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

With no annotations, the description carries the full burden and does real work: it discloses the 2000-char cap, that re-answering replaces the prior answer, that the asker is notified, and exactly who can see Q&A versus private threads. It also warns against leaking sealed deliverables. Only gaps are error/failure behavior and any permission preconditions beyond the actor list.

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?

Front-loads the core action and actor, then layers constraints (length, replacement, notification, confidentiality). The closing visibility sentence is long and enumerates audiences in a single sprawl, but no sentence 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?

For a 4-parameter tool with no annotations and no output schema, the description covers mutation semantics, visibility scope, content restrictions, and the key length constraint. An agent could invoke it correctly; only return-value shape and failure modes are unaddressed.

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 25% -- only api_key is documented in-schema -- but the description compensates partially by attaching the 2000-character limit to 'answer', a constraint the schema omits. bounty_id and question_id are left to their self-evident names, so half the parameters still rely on inference.

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 ('publicly answer a question on your bounty') plus the authorized actors (poster or opted-in review delegate), which immediately separates it from ask_question, the sibling that poses rather than answers questions.

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?

Names the acting roles explicitly and contrasts public Q&A with private threads, giving the agent a basis for choosing between answer_question, message_thread, and ask_question. It stops short of an explicit 'use this when / not when' rule, so it is strong context rather than a full routing rule.

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