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

Annotations only cover the rough safety profile (readOnly=false, destructive=false). The description adds genuinely useful context beyond that: the value is a human-read judgement in the portfolio view, it should be evidence-based, and the note is mandatory. This meaningfully informs the agent's decision to call 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?

Front-loads the core purpose and keeps the guidance to two tight sentences with no filler. The trailing API reference URL is marginally useful but slightly extraneous.

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 mutation whose safety profile is covered by annotations and which has no output schema, the description covers purpose, usage conditions, and the required note. The only real gap is guidance on choosing among the several project/client identification parameters.

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 only 33%, so the description must compensate. It clarifies the meaning of the health values and stresses the required 'note' ('always include the note'), but the project/client/project_id/client_id parameters remain undocumented in both schema and description, so it only partially fills the gap.

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+resource ('Record whether a project is On track, At risk or Off track') and enumerates the exact values being set, so the agent knows precisely what the tool mutates. It does not explicitly distinguish itself from siblings like update_project or log_project_issue, so it stops 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?

Provides a clear when-to-use condition ('only set it when you have evidence') and even lists triggering evidence (missed milestone, blocked work, scope change), which is strong guidance. It stops short of 5 because it names no alternative tool for related operations.

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