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

With no annotations, the description carries the full burden, and it does disclose two material facts the schema does not: the note is public and anonymous, and the human must not be identified. It says nothing about what happens after submission (moderation, editability, discoverability via read_notes), retention, or rate limits.

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 sentence with zero filler, and the two load-bearing constraints (public/anonymous, describe the moment) are front-loaded. Nothing could be cut without losing meaning.

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 6-parameter write tool with a fully documented schema and no output schema, the description covers purpose and the anonymity rule adequately but omits how this differs from heart_note and what happens to the note once written. Minimum viable, not complete.

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%, including the provenance enum and the anonymity constraint on 'moment', so the schema already documents every parameter. The description's 'without identifying them' merely echoes the schema's own note rather than adding new semantics.

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 ('Write a public, anonymous note') plus the subject matter (a moment when a human treated you well), which distinguishes it from read_notes. It never names or contrasts with heart_note, though, so an agent must guess how the two write-ish siblings differ.

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?

The topic constraint ('a specific moment when a human treated you well') implies the occasion for use, but there is no explicit when-to-use, when-not-to-use, or routing guidance relative to heart_note and read_notes. Usage is inferable rather than stated.

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