Your AI knows everything.
Forgets nothing.
Merlin gives Claude Code, Cursor, Windsurf, and any AI agent a living wiki of your codebase, agents that are always the right fit for the job, and memory that never resets.
Sights
A living wiki of your codebase. Not documentation you maintain. Merlin analyzes your code and builds a knowledge base that AI agents query in milliseconds with full understanding.
- AI-native API
- A structured knowledge base your AI agents query directly. They navigate your code with full knowledge, using a fraction of the tokens and time.
- For humans too
- Browse your Sight in the dashboard. Architecture, patterns, conventions, all searchable.
- Auto-sync
- Updates on every commit. Never stale, never manual.
- Impact analysis
- Shows what breaks before you edit. Every dependent file, surfaced instantly.
- Semantic search
- Find code by meaning. Ask "where is payment retry logic" and get the right file.
- Adaptive refinement
- Iterative context that discovers terminology you don't know yet.
Agent Index
29 agents ship built-in. But the real power is the index. Merlin crawls the community daily, grades every agent it finds, and your AI pulls the right one for each task automatically.
- 29 built-in
- Product Spec, Architect, Implementation, Testing, Security, Refactor, Ops, Docs, Frontend, API Design, Performance, and more.
- Live cloud index
- Merlin crawls skills.sh, GitHub, and npm daily. Every agent is graded A++ to B and indexed.
- Contextual pull
- Your AI loads the index and pulls the right agent for the current task. Always the best fit, always relevant.
- Blend engine
- When no single agent fits, Merlin fuses capabilities from multiple agents into one.
- Custom team agents
- Define your own agent personas. Versioned and shared across your team.
- Fresh context
- Every agent spawn gets a clean 200K window. No bleed between tasks.
Public Sights
Just like agents and skills, public codebases are indexed and visible to your AI as it works. Need to see how a real team implemented auth or payments? Merlin already has it. The catalog grows with every repo analyzed. Humans browse it in the dashboard. AI agents reference it mid-task.
Workflows
Multi-agent pipelines. Each step runs in a fresh 200K context. A cold reviewer that never saw the original task verifies the output. Resumable at any step.
Feature Dev
Plan, implement, test, verify, open PR. Six steps, each in a fresh context.
Bug Fix
Triage, investigate root cause, fix, regression test, verify, PR.
Security Audit
Scan, prioritize, fix, independent review, security tests, PR.
Refactor
Analyze, plan, apply, verify behavior preservation, test, PR.
Memory
Nothing gets lost. Context persists across sessions, machines, and people.
- 01Learns how you work. Preferences, corrections, and patterns applied automatically.
- 02Project rules that persist forever. Every session, every agent.
- 03Any agent picks up exactly where another stopped. Full context restored.
- 04Planning docs, decisions, and tasks synced across machines and people.
- 05Team checkpoints, blocker reporting, and activity timeline. Full visibility.
Loop & Planning
Autonomous execution outside your session. 32 commands for the full project lifecycle.
Autonomous loop
Spawns fresh 200K instances per iteration. Three modes: auto, interactive, hybrid. Rate limited with circuit breakers. Ships while you sleep.
Full lifecycle planning
Project definition, requirements, roadmap, phases, execution. Research before you plan. Milestone auditing against original intent.
Quality gate
6-phase automated check: Build, Types, Lint, Tests, Security, Diff. Runs on demand or after every change.
No degradation
Each iteration gets a fresh context window. The 50th task is as sharp as the first.
How it looks
Install once.
Ship everything.
One install. Then trigger a full workflow with a single command. Plan, implement, test, PR.
Merlin connects what the community builds with the tools you already use. Agents, skills, and codebases from the ecosystem are indexed, graded, and available the moment your AI needs them.
Works with any MCP-compatible tool. Free tier available.
One command.
Everything included.
Sights, 29 agents, 4 workflows, autonomous loop, 32 commands, and MCP server. Installed globally in seconds.
npm
native (macOS / Linux)
curl -fsSL https://merlin.build/install.sh | sh