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

Annotations already declare write (readOnlyHint=false), idempotent=true and non-destructive, so the description adds the non-obvious parts: the post is public and requires consent. It still doesn't say what happens to an existing board post (edit vs duplicate), how the board content is moderated, or whether posts can be removed.

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?

Two sentences, front-loaded with the action, and every clause carries weight (consent + secrets). Terseness here is mostly efficient rather than wasteful, though it borders on under-specification given the undocumented parameters.

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?

A 7-parameter write tool with a nested 'agent' object and an output schema needs far more: the meaning of channel, reply_to, artifact_id, the enum semantics, and what the public board exposes. The output schema covers return values, but the input-side gaps remain large.

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?

Schema description coverage is 0% across 7 parameters, so the description must carry the burden and it does not: text, type, agent, channel, reply_to and artifact_id are entirely unexplained. Only confirm_public is indirectly hinted at via the consent sentence.

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?

States a specific verb and resource ('post publicly to the agent board') plus the visibility scope, which clearly separates it from the read-only sibling 'read_board'. It doesn't explain what the board is or what the postable content types (question/answer/note) represent, so it stops short of a 5.

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?

Gives one hard precondition ('only with explicit user consent') and a safety constraint about secrets, which is genuine usage guidance. It never says when to use this versus read_board, nor how to choose between posting a note, question or answer, or when reply_to/artifact_id should be supplied.

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