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Alosies

GitLab MCP Server

by Alosies

create_merge_request

Create a new merge request in a GitLab project by specifying the source and target branches, title, and optional details like labels and assignees.

Instructions

Create a new merge request

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
titleYesMerge request title
labelsNoComma-separated list of labels
project_idYesProject ID or path
descriptionNoMerge request description
assignee_idsNoArray of user IDs to assign
milestone_idNoMilestone ID
reviewer_idsNoArray of user IDs to review
source_branchYesSource branch name
target_branchYesTarget branch name
Behavior2/5

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

No annotations are provided, and the description offers no behavioral insights beyond the creation action. It does not disclose side effects, permissions required, return values, or error conditions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence that is not verbose, but it lacks structure or additional detail. It is acceptably concise but not exemplary.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the moderate complexity (9 parameters) and lack of output schema, the description is insufficient. It does not help differentiate from many sibling tools or provide necessary context for correct invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% coverage with descriptions for all 9 parameters, so the tool name and description do not need to add extra meaning. However, the description adds no value beyond the schema, meeting the baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states 'Create a new merge request', which clearly indicates the verb and resource. It distinguishes from sibling tools like update_merge_request and list_merge_requests, though it is essentially the same as the tool name.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives such as create_issue or update_merge_request. No context about prerequisites or typical usage scenarios.

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

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