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

Adds substantial context beyond the annotations: it explains why readOnlyHint=false (the topic is claimed to you for 24 hours), confirms idempotency in plain language ('asking again returns the same one'), states the auth requirement (Microsoft sign-in, scope blog.write), and notes 'No model is called.' The failure path (status none with a reason, then stop) is also disclosed.

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?

Dense but efficient: authentication, claim behavior, payload, failure mode, and next step all appear in a compact block. The parenthetical and semicolon chaining make it somewhat run-on, but no sentence is filler.

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?

An output schema covers the return values, and the description supplies everything else an agent needs: auth scope, claim/idempotency behavior, the handoff to submit_draft, and what to do when the response is empty.

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?

Zero parameters, so the baseline is 4; the description correctly introduces no parameter expectations and instead points at the returned brief_id that feeds submit_draft.

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 resource and payload: today's topic for a daily post, comprising topic, angle, target search, sources, internal links, and brief_id. It is clearly distinguishable from get_brief_pool (pool of candidates) and propose_brief, and the 24-hour claim semantics are stated up front.

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 explicit routing: pass brief_id to submit_draft, and 'stop there' when status is none. It also instructs the agent to ask the engineer for first-hand detail rather than invent it. It doesn't explicitly contrast with get_brief_pool or propose_brief, which is the only gap.

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