Voice Agent Linter

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "voice-agent-linter": {
      "type": "http",
      "url": "https://mcp.modernmustardseed.com/voice-linter"
    }
  }
}

3 tools

• lint_voice_agent

  Check a phone voice agent’s system prompt and, optionally, its config JSON (Vapi assistant, Retell agent or LLM, ElevenLabs agent, or OpenAI Realtime session) against rule-based checks learned on live calls. Finds: no live date and dates without a year; phone numbers, emails…

• list_lint_rules

  List every Voice Agent Linter rule with its id, title, default severity, category, what it reads (prompt, config or both) and the platforms it applies to. Filter by platform or category. Static reference, no network access.

• explain_lint_rule

  Explain one Voice Agent Linter rule by id: why it exists, a bad and a good example, the fix, the platforms it applies to, and its sources with the date each was read. Static reference, no network access.

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