MCP Prompt Tester
Enables testing and comparison of LLM prompts across OpenAI and Anthropic providers with configurable parameters, multi-turn conversation management, and seamless API key integration via environment variables or .env files using the Model Context Protocol.
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Free tier available • No credit card required
Your OpenAI API key
Your Langfuse secret key for tracing and observability of LLM calls (optional)
Your Anthropic API key
Your Langfuse public key for tracing and observability of LLM calls (optional)
URL of your Langfuse instance for tracing and observability of LLM calls (optional)
Security Notice
Your environment variables and credentials are securely stored and encrypted. LangDB never shares these configuration values with third parties.
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