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chriz-3656

Pencil2D Model Context Protocol (MCP) Server

by chriz-3656

pencil2d_inspect

Inspect a Pencil2D .pclx project to retrieve canvas resolution, FPS, keyframe counts, layers, and palette data for validation or editing workflows.

Instructions

Inspect a Pencil2D project (.pclx file), returning canvas resolution, FPS, keyframe counts, layers, and palette.

Input Schema

NameRequiredDescriptionDefault
project_pathYesPath to the .pclx Pencil2D project file.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

A3.6/5.0
Behavior3/5

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

No annotations are provided, so the description carries the full burden. 'Inspect' implies a read-only operation and the listed return fields add useful behavioral context, but the description does not cover permissions, error cases (e.g., missing or malformed .pclx files), or whether any side effects occur.

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?

The definition is a single front-loaded sentence with no filler. The key action, file type, and return values all appear immediately.

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

Completeness4/5

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

For a simple one-parameter read tool with full schema coverage and no output schema, the description supplies the main return fields and enough context to call it correctly. Minor gaps remain around error behavior and explicit differentiation from pencil2d_validate.

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?

There is only one parameter and the schema describes it fully ('Path to the .pclx Pencil2D project file.'). The description adds no syntax or format details beyond that schema coverage, so baseline 3 applies.

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 uses a specific verb ('Inspect') and resource ('a Pencil2D project (.pclx file)') and enumerates the metadata returned. It is clearly a read/introspection tool among mutation-focused siblings like pencil2d_create and pencil2d_add_frame, though it does not explicitly name those siblings.

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

Usage Guidelines3/5

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

The phrase 'returning canvas resolution, FPS, keyframe counts, layers, and palette' implies the tool is for reading project metadata. However, it does not state when to use this instead of pencil2d_validate or otherwise give explicit alternatives or exclusions.

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