Fetch GitLab repository file URL

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds useful context about bounded UTF-8 content and same-instance restriction, but does not disclose error behavior, authentication needs, or how bounds are enforced beyond what the schema hints.

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 front-loads the core action and includes key constraints. Every phrase adds value, with no redundant or filler content.

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 tool has a rich output schema and clear annotations, so return-value details are not needed. However, the description lacks parameter-level guidance and explicit usage alternatives, which matters given the 0% schema description coverage and the presence of closely related sibling tools like get_blob and get_file.

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 0%, so the description carries the burden of explaining parameters, but it only vaguely references 'bounded' content and URL types. It does not explain url format, start_line, end_line, or max_bytes semantics, leaving the agent to infer parameter meaning from names and schema constraints alone.

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 fetches bounded UTF-8 repository-file content from a same-instance GitLab blob, raw, or repository-files API URL. It specifies the verb, resource, and input type, and distinguishes it from sibling tools like get_blob and get_file by emphasizing URL-based access.

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 gives clear context on when to use the tool: when you have a same-instance GitLab blob, raw, or repository-files API URL. It does not explicitly name alternatives or exclusions, but the URL-focused wording implies the appropriate use case compared to path-based siblings.

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