MCP security checks — WARDEN and HISTOR

dev.modelmarket/mcp-securityVersion 1.0.0

Scan MCP tool definitions for poisoning, look up server history, count tool-list tokens. Free.

Status

Responds421 msNov 14, 2026, 14:27 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:27 UTC
Latency: 421 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://modelmarket.dev/tools/mcp/securityResponds421 msNov 14, 2026, 14:27 UTC

No sign-in

Claude Code

claude mcp add --transport http mcp-security https://modelmarket.dev/tools/mcp/security

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: mcp-security
Remote MCP server URL: https://modelmarket.dev/tools/mcp/security

Cursor

{
  "mcpServers": {
    "mcp-security": {
      "url": "https://modelmarket.dev/tools/mcp/security"
    }
  }
}

VS Code

code --add-mcp '{"name":"mcp-security","type":"http","url":"https://modelmarket.dev/tools/mcp/security"}'

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Tools

4 tools

Tools of MCP security checks — WARDEN and HISTOR
	Description		Read-only	Idempotent	Open world
`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.	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.	No	Yes	Yes	Yes
`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.	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.	No	Yes	Yes	Yes
`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.	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.	No	Yes	Yes	Yes
`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').	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').	No	Yes	Yes	Yes

Details

Registry status: Active
Published: Oct 20, 2026
Updated: Oct 20, 2026
Website: https://modelmarket.dev/tools/⁠ (opens in a new tab)
Repository: https://github.com/alexar76/warden⁠ (opens in a new tab)
Categories (suggested): SecuritySuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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