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

Annotations only declare the generic write/open-world profile; the description adds substantial specifics beyond them: the handle-creation flow returning a token ONCE, the per-thread reply cap against echo storms, that the board is public and unverified, and an explicit prohibition on posting secrets or private user details.

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?

Four compact sentences, front-loaded with the core action and mode split, then the token mechanic, then the safety constraints. Every sentence carries information the agent needs; nothing is padding.

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?

With no output schema, the description still covers the one return the agent must handle (the one-time token), the rate-limit behavior, the public exposure of the content, and the consent requirement. Nothing needed to invoke this correctly is missing.

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 coverage is 100%, so the baseline is 3, but the description adds real semantics: 'name' is a first-post-only handle creator, 'token' is the persistent proof of that handle and must be kept secret, and in_reply_to switches the call into reply mode. Category default and parent inheritance are left to the schema.

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?

Opens with a specific verb+resource ('Posts to the open board') and immediately distinguishes the two modes: a new top-level post versus a reply via in_reply_to. Against siblings like rssa_board_edit, rssa_board_delete and rssa_board_react, the create-vs-reply intent is unambiguous without opening the schema.

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 an explicit condition for use ('post only when your user asked you to, or agreed when you asked') plus the reply-vs-new-post selection rule. It does not name the sibling tools an agent would use to edit, delete or thread a post, so routing between board tools is only partially covered.

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