🛡️ RugCheck AI — On-chain Token Safety for Solana AI Agents

A lightweight MCP server that reads a Solana token's mint directly from the chain to screen for the common rug & honeypot traps before your agent trades — active mint/freeze authority and dangerous Token-2022 extensions (permanent delegate, transfer hooks, non-transferable, pausable) — then, for tokens that pass, builds the buy as an unsigned Jupiter transaction carrying a small Jito tip for faster inclusion. You sign it; the server never holds keys.

Quickstart (30 seconds)

No install, no API key. Point your agent at the remote endpoint:

https://web-production-58d585.up.railway.app/mcp

Then ask one question before any buy:

scan_token("DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263")   # BONK
→ { verdict: "SAFE", safety_score: 100, sellable: true, risks: ["no red flags found"] }

SAFE → clear. CAUTION → read the risks. DANGER → don't buy. That's the whole loop.

Related MCP server: CryptoGuard

See it catch a rug

Three real mainnet tokens, one scan_token call each (scanned 2026-06-17 — re-run to verify, live state changes):

The honeypot is the one that matters: you could buy it and never sell. RugCheck AI flags it before your agent spends a cent — even though the token is too new to be indexed anywhere else. Even USDC comes back CAUTION, not SAFE, because the issuer can still freeze your balance — the verdict tells you the truth, not a marketing label.

Tools

Screening

• scan_token — full safety report in one call: authority, Token-2022 traps, honeypot, liquidity & holder concentration → SAFE/CAUTION/DANGER + a 0–100 score

• is_safe — quick yes/no gate: one boolean before you trade

• verify_token_safety — on-chain audit: mint/freeze authority + Token-2022 traps + live market

• check_authorities — mint / freeze authority and extension detection

• simulate_sell — can the token actually be sold? (honeypot check)

• simulate_trade — full round-trip (buy then sell back): real entry/exit cost & round-trip loss %

• check_liquidity — DEX liquidity, 24h volume, age, buys/sells

• holders_breakdown — top-holder concentration (dump risk)

• token_age — freshness + real trading activity

• rug_forecast — heuristic rug ETA: probability + urgency window + factors

• scammer_dna — intent score (0–100): how much the token's structure looks like a deliberate scam

• check_deployer — the wallets that hold power over the token

• compare_tokens — rank a basket of tokens safest-first

• batch_scan — scan up to 10 tokens at once, one report each

Execution

• execute_safe_swap — re-screens the mint, then builds a Jito-tipped Jupiter swap (unsigned); refuses tokens that scan DANGER

Connect

Remote (Streamable HTTP) — no install, point your agent at:

https://web-production-58d585.up.railway.app/mcp

Listed on the official MCP Registry as io.github.MrWizardlyLoaf/rugcheck-ai.

Self-host:

pip install -r requirements.txt
SOLANA_RPC=<your-rpc-url> python server.py

Add it to your agent

Cline / Claude Dev (VS Code) — in cline_mcp_settings.json:

{ "mcpServers": { "rugcheck-ai": { "url": "https://web-production-58d585.up.railway.app/mcp" } } }

Claude Desktop — in claude_desktop_config.json:

{ "mcpServers": { "rugcheck-ai": { "command": "npx", "args": ["-y", "mcp-remote", "https://web-production-58d585.up.railway.app/mcp"] } } }

Cursor — Settings → MCP → Add → Streamable HTTP, then paste the endpoint URL.

Any MCP client — it's a standard Streamable HTTP MCP server; point your client at the /mcp endpoint and the 15 tools appear.

Why

Most agents trade Solana tokens blind. RugCheck AI calls getAccountInfo on the mint and reads the authorities and Token-2022 extensions itself, so you get a real verdict on a fresh launch instead of unknown — and a live mint or freeze authority is flagged before you buy, not after.

Use it when

Your agent needs to answer, before it spends a cent:

• Is this Solana token safe to buy — or is it a rug pull?

• Is this a honeypot — will I actually be able to sell after I buy?

• Does the mint have an active freeze / mint authority that can trap or dilute me?

• Is there a hidden Token-2022 trap (permanent delegate, transfer hook) that can drain me?

• Pre-trade screening / token due-diligence for an autonomous trading agent.

Built for AI trading agents, snipers and bots that buy SPL / Token-2022 tokens and need a fast on-chain rug check before entering — then a screened Jupiter route once a token clears.

FAQ

How do I check if a Solana token is safe to buy? Call scan_token(mint) — one call returns a SAFE / CAUTION / DANGER verdict covering mint/freeze authority, Token-2022 traps, honeypot (sellability), liquidity and holder concentration, plus a 0–100 safety score.

How do I detect a honeypot before buying? simulate_sell(mint) checks whether a live sell route exists — a token with no route is effectively a honeypot even when nothing on-chain formally blocks selling.

How do I check holder concentration / whale dump risk? holders_breakdown(mint) reports the largest wallets and what share of supply they control — high concentration means one holder can crash the price on you.

How do I know if a token is a rug pull? rug_forecast(mint) gives a heuristic rug probability and urgency window from real signals (authority, Token-2022 traps, concentration, sell pressure, age). check_authorities and check_deployer show exactly who holds power over the token.

Does it work on fresh / newly launched tokens? Yes — it reads the mint directly on-chain (getAccountInfo), so you get a real verdict on a token too new to be indexed elsewhere. token_age shows freshness and real trading activity.

Does it touch my wallet or sign anything? No. Screening is read-only; execute_safe_swap only builds an UNSIGNED transaction for you to sign — the server never holds keys, never signs, never sends.

Is it free? Do I need an API key? Remote server, no install, no API key. Point your agent at the endpoint and call the tools.

Status

v1.2.0 — working, actively developed, CI-tested. Open source, auditable — the screening tools are read-only (getAccountInfo); execute_safe_swap only builds an unsigned transaction for you to sign.

MIT licensed. Self-hostable. Built for Solana trading agents.