mcp-server-gitlab

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

No annotations are provided, so the description carries full burden. It states this is an update operation, implying mutation, but doesn't disclose behavioral traits such as required permissions, whether changes are reversible, rate limits, or what the response looks like (e.g., success/failure indicators). For a mutation tool with zero annotation coverage, this is a significant gap in transparency.

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, efficient sentence that front-loads the core purpose. It avoids unnecessary words and directly states the tool's function. However, it could be slightly more structured by explicitly listing all updatable fields for clarity.

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?

Given the complexity (mutation tool with 8 parameters), lack of annotations, and no output schema, the description is incomplete. It doesn't cover behavioral aspects like error handling, permissions, or response format, and provides minimal usage guidance. This is inadequate for a tool that modifies resources in a collaborative system like GitLab.

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%, so the schema already documents all 8 parameters thoroughly. The description adds minimal value by mentioning 'assignee 和 reviewers', which maps to 'assigneeId' and 'reviewerIds' parameters, but doesn't provide additional context beyond what's in the schema. This meets the baseline of 3 when schema does the heavy lifting.

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 ('更新' meaning update) and resource ('指定项目的 Merge Request'), and specifies what can be updated ('包括指派 assignee 和 reviewers'). However, it doesn't explicitly differentiate from sibling tools like 'Gitlab Create MR Tool' or 'Gitlab Accept MR Tool', which would require more specific scope or condition statements.

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 no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing an existing MR), exclusions, or compare to siblings like 'Gitlab Create MR Tool' for creation or 'Gitlab Accept MR Tool' for merging. This leaves the agent without context for tool selection.

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