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

Annotations already declare this is a non-readonly, non-idempotent, non-destructive local write, so the safety profile is covered. The description adds real context beyond that: the mcp:admin authorization requirement, the plan_limit_exceeded failure mode, and that the slug is auto-derived and uniquified. It doesn't cover reversibility or the returned identifier explicitly, keeping it below 5.

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?

A single front-loaded sentence states the action, followed by prerequisite and next-step clauses; there is almost no wasted wording. The inline ref/op syntax is dense but necessary for correct invocation.

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 workflow-anchored creation tool with no output schema, the description covers authorization, limit errors, slug behavior, and the required follow-up calls. Minor gaps remain (duplicate-name behavior, explicit return of the new projectId), but nothing critical is missing.

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%, so both `name` and the nested `feedback` object are already documented in the schema; the description's slug note largely restates the `name` description. Baseline 3 is appropriate since the schema does the heavy lifting.

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 ("Create a project in the workspace") and immediately adds the derived-slug behavior, so an agent can tell what it produces. It doesn't explicitly contrast itself with a sibling like list_projects or init, though its position in the workflow implicitly separates it from add_repository/ref.

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?

Gives concrete when-to-use context: requires the mcp:admin scope and is subject to plan project caps (plan_limit_exceeded). It also spells out the follow-up workflow (add_repository, then ref op:"use_project", or init once a repository is attached). No explicit exclusion or alternative-selection rule is given, so it falls short of a 5.

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