fetch_release_notes

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

With no annotations, the description carries the burden and does meaningfully disclose behavior: the upstream dependency (GitHub Releases API), the deliberate avoidance of training-data reconstruction, and the failure contract (returns found=false with a reason rather than guessing). It stops short of covering auth requirements, rate limits, or caching, so it is strong but not exhaustive.

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 tightly written sentences with no filler. The core action and source are front-loaded, and the failure-mode clause earns its place by setting expectations.

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?

An output schema exists, so return values needn't be enumerated, and the description still adds the found=false signal for the empty case. For a one-parameter read tool with no annotations, the remaining gap is the version-format contract, which is minor but real.

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 for the single 'version' parameter and it largely does not. Saying 'for a given version' adds nothing beyond the parameter name; the expected format (e.g. '2.4.6', '2.4.6-p1', composer-style constraint) and behavior for unknown versions are never specified.

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 (fetches), a specific resource (Magento's own release notes), and the exact source of truth (magento/magento2 GitHub Releases API). The scope is narrow and unambiguous, so an agent can tell it apart from siblings like check_updates or project_status 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?

The description implies the correct usage context by insisting it fetches real release notes and 'never reconstructs them from training data', which hints the agent should prefer this over answering from memory. However, it names no alternative sibling tool and gives no explicit when-to-use/when-not-to-use conditions (e.g. offline, cached, or unavailable-version cases).

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