Sherlock: Apple Developer Docs as Local MCP for Claude Code
Sherlock is a Claude Code plugin that gives Claude a local, searchable copy of Apple's full developer documentation. It indexes ~70,000 symbols across 300+ frameworks into SQLite FTS5 and serves them as MCP tools. The goal: stop Claude from hallucinating Apple API method names, deprecated symbols, or non-existent frameworks.
What It Does
Sherlock provides 5 MCP tools for querying the local doc index, plus 3 skills that auto-trigger lookups when you ask about Apple APIs. This grounds Claude in actual Apple documentation rather than relying on training data.
Installation
Add the plugin from the Claude Code plugin marketplace:
/plugin marketplace add hotfix-jobs/sherlock
/plugin install sherlockTechnical Details
The plugin uses SQLite FTS5 for full-text search across all indexed symbols. It covers 300+ Apple frameworks with roughly 70,000 symbols. The tool set allows Claude to look up specific APIs, search by keyword, and retrieve documentation snippets directly.
Who It's For
iOS/macOS developers using Claude Code who need reliable API references without leaving the editor.
Source & Repo
Open source project by hotfix-jobs on GitHub.
📖 Read the full source: r/ClaudeAI
👀 See Also
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