sync_fork

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

The description discloses that it merges the default branch of upstream into the current fork, but does not mention side effects such as creating a merge commit, pushing changes, potential conflicts, or required permissions. With no annotations, the description carries full burden and falls short.

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 sentence that is front-loaded with the action verb 'Sync' and includes a clarifying parenthetical. No unnecessary words.

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 covers the core operation but lacks information about return values or prerequisites such as having an upstream configured. Given the absence of an output schema and annotations, this is a clear gap.

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 provides descriptive text for all three parameters (owner, repo, branch), so baseline is 3. The description's parenthetical about the default branch mirrors the schema's own note, adding no new semantic value.

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 explicitly states 'Sync a fork with its upstream repository' and clarifies the action as merging the default branch. This clearly identifies the tool's purpose and distinguishes it from siblings like fork_repository or merge_pull_request.

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 usage when a fork is behind upstream but does not explicitly state when to use it versus alternatives like creating a pull request or merging directly. No exclusions or alternative guidance is provided.

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