firefox-devtools-mcp

Instructions

Implementation Reference

• src/tools/snapshot.ts:164-175 (handler)

  Primary MCP tool handler for 'clear_snapshot'. Acquires Firefox instance via getFirefox and calls its clearSnapshot method, returning a success response.

  export async function handleClearSnapshot(_args: unknown): Promise<McpToolResponse> {
    try {
      const { getFirefox } = await import('../index.js');
      const firefox = await getFirefox();
  
      firefox.clearSnapshot();
  
      return successResponse('🧹 Snapshot cleared');
    } catch (error) {
      return errorResponse(error as Error);
    }
  }

• src/tools/snapshot.ts:52-59 (schema)

  Tool schema definition including name 'clear_snapshot', description, and empty input schema.

  export const clearSnapshotTool = {
    name: 'clear_snapshot',
    description: 'Clear snapshot cache. Usually not needed.',
    inputSchema: {
      type: 'object',
      properties: {},
    },
  };

• src/index.ts:128-128 (registration)

  Registration of the clear_snapshot tool handler in the central toolHandlers Map.

  ['clear_snapshot', tools.handleClearSnapshot],

• src/index.ts:172-172 (registration)

  Inclusion of clearSnapshotTool in the allTools array for MCP tool listing.

  tools.clearSnapshotTool,

• src/firefox/index.ts:339-344 (helper)

  FirefoxClient.clearSnapshot() method invoked by the tool handler, which delegates to the SnapshotManager.clear().

  clearSnapshot(): void {
    if (!this.snapshot) {
      throw new Error('Not connected');
    }
    this.snapshot.clear();
  }