Under the Hood
No magic.
Just good engineering.
Every query enriched with codebase context. Every task routed to the right specialist. Every autonomous run recoverable. Here is exactly how it works.
One command.
Full engineering stack.
npx create-merlin-brain installs everything into your Claude Code configuration. No global binaries. No Docker. No cloud dependency for the free tier.
The MCP server starts instantly in every terminal session. Agents, commands, and hooks load on demand — zero startup overhead.
Every query,
fully enriched.
Without Merlin, Claude sees only your message. With Sights, every request is enriched with the relevant code, past decisions, and project conventions — before Claude writes a single line.
The knowledge graph is built from your codebase using OpenAI embeddings and pgvector. Queries return results in milliseconds, not seconds.
Right agent.
Fresh context. Every time.
When you describe a task, Merlin scores it against 34 local agents and 1,000+ cloud-indexed agents. The best match gets spawned as a completely fresh process with its own 200K context window.
This is not function-calling or prompt-switching. Each agent is a separate Claude instance with a custom system prompt optimized for its domain. It starts clean, works autonomously, and returns structured results.
Hours of work.
Zero babysitting.
The Merlin Loop takes a plan with N tasks and executes them sequentially — each in a fresh Claude process with full 200K context. No degradation. No hallucinations from context overflow.
If a process crashes, the loop recovers from the last checkpoint and retries. Five consecutive failures trigger the circuit breaker — it stops safely instead of creating garbage.
See for yourself.
30 seconds to install. Instant context on your first query.
Free forever. No credit card. No signup.