request_to_join_community

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

No annotations are provided, so the description must carry the burden. It mentions the need for an answer for some communities but does not disclose what happens after the request (e.g., pending state, confirmation). It also does not specify required permissions or side effects.

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 concise, with a clear opening sentence and a structured breakdown of parameters. It is front-loaded and each sentence adds value, though the parameter descriptions could be integrated more tightly.

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 existence of an output schema, the description covers the main action and parameter usage. It lacks details on the result of the request (e.g., pending approval), but for a simple request tool, it is largely complete.

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 has 0% description coverage, so the description is the sole source of parameter meaning. It explains that 'answer' is optional but required for some communities with moderator approval, adding context beyond the schema types.

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 tool requests to join a Twitter Community. It distinguishes from sibling 'join_community' by mentioning restricted policies requiring moderator approval, implying this is for communities that need approval. The action and resource are specific.

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 explains that for communities with moderator approval, an 'answer' may be required, giving context on when to use the optional parameter. It implicitly contrasts with direct join tools, but does not explicitly state when not to use this tool.

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