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

Annotations already establish readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds that the payload is dated checkpoints with name/due/status, but says nothing about pagination, ordering, or whether unresolved fuzzy project matching can fail — modest added value on top of 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?

Two front-loaded sentences stating resource and purpose, plus a bare API reference link — no filler or repetition. Slightly under-explained rather than padded, which is a mild issue but not verbosity, so it earns a 4 rather than a 5.

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?

Five parameters with zero required and only 40% schema coverage, no output schema, and no annotation detail on scoping: this is a moderately complex tool whose description leaves parameter selection and defaults unaddressed. It partially compensates by naming the returned fields, but not enough for a higher score.

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 40%: client, client_id, and project_id carry no schema text, and only 'project' and 'include_finished' are documented. The description compensates for none of this — it never mentions a parameter name, the fuzzy-resolution behavior, or how client/client_id/project_id interact, so an agent gets no help on the undocumented half.

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 uses a specific verb+resource combination ('Read the dated checkpoints a project is measured against') and enumerates the returned fields (name, due date, status), which is unambiguous. It does not however name or distinguish itself from close siblings like list_project_events, list_project_issues, or get_project_context, 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?

It gives an explicit motivation ('judge urgency before picking up work', 'tell the human what a task is actually feeding into'), which is real usage context. But it offers no when-not guidance and never says how this differs from the other project-scoped list tools, leaving the choice to inference.

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