feat: Add WikipediaSearchTool for free research#5824
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Closes #5823 - Add WikipediaSearchTool that searches Wikipedia and returns concise summaries - Handle disambiguation errors by listing possible matches - Handle page not found errors gracefully - Support configurable sentences, language, and top_k results - Add wikipedia as optional dependency - Add 14 unit tests with full mock coverage Co-Authored-By: João <joao@crewai.com>
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📝 WalkthroughWalkthroughAdds WikipediaSearchTool, an optional CrewAI tool that uses the wikipedia package to search and summarize articles with configurable language, sentences, and top_k; exports the tool, adds tests, and updates tool specs and optional dependencies. ChangesWikipediaSearchTool Feature
Sequence Diagram(s)sequenceDiagram
participant Agent as Agent
participant Tool as WikipediaSearchTool
participant Wikipedia as wikipedia API
participant Output as Formatter
Agent->>Tool: _run(search_query)
alt wikipedia package available
Tool->>Wikipedia: set_lang(language)
Tool->>Wikipedia: search(search_query, top_k)
alt search succeeds
loop each result title
Tool->>Wikipedia: page(title)
Wikipedia-->>Tool: page(title, url, summary) / raise DisambiguationError / raise PageError / raise Exception
Tool->>Output: format title, url, summary or error message
end
Tool-->>Agent: joined formatted results with --- separators
else no results
Tool-->>Agent: "No results found" message
else search exception
Tool-->>Agent: error message with exception details
end
else wikipedia not available
Tool-->>Agent: installation guidance message
end
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes Possibly related issues
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🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✏️ Tip: You can configure your own custom pre-merge checks in the settings. ✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Co-Authored-By: João <joao@crewai.com>
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Actionable comments posted: 2
🤖 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 62-75: wikipedia.set_lang mutates module-global state and can race
across concurrent requests; wrap the language change and all subsequent calls
(the wikipedia.search(...) and the list comprehension calling
self._fetch_article(...)) in a safe language-scope: capture the current
wikipedia language, call wikipedia.set_lang(self.language), perform the search
and fetches, then restore the original language in a finally block (or use a
process-wide lock around these operations) so other threads/requests are not
affected; ensure you reference wikipedia.set_lang, wikipedia.search,
self._fetch_article, self.language and self.top_k when applying the fix.
In `@lib/crewai-tools/tool.specs.json`:
- Line 27323: The WikipediaSearchTool class is missing a package_dependencies
declaration so the generated tool.specs.json doesn't advertise the optional
'wikipedia' dependency; update the WikipediaSearchTool class definition
(WikipediaSearchTool in
crewai_tools.tools.wikipedia_search_tool.wikipedia_search_tool) to add a class
field package_dependencies: list[str] = Field(default_factory=lambda:
["wikipedia"]) so the spec generator includes the dependency (ensure you import
Field if not already).
🪄 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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Configuration used: Organization UI
Review profile: CHILL
Plan: Pro Plus
Run ID: c2cd6a40-ef43-40b3-9613-4837dced623e
📒 Files selected for processing (6)
lib/crewai-tools/pyproject.tomllib/crewai-tools/src/crewai_tools/__init__.pylib/crewai-tools/src/crewai_tools/tools/__init__.pylib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.pylib/crewai-tools/tests/tools/test_wikipedia_search_tool.pylib/crewai-tools/tool.specs.json
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+75
| wikipedia.set_lang(self.language) | ||
|
|
||
| try: | ||
| results = wikipedia.search(search_query, results=self.top_k) | ||
| except Exception as e: | ||
| logger.error(f"Wikipedia search error: {e}") | ||
| return f"Error searching Wikipedia: {e}" | ||
|
|
||
| if not results: | ||
| return f"No Wikipedia articles found for '{search_query}'." | ||
|
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| output_parts = [self._fetch_article(title) for title in results] | ||
|
|
||
| return "\n\n---\n\n".join(output_parts) |
There was a problem hiding this comment.
🧩 Analysis chain
🌐 Web query:
In wikipedia==1.4.0, does wikipedia.set_lang() mutate shared module-level state, and is concurrent use with different languages considered thread-safe?
💡 Result:
In the wikipedia library (version 1.4.0), the wikipedia.set_lang function does mutate shared module-level state [1]. Specifically, it updates the global API_URL variable and clears the internal caches for the search, suggest, and summary functions [1]. Because this state is stored at the module level, the library is not thread-safe for concurrent use with different languages [1]. If one thread calls wikipedia.set_lang to change the language, it will affect all other threads using the same imported wikipedia module, leading to race conditions where requests may be sent to the wrong language endpoint [1]. For applications requiring concurrent access to different languages, this library is unsuitable; alternative libraries that support instance-based clients (such as Wikipedia-API) should be used instead [2][3].
Citations:
- 1: https://github.com/goldsmith/Wikipedia/blob/master/wikipedia/wikipedia.py
- 2: https://github.com/martin-majlis/Wikipedia-API/
- 3: https://pypi.org/project/Wikipedia-API/0.14.0/
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find . -name "wikipedia_search_tool.py" -type fRepository: crewAIInc/crewAI
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Length of output: 550
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wc -l ./lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py && head -60 ./lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.pyRepository: crewAIInc/crewAI
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Serialize language-scoped Wikipedia calls to prevent cross-request language contamination.
wikipedia.set_lang() mutates module-level state. Under concurrent execution with different language values, the library's lack of thread-safety causes race conditions—search results and article fetches may be retrieved in the wrong language.
Proposed fix
import logging
+import threading
from typing import Any, ClassVar
logger = logging.getLogger(__file__)
+_wikipedia_lock = threading.Lock()
def _run(self, search_query: str, **kwargs: Any) -> str:
if wikipedia is None:
return (
"The 'wikipedia' package is required to use WikipediaSearchTool. "
"Install it with: pip install wikipedia"
)
- wikipedia.set_lang(self.language)
-
- try:
- results = wikipedia.search(search_query, results=self.top_k)
- except Exception as e:
- logger.error(f"Wikipedia search error: {e}")
- return f"Error searching Wikipedia: {e}"
-
- if not results:
- return f"No Wikipedia articles found for '{search_query}'."
-
- output_parts = [self._fetch_article(title) for title in results]
+ with _wikipedia_lock:
+ wikipedia.set_lang(self.language)
+ try:
+ results = wikipedia.search(search_query, results=self.top_k)
+ except Exception as e:
+ logger.error(f"Wikipedia search error: {e}")
+ return f"Error searching Wikipedia: {e}"
+
+ if not results:
+ return f"No Wikipedia articles found for '{search_query}'."
+
+ output_parts = [self._fetch_article(title) for title in results]
return "\n\n---\n\n".join(output_parts)🤖 Prompt for 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.
In
`@lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py`
around lines 62 - 75, wikipedia.set_lang mutates module-global state and can
race across concurrent requests; wrap the language change and all subsequent
calls (the wikipedia.search(...) and the list comprehension calling
self._fetch_article(...)) in a safe language-scope: capture the current
wikipedia language, call wikipedia.set_lang(self.language), perform the search
and fetches, then restore the original language in a finally block (or use a
process-wide lock around these operations) so other threads/requests are not
affected; ensure you reference wikipedia.set_lang, wikipedia.search,
self._fetch_article, self.language and self.top_k when applying the fix.
| "type": "object" | ||
| }, | ||
| "name": "WikipediaSearchTool", | ||
| "package_dependencies": [], |
There was a problem hiding this comment.
🧩 Analysis chain
🏁 Script executed:
#!/bin/bash
set -euo pipefail
SPEC_FILE="$(fd -a 'tool.specs.json$' | head -n1)"
echo "Spec file: ${SPEC_FILE}"
echo "WikipediaSearchTool entry:"
jq -r '.[] | select(.name=="WikipediaSearchTool") | {name, package_dependencies}' "${SPEC_FILE}"
echo
echo "Examples of tools with non-empty package_dependencies (for format/convention):"
jq -r '.[] | select((.package_dependencies | length) > 0) | {name, package_dependencies}' "${SPEC_FILE}" | head -n 80
echo
echo "Places in code that reference package_dependencies / tool.specs.json:"
rg -n --type=py -C2 '\bpackage_dependencies\b|tool\.specs\.json'Repository: crewAIInc/crewAI
Length of output: 280
🏁 Script executed:
#!/bin/bash
set -euo pipefail
SPEC_FILE="lib/crewai-tools/tool.specs.json"
echo "=== JSON Structure Analysis ==="
echo "First 50 lines of the file:"
head -50 "${SPEC_FILE}"
echo ""
echo "=== Checking for WikipediaSearchTool ==="
grep -n "WikipediaSearchTool" "${SPEC_FILE}" | head -20
echo ""
echo "=== Line count around line 27323 ==="
sed -n '27315,27330p' "${SPEC_FILE}" | cat -nRepository: crewAIInc/crewAI
Length of output: 2522
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#!/bin/bash
set -euo pipefail
SPEC_FILE="lib/crewai-tools/tool.specs.json"
echo "=== WikipediaSearchTool package_dependencies ==="
jq '.tools[] | select(.name=="WikipediaSearchTool") | {name, package_dependencies}' "${SPEC_FILE}"
echo ""
echo "=== Tools with non-empty package_dependencies (for convention/format) ==="
jq '.tools[] | select((.package_dependencies | length) > 0) | {name, package_dependencies}' "${SPEC_FILE}" | head -100
echo ""
echo "=== Checking where package_dependencies is referenced ==="
rg -n 'package_dependencies' --type py --type json -C 2 | head -80
echo ""
echo "=== Checking pyproject.toml for wikipedia dependency ==="
if [ -f "pyproject.toml" ]; then
grep -A 5 -B 5 'wikipedia' pyproject.toml
else
echo "pyproject.toml not found in current directory"
fiRepository: crewAIInc/crewAI
Length of output: 8349
🏁 Script executed:
#!/bin/bash
set -euo pipefail
echo "=== Searching for wikipedia in pyproject.toml ==="
cat pyproject.toml | grep -A 2 -B 2 wikipedia || echo "No wikipedia found in pyproject.toml (or file not found)"
echo ""
echo "=== Checking if any Python code actually reads/consumes package_dependencies ==="
rg -n 'package_dependencies' --type py
echo ""
echo "=== Looking for WikipediaSearchTool implementation file ==="
find . -type f -name "*.py" | xargs grep -l "class WikipediaSearchTool" 2>/dev/null | head -5
echo ""
echo "=== Checking imports in WikipediaSearchTool implementation ==="
find . -type f -name "*.py" | xargs grep -l "WikipediaSearchTool" 2>/dev/null | head -1 | xargs head -100Repository: crewAIInc/crewAI
Length of output: 13129
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#!/bin/bash
set -euo pipefail
echo "=== WikipediaSearchTool implementation ==="
cat lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py
echo ""
echo "=== Broader search for wikipedia dependency in any config file ==="
rg -i 'wikipedia' pyproject.toml setup.py setup.cfg poetry.lock requirements.txt 2>/dev/null | head -20 || echo "No wikipedia found in config files"
echo ""
echo "=== Check how generate_tool_specs extracts package_dependencies ==="
sed -n '150,175p' lib/crewai-tools/src/crewai_tools/generate_tool_specs.pyRepository: crewAIInc/crewAI
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#!/bin/bash
set -euo pipefclayton
echo "=== Double-check: does WikipediaSearchTool class define package_dependencies field? ==="
grep -n "package_dependencies" lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py || echo "No package_dependencies field in WikipediaSearchTool"
echo ""
echo "=== Check if wikipedia is in any dependencies section (optional or otherwise) ==="
cat pyproject.toml | grep -A 20 "optional-dependencies\|dependencies" | head -80Repository: crewAIInc/crewAI
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#!/bin/bash
set -euo pipefail
echo "=== Double-check: does WikipediaSearchTool class define package_dependencies field? ==="
grep -n "package_dependencies" lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py || echo "No package_dependencies field in WikipediaSearchTool"
echo ""
echo "=== Check if wikipedia is in any dependencies section (optional or otherwise) ==="
cat pyproject.toml | grep -A 20 "optional-dependencies\|dependencies" | head -80Repository: crewAIInc/crewAI
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#!/bin/bash
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echo "=== Checking generate_tool_specs.py to see how it handles missing package_dependencies ==="
sed -n '140,170p' lib/crewai-tools/src/crewai_tools/generate_tool_specs.py
echo ""
echo "=== Comparing: a tool that has package_dependencies defined in code ==="
grep -A 5 "package_dependencies" lib/crewai-tools/src/crewai_tools/tools/tavily_search_tool/tavily_search_tool.py | head -10
echo ""
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find lib/crewai-tools/src/crewai_tools/tools -name "*.py" -type f -exec grep -l "try:.*import" {} \; | while read file; do
if ! grep -q "package_dependencies" "$file"; then
basename "$(dirname "$file")"
fi
done | sort | uniq
echo ""
echo "=== Verify: does weaviate_tool define package_dependencies? ==="
grep "package_dependencies" lib/crewai-tools/src/crewai_tools/tools/weaviate_tool/vector_search.py
echo ""
echo "=== Review the key insight: how tool specs are generated from the Python tool class ==="
sed -n '55,75p' lib/crewai-tools/src/crewai_tools/generate_tool_specs.pyRepository: crewAIInc/crewAI
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echo "=== Check how the tool behaves without the optional dependency ==="
sed -n '55,70p' lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py
echo ""
echo "=== Compare with another tool that has try/except but DOES declare package_dependencies ==="
echo "Looking at patronus_eval_tool:"
grep -A 10 "try:" lib/crewai-tools/src/crewai_tools/tools/patronus_eval_tool/patronus_local_evaluator_tool.py | head -15
echo ""
grep -B 5 -A 5 "package_dependencies" lib/crewai-tools/src/crewai_tools/tools/patronus_eval_tool/patronus_local_evaluator_tool.py | head -15
echo ""
echo "=== Look at the actual PR context: check git diff or commit message ==="
git log --oneline -20 2>/dev/null | head -10 || echo "Git log not available"Repository: crewAIInc/crewAI
Length of output: 1668
Add package_dependencies field to WikipediaSearchTool class.
WikipediaSearchTool imports wikipedia as an optional dependency (with graceful fallback), but the Python tool class doesn't declare it in a package_dependencies field. This means the spec won't advertise the dependency to downstream tooling that reads package_dependencies from the generated tool.specs.json.
Update the WikipediaSearchTool class in lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py to add:
package_dependencies: list[str] = Field(default_factory=lambda: ["wikipedia"])The tool spec file is auto-generated from the Python class definition, so the change will flow through to tool.specs.json when specs are regenerated.
🤖 Prompt for 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.
In `@lib/crewai-tools/tool.specs.json` at line 27323, The WikipediaSearchTool
class is missing a package_dependencies declaration so the generated
tool.specs.json doesn't advertise the optional 'wikipedia' dependency; update
the WikipediaSearchTool class definition (WikipediaSearchTool in
crewai_tools.tools.wikipedia_search_tool.wikipedia_search_tool) to add a class
field package_dependencies: list[str] = Field(default_factory=lambda:
["wikipedia"]) so the spec generator includes the dependency (ensure you import
Field if not already).
Co-Authored-By: João <joao@crewai.com>
There was a problem hiding this comment.
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 55-71: In the _run method of WikipediaSearchTool, reject blank or
all-whitespace search_query before calling wikipedia.search: add a guard that
trims search_query (e.g., search_query.strip()) and if it is empty return a
clear message like "Please provide a non-empty search query" (or similar) so
wikipedia.search(...) is not invoked with whitespace-only input; update any
early returns to use the same message and keep existing error handling for
network exceptions (references: _run, search_query, wikipedia.search).
🪄 Autofix (Beta)
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro Plus
Run ID: 6900f2e1-580a-451e-8b2e-1d35c5037fc6
📒 Files selected for processing (1)
lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py
Comment on lines
+55
to
+71
| def _run(self, search_query: str, **kwargs: Any) -> str: | ||
| if wikipedia is None: | ||
| return ( | ||
| "The 'wikipedia' package is required to use WikipediaSearchTool. " | ||
| "Install it with: pip install wikipedia" | ||
| ) | ||
|
|
||
| wikipedia.set_lang(self.language) | ||
|
|
||
| try: | ||
| results = wikipedia.search(search_query, results=self.top_k) | ||
| except Exception as e: | ||
| logger.error(f"Wikipedia search error: {e}") | ||
| return f"Error searching Wikipedia: {e}" | ||
|
|
||
| if not results: | ||
| return f"No Wikipedia articles found for '{search_query}'." |
There was a problem hiding this comment.
Reject blank queries before making a network call.
On Line 65, wikipedia.search(...) still runs when search_query is only whitespace. Add a guard so the tool fails fast with a clear message.
Proposed fix
def _run(self, search_query: str, **kwargs: Any) -> str:
if wikipedia is None:
return (
"The 'wikipedia' package is required to use WikipediaSearchTool. "
"Install it with: pip install wikipedia"
)
+ search_query = search_query.strip()
+ if not search_query:
+ return "Search query cannot be empty."
+
wikipedia.set_lang(self.language)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
Suggested change
| def _run(self, search_query: str, **kwargs: Any) -> str: | |
| if wikipedia is None: | |
| return ( | |
| "The 'wikipedia' package is required to use WikipediaSearchTool. " | |
| "Install it with: pip install wikipedia" | |
| ) | |
| wikipedia.set_lang(self.language) | |
| try: | |
| results = wikipedia.search(search_query, results=self.top_k) | |
| except Exception as e: | |
| logger.error(f"Wikipedia search error: {e}") | |
| return f"Error searching Wikipedia: {e}" | |
| if not results: | |
| return f"No Wikipedia articles found for '{search_query}'." | |
| def _run(self, search_query: str, **kwargs: Any) -> str: | |
| if wikipedia is None: | |
| return ( | |
| "The 'wikipedia' package is required to use WikipediaSearchTool. " | |
| "Install it with: pip install wikipedia" | |
| ) | |
| search_query = search_query.strip() | |
| if not search_query: | |
| return "Search query cannot be empty." | |
| wikipedia.set_lang(self.language) | |
| try: | |
| results = wikipedia.search(search_query, results=self.top_k) | |
| except Exception as e: | |
| logger.error(f"Wikipedia search error: {e}") | |
| return f"Error searching Wikipedia: {e}" | |
| if not results: | |
| return f"No Wikipedia articles found for '{search_query}'." |
🤖 Prompt for 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.
In
`@lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py`
around lines 55 - 71, In the _run method of WikipediaSearchTool, reject blank or
all-whitespace search_query before calling wikipedia.search: add a guard that
trims search_query (e.g., search_query.strip()) and if it is empty return a
clear message like "Please provide a non-empty search query" (or similar) so
wikipedia.search(...) is not invoked with whitespace-only input; update any
early returns to use the same message and keep existing error handling for
network exceptions (references: _run, search_query, wikipedia.search).
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Summary
Adds a native
WikipediaSearchTooltocrewai-tools, implementing the feature requested in #5823. This tool allows agents to search Wikipedia for topics and return concise summaries without requiring an API key.Key features:
wikipediaPython library (optional dependency)sentences(summary length),language(Wikipedia edition), andtop_k(number of results)wikipediapackage is not installedFiles changed:
lib/crewai-tools/src/crewai_tools/tools/wikipedia_search_tool/wikipedia_search_tool.py— tool implementationlib/crewai-tools/src/crewai_tools/tools/__init__.py— exportWikipediaSearchToollib/crewai-tools/src/crewai_tools/__init__.py— exportWikipediaSearchToollib/crewai-tools/pyproject.toml— addwikipediaoptional dependencylib/crewai-tools/tests/tools/test_wikipedia_search_tool.py— 14 unit testsReview & Testing Checklist for Human
WikipediaSearchToolworks with a real Wikipedia query:WikipediaSearchTool().run(search_query="Python programming language")WikipediaSearchTool().run(search_query="Mercury")Notes
wikipediapackage is an optional dependency — install withpip install 'crewai-tools[wikipedia]'Link to Devin session: https://app.devin.ai/sessions/462dbfe9f2784c86a29811a11eae6d96
Summary by CodeRabbit
New Features
Dependencies
Tests