block_command
Prevent specific terminal commands from executing by adding them to a blacklist for controlled command management.
Instructions
Add a command to the blacklist. Once blocked, the command cannot be executed until unblocked.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| command | Yes |
Implementation Reference
- src/command-manager.ts:33-41 (handler)Core implementation of the block_command tool. Adds the command to the blockedCommands Set (after normalizing to lowercase), saves to config file, returns true if newly blocked.
async blockCommand(command: string): Promise<boolean> { command = command.toLowerCase().trim(); if (this.blockedCommands.has(command)) { return false; } this.blockedCommands.add(command); await this.saveBlockedCommands(); return true; } - src/server.ts:236-242 (handler)MCP server handler for block_command tool call. Parses input args and invokes commandManager.blockCommand.
case "block_command": { const parsed = BlockCommandArgsSchema.parse(args); const blockResult = await commandManager.blockCommand(parsed.command); return { content: [{ type: "text", text: blockResult }], }; } - src/server.ts:102-107 (registration)Registers the block_command tool in the MCP server's tool list with description and input schema.
{ name: "block_command", description: "Add a command to the blacklist. Once blocked, the command cannot be executed until unblocked.", inputSchema: zodToJsonSchema(BlockCommandArgsSchema), }, - src/tools/schemas.ts:23-25 (schema)Zod schema for validating block_command input: requires a 'command' string.
export const BlockCommandArgsSchema = z.object({ command: z.string(), });