add_gp_layer

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

With no annotations provided, the description must carry the full burden of disclosing side effects, required permissions, or state changes. It offers nothing—just the name—so the agent cannot infer whether this tool mutates data, requires specific object types, or has any safety implications.

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 extremely short, but this is under-specification rather than effective conciseness. It consists solely of the tool name and a prefix, which is useless to an agent. Slight credit for not being verbose, but it lacks any substantive 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?

Even though an output schema exists, the description provides no context about what the tool does, its inputs, or its expected behavior. For a tool that likely adds a layer to a grease pencil object, the description is entirely inadequate for an agent to invoke it correctly.

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?

The schema description coverage is 0% and the two parameters (layer_name and object_name) are not explained in the description. The description adds no meaning beyond the parameter names, failing to specify what these parameters do, their expected formats, or how they relate to each other.

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 'Blender Studio Pro MCP: add_gp_layer' is essentially the tool name with a generic prefix, providing no verb, resource, or action detail. It is a tautology that fails to state what the tool does, making it indistinguishable from other similar tools like list_gp_layers or set_gp_stroke_settings.

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?

No guidance is given on when to use this tool versus its siblings. The description does not mention prerequisites, alternatives, or any context that would help an agent decide between add_gp_layer and related grease pencil commands.

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