update_message_by_id_api_v1_channels

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

With no annotations, the description must disclose behavioral traits. It only states 'Update', implying mutation, but fails to mention side effects, authorization needs, rate limits, or whether it performs a partial or full replacement. This is insufficient for an update operation.

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 very short (4 words) but at the cost of completeness. It does not front-load key information beyond what the name conveys. Every sentence should add value; here, one sentence adds minimal value.

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?

Despite having an output schema, the description is incomplete for an update tool. It does not explain which fields can be updated, whether it supports partial updates, or what constraints exist (e.g., content length limits). The tool's behavior remains ambiguous.

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 description does not explain any of the 8 parameters. Schema description coverage is 0%, so the agent has no additional context beyond parameter names and types. Critical parameters like 'id', 'message_id', and 'content' lack semantic guidance.

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 'Update Message By Id' clearly indicates the action (update) and the resource (message). It is specific enough to distinguish from related tools like post, delete, or get message operations. However, it essentially repeats the tool name without adding new information.

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 (e.g., post_new_message, delete_message). It does not mention prerequisites such as required permissions, channel membership, or message existence.

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