revsmoke

Promptrejectormcp — AI skill for Claude Code

AI community

Prompt Rejector protects your AI-powered applications from prompt injection attacks, jailbreak attempts, and traditional web vulnerabilities.

How to install Promptrejectormcp

This entry records only its repository, not the path inside it, so there is no exact command to give. Open revsmoke/promptrejectormcp and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Promptrejectormcp does

Prompt Rejector protects your AI-powered applications from prompt injection attacks, jailbreak attempts, and traditional web vulnerabilities.

Alternatives in AI

  • Hol Guard — Open-source antivirus for AI agents: block risky tools, secret access, prompt injection, malicious packages, M 485 ★
  • Prismor — Self-hosted runtime control plane for AI agents 334 ★
  • Engineering Notebook — A Bun CLI that ingests Claude Code and Codex session transcripts, generates LLM-powered daily summaries, and s 320 ★

README

Prompt Rejector

**Screen prompts, skill files and MCP tool descriptions before an AI agent acts on them.**

Prompt Rejector combines deterministic security checks, focused **TypeSafe Jev judgments**, and a configurable reasoning model. The active configuration uses TypeSafe and Gemini; Claude and OpenAI adapters are available through model configuration.

Use it from Connection Start command
An application or script HTTPS API: https://localhost:3001 npm start
Codex / Claude Code Plugin + MCP over stdio Install the plugin or configure the Node launcher
Claude Desktop chat Bundled .mcpb extension + skill Desktop installation
ChatGPT / Claude web Skill + tunnel or authenticated remote MCP Web connection guide

The local API and MCP connections can run together and use the same analysis configuration. Prompt checks use **`POST /v2/check-prompt`**. `/v2` is the only current API; `/v1` is retired. MCP keeps all 11 tool names and needs no version selector.

**Already using Bryan's local installation?** The HTTPS service and Codex MCP entry are configured. Go to the [local service runbook](https://github.com/revsmoke/promptrejectormcp/blob/codex/typesafe-model-routing/docs/operations/local-server.md#installed-macos-service) for status and restart instructions; do not start a second server on port 3001.