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

With no annotations, the description carries the full burden. It discloses the global scope, optional filtering, and admin permission requirement, but does not mention reversibility, impact on running tests, or the return value. It provides basic behavioral context but lacks deeper side-effect disclosure.

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, followed by optionality and a permission note. No extraneous words or redundancy; every sentence 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?

Given the low complexity (one optional parameter, no output schema, no annotations), the description adequately covers the core purpose, usage, and permission. It misses explicit guidance on alternatives and side-effect details, but these are not critical for this straightforward mutation tool.

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 100% with a descriptive enum and clear parameter description. The description's 'Optionally filter by category' essentially restates the schema, adding no new semantic value beyond what the schema already provides. Baseline 3 is appropriate.

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 'Disable' with a clear resource 'all test definitions globally', and the optional category filter adds specificity. It clearly distinguishes from siblings like enable_all_tests and trigger_all_tests by stating the action and scope.

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?

The description gives a prerequisite ('Requires admin scope') and hints at selective use via category filtering, but it does not explicitly mention alternatives like enable_all_tests or when not to use this tool. Usage is implied rather than explicitly contrasted with sibling tools.

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