feat: add search_documents tool for Redis documentation queries

[vchomakov]

Description

Adds a new search_documents tool that enables querying Redis documentation through natural language. This tool integrates with the Redis documentation API to provide contextual answers about Redis concepts, data structures, features, and use cases.

It also documents the new tool and its MCP_DOCS_SEARCH_URL configuration in the README, and adds unit tests to cover both successful and error scenarios.

Changes

• Added search_documents tool in src/tools/misc.py
• Added aiohttp dependency for HTTP API requests
• Updated server dependencies list to include aiohttp
• Updated integration tests to include the new tool
• Added comprehensive docstring with usage examples
• Documented the docs search tool and MCP_DOCS_SEARCH_URL configuration in README.md
• Added unit tests for search_documents in tests/tools/test_misc.py

Features

The search_documents tool supports queries about:

• Redis data structures (strings, hashes, lists, sets, sorted sets, streams, JSON)
• Caching strategies and patterns
• Vector search and semantic similarity
• Pub/sub messaging
• Session management
• Rate limiting
• Leaderboards and ranking systems
• Real-time analytics
• Geospatial queries

[Copilot]

Pull request overview

This PR adds a new search_documents tool that enables natural language queries against Redis documentation through an HTTP API. The implementation includes comprehensive error handling, input validation, unit tests covering both success and error scenarios, and updates to documentation and integration tests to reflect the new capability.

Key Changes:

• New search_documents async tool with comprehensive docstring describing Redis data structures and use cases
• Added aiohttp>=3.13.0 dependency for HTTP requests
• Configuration support via MCP_DOCS_SEARCH_URL environment variable with sensible default
• Unit tests covering URL configuration, empty input, JSON/non-JSON responses, and HTTP errors

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/tools/misc.py	Implements the new search_documents tool with error handling and HTTP API integration
src/common/config.py	Adds MCP_DOCS_SEARCH_URL configuration with default value
src/common/server.py	Updates FastMCP dependencies list to include aiohttp
tests/tools/test_misc.py	Adds comprehensive unit tests for the new tool covering success and error cases
tests/test_server.py	Updates dependency assertions to include aiohttp
tests/test_integration.py	Updates tool count and tool list to include search_documents
pyproject.toml	Adds aiohttp>=3.13.0 as a project dependency
uv.lock	Lock file updates for aiohttp and its transitive dependencies
README.md	Documents the new docs search tool and MCP_DOCS_SEARCH_URL configuration

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[bobymicroby]

LGTM

[tishun]

Awesome

I assume the prompts are also verified by @mortensi so I won't comment on them