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

No annotations are provided, and the description does not disclose any behavioral aspects such as error handling, side effects, or edge cases (e.g., malformed URLs, missing owner/repo). The tool appears to be a simple parse, but the lack of transparency limits an agent's ability to anticipate outcomes.

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 extremely concise, consisting of a single sentence. It avoids unnecessary verbosity and is well-structured, though it omits essential details that would require additional sentences.

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?

The description is incomplete for an agent to use the tool effectively. It does not specify the return value (e.g., owner and repo as separate fields), how to invoke the tool (which parameter to provide), or the purpose of the many irrelevant parameters. The absence of an output schema and any contextual details makes it inadequate for correct usage.

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?

The description does not explain any of the nine parameters. While the schema provides individual descriptions, they are generic and largely irrelevant to the stated purpose (e.g., 'city', 'feed', 'zone' have no connection to parsing a GitHub URL). The 'url' parameter description ('HTTPS URL to normalize or cite') is generic and does not mention GitHub-specific parsing. The description adds no meaningful semantic clarity beyond the schema.

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 action ('Parse') and the target ('owner and repo from a GitHub URL'), which differentiates it from sibling tools like 'normalize-url' or 'figma-url-shape'. However, it does not specify the output format (e.g., separate strings or an object), leaving some ambiguity.

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 provides no guidance on when to use this tool versus alternatives, what constitutes a valid GitHub URL, or how to handle non-GitHub inputs. It is a single sentence with no contextual or conditional advice.

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