Design against a GitHub repository

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It adds important context by stating that no OAuth grant will be performed and that a prior GitHub connection is required. However, it does not describe side effects like overwriting an existing repository link or what happens if the project already has a repo associated.

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 two sentences and front-loaded with the core action. Every sentence earns its place: the first states the purpose, the second adds a critical prerequisite and an exclusion. No wasted 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 provides the essential purpose and a key prerequisite, but it omits details about the 'visible' parameter and potential behavior on repeated calls. Since there is no output schema and no annotations, more context would be needed for a fully self-sufficient description.

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 only 33% (only 'repo' is described). The description does not explain the 'projectId' or 'visible' parameters, nor does it add meaning beyond the schema's existing example. Given the low coverage, the description fails to compensate for the undocumented parameters.

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 uses a specific verb ('Point') and resource ('project', 'connected GitHub repositories'), clearly stating the tool's function: associating a project with an existing GitHub repo. It also distinguishes itself from sibling tools like link_local_code by specifying GitHub repositories as the target.

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 a clear prerequisite: GitHub must already be connected on the account. It also explicitly states what the tool will not do ('will not perform an OAuth grant'), giving useful context. However, it does not mention alternative tools or explicit 'when not to use' guidance.

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