MCP security checks — WARDEN and HISTOR
Scan MCP tool definitions for poisoning, look up server history, count tool-list tokens. Free.
| Endpoint | https://modelmarket.dev/tools/mcp/security (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 4 tools · grade D (55) · pin ts_5f2abf70d360c0d81723787226b39ca4 · protocol 2025-06-18 |
| First / last listed | 2026-11-05 01:35 UTC / 2026-11-05 01:35 UTC |
| Grade over time | 2026-11-05: D (55), 4 tools |
Is this your server? Own a server? ToolFit hosted watch re-checks it every 24 h ($0.25 per 30 days) or 6 h ($0.60) and sends you an HMAC-signed webhook when its tools or grade change: POST https://api.youraitools.co/toolfit/v1/watch. To opt out, see About & opt-out.
Tools: warden_scan histor_check tool_list_cost x402_check
warden_scan | Scan an MCP server's tools/list with WARDEN, the open-source MCP firewall: static rules and a threat list over every name, description, schema and annotation. Returns allow or block and each finding with its rule and severity. Quoted fragments of the scanned text are left out of the answer. params: tools*, server |
histor_check | Look up an MCP server in HISTOR, a public append-only log of MCP tool sets: when its tool set was first pinned, how often it changed, and what the pattern scan found. HISTOR answers from its own observations and never contacts the server. params: endpoint, name |
tool_list_cost | How many tokens an MCP server's tool list adds to every model request, what that costs per 1,000 requests, the heaviest tools, and where it sits among 18,204 packages and 16,170 remote servers. Send a tools/list or name a server HISTOR observes. params: tools, server |
x402_check | Check a signed x402 USDC payment before submitting it: recovers the EIP-712 signer, runs USDC's own checks and the seller's terms, and when the signature fails names the domain it was really made for (e.g. Base Sepolia's 'USDC' used on Base, where USDC is 'USD Coin'). params: x_payment, requirements, authorization, signature, network |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.