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

Goes beyond annotations by disclosing that explicit user confirmation is mandatory, and that DEVOPS_ORG_URL and DEVOPS_PAT are required with Pull Request Threads Read & Write permission. No contradiction with annotations.

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?

Well-structured and front-loaded with the WHEN condition, then the warning and workflow. A bit verbose, but every sentence carries actionable guidance and there is no filler.

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?

Covers when to use, prerequisites, confirmation requirement, and the full recommended workflow. It does not describe the return value, but that is not essential for correctly invoking this write operation.

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%, so the baseline applies. The tool description itself adds little parameter detail beyond the overall action, though the schema already documents each field adequately.

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?

Uses a specific verb and resource: 'post, add, or save a review comment to an ADO Pull Request.' It also states the WHEN condition and names the related analysis tool, making it easy to distinguish from the generic sibling ado_post_comment.

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?

Provides explicit when-to-use triggers, including example user phrases, and a recommended confirmation workflow that requires calling ado_analyze_pr_impact first and asking the user before posting. This is strong routing guidance with no ambiguity.

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