join_channel

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

With no annotations provided, the description carries full responsibility for behavioral disclosure. It states the tool joins a channel for communication, but does not explain what 'communicate' means (e.g., sending messages, receiving updates) or any side effects. The behavioral impact is unclear.

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, making it concise. However, it is too brief to be informative; it sacrifices substance for brevity. A slightly longer description could provide more value without being verbose.

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 tool has one optional parameter and no output schema, the description is not complete. It fails to explain the consequences of joining a channel, the expected behavior, or how it integrates with other tools. The user cannot fully understand what happens when the tool is used.

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 covers 100% of parameters, so baseline is 3. The description does not add any additional meaning beyond the schema's parameter description. It simply restates that the channel name is provided, offering no extra context or constraints.

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 the verb 'join' and the resource 'channel', matching the tool name. It indicates the purpose of communicating with Figma, which distinguishes it from sibling tools focused on node manipulation. However, 'communicate with Figma' is somewhat vague, leaving room for interpretation about what exactly joining a channel entails.

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?

No guidance is provided on when to use this tool versus alternatives. There is no mention of prerequisites, context, or when not to use it. The description is too brief to help an agent decide between this and other tools.

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