Search for tools, navigate pages, or compare tools
Search 12,000+ open source tools with natural language. Get compatibility checks, stack recommendations, and health scores — directly inside your AI agent.
Works with Claude · Cursor · VS Code · Windsurf · GitHub Copilot
Tools Indexed
Open source, ranked
Categories
From DB to DevOps
MCP Tools
Ready to use now
Searches This Week
By AI agents
What you get
From the first search to the final decision — ToolCairn's MCP tools handle the full discovery workflow inside your AI agent.
Describe what you need in plain English. ToolCairn searches thousands of tools and returns the best matches — ranked by relevance, health, and compatibility. Not just the most popular ones.
Real tools, real data
Quality scores computed from maintenance, community signals, and activity.
How it works
From a natural language description to a vetted recommendation — your agent handles the entire discovery flow.
Tell your AI agent what you're building. No keywords, no filters. ToolCairn understands context — frameworks, constraints, deployment targets.
ToolCairn searches across thousands of tools and asks smart follow-up questions when your query is ambiguous. It narrows down candidates using health signals and compatibility data.
Browse by category
Every category is continuously indexed, ranked, and kept up to date.
MCP Integration
Add ToolCairn to any MCP-compatible agent and instantly unlock intelligent tool discovery, comparison, and stack recommendations.
{
"mcpServers": {
"toolcairn": {
"command": "npx",
"args": ["@neurynae/toolcairn-mcp"]
}
}
}What developers say
We used to spend hours evaluating tools for each new project. ToolCairn cut that to minutes — our agents now recommend vetted tools with health data we can actually trust.
Arjun M.
AI Engineering Lead
I described my project in one sentence and got a complete stack recommendation. The compatibility checks alone saved me from three bad dependency choices.
Sarah K.
Solo Founder
I discovered that 400+ projects in ToolCairn's index are compatible with my library. It's like having a developer relations team I never had to hire.
Marcus L.
Open Source Maintainer
Add ToolCairn to your AI agent in 30 seconds. One config block, 16 tools, instant access to 12,000+ indexed developer tools.
Side-by-side health metrics, commit activity, and compatibility signals. Make informed decisions in seconds.
Maintenance
Community
Activity
Docs
Describe your project once. Get an opinionated stack with cross-compatible versions — peer deps and runtimes resolved across 35 package registries.
Get 1–2 top recommendations with quality scores, maintenance health, compatibility checks, and documentation links. Compare alternatives head-to-head if needed.
Agent Framework
Natural-language tool discovery with guided clarification
Head-to-head comparison with health metrics
Full stack recommendation for a project description
Verify if two tools are known to work together
Look up known bugs and issues for a specific tool
+ 9 more tools · project config, feedback, issue analysis
Compatibility