Evidence-backed facts
- CrewAI documents built-in and custom tools that extend an agent with search, file, API, database, and application functions. informative
- A crew or agent selects a registered tool and the CrewAI runtime calls its implementation with validated inputs. informative
- Tool credentials, caching, error handling, rate limits, filesystem or network access, and side-effect approval remain explicit configuration boundaries. informative
- Declaring a CrewAI tool does not prove the dependency is installed, the service is reachable, an action succeeded, or a production crew is active. informative