stillos-swap-mcp

Non-custodial execution infrastructure for digital-asset settlement on Solana. Best-execution routing across all venues via Jupiter aggregation, at a 0.25% fee — materially below prevailing bot-router pricing of 0.5–1%. Signing and custody remain entirely

latest

npm

Version: 1.0.1

Version published: 4 days ago

Weekly downloads: 168

Maintainers: 1

Weekly downloads

Created: 3 weeks ago

Source

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

Keywords

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Package last updated on 31 Jul 2026

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