CC Fig MCP

Instructions

Implementation Reference

• src/talk_to_figma_mcp/tools/text-tools.ts:230-263 (handler)

  Full MCP tool registration block for 'set_font_weight', including Zod input schema, description, and async handler function that sends the command to Figma via sendCommandToFigma and returns success/error text response.

  server.tool(
    "set_font_weight",
    "Set the font weight of a text node in Figma",
    {
      nodeId: z.string().describe("The ID of the text node to modify"),
      weight: z.number().describe("Font weight (100, 200, 300, 400, 500, 600, 700, 800, 900)"),
    },
    async ({ nodeId, weight }) => {
      try {
        const result = await sendCommandToFigma("set_font_weight", {
          nodeId,
          weight
        });
        const typedResult = result as { name: string, fontName: { family: string, style: string }, weight: number };
        return {
          content: [
            {
              type: "text",
              text: `Updated font weight of node "${typedResult.name}" to ${typedResult.weight} (${typedResult.fontName.style})`
            }
          ]
        };
      } catch (error) {
        return {
          content: [
            {
              type: "text",
              text: `Error setting font weight: ${error instanceof Error ? error.message : String(error)}`
            }
          ]
        };
      }
    }
  );

• src/talk_to_figma_mcp/tools/index.ts:16-16 (registration)

  Invocation of registerTextTools(server), which registers the set_font_weight tool among other text tools.

  registerTextTools(server);

• src/talk_to_figma_mcp/types/index.ts:73-73 (schema)

  'set_font_weight' included in FigmaCommand type union for type-safe command strings.

  | "set_font_weight"