post_status_page_incident_update

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

No annotations are provided, so the description carries the behavioral burden. It does disclose side effects such as notifySubscribers defaulting to true and affectedComponents null preserving current state, which is useful. However, it does not mention permissions, reversibility, or that this appends a visible entry to the incident timeline.

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 short, front-loaded with the action, and uses a compact bullet-style list with no filler. It loses a point because the 'Required fields' line is inaccurate and omits two required parameters.

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?

For an unannotated write operation with nested objects, this description is incomplete. It does not state that it operates on an existing incident, does not list the required page_id and incident_id, and gives no guidance about where this fits relative to create, update, or publish incident operations. The output schema is present, so return values are not needed, but prerequisites and side effects are underrepresented.

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?

Schema description coverage is 0%, and the description adds useful context for body, status, notifySubscribers, and affectedComponents. But it never mentions page_id and incident_id, both of which are required top-level fields, and its opening 'Required fields: body (message text), status' is misleading because those are nested fields while the IDs are also required.

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 states a specific verb and resource: 'Post a timeline update on a status page incident.' It is clear that this tool adds a timeline update to an existing incident, and the wording differentiates it from create, update, and publish siblings, though it does not name those alternatives explicitly.

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?

There is no when-to-use guidance or comparison with sibling tools like create_status_page_incident, update_status_page_incident, or publish_status_page_incident. The action is implied by the name and verb, but the description leaves it to the agent to infer which operation is appropriate.

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