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

The annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is known. The description adds only the HTTP method and path, with no additional behavioral context such as behavior for nonexistent IDs, permission requirements beyond the schema note, or response characteristics. It provides no extra transparency beyond the annotations.

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 extremely compact and contains no filler or repetition. It conveys the endpoint and method efficiently. However, it is so terse that it relies on the tool name for meaning, preventing a perfect 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?

An output schema exists, so return values do not need to be explained. Still, the description lacks plain-language purpose, usage context, and sibling differentiation, which are important for an agent selecting among many similar tools. The annotations cover safety, but the overall description is not complete enough for confident invocation.

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 schema describes workspaceId with permission context, and the route template makes clear that path.id is the channel identifier. The description itself only contributes the '{id}' placeholder meaning, while workspaceId semantics come from the schema. This partially compensates for the 50% schema description coverage.

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 the HTTP verb and resource path: 'GET /v1/channels/{id}'. This clearly identifies the operation as retrieving a single channel by ID, and the '{id}' path element distinguishes it from the sibling list tool get_channels. However, it relies on the path/name rather than a plain-language statement of the outcome.

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 guidance about when to use this tool versus get_channels or other siblings. The description provides no context, exclusions, or alternative recommendations. An agent must infer from the tool name and path that this is for fetching a specific channel rather than listing channels.

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