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

Annotations cover the safety profile (write, non-destructive, non-idempotent, open-world), so the bar is lower. The description still adds real context: the initial NOT_STARTED state, the 200-char name cap, ISO-8601 date format, and the required `sprints:write` API-key scope. It does not describe the response payload or duplicate-name behavior.

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?

Four short sentences, front-loaded with the action and the most important constraint (parent group). No filler, though the optional-field enumeration is largely recoverable from the schema.

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?

There is no output schema, yet the description never indicates what is returned on success (sprint id, state). It also omits how to resolve `groupIdentifier`. Everything needed to make the call is present, but the post-call picture is not.

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 coverage is 86%, so the schema already documents `account`, `workspace`, `goal`, and the date fields. The description's main additions are the 200-char limit on `name` (undescribed in the schema) and confirming which fields are optional; the ISO-8601 note merely repeats the schema. Baseline 3 is appropriate.

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 ('Create a sprint inside a sprint group'), which separates it from pm_create_sprint_group and pm_update_sprint. It does not name any sibling explicitly, but the scoping phrase 'inside a sprint group' carries the differentiation.

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?

Usage is implied by the create verb and the required groupIdentifier, but there is no explicit when-to-use, no prerequisite chain (e.g. obtain a group via pm_list_sprint_groups), and no mention of alternatives or when not to create a sprint.

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