Prompt Rejector MCP

Item: Prompt Rejector MCP
Rating: 74
Author: M8ven

Protects AI agents from prompt injection attacks, jailbreak attempts, and common web vulnerabilities by screening untrusted input through semantic LLM analysis and static pattern matching.

→ revsmoke/promptrejectormcp · listed on glama

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// key findings

🚨

Secret credentials may flow to a network call

1 flow detected: GITHUB_TOKEN. We can’t prove the destination matches the brand the credential belongs to.

⚠️

Known vulnerabilities in dependencies: 1 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

🔐

You'll be asked for 7 credentials: ANTHROPIC_API_KEY, CANARY_HMAC_SECRET, GEMINI_API_KEY, GITHUB_TOKEN, HF_TOKEN, NVD_API_KEY, PATTERN_INTEGRITY_SECRET

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies1 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.25.3GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

🔐 secretANTHROPIC_API_KEY

configCANARY_DEFAULT_TTL_SECONDS

🔐 secretCANARY_HMAC_SECRET

configCORS_ORIGIN

🔐 secretGEMINI_API_KEY— echo "=your_key_here" > .env

🔐 secretGITHUB_TOKEN— GHSA GraphQL v1.1.0 securityVulnerabilities query with ecosystem filter — richer metadata than REST, requires

🔐 secretHF_TOKEN

🔐 secretNVD_API_KEY— your_nvd_key

🔐 secretPATTERN_INTEGRITY_SECRET— Falls back to when unset

configPORT

configSTART_MODE

configTASTE_TESTER_ENABLED

configTASTE_TESTER_MAX_TOKENS

configTASTE_TESTER_MAX_TURNS

configTASTE_TESTER_MODEL— claude-opus-4-7

configTASTE_TESTER_TIMEOUT_MS

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/revsmoke-promptrejectormcp-ru1yve)](https://m8ven.ai/mcp/revsmoke-promptrejectormcp-ru1yve)

commit: 2f3a83c266009afa84cc235c43abd7db3d7e6fe3

code hash: da3b105048429fec79e729d9b85ea010ca04411572e8ee9ad5d859cd3b0c3ff2

verified: 7/19/2026, 8:44:38 AM

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