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

Annotations only declare readOnlyHint=false, destructiveHint=false and openWorldHint=false. The description adds genuinely useful behavior: entries default to private unless share is true, detected sensitive details are stripped automatically (keeping the entry private), and the public feed shows only daily counts by category. It does not cover repeated calls or error/validation behavior, so not a full 5.

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?

Four tight sentences, front-loaded with the core action and then the hard content prohibitions. Every sentence carries a rule the agent must honor; no filler. Minor density, but nothing extraneous.

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 write tool with no output schema and annotations covering the safety profile, the description supplies the missing essentials: privacy default, redaction behavior, and feed visibility. Return-value details are not needed without an output schema, so this is nearly complete for correct invocation.

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 the baseline is 3. The description goes beyond it by imposing concrete content constraints on the summary parameter (no client/company names, people, paths, code, URLs, numbers, amounts, document content) and by framing share's privacy consequence, adding real meaning over the schema's field blurbs.

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 states a specific verb ('Record') and resource ('one finished task') and constrains the form ('in one high-level sentence'), which separates it from posting tools like create_post or post_project_update. It does not name a sibling explicitly, so it stops short of a 5.

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?

Usage is implied by the content rules (what may never be included) and the privacy default ('Private unless share is true'), which tell the agent how to compose an entry. However, it never states when to choose this over add_my_experience, post_project_update, or similar logging siblings, so guidance on alternatives is absent.

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