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

Annotations declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the safety profile is partly covered. But the description says nothing about side effects: whether opening creates a new build, overwrites an existing one, what state a resumed build lands in, or why an idempotency_key is mandatory. For a mutation with 10 parameters, that is a substantial gap beyond what the annotations provide.

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?

It is a single front-loaded sentence with the main verb first and no filler. The trailing 'or resume a failed GlowUp' clause is slightly tacked-on, but nothing is wasted.

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?

With 10 parameters, 0% schema coverage, no output schema, and only hint-level annotations, the description is far too thin. An agent cannot tell what a successful call returns (a build id? a URL?), which parameters are conditional on the action enum, or how the required idempotency_key should be formed.

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 0%, so the description must carry the parameter burden, and it only loosely hints at glowup_ref ('concept'), page_id ('page'), and action='resume'. The remaining parameters — name, build_type, new_copy, report_id, recommendation_id, idempotency_key — are completely unexplained, including the non-obvious new_copy flag and the three-valued action enum.

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 uses a specific verb ('Open an editable build') and names the source ('an accepted GlowUp concept or page') plus a second mode ('resume a failed GlowUp'). It is clear what the tool does, but it never distinguishes itself from sibling tools such as builds_open or glowup_start, leaving the agent to guess which entry point applies.

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?

It implies a precondition ('an accepted GlowUp concept') and a trigger ('resume a failed GlowUp'), which is better than nothing. However, it gives no guidance on when to choose this over builds_open, glowup_start, or glowup_attach, and no mention of what 'accepted' means or who can call it.

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