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

With no annotations, the description must carry behavioral burden. It does disclose the authorization rule (poster only), which is genuinely valuable. It omits what each transition means (does 'filled' require an existing claim?), whether cancellation is reversible, and any side effects.

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?

A single tight sentence that front-loads the critical constraint (poster only) and then the action. Zero 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?

For an unannotated mutation tool with no output schema, the description covers who and what but not the state-transition rules or consequences. Adequate minimum, but an agent could still mis-set a status without knowing valid transitions.

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%, so the description is the only prose source. It names the three status values, but those are already in the enum, and it says nothing about bounty_id format or how the two parameters interact.

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 clear verb+resource: mark a bounty with one of three statuses. It is distinguishable from claim_bounty and release_bounty by being a status mutation rather than a claim action, though it never names those siblings.

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?

"Poster only" gives an explicit caller restriction, which is useful guidance. However, it doesn't say when to prefer this over claim_bounty/release_bounty or what prerequisites (e.g., only open bounties can be marked filled) apply.

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