Create pipeline schedule

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

Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, and openWorldHint=true, so the mutation profile is known. The description adds real value by disclosing the return wrapper with a PipelineSchedule model and the MissingParameterError/ParameterError failure modes, which annotations do not cover, but it says nothing about permission requirements or what state the created schedule starts in (active/paused).

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 core sentence is front-loaded and efficient, and the Returns/Raises block is useful. However, the 'Args: **kwargs: Additional parameters for the request (e.g., project_id)' line is a docstring artifact that conveys almost no information for a 125-parameter schema and could be replaced with the handful of meaningful fields.

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 create tool with 125 optional parameters, zero schema descriptions, no output schema, and no required-field declaration, the description is far too thin. An agent cannot determine which parameters are needed to produce a valid schedule, or what the returned PipelineSchedule contains.

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% across 125 parameters, so the description carries the full burden and largely fails it. Only project_id is called out (as a **kwargs example), while the parameters that actually define a pipeline schedule — ref, cron, cron_timezone, description, active — are never mentioned, and dozens of unrelated-looking fields go entirely unexplained.

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 states a specific verb and resource ('Create a pipeline schedule for a specific project'), which clearly separates it from edit_pipeline_schedule, delete_pipeline_schedule, and run_pipeline_schedule. It stops short of naming an alternative or clarifying that a schedule alone does not run a pipeline, so it is clear but not fully differentiated.

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?

There is no when-to-use guidance, no mention of prerequisites (maintainer/owner role), and no comparison to run_pipeline_schedule or gitlab_create_pipeline_schedule_variable. The only implicit guidance is the Raises note that project_id is required, which tells the agent nothing about when to choose this tool over its siblings.

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