Search tools for finding Lean theorems, lemmas, and definitions in Mathlib
Scanned 9/12/2026
Install to Claude Code
Skills Directorynpx -y skills add project-numina/numina-lean-agent --skill search --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: search
description: "Search tools for finding Lean theorems, lemmas, and definitions in Mathlib"
---
# Search Tools
Tools for finding relevant Lean theorems, lemmas, and definitions. All scripts are in `skills/cli/`.
## Available Tools
| Tool | Purpose | When to use |
|------|---------|-------------|
| **leanexplore** | Semantic search by natural language or Lean terms | First choice for any search; **max 5 parallel queries** |
| **loogle** | Pattern-based search by type shape | When you know the type signature pattern |
| **leanfinder** | Mathlib semantic search | Alternative semantic search |
| **leansearch** | Natural language + Lean term search | Alternative to leanexplore |
| **state-search** | Search by proof goal/state | When you have a specific proof state to match |
| **hammer-premise** | Premise retrieval for automation | When looking for premises for automated tactics |
For full parameters and examples, read the corresponding `reference-<tool>.md` file in this directory.
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