select-account

Instructions

Implementation Reference

• src/auth-tools.ts:125-166 (registration)

  Registers the 'select-account' MCP tool. Includes tool name, description, input schema (accountId: string), and handler function that calls authManager.selectAccount and returns success/error response.

  server.tool(
    'select-account',
    'Select a specific Microsoft account to use',
    {
      accountId: z.string().describe('The account ID to select'),
    },
    async ({ accountId }) => {
      try {
        const success = await authManager.selectAccount(accountId);
        if (success) {
          return {
            content: [
              {
                type: 'text',
                text: JSON.stringify({ message: `Selected account: ${accountId}` }),
              },
            ],
          };
        } else {
          return {
            content: [
              {
                type: 'text',
                text: JSON.stringify({ error: `Account not found: ${accountId}` }),
              },
            ],
          };
        }
      } catch (error) {
        return {
          content: [
            {
              type: 'text',
              text: JSON.stringify({
                error: `Failed to select account: ${(error as Error).message}`,
              }),
            },
          ],
        };
      }
    }
  );

• src/auth-tools.ts:131-166 (handler)

  The handler function for the 'select-account' tool. Takes accountId, calls authManager.selectAccount(accountId), and formats success or error response as MCP content.

    async ({ accountId }) => {
      try {
        const success = await authManager.selectAccount(accountId);
        if (success) {
          return {
            content: [
              {
                type: 'text',
                text: JSON.stringify({ message: `Selected account: ${accountId}` }),
              },
            ],
          };
        } else {
          return {
            content: [
              {
                type: 'text',
                text: JSON.stringify({ error: `Account not found: ${accountId}` }),
              },
            ],
          };
        }
      } catch (error) {
        return {
          content: [
            {
              type: 'text',
              text: JSON.stringify({
                error: `Failed to select account: ${(error as Error).message}`,
              }),
            },
          ],
        };
      }
    }
  );

• src/auth.ts:487-505 (helper)

  Core helper method in AuthManager class that implements account selection logic: finds account by ID, sets selectedAccountId, persists to storage (keytar/file), clears token cache, and logs.

  async selectAccount(accountId: string): Promise<boolean> {
    const accounts = await this.listAccounts();
    const account = accounts.find((acc: AccountInfo) => acc.homeAccountId === accountId);
  
    if (!account) {
      logger.error(`Account with ID ${accountId} not found`);
      return false;
    }
  
    this.selectedAccountId = accountId;
    await this.saveSelectedAccount();
  
    // Clear cached tokens to force refresh with new account
    this.accessToken = null;
    this.tokenExpiry = null;
  
    logger.info(`Selected account: ${account.username} (${accountId})`);
    return true;
  }