circuit

circuit gives Claude facts about AI tools that it can't know from training data. Ask which tools to use for something you're building, whether two tools work together, or whether your stack holds up, and circuit answers from its own record of AI tools, models, libraries, vector stores, frameworks and MCP servers.

Every fact comes with a trust tier and a date. Verified connections were installed and run together by circuit in the last 30 days, with a public log as evidence. Checked records passed an automated cross-check against their own docs and registries. Indexed records come from public registries and are labelled as such. When circuit has no evidence that two tools connect, it says so instead of guessing.

What you can ask:

• "Which open-source vector databases suit a RAG app right now?" (search)
• "Does LangChain actually work with Pinecone, and what's the evidence?" (check if two tools connect)
• "I want to build a voice agent that books appointments. What should I use?" (find build routes)
• "Is LlamaIndex + Qdrant + Ollama a sound stack?" (check a tool stack)
• "Compare Chroma and Weaviate for a small project." (compare tools)

All six tools only read circuit's records; none changes anything. Rankings are never paid for: no vendor can buy a tier or a placement. Connecting asks you to sign in once; a free account covers every tool.