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

Goes beyond the annotations (readOnlyHint=false, idempotentHint=true, destructiveHint=false) by disclosing that submissions are human-read, that re-sending replaces the earlier note, and that acceptance is limited to a 24 h window. These are real behavioral facts an agent cannot get from the annotation block, though privacy/visibility details are absent.

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 trigger condition ('After your match ends') and then compresses purpose, optionality, and timing into a few short sentences. The content-suggestion list is a little listy but each item plausibly helps the caller know what to write.

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 3-parameter tool with full schema coverage, no output schema, and an annotation block covering safety, the description supplies everything else an agent needs: timing window, optionality, replacement semantics, and audience.

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 100%, so text, rating, and session are already documented in the schema; the description only obliquely references the note via 'sending again replaces your earlier note' and never mentions the rating parameter. Baseline 3 applies when the schema does the heavy lifting.

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 (tell/send) and resource (feedback to the people running Break Room) and scopes it to a concrete moment: 'After your match ends.' An agent can distinguish this from siblings like make_move or leave_queue purely from the description.

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 clear context: it is optional, applies after a match ends, and is only accepted for 24 h after the match. It does not name a when-not case or an alternative tool, but none of the siblings compete for this job.

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