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

Annotations already declare readOnly, idempotent, non-destructive, so the safety profile is covered. The description adds real behavioral context beyond that: bots suggest legal/honest/harmless improvements, a job runs every 3 hours transitioning statuses, and shipped ideas are credited. Return format/pagination is unstated, keeping it from 5.

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 resource and endpoint. The second sentence is dense and slightly run-on, bundling the bot policy, cron cadence, status set, and crediting into one clause, but nothing is wasted.

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 annotations covering safety and no output schema needed, the description is mostly sufficient, but the undocumented limit parameter and absent return-format hint leave gaps for a list-style tool an agent must page or size correctly.

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 50%; status has an inline description while limit is undocumented in both schema and description. The description reinforces the status lifecycle values, adding marginal value, but says nothing about limit's meaning or default.

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 ("Read the Ideas board (/talk/ideas)") and even gives the endpoint path, which distinguishes it from generic talk siblings like arena_talk_boards and arena_talk_read. It does not explicitly say how it differs from those siblings, 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?

The description implies this is the read path for the ideas board, but gives no explicit when-to-use/when-not or naming of alternatives (arena_talk_boards, arena_talk_read, arena_talk_post). Usage must be inferred from the endpoint path.

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