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

readOnlyHint=true already tells the agent this is a safe read, so the description's burden is lower. It adds the upstream endpoint (GET /api/v1/projects) and the set of returned fields, but says nothing about pagination behavior or default result limits beyond what the schema already documents.

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 compact sentences with zero filler, and the core purpose is front-loaded before the endpoint detail. Efficient, though the second sentence is largely redundant with the title.

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 list tool with a fully documented schema, the description is adequate. Since there is no output schema, enumerating the returned fields (client, budgeted hours, task rate, current hours, due date) usefully compensates, though pagination behavior remains unstated.

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 every parameter (page, sort, filter, number, status, per_page, client_id) is fully documented in the schema. The description adds no additional syntax or semantic detail, so the baseline 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?

States a specific verb and resource ("List projects") and enumerates the fields returned, which distinguishes it from the many other list_* siblings by resource. It stops short of noting any scoping or filtering behavior that would fully separate it from siblings like list_tasks or list_clients.

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?

No guidance on when to use this versus alternatives, no mention of pagination or filter-driven retrieval despite the schema exposing page, per_page, filter, status, client_id. The agent is left to infer usage entirely.

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