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

With no annotations, the description carries the full burden. It discloses that the operation requires admin scope and applies globally, and that the category parameter filters which tests are enabled. However, it does not explain whether the operation is idempotent, what happens to already-enabled tests, or what the response looks like, leaving some behavioral ambiguity.

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?

The description is three short sentences, front-loaded with the main action, then the optional filter, then the permission requirement. Every sentence earns its place with no filler or redundancy.

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 simple one-parameter tool with no output schema and no annotations, the description covers the essential aspects: what it does, the optional filter, and the auth requirement. It lacks information about side effects or reversibility, but given the low complexity, it is adequately complete.

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?

The input schema already provides 100% coverage for the single optional 'category' parameter, including an enum of categories and the note 'Omit to enable all.' The description repeats this information almost verbatim ('Optionally filter by category to only enable tests in that category') without adding new detail beyond the schema.

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 ('enable') and resource ('test definitions') with clear scope ('globally') and an optional filter. It distinguishes itself from siblings like disable_all_tests and trigger_all_tests by explicitly stating it enables definitions, not runs or disables them.

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?

Clear context is provided: use this to enable all test definitions globally, optionally filtered by category. It also states the admin scope prerequisite. However, it does not explicitly mention when not to use it or name alternative tools, though the sibling list implies this is for bulk enablement.

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