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Alosies

GitLab MCP Server

by Alosies

cancel_pipeline

Cancel a running pipeline in GitLab using project ID and pipeline ID. Stop unwanted or stuck pipelines instantly.

Instructions

Cancel a running pipeline

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
project_idYesProject ID or path
pipeline_idYesPipeline ID
Behavior2/5

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

No annotations exist, so the description must disclose behavioral traits. It only states 'Cancel a running pipeline' without explaining side effects, permissions required, or what happens to associated jobs. This is insufficient for safe use.

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

Conciseness5/5

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

A single, concise sentence with no unnecessary words. The description is appropriately front-loaded and efficient.

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

Completeness3/5

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

Given the tool's simplicity and the presence of a complete input schema, the description is minimally adequate. However, it omits useful context such as idempotency, error handling, or post-cancellation state.

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?

Input schema has 100% description coverage, so the schema already documents the parameters. The description adds no additional meaning beyond the schema.

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 clearly states the action (cancel) and the resource (a running pipeline). It distinguishes from create, list, and get operations but does not explicitly differentiate from retry_pipeline or delete_pipeline.

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 is provided on when to use cancel_pipeline versus retry_pipeline, delete_pipeline, or other pipeline operations. The agent has no context for selecting this tool over alternatives.

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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