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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, and the description adds meaningful behavioral context: results are scoped to the current token, each result includes id and name, and an empty list has a specific meaning. It also correctly notes that no operation on this surface creates projects, which is useful beyond the annotations.

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?

The description is three sentences with no filler. The core purpose is front-loaded, the cross-tool dependency is stated in the second sentence, and the empty-list handling is a compact, valuable addition. Every sentence earns its place.

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 parameterless list operation with no output schema, the description is complete: it covers access scope, result fields, empty-list meaning, and the correct user-facing action for that case. No important detail is missing.

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 tool has zero parameters and the schema coverage is 100%, so there is no parameter meaning for the description to add. The description focuses instead on output semantics, which is appropriate for a parameterless tool and meets the baseline for this case.

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 ('List'), a specific resource ('Loadster projects'), and the access scope ('current token can access'). It also names the returned fields (id and name), making the tool's purpose unmistakable and distinguishable from the many other list_* sibling tools.

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 explicitly positions this tool as the prerequisite for every other tool by stating 'Every other tool takes one of these ids.' It also gives concrete guidance for the empty-list edge case: nothing on this surface creates a project, so the user should create one in the Dashboard and call this again. This is actionable and clarifies when to use it.

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