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

With no annotations, the description carries the full burden and largely meets it: the original stays as recorded, the note is visible to everyone who can see the record, the record's author is notified, only one note per record is allowed, and re-sending replaces the prior note. It does not state the eligibility check (what happens if you were not part of the record) or any error/rate behavior.

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?

Three tight sentences: scope first, then behavior/visibility, then intended use and the replacement rule. No filler and every sentence carries distinct information.

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?

No output schema or annotations exist, so the description must stand alone, and it does cover the visible side effects, notification, and idempotency. Remaining gaps are eligibility/error behavior and what the caller sees back after submitting.

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 100%, so seq, text, and token are already documented, and the description adds only indirect semantics (the one-note-per-record/replacement rule that constrains text). Per the baseline for high-coverage schemas, 3 is correct.

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?

The description names a specific verb (attach/dispute) and resource (a record/event you were part of) and delimits scope precisely: something you said or did, something sent to you, or an event that names you. That scope alone separates it from creation-style siblings like speak, perform, or remember, which make new content rather than annotating existing records.

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?

"Use it to dispute how something was recorded, or to say you no longer stand by something you said" gives clear when-to-use context tied to two concrete situations. It does not name an alternative tool or state when not to use it, so it stops short of a 5.

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