feat(tools): add WikipediaSearchTool

[raghav-404]

Closes #5823

Summary

Adds a new WikipediaSearchTool to crewai-tools for topic-based Wikipedia lookup with concise summaries.

What Changed

• Added WikipediaSearchTool
• Added support for concise Wikipedia summaries
• Added handling for:
  • disambiguation errors
  • missing pages
  • missing optional dependency
• Added tests for success and failure cases
• Exported the tool from package entrypoints
• Added the wikipedia dependency and updated lockfile

Testing

Ran:

• uv run pytest lib/crewai-tools/tests/tools/test_wikipedia_search_tool.py
• uv run ruff check lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool lib/crewai-tools/tests/tools/test_wikipedia_search_tool.py lib/crewai-tools/src/crewai_tools/__init__.py lib/crewai-tools/src/crewai_tools/tools/__init__.py

Notes

The tool uses the wikipedia Python package and handles it as an optional dependency.

Summary by CodeRabbit

• New Features
  • Introduced a Wikipedia search tool: query Wikipedia, control summary length, get suggestion lists for ambiguous terms, clear messages for missing pages, and readable error responses.
• Chores
  • Added an optional wikipedia dependency to enable the feature.
• Tests
  • Added tests covering success, disambiguation, page-not-found, unexpected errors, and missing-dependency behavior.

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a new WikipediaSearchTool that wraps the optional wikipedia package, provides a Pydantic input schema, handles disambiguation/page-not-found/generic errors, declares wikipedia as an optional dependency, wires exports through package init files, and adds tests for all scenarios.

Changes

WikipediaSearchTool Implementation

Layer / File(s)	Summary
Tool implementation with schema and error handling lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py	WikipediaSearchTool extends BaseTool with a Pydantic WikipediaSearchToolSchema input model (query, sentences). _run conditionally requires wikipedia, returns wikipedia.summary, maps DisambiguationError to ambiguity messages with up to 5 options, PageError to "no page found", other exceptions to generic error text, and raises ImportError with install instructions when wikipedia is unavailable.
Optional dependency declaration lib/crewai-tools/pyproject.toml	Added wikipedia>=1.4.0 under [project.optional-dependencies] as the wikipedia group.
Package structure and multi-level exports lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/__init__.py, lib/crewai-tools/src/crewai_tools/tools/__init__.py, lib/crewai-tools/src/crewai_tools/__init__.py	Added re-exports so WikipediaSearchTool is available from the tool package and top-level crewai_tools package.
Comprehensive test coverage lib/crewai-tools/tests/tools/test_wikipedia_search_tool.py	Added tests and fake exception types covering success, disambiguation, page-not-found, unexpected error, and missing-dependency behaviors. Tests patch WIKIPEDIA_AVAILABLE and the wikipedia module to simulate scenarios.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related issues

• [FEATURE] Add native WikipediaSearchTool for free research #5823: The implementation adds a native WikipediaSearchTool with optional dependency, matching the requested class name, input schema, and error handling behavior.

Poem

🐰 I hop through pages, line by line,
Summoning summaries, crisp and fine,
If pages split or nothing's found,
I gently say what I've found around,
Install me optional, and I'll fetch the sign.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'feat(tools): add WikipediaSearchTool' directly and accurately describes the main change—introducing a new tool called WikipediaSearchTool to the tools package.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In
`@lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py`:
- Around line 20-22: The Field for "sentences" currently allows zero or negative
values; update the schema on the model that defines sentences (the sentences:
int = Field(...)) to enforce a lower bound (e.g., set ge=1 or add a Pydantic
validator on the same model/class) so inputs <1 are rejected at validation time;
locate the sentences Field in the wikipedia_search_tool model and add the
appropriate constraint (ge=1) or a validator to raise a ValidationError for
values <1.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: fabdd6d5-0006-4376-b93c-7a33616bdf94

📥 Commits

Reviewing files that changed from the base of the PR and between a95d267 and 4db90e5.

⛔ Files ignored due to path filters (1)

• uv.lock is excluded by !**/*.lock

📒 Files selected for processing (6)

• lib/crewai-tools/pyproject.toml
• lib/crewai-tools/src/crewai_tools/__init__.py
• lib/crewai-tools/src/crewai_tools/tools/__init__.py
• lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/__init__.py
• lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py
• lib/crewai-tools/tests/tools/test_wikipedia_search_tool.py