git_create_branch

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

No annotations are provided, but the description discloses the behavior: creates and checks out a branch, outlines auto-naming logic, and specifies the return structure. It does not mention potential issues like a dirty working directory or error conditions, but for a creation tool, it is fairly transparent.

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 very concise and well-structured: a clear one-line purpose, followed by a paragraph on naming and options, then a short return specification. Every sentence adds value without redundancy.

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 5 parameters, no required fields, and no output schema (though return fields are listed), the description covers naming, options, and returns. It does not address error conditions or preconditions, but for a straightforward creation tool, it is sufficiently complete.

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 input schema has 0% description coverage, so the description carries the full burden. It adds meaning to parameters: explains that branch_name is explicit, while issue_number/description trigger auto-naming, and describes options like from_branch and pull_latest with defaults.

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: 'Create and checkout a git branch.' This is a specific verb and resource, and it distinguishes the tool from siblings like git_commit or git_pull.

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 naming conventions (explicit or auto) and options (from_branch, pull_latest) with defaults. It gives some guidelines but does not explicitly state when not to use this tool or when alternatives might be better.

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