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

Annotations already declare destructiveHint=true, readOnlyHint=false and idempotentHint=false, so the safety profile is known. The description adds genuine value by explaining credential handling (argument vs Authorization header, never in URLs or error echoes), but it does not disclose the destructive consequences or that a stale revision will presumably be rejected.

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 with the operation stated first and the credential constraint second; no padding. The only weakness is that the second sentence spends budget on auth mechanics while required-parameter meaning goes unaddressed.

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 destructive, non-idempotent mutation with a nested opaque action object and no output schema, the description should say what effect the action has, how revision conflicts behave, and what is returned. It covers only credential handling, so an agent cannot confidently invoke it.

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% (credential alone), so the description carries most of the burden. It hints that revision must be 'current' and explains credential placement, but says nothing about the 'id' semantics or the opaque nested 'action' object, leaving three required parameters largely unexplained.

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 states a specific verb (Submit) and resource (one author-test action) scoped to the author-test domain, which separates it from submit_certification_action and submit_play_action by domain. It never names those siblings explicitly, so differentiation is inferred rather than stated.

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 guidance on when to use this versus submit_play_action/submit_certification_action, nor any reference to the surrounding flow (start_author_test, preview_author_step, author_status) that would tell an agent where this fits. Usage is only implied by the phrase 'author-test action'.

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