stillos-swap-mcp
Non-custodial Solana swap routing with best-price execution, flat 0.25% fee, and built-in on-chain scam checking for token safety.
README
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,safetycarries 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
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