update_timeline_event

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

With no annotations provided, the description must disclose behavioral traits. It only states the basic operation without describing side effects (e.g., whether the update is atomic, what fields are allowed to be updated together, or if the tool requires specific permissions). No mention of return value or error conditions.

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 a single sentence, which is concise, but it lacks any structural elements or additional context that could enhance understandability. It is minimal but not overly verbose, earning a middle score.

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 of the nested input schema and the lack of an output schema or annotations, the description is insufficient. It does not explain what the response looks like, what fields cannot be updated, or any dependencies like timeline_id requirement. The description is too brief for a tool that modifies data.

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?

The input schema already contains detailed descriptions for each parameter (e.g., id, icon, name, archived, etc.), so the tool description does not add additional semantic meaning. However, the schema coverage is actually high despite the context signal indicating 0%, so the baseline is appropriate. The description does not elaborate on parameter relationships or constraints beyond the schema.

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 'Update an existing timeline event in Metabase' which indicates the action (update) and the resource (timeline event). It is concise and unambiguous, though it does not explicitly differentiate from sibling tools like create or get, but the verb 'update' inherently distinguishes it.

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 provides no guidance on when to use this tool versus alternatives like create_timeline_event or get_timeline_event. There is no mention of prerequisites, typical use cases, or scenarios where a different sibling tool would be preferred.

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