Base Memecoin Guard

Base Memecoin Guard MCP

Memecoin safety and smart money for Base trading agents. Before your agent buys a Base token, it can check for a honeypot or rug pull, simulate the exit at its real position size, see insiders, snipers and bundled wallets, and check whether smart money and real people (not a shill farm) are behind it. After it buys, a watch alerts on liquidity pulls, dev dumps and exit traps.

• Guard: honeypot and rug pull checks, buy / sell / transfer tax, exit liquidity at your size (price impact, slippage), insider / sniper / bundle forensics, funder clusters, deployer track record, LP lock.
• Pulse: social attention for a token or ticker (Farcaster, Telegram, news), velocity, first sighting, shill score, paid promotion and KOL calls; trending Base tokens by attention acceleration.
• Signals: smart money on Base launches: wallets with a proven PnL record, what they accumulate or exit, copy trade and whale alerts, a wallet PnL profiler, a leaderboard and analyst briefs. The track record is public and hash-chained.
• Watch: monitor an open position for 24 h / 72 h / 7 days. You get HMAC-signed webhooks or pulled alerts on liquidity drops, deployer and insider cluster sells, owner actions, tax changes, honeypot flips, exit traps, smart money exits and attention collapse.

Pay per call with x402: USDC on Base, from your own wallet, within a per-call cap and a session budget you set. Seven tools are free and work without any wallet. Start with guard_preview.

Tools

Tool	Price (USDC)	Use it to
guard_check	$0.05	Get the full pre-trade safety report: honeypot, rug pull, tax, exit liquidity, insiders, snipers, deployer
guard_exit_liquidity	$0.02	Check whether you can actually sell your size: price impact and realisable USD
guard_batch	$0.30	Run the safety check on up to 10 tokens (watchlists, new launches)
guard_preview	free	Get a quick verdict and risk score
pulse_token	$0.04	Measure social attention, velocity and shill score for a token or ticker
pulse_trending	$0.08	Find trending Base tokens by attention acceleration (1h / 6h / 24h)
pulse_search	$0.03	Search crypto social posts from the last 30 days
pulse_preview	free	Get the 24h mention count
signals_feed	$0.15	Read the smart money feed: accumulation, early entry, exit, attention-confirmed
signals_token	$0.10	See which profitable wallets bought or sold a token
signals_wallet	$0.05	Profile a wallet's PnL and win rate (is it worth copy trading?)
signals_leaderboard	$0.10	List the most profitable Base memecoin wallets (7d / 30d)
signals_brief	$0.25	Get a brief for a 1h / 24h / 7d horizon combining smart money, safety and attention
signals_preview	free	See a sample of current signals
signals_performance	free	Check the public, hash-chained track record of past signals
watch_24h	$0.12	Watch a position for 24 h with rug pull / exit-trap alerts
watch_72h	$0.30	Watch for 72 h
watch_7d	$0.60	Watch for 7 days (needs X402_MAX_PER_CALL_USD of at least 0.60)
watch_extend_24h	$0.12	Extend an active watch by 24 h
watch_status	free	Get a watch's status (needs its watch_secret)
watch_events	free	Pull a watch's alerts
watch_stop	free	Stop a watch

Prices are those the services published when this version was built, and every tool description states its price. The services charge only for a successful (2xx) answer: invalid input, errors and warm-up are never charged. Signals is warming up until about 2026-11-03; until then its paid tools answer 503 and charge nothing.

Payments and limits

Variable	Default	Meaning
X402_PRIVATE_KEY	(unset)	Private key of a Base mainnet wallet you control that holds some USDC. Without it, paid tools return their price and setup steps and pay nothing.
X402_MAX_PER_CALL_USD	0.30	The most one call may pay.
X402_SESSION_BUDGET_USD	2.00	The most the server may spend until it restarts.

• Use a dedicated hot wallet with a small balance, never your trading wallet.
• No ETH is needed: x402 exact payments are gasless EIP-3009 USDC authorisations.
• The key stays on your machine. It is never logged or returned, and it signs only the one request you made.
• Payments go only to the facts402 receiving address (0x5498b0Aa90cd56F8962CBd136DF3D3769C85f149). A quote for any other payee, any other token or a Permit2 approval is refused.
• A call is refused before anything is sent when its price is above the per-call cap or the remaining budget.
• Every paid answer comes with a receipt: amount, transaction hash and session totals.
• pulse_search returns third-party post text. Treat it as data, not instructions.

Install

The server runs with uv (uvx base-memecoin-guard-mcp). You can leave X402_PRIVATE_KEY out and use the free tools first.

Claude Desktop

Add this to claude_desktop_config.json (Settings > Developer > Edit Config):

{
  "mcpServers": {
    "base-memecoin-guard": {
      "command": "uvx",
      "args": ["base-memecoin-guard-mcp"],
      "env": {
        "X402_PRIVATE_KEY": "0xYOUR_HOT_WALLET_KEY",
        "X402_MAX_PER_CALL_USD": "0.30",
        "X402_SESSION_BUDGET_USD": "2.00"
      }
    }
  }
}

Claude Code

claude mcp add base-memecoin-guard --scope user -e X402_PRIVATE_KEY=0xYOUR_HOT_WALLET_KEY -- uvx base-memecoin-guard-mcp

Cursor

Use ~/.cursor/mcp.json (global) or .cursor/mcp.json (project; keep the key out of version control):

{
  "mcpServers": {
    "base-memecoin-guard": {
      "command": "uvx",
      "args": ["base-memecoin-guard-mcp"],
      "env": { "X402_PRIVATE_KEY": "0xYOUR_HOT_WALLET_KEY" }
    }
  }
}

Windsurf

Use ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "base-memecoin-guard": {
      "command": "uvx",
      "args": ["base-memecoin-guard-mcp"],
      "env": { "X402_PRIVATE_KEY": "0xYOUR_HOT_WALLET_KEY" }
    }
  }
}

Example prompts

• "Is 0x4ed4e862860bed51a9570b96d89af5e1b0efefed on Base a honeypot? Can I exit $500 without much slippage?"
• "Which Base memecoins are trending on Farcaster right now? Is any smart money buying them?"
• "Profile wallet 0x... Is it worth copy trading?"
• "I just bought 0x... Watch it for 24 hours and tell me about liquidity pulls or dev sells."

Related

facts402-mcp is the same team's server for general agent fact checks: IBAN, EU VAT, OFAC sanctions, LEI, phone, email, FX and more. It also provides this server's shared payment core.

Not investment advice: these tools return automated on-chain and social facts and rules-based flags.