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

Annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so the safety profile is covered. The description adds real context beyond that: the meaning of the 'access' field (read vs write/read-and-set-up) and the scoping fact that an API key reaches exactly one project, which sets expectations for result size.

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?

Three short sentences, each carrying distinct load: what is returned, how the id is reused, and the API-key scoping constraint. No filler and the content inventory 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?

There is no output schema, so the description must describe the return shape, and it does (id, name, timezone, access with access semantics). Combined with the routing guidance to sibling tools, nothing an agent needs to call this correctly 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 takes no parameters, so the baseline is 4. The description earns that by explaining that the returned id is the value consumed as the 'project' argument by sibling tools, effectively documenting the parameter relationship across the tool set.

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 identifies the resource (the projects this connection can use) and enumerates what each item contains (id, name, timezone, access), so an agent knows exactly what comes back. It never states the verb explicitly (list/retrieve) and differentiates itself from the singular get_project only indirectly via 'any other project tool.'

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?

It states the operative condition precisely: pass a returned id as 'project' to any other project tool, and when there is more than one project every such tool needs it. That tells the agent both when to call this (to obtain ids) and what to do with the result, closing the multi-project ambiguity in one sentence.

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