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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, and the description reinforces this by stating 'Nothing is written or emailed,' adding a no-side-effect/email detail beyond the structured hints. Useful confirmation for a tool whose name misleadingly implies a write operation.

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 tight sentences, closure stated first, alternative destination second — no filler. Every clause earns its place.

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 parameterless-in-practice reporting tool with no output schema, the description fully covers behavior (no writes/emails), the outcome (closure), and the next step (signup URL). Nothing an agent needs 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?

Both parameters are documented in the schema as 'Ignored — the list has closed' (100% coverage), so the schema carries the semantics. The description adds nothing parameter-specific, which is fine given the params are inert, 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 exactly what the tool does — it reports that the Early Access list has closed and points to an alternative signup — a specific and unusual purpose an agent can distinguish from siblings like post_feature_request or request_contact. The verb/resource relationship is unambiguous despite the tool being a no-op.

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?

Explicitly tells the agent where to send users instead (public signup URL) and that this tool only reports closure, which implicitly means don't expect it to enroll anyone. It stops short of a direct 'do not call for enrollment' instruction, but the routing guidance is clear.

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