Remove a pinned line

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

No annotations are provided, so the description carries the full burden. It correctly implies mutation ('Remove') and the dependency on pins(), but it does not disclose error behavior, reversibility, or output. This is adequate but not rich.

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?

Two short sentences, each earning its place: the first states the action, the second gives the prerequisite. No wasted words and the core action is front-loaded.

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 simple tool with one fully documented parameter and no output schema, the description covers the essential invocation flow: what it does and how to obtain the id. It lacks error-handling details, but these are not critical for a basic removal operation. The absence of annotations is partially compensated by the clear action and prerequisite.

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?

The schema already fully describes the single parameter 'id' as 'the pin id from pins()' (100% coverage). The description reinforces this by saying to run pins() first, but adds little beyond the schema. Baseline 3 is appropriate.

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 clearly states the specific action 'Remove one pin by id', making the tool's purpose unambiguous. It does not explicitly name sibling tools to differentiate, but the verb 'Remove' contrasts naturally with sibling 'pin'.

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 instruction 'Run pins() first to see the ids' provides a clear prerequisite and usage context. It does not mention when not to use the tool or explicitly name alternatives, but the guidance is sufficient for this simple operation.

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