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

Annotations only say non-readonly, non-destructive; the description adds real behavioral context: the caller becomes manager, AI features are auto-enabled, and the project stays invisible to testers until published. It does not state what the call returns or what happens on a duplicate name (the schema hints name is unique), which keeps it from a 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?

Front-loaded with what the tool creates and the resulting state, then the workflow. Most sentences carry information, though a phrase like 'so it is immediately usable with the other tools' is mildly redundant with the AI-features sentence.

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 6-parameter creation tool with no output schema, the description covers lifecycle position, ownership, visibility, and defaults well. The one real gap is the return value (e.g. the created beta's identifier), which an agent would need to chain into createTask or publishBeta.

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 already 100%, so the baseline is 3, but the description adds cross-parameter semantics the schema cannot: only name is required at creation and every other field can be supplied later via updateBetaDetails. It does not elaborate on the boolean defaults, which the schema already covers.

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 new beta project') plus the resulting state ('as a draft') and the effect on the caller ('You become its manager'). This distinguishes it clearly from sibling mutations like duplicateBeta, archiveBeta, or restoreBeta.

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 an explicit ordered workflow naming the actual sibling tools (createBeta -> createTask -> createStep -> inviteTesters -> publishBeta/launchBeta), and even branches on schedule-vs-start-now. It also states the minimum viable call ('Only name is needed').

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