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kicholiz

Figma Write Bridge MCP

by kicholiz

create_component_from_node

Convert an existing Figma node into a reusable main component. Specify the node ID and optional name to turn a design element into a component.

Instructions

Convert an existing node into a main component.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameNo
nodeIdYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.7/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden. It does not disclose whether the source node is consumed/converted in place, whether the operation is reversible (undo/checkpoint), or what permissions or preconditions apply.

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

Conciseness4/5

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

A single front-loaded sentence with no filler or redundancy. It is efficient, though the brevity shades into under-specification rather than tight editing.

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?

With no annotations, no output schema, and 0% parameter coverage, the description is the only source of behavioral and parameter information and it provides almost none. It is insufficient for a mutation-style tool with an undocumented optional parameter.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must compensate and largely does not. 'Existing node' loosely maps to nodeId, but the optional 'name' parameter is never explained (is it the new component's name, and what happens if omitted?).

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?

States a specific verb ('Convert') and resource ('existing node into a main component'), so the agent knows exactly what transformation occurs. It does not, however, distinguish itself from the sibling create_component, which sounds like it produces a similar artifact.

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 when-to-use, when-not-to-use, or alternative is stated. The sibling create_component and combine_as_variants are obvious candidates for confusion, and nothing here routes the agent between them.

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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