validate_pipeline_stage

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

The description discloses that the tool rejects missing/empty keys and treats sub-agent output with suspicion, but it does not specify behavior for malformed input (e.g., invalid JSON in output_json, malformed required_keys). With no annotations, the description carries the full burden and could be more comprehensive.

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 concise with a header, two sentences, and an arg list. It is front-loaded and avoids fluff. The 'M5.7.4' prefix adds minimal value but does not harm. Slightly more structure (e.g., separating behavior from args) could improve readability.

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 that an output schema exists (though not shown), the description does not need to explain return values. It adequately covers the validation logic and parameters. However, it omits error handling details and edge cases, which is acceptable for a simple 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 description coverage is 0%, so the description must compensate. It explains both parameters: output_json as 'JSON string of the sub-agent output dict' and required_keys as 'comma-separated list of required keys' with an example. This adds meaning beyond the schema's type-only definition.

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 clearly states the tool validates a sub-agent output before passing to the next pipeline stage, with specific rejection criteria (missing/empty keys). The verb 'validate' and resource 'sub-agent output' are unambiguous. It distinguishes from siblings as no other validation tool is present in the sibling list.

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 implies usage context ('before passing to the next pipeline stage') but does not explicitly state when to use versus alternatives, nor does it mention conditions when the tool should not be used. There is no guidance on prerequisites or fallback options.

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