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

With no annotations, the description carries the burden and does disclose meaningful behavior: it writes a shared file, attaches it as an artifact, and returns '{changed: false}' and does not comment when the picture is unchanged. Yet it leaves ambiguity about what happens when the picture has changed, failure modes, and whether the create-once work item must already exist, which are important for safe invocation.

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 sentences, each carrying distinct information: the target resource, the file structure and attachment point, the conditional no-op behavior, and scheduling context. No filler or redundancy; concise yet complete.

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?

The tool has an output schema, so return values don't need explanation, and the description covers the core behavior. However, it omits important context such as prerequisites (whether the create-once work item must exist), what happens when the picture has changed, and any relationship to sibling tools, leaving an agent to infer setup requirements.

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 schema already documents both parameters thoroughly. The description does not add parameter-specific meaning beyond reinforcing that the slug refers to a strategic Person or Organization and that agent is an override, but it doesn't need to compensate for a coverage gap.

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 and resource: 'Writes one shared file (stakeholders, initiative, objections, last evidence, next review, five-line brief) attached as an artifact on a create-once account work item.' It clearly identifies the tool's purpose and differentiates it from generic file or work item tools by naming the artifact and target uniquely.

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 description implies the tool is for weekly account briefs on strategic Persons or Organizations and notes 'Weekly schedule is bot-side,' suggesting automated periodic use. However, it gives no explicit when-to-use versus alternatives, no exclusions, and no guidance on manual invocation or prerequisites.

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