Upload file to project

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

Annotations already indicate readOnlyHint=false, so the write nature is known. The description adds that it returns a markdown snippet, which is useful. However, it does not disclose additional behavioral traits like whether the upload is persistent, requires special permissions, or has rate limits. It is adequate but not rich.

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, front-loaded sentence that efficiently states the action and outcome without redundant wording. Every word adds value.

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 simple upload tool with well-documented parameters and no output schema, the description sufficiently covers the purpose and return value. It lacks specific details about permission requirements or the distinction from repository file operations, but this is a minor gap given the tool's simplicity.

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 100%, with clear descriptions for each parameter (file_path, filename, project_id). The description does not add extra parameter context beyond what the schema provides, so it meets the baseline of 3.

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: uploads a local file to the project's upload store, and specifies the outcome (returns markdown snippet for embedding). This distinguishes it from sibling tools like gitlab_create_or_update_file that modify repository files.

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 the use case (uploading files for embedding in issues/MRs/comments) but does not explicitly state when to use this tool versus alternatives like gitlab_create_or_update_file or gitlab_commit_files. No exclusions or alternate tool names are mentioned.

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