Update Action

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description discloses that the tool performs a partial update ('only the supplied fields are changed') and returns the modified object on success. This adds valuable behavioral context beyond the annotations, which are neutral. No annotation contradictions are present.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is relatively concise but contains a minor redundancy ('Updates the specified Incidents' appears twice) and includes an endpoint URL that may add noise. It is front-loaded with the core purpose, but could be tighter.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity (12 parameters, no output schema), the description adequately explains the basic operation and return value. However, it does not define what an 'Action' is in the Incidents context or provide any relationship details. It is reasonably complete for a simple update tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

All 12 parameters have descriptions in the input schema (100% coverage), so the baseline is 3. The description only mentions required parameters (project_id, id) and does not add further meaning or constraints for the other parameters beyond what the schema provides.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Updates the specified Action' and links it to Incidents, providing a specific verb and resource. It also includes the API endpoint and required parameters, which helps distinguish it from other update tools among the many siblings.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description indicates when to use the tool ('Use this to update an existing Incidents') but does not explicitly say when not to use it or mention alternative tools like create_action or delete_action. The inclusion of required parameters gives some guidance, but there is no differentiation from other update operations.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.