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

Annotations already declare readOnlyHint=true, so the safe-read profile is covered. The description adds that the lookup is scoped to the currently configured key and cites the backing endpoint (GET /me), but discloses nothing about rate limits, error behavior when the key is invalid, or response shape.

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?

One front-loaded sentence states the return value and the practical motivation, followed by a terse endpoint reference. No filler, and the most decision-relevant information comes first.

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 zero-argument read-only tool with no output schema, the description supplies enough: what it returns and why an agent would call it. It stops short of describing the returned fields (project id, environment id, names), which would have closed the last gap.

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 zero parameters (100% coverage of an empty schema), so there is nothing to disambiguate; baseline for no params applies. The description correctly conveys that the only input is the ambient x-api-key credential.

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 specific verb and resource: it returns the project and environment tied to the configured x-api-key. This identity/resolution purpose is clearly distinct from every sibling (create/delete/list/get of other resources), so an agent can distinguish it without opening the schema.

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?

Positions the tool as 'the fastest way to find the workspace and environment ids the other tools need,' which tells the agent to call it before tools that require those ids. It gives clear context but names no explicit alternative or exclusion condition.

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