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smgrep

@majiayu000/claude-skill-registry
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Semantic code search using natural language queries. Use when users ask "where is X implemented", "how does Y work", "find the logic for Z", or need to locate code by concept rather than exact text. Returns file paths with line numbers and code snippets.

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SKILL.md

name smgrep
description Semantic code search using natural language queries. Use when users ask "where is X implemented", "how does Y work", "find the logic for Z", or need to locate code by concept rather than exact text. Returns file paths with line numbers and code snippets.
allowed-tools Bash(smgrep:*), Read
license Apache-2.0

When to Use

Use this to find code by concept or behavior (e.g., "where is auth validated", "how are plugins loaded"). Note: This tool prioritizes finding the right files and locations in the code. Snippets are truncated (max 16 lines) and are often just previews.

Example:

smgrep "how are plugins loaded"
smgrep "how are plugins loaded" packages/transformers.js/src

Strategy for Different Query Types

For Architectural/System-Level Questions (auth, LSP integration, file watching)

  1. Search Broadly First: Use a conceptual query to map the landscape.
    • smgrep "authentication authorization checks"
  2. Survey the Results: Look for patterns across multiple files:
    • Are checks in middleware? Decorators? Multiple services?
    • Do file paths suggest different layers (gateway, handlers, utils)?
  3. Read Strategically: Pick 2-4 files that represent different aspects:
    • Read the main entry point
    • Read representative middleware/util files
    • Follow imports if architecture is unclear
  4. Refine with Specific Searches: If one aspect is unclear:
    • smgrep "session validation logic"
    • smgrep "API authentication middleware"

For Targeted Implementation Details (specific function, algorithm)

  1. Search Specifically: Ask about the precise logic.
    • smgrep "logic for merging user and default configuration"
  2. Evaluate the Semantic Match:
    • Does the snippet look relevant?
    • Crucial: If it ends in ... or cuts off mid-logic, read the file.
  3. One Search, One Read: Use smgrep to pinpoint the best file, then read it fully.

Output Format

Returns: path/to/file:line [Tags] Code Snippet

  • [Definition]: Semantic search detected a class/function here. High relevance.
  • ...: Truncation Marker. Snippet is incomplete—use read_file for full context.

Tips

  • Trust the Semantics: You don't need exact names. smgrep "how does the server start" works better than guessing smgrep "server.init".
  • Watch for Distributed Patterns: If results span 5+ files in different directories, the feature is likely architectural—survey before diving deep.
  • Scope When Possible: Use path constraints to focus: smgrep "auth" src/server/
  • Don't Over-Rely on Snippets: For architectural questions, snippets are signposts, not answers. Read the key files.
  • "Still Indexing...": If you see this, please stop, alert the user that the index is ongoing and ask them if they wish to proceed. Results will be partial until the index is complete.