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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds genuinely non-obvious context: results are permission-scoped to what the token can see on the service, which affects how an agent should interpret an empty or partial result.

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?

Two compact sentences with the purpose and scope stated first, no hedging or filler. The trailing REST endpoint reference is marginally redundant for an agent but useful for mapping to Codecov docs.

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 no output schema, the description should carry more of the return-shape burden; it says 'owners' but does not indicate what an owner record contains or how pagination surfaces results, despite page/pageSize parameters existing. Adequate but leaves a real gap.

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 100% and all three parameters (page, pageSize, service with its enum of six providers) are documented in the schema itself. The description adds no syntax or format detail beyond what the schema already provides, so baseline 3 applies.

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?

States a specific verb (List) and resource (owners / organizations / users), plus a scoping qualifier ('the token can see on a git service'). This separates it adequately from codecov_list_users and codecov_list_repos, though it never names those siblings explicitly.

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 the use case (enumerating orgs/users visible to the current token on a given git service), but gives no explicit when-to-use conditions and no guidance on choosing between this and codecov_list_users or codecov_get_owner.

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