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

With no annotations, the description carries the behavioral burden. It reveals token-based visibility and the subproject model (own issues/board/wiki, shared access only). It stops short of describing pagination or return shape, but for a no-parameter list operation this is sufficient.

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 concise sentences, with the core operation in the first and a genuinely useful data-model clarification in the second. No filler or repetition of schema information.

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 read-only tool, the description is nearly complete: it covers access scoping and subproject semantics. It could mention ordering or return fields, but the absence is minor given the tool's simplicity and the lack of input schema.

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?

No parameters exist, so the 0-parameter baseline of 4 applies. The description indirectly explains why no input is needed: results are determined entirely by the token's visibility.

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 clear action and resource: 'List the projects visible to this token.' It also clarifies token-scope behavior, so an agent can distinguish this read-only listing from project-creation or field-listing siblings.

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?

Provides clear context on when results are limited (project-scoped token) and explains subproject parent semantics. It does not explicitly name an alternative tool, but the read-only listing has no obvious sibling, so no exclusion is needed.

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