github_create_repository

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

No annotations exist, so the description carries the entire burden. It discloses that the action is a click on a submit-style button (i.e., a mutation) and that confirmation is required, but says nothing about irreversibility, what happens to an already-existing repo, permission requirements, or what state the page is left in. The phrase 'explicit confirmation' is also ambiguous about whether it refers to the `confirm` parameter or to the agent's own reasoning.

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?

A single dense sentence with no filler, and the ordering puts the action before the constraints. It reads slightly telegraphically ('only on prepared GitHub new-repo form'), but nothing is wasted.

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?

This is an unannotated mutation tool with no output schema and zero parameter documentation, so the description must do more. Missing are the required prior step (prepare), the meaning of `confirm`, and the post-click outcome or error behavior, all of which an agent needs before firing a repository-creation click.

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% for three required parameters. The description hints at a confirmation concept but never explains what `confirm: true` versus `false` does, nor what `owner` and `name` mean or whether they must match the prepared form. It adds almost no meaning beyond the raw property names.

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 names a concrete action ('Click Create repository') and the exact context it operates in (a prepared GitHub new-repo form), which implicitly separates it from the sibling github_prepare_repository. It never states plainly that the effect is creating a repository, relying on the tool name for that, but the UI-level action is unambiguous.

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?

Two explicit preconditions are given: an 'explicit confirmation' must have occurred and the form must already be 'prepared'. That effectively routes the agent to call the prepare tool first. No explicit when-not or failure-path guidance is offered, so it stops short of a full 5.

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