set_corner_radius

Modify corner radius values on Figma design elements to adjust visual styling and create rounded edges for selected nodes.

Instructions

Set the corner radius of a node in Figma

Input Schema

TableJSON Schema

Name	Required	Description
`nodeId`	Yes	The ID of the node to modify
`radius`	Yes	Corner radius value
`corners`	No	Optional array of 4 booleans to specify which corners to round [topLeft, topRight, bottomRight, bottomLeft]

Implementation Reference

src/talk_to_figma_mcp/server.ts:1344-1371 (handler)

Handler function for the set_corner_radius tool. Destructures nodeId, radius, and optional corners parameters, calls sendCommandToFigma to delegate to the Figma plugin, and returns success/error messages.

async ({ nodeId, radius, corners }) => {
  try {
    const result = await sendCommandToFigma("set_corner_radius", {
      nodeId,
      radius,
      corners: corners || [true, true, true, true],
    });
    const typedResult = result as { name: string };
    return {
      content: [
        {
          type: "text",
          text: `Set corner radius of node "${typedResult.name}" to ${radius}px`,
        },
      ],
    };
  } catch (error) {
    return {
      content: [
        {
          type: "text",
          text: `Error setting corner radius: ${error instanceof Error ? error.message : String(error)
            }`,
        },
      ],
    };
  }
}

src/talk_to_figma_mcp/server.ts:1333-1343 (schema)

Input schema using Zod validation for the set_corner_radius tool: nodeId (string), radius (number, min 0), corners (optional array of exactly 4 booleans).

{
  nodeId: z.string().describe("The ID of the node to modify"),
  radius: z.number().min(0).describe("Corner radius value"),
  corners: z
    .array(z.boolean())
    .length(4)
    .optional()
    .describe(
      "Optional array of 4 booleans to specify which corners to round [topLeft, topRight, bottomRight, bottomLeft]"
    ),
},

src/talk_to_figma_mcp/server.ts:1330-1372 (registration)

MCP tool registration for 'set_corner_radius' using McpServer.tool(), including description, input schema, and inline handler function.

server.tool(
  "set_corner_radius",
  "Set the corner radius of a node in Figma",
  {
    nodeId: z.string().describe("The ID of the node to modify"),
    radius: z.number().min(0).describe("Corner radius value"),
    corners: z
      .array(z.boolean())
      .length(4)
      .optional()
      .describe(
        "Optional array of 4 booleans to specify which corners to round [topLeft, topRight, bottomRight, bottomLeft]"
      ),
  },
  async ({ nodeId, radius, corners }) => {
    try {
      const result = await sendCommandToFigma("set_corner_radius", {
        nodeId,
        radius,
        corners: corners || [true, true, true, true],
      });
      const typedResult = result as { name: string };
      return {
        content: [
          {
            type: "text",
            text: `Set corner radius of node "${typedResult.name}" to ${radius}px`,
          },
        ],
      };
    } catch (error) {
      return {
        content: [
          {
            type: "text",
            text: `Error setting corner radius: ${error instanceof Error ? error.message : String(error)
              }`,
          },
        ],
      };
    }
  }
);

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