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

Annotations already declare readOnlyHint=true, idempotentHint=true, and openWorldHint=false, so the safety and repeatability profile is fully covered by structured data. The description adds nothing beyond that profile — no behavior on a missing/unknown id, no indication of what the caller state must be to read it.

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 with zero filler; every word earns its place. It is minimal rather than padded, though the extreme brevity borders on under-specification for the surrounding toolset.

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?

An output schema exists, so return values need not be described, and the one required parameter is fully documented in the schema. Annotations handle the safety profile, leaving only edge-case behavior (unknown id, permission requirements) unaddressed — a minor gap for a simple getter.

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 sole parameter's UUID format is documented in the schema, so the baseline of 3 applies. The description's 'by id' merely restates the parameter without adding format, sourcing, or constraint detail.

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 ('Get') and resource ('a project') and pins the lookup key ('by id'), so the agent knows exactly what the call fetches. It never differentiates from nearby siblings such as projects_list, projects_overview, or projects_get_assessment, so it falls short of a 5.

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?

There is no when-to-use guidance at all: nothing tells the agent to prefer this over projects_list when it already has an id, or over projects_overview when it wants a summarized view. The single sentence only describes the operation, leaving selection to inference.

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