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

Annotations already establish that this is a non-read-only, non-destructive, non-idempotent, closed-world operation. The description adds useful behavioral context beyond that: it discloses the per-call cost, the fact that failed calls are free, the default status set, and how custom statuses should be ordered.

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?

The description is compact and every sentence carries useful information about the board concept, status configuration, or billing. It could be more front-loaded with the creation action rather than opening with a conceptual definition, but there is little wasted text.

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?

Given the mutation annotations and no output schema, the description covers cost, failure billing, and status defaults, but it never explicitly states what is created or what the caller should expect on success. It is adequate to invoke the tool, but not fully complete for a create operation.

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 25%, so the description must compensate. It adds meaningful semantics for the statuses parameter by explaining defaults, object shape, and board ordering, and it explains that the key numbers tasks, but it does not add much for name or description beyond what is obvious from the schema.

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 explains what a project board is, including its key format and default statuses, but never explicitly says this tool creates one. The title and tool name imply creation, but the description itself remains conceptual rather than action-oriented and does not distinguish this from siblings like projects_board or projects_list.

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 explicit guidance on when to use projects_create versus alternatives such as projects_board or projects_list. It describes default statuses and cost but does not state when creation is appropriate or what prerequisites exist.

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