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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds meaningful behavioral context by specifying that only 'supported, non-secret' configuration is returned and that the scope is a single 'authorized project', which clarifies the data exposure boundary 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?

A single, front-loaded sentence communicates the essential purpose and scope with zero filler. Every word 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 simple read-only configuration tool with an output schema, rich annotations, and a well-documented optional parameter, the description is largely complete. A minor gap is that 'supported' configuration is not elaborated and no hint is given about how this differs from get_project_context, but nothing critical is missing for invoking it correctly.

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?

Schema description coverage is 100% and the project_id parameter already has a detailed description including allowed forms and default behavior. The tool description adds no additional parameter semantics, so the baseline of 3 applies.

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 precise verb ('Read'), a clear resource ('supported, non-secret configuration'), and scope ('one authorized project'). This distinguishes it from siblings like update_project_settings (write operation) and get_project_context (project context), even without opening schemas.

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 implies it should be used when reading non-secret configuration for a project, but it does not explicitly state when to prefer it over alternatives such as get_project_context or list_projects, nor does it mention exclusions. Usage context is clear but not fully elaborated.

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