcp swap <yourPubkey> SOL USDC 0.5

Why the scam-check matters

A live mint authority means the dev can print unlimited supply and dilute you to zero. A live freeze authority means the dev can freeze your tokens so you can never sell. Both are the most common rug vectors on pump.fun. This checks them before you buy — free.

SOLANA_RPC env var overrides the default public RPC for the safety check.

MIT · StillOS / NolaWealth

Frequently asked questions

What is io.github.stillmarcus24/stillos-swap-mcp?

Non-custodial Solana swap via Jupiter, 0.25% fee, free scam-check on every token you buy.

How do I install io.github.stillmarcus24/stillos-swap-mcp?

It runs on your machine. In Claude Code: claude mcp add stillos-swap-mcp -- npx -y stillos-swap-mcp@1.0.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.stillmarcus24/stillos-swap-mcp need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.stillmarcus24/stillos-swap-mcp open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains io.github.stillmarcus24/stillos-swap-mcp?

It is published by stillmarcus24. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.