loophole tape: Solana token safety MCP server

loophole tape — Solana token safety and pump.fun rug checks, free to $0.025 a call

Base URL: https://api.loopholetape.com Payment: x402 v2, scheme exact, USDC on Solana mainnet (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) or Base (eip155:8453). Solana payments are settled by https://facilitator.payai.network, Base payments by Coinbase's facilitator https://api.cdp.coinbase.com/platform/v2/x402. Every 402 lists both networks in accepts[]; pay whichever your wallet supports. The facilitator pays the network fee on either chain; a caller needs only USDC. No account or API key required. Version: 0.9.0 (schema 2.0)

Check one mint for $0.005, or up to five caller-selected mints for $0.01 total. Every result carries calibrated probabilities, P(rug within 5 minutes) for checks younger than 30 seconds and P(true graduation) at any age, fitted on our own capture and validated out of time; the validation tables are public at /v1/calibration. Get observed creator exits, early-wallet selling, drains, migration state, concentration and buyer flow in a compact JSON result. Use it before a swap or to monitor a position. Findings carry first-observed times and evidence; noflagsobserved means no documented flags were observed, not that a token is safe.

Free coverage, free watch availability, no charge for unchanged watched events. New paid checks require full live coverage for every mint and feed lag no greater than five seconds. An unpaid request with well-formed mints returns the ordinary 402 quote; when the payment (or prepaid key) arrives, uncovered mints are refused unpaid before verification with live_examples (mints covered right now) and the free /v1/radar to pick from, and eligibility is checked again after verification. Stale feeds and malformed mints are refused before payment. The existing full card remains $0.025 and the existing free routes remain free.

Local MCP server: one command, pays from your own wallet

loopholetape-mcp is a small local MCP server (stdio) for Claude Desktop, Claude Code, Cursor and any other MCP client. It lists this API's tools and pays the paid ones per call in USDC, signed on your machine, from a Solana wallet or a Base (EVM) wallet. Most MCP clients cannot sign an x402 payment; this does it for them. No account, no subscription.

Claude Desktop: download loopholetape-mcp-0.1.0.mcpb and open it. The wallet key is optional; the app keeps it in the system keychain.

Any MCP client (Node.js 20 or newer):

{
  "mcpServers": {
    "loopholetape": {
      "command": "npx",
      "args": ["-y", "https://github.com/gosadu/loophole-tape/releases/download/mcp-v0.2.0/loopholetape-mcp-0.2.0.tgz"],
      "env": { "SOLANA_KEYPAIR_PATH": "/absolute/path/to/a-small-wallet.json" }
    }
  }
}

Claude Code: claude mcp add loopholetape -e SOLANAKEYPAIRPATH=/absolute/path/to/a-small-wallet.json -- npx -y https://github.com/gosadu/loophole-tape/releases/download/mcp-v0.2.0/loopholetape-mcp-0.2.0.tgz

What is free and what costs. tokensafety is free for every Solana mint: mint and freeze authority, Token-2022 holder risks, the ten largest token accounts, the launch venue, and a verdict word with its reason. For a pump.fun launch in its first hours it also buys the $0.01 verdict with calibrated rug and graduation odds; depth=free never pays, and nothing is bought when the paid answer would add nothing. The other paid tools cost $0.001 to $0.04 a call and say so in their description. radar, marketregime, checkcoverage and walletstatus are free. With no wallet and no key, the free tools work and a shared trial key answers a few paid calls a day.

Shortened. The full README is on GitHub.