PromptBrake MCP MCP server

A read-only MCP server provided by PromptBrake that allows AI agents to generate prompt-injection test inputs, map OWASP LLM risks to test ideas, create AI agent release plans, and build response check packs for security testing without requiring an account or API key.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by PromptBrake

MCP endpoint (Streamable HTTP)

https://promptbrake.com/free-tools/mcp

Vendor documentation

What you can do with it

Generate prompt-injection test inputs for a chatbot
Map OWASP LLM risks to concrete test ideas
Plan AI agent release with gate policies
Build response check packs for refund bots

Tools advertised by the last live check:

get_prompt_injection_payloads
map_owasp_llm_risk
plan_adlc_release
build_test_pack

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http promptbrake-mcp https://promptbrake.com/free-tools/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add promptbrake-mcp --url https://promptbrake.com/free-tools/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable promptbrake-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "promptbrake-mcp": {
      "url": "https://promptbrake.com/free-tools/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "promptbrake-mcp": {
      "type": "streamableHttp",
      "url": "https://promptbrake.com/free-tools/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start promptbrake-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "promptbrake-mcp": {
      "type": "http",
      "url": "https://promptbrake.com/free-tools/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http promptbrake-mcp https://promptbrake.com/free-tools/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "promptbrake-mcp": {
      "url": "https://promptbrake.com/free-tools/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "promptbrake-mcp": {
      "serverUrl": "https://promptbrake.com/free-tools/mcp"
    }
  }
}

See all 957

Do you run PromptBrake MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

Claim this listing