MCP server for RugGuard — pre-trade rug-check API for AI agents. Wraps the x402 payment flow so Claude Desktop, Cursor, and other MCP-aware agents can call RugGuard without speaking x402 themselves.
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# rugguard-mcp MCP server for [RugGuard](https://rugguard.redfleet.fr) — pre-trade rug-check API for AI agents. Wraps the x402 payment flow so [Claude Desktop](https://claude.ai/download), [Cursor](https://cursor.sh), and other MCP-aware agents can call RugGuard without speaking x402 themselves. ## What it does Three paid MCP tools: - **`scan_token(chain, address)`** — runs 14 heuristics on Base + 5 on Solana SPL, returns a weighted risk score 0–100, a verdict (`safe | low_risk | medium_risk | high_risk | critical | uncertain`), and structured red flags (owner renounced, LP locked, honeypot signatures, top10 concentration, mint authority, bytecode similarity to known rugs via MinHash, deployer rug history, etc.). Pays $0.01 USDC on Base behind the scenes. - **`pretrade_check(chain, address, intended_trade_usd, policy)`** *(new in v0.2.0)* — the pre-trade firewall. Wraps the same engine as `scan_token` and overlays a prescriptive `block | caution | allow` decision plus a clamped `max_suggested_exposure_usd`, given the agent's risk policy (`conservative | balanced | aggressive`). Returns a signed JSON report (Ed25519) when the deployment has signing configured — verifiable offline via the [`rugguard-verify`](https://pypi.org/project/rugguard-verify/) CLI. Same $0.01 USDC price as `scan_token`. - **`explain_scan(scan_id)`** — replays a previously-cached scan's full per-heuristic audit trail. Pays $0.005 USDC. One free MCP resource: - **`rugguard://metrics`** — live empirical recall + per-chain sample counts, sourced from `/v1/metrics`. Free, no payment, no signature. Lets an agent (or a human reviewing the integration) audit per-heuristic recall **before** pointing a funded wallet at the paid tools. No competitor publishes their own miss rate — this is the differentiator made machine-discoverable. The server holds a dedicated Base-mainnet wallet and signs each EIP-3009 USDC `transferWithAuthorization` transparently. The agent never sees the payment friction. #…
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