Discord MCP Server

Instructions

Implementation Reference

• src/core/DiscordController.ts:69-80 (registration)

  Dynamic dispatching for tool execution: converts snake_case tool names like 'get_message_history' to camelCase 'getMessageHistory' and calls the corresponding method on AutomationManager.

  private async callAutomationMethod(action: string, params: any): Promise<string> {
    // Convert action name to method name (snake_case to camelCase)
    const methodName = action.replace(/_([a-z])/g, (g) => g[1].toUpperCase());
    
    // Check if method exists
    if (typeof (this.automationManager as any)[methodName] === 'function') {
      // Call the method with params
      return await (this.automationManager as any)[methodName](...Object.values(params));
    }
    
    throw new Error(`Method '${methodName}' not found in AutomationManager`);
  }

• src/core/AutomationManager.ts:526-529 (handler)

  Core handler function for 'discord_get_message_history' tool: validates input parameters and fetches message history from Discord channel using DiscordService.

  async getMessageHistory(channelId?: string, limit?: number, before?: string, after?: string): Promise<string> {
    const parsed = schemas.GetMessageHistorySchema.parse({ channelId, limit, before, after });
    return await this.discordService.getMessageHistory(parsed.channelId, parsed.limit, parsed.before, parsed.after);
  }

• src/types.ts:328-333 (schema)

  Input schema (Zod) for the tool, validating channelId (required string) and optional limit, before, after parameters.

  export const GetMessageHistorySchema = z.object({
    channelId: z.string().describe("Channel ID"),
    limit: z.number().optional().describe("Number of messages to fetch"),
    before: z.string().optional().describe("Message ID to fetch before"),
    after: z.string().optional().describe("Message ID to fetch after")
  });