ecosystem_sync_upstream

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

With no annotations, the description must disclose behavioral traits on its own. It does reveal the core git fetch + merge operation and the branch-specific impact. However, it omits important details such as how merge conflicts are handled, whether a clean working tree is required, or if the operation is reversible, which are relevant for a mutation tool.

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 a single, well-structured sentence that leads with the action and efficiently incorporates the branch-specific details. There is no redundancy or unnecessary information.

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?

For a tool with one parameter and no output schema, the description covers the essential operation and branch nuances. It lacks details on prerequisites, error conditions, or side effects, but given the tool's simplicity, it is reasonably 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 already documents the 'branch' parameter with 100% coverage ('main | dev'). The description adds meaningful context beyond the schema by explaining that main updates the stable branch and dev updates the bleeding edge, which helps the agent select the correct parameter 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 clearly states the tool's function: it synchronizes a local branch with upstream via 'git fetch + merge'. It also specifies the two branch options (main and dev) with their distinct roles, making it unambiguous and distinct from sibling tools like ecosystem_merge_main.

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 clear guidance on when to use the tool and how to choose the branch: 'main' for stable updates and 'dev' for bleeding-edge updates. However, it does not explicitly mention alternative tools or exclusion scenarios, so it falls short of a 5.

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