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

Annotations already declare readOnlyHint=true, so the safe read-only nature is known from structured data, and the description's GET reference merely corroborates it. It adds no behavioral detail such as pagination semantics, result ordering, or what fields each upload record contains.

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 sentences, front-loaded with the action and resource, followed by the API reference. No filler or restated title text.

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 read-only list endpoint with fully documented parameters and a readOnly annotation, the description is largely sufficient; an output schema is absent but the tool returns upload records, which the purpose makes clear. It could note pagination handling, but nothing essential for correct invocation is missing.

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%, so all six parameters (including service enum, page, pageSize, commitid) are already documented in the schema. The description adds no parameter-level meaning beyond what the schema provides, which is the baseline-3 case.

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 and resource: list coverage-report uploads for a given commit, and anchors it to the exact REST endpoint (GET .../commits/{commitid}/uploads/). No sibling tool covers upload records, so an agent can distinguish this from codecov_get_commit or codecov_list_commits without opening the schema.

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?

Usage is implied by the purpose (use it when you need the upload history for one commit), but there is no explicit when-to-use, when-not-to-use, or named alternative versus codecov_get_commit or codecov_get_coverage_report. The REST path adds locating context but no selection guidance.

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