# How to integrate Scheduleonce MCP with Atomic Agent ```json { "title": "How to integrate Scheduleonce MCP with Atomic Agent", "toolkit": "Scheduleonce", "toolkit_slug": "scheduleonce", "framework": "Atomic Agent", "framework_slug": "atomic-agent", "url": "https://composio.dev/toolkits/scheduleonce/framework/atomic-agent", "markdown_url": "https://composio.dev/toolkits/scheduleonce/framework/atomic-agent.md", "updated_at": "2026-08-11T13:05:10.513Z" } ``` ## Introduction Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Scheduleonce. This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Scheduleonce account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions. ## Also integrate Scheduleonce with - [OpenAI Agents SDK](https://composio.dev/toolkits/scheduleonce/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/scheduleonce/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/scheduleonce/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/scheduleonce/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/scheduleonce/framework/codex) - [OpenClaw](https://composio.dev/toolkits/scheduleonce/framework/openclaw) - [Hermes](https://composio.dev/toolkits/scheduleonce/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/scheduleonce/framework/google-adk) - [LangChain](https://composio.dev/toolkits/scheduleonce/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/scheduleonce/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/scheduleonce/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/scheduleonce/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/scheduleonce/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/scheduleonce/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/scheduleonce/framework/autogen) ## TL;DR ### How Atomic Agent connects to Scheduleonce Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication. Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account. ## Connect Scheduleonce to Atomic Agent ### Connect Scheduleonce to Atomic Agent - Sign up or sign in to the [Composio dashboard](https://dashboard.composio.dev/?cta_placement=atomic-agent-api-key). Copy your API key. - In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart. - Ask Atomic Agent to do something in Scheduleonce. It searches Composio for the right tool. - On first use, open the sign-in link returned in the chat. Connect your Scheduleonce account, then return to Atomic Agent to continue. ### Headless setup Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file. ```bash COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY ``` ## What is the Scheduleonce MCP server, and what's possible with it? The Scheduleonce MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Scheduleonce account. It provides structured and secure access so your agent can perform Scheduleonce operations on your behalf. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `SCHEDULEONCE_BOOK_TIME_SLOT` | Book Time Slot | Tool to book a time slot on a booking calendar in OnceHub. Use when you need to schedule a meeting by booking one of the available time slots. First retrieve available time slots using 'Get available time slots', then use this tool to book one of those slots with guest information. | | `SCHEDULEONCE_CANCEL_BOOKING` | Cancel Booking | Tool to cancel a booking by ID in OnceHub. Use when you need to cancel an existing booking, optionally providing a cancellation reason and controlling whether to send cancellation email notifications. | | `SCHEDULEONCE_CREATE_CONTACT` | Create Contact | Tool to create a new contact in ScheduleOnce. Use when you need to add a contact with email, first name, and last name. Additional fields like company, phone, and address details can be optionally provided. | | `SCHEDULEONCE_CREATE_ONE_TIME_LINK_FOR_BOOKING_CALENDAR` | Create One-Time Link for Booking Calendar | Tool to create a one-time booking link for a booking calendar in OnceHub. Use when you need to generate a unique, single-use booking link for a customer. One-time links are good for one booking only and automatically expire after one year if not used. The booking calendar must be published to create one-time links. | | `SCHEDULEONCE_CREATE_USER` | Create User | Tool to create a new user account in OnceHub. Use when you need to add a new user with first name, last name, and email. Optional role can be specified. | | `SCHEDULEONCE_DELETE_CONTACT` | Delete Contact | Tool to delete a contact by ID from OnceHub. Use when you need to permanently remove a contact from the system. | | `SCHEDULEONCE_DELETE_USER` | Delete User | Tool to delete a user account from OnceHub. Use when you need to permanently remove a user from the system. | | `SCHEDULEONCE_GET_AVAILABLE_TIME_SLOTS` | Get Available Time Slots | Tool to retrieve available time slots for a booking calendar from OnceHub. Use when you need to check availability for scheduling appointments within a specific date range (maximum 30 days). Returns real-time availability based on booking rules and participant calendars. | | `SCHEDULEONCE_GET_SINGLE_BOOKING` | Get Single Booking | Tool to retrieve a single booking by ID from OnceHub. Use when you need to fetch complete booking details including timing, customer information, location, status, and form submission data. | | `SCHEDULEONCE_GET_SINGLE_BOOKING_CALENDAR` | Get Single Booking Calendar | Tool to retrieve a single booking calendar by ID from OnceHub. Use when you need to fetch detailed information about a specific booking calendar including its subject, name, URL, host, published status, and duration. | | `SCHEDULEONCE_GET_SINGLE_CONTACT` | Get Single Contact | Tool to retrieve a single contact by ID from OnceHub. Use when you need to fetch complete contact details including personal information, location data, and custom fields. | | `SCHEDULEONCE_GET_SINGLE_MASTER_PAGE` | Get Single Master Page | Tool to retrieve a single master page by ID from OnceHub. Use when you need to fetch complete master page details including name, label, URL, and active status. | | `SCHEDULEONCE_GET_SINGLE_USER` | Get Single User | Tool to retrieve a single user by ID from OnceHub. Use when you need to fetch detailed information about a specific user including their name, email, status, role, timezone, and team associations. | | `SCHEDULEONCE_GET_USER_SCHEDULING_AVAILABILITY` | Get User Scheduling Availability | Tool to get user scheduling availability from OnceHub. Use when you need to retrieve a user's weekly schedule, working hours, and any date-specific overrides. | | `SCHEDULEONCE_LIST_ALL_BOOKING_CALENDARS` | List All Booking Calendars | Tool to list all booking calendars in the account. Use when you need to retrieve all booking calendars with optional cursor-based pagination. | | `SCHEDULEONCE_LIST_ALL_BOOKING_PAGES` | List All Booking Pages | Tool to list all booking pages in the account. Use when you need to retrieve all booking pages with optional cursor-based pagination. | | `SCHEDULEONCE_LIST_ALL_BOOKINGS` | List All Bookings | Tool to list all bookings in the account. Use when you need to retrieve bookings with optional filtering by time ranges, pagination, or expansion of related objects. | | `SCHEDULEONCE_LIST_ALL_CONTACTS` | List All Contacts | Tool to list all contacts in the OnceHub account. Use when you need to retrieve contact information with optional filtering by creation time, update time, owner, or cursor-based pagination. | | `SCHEDULEONCE_LIST_ALL_EVENT_TYPES` | List All Event Types | Tool to list all event types in the account. Use when you need to retrieve all event types with optional cursor-based pagination to understand available event type options. | | `SCHEDULEONCE_LIST_ALL_MASTER_PAGES` | List All Master Pages | Tool to list all master pages in the account. Use when you need to retrieve all master pages with optional cursor-based pagination. | | `SCHEDULEONCE_LIST_ALL_TEAMS` | List All Teams | Tool to list all teams in the OnceHub account. Use when you need to retrieve team information with optional cursor-based pagination. | | `SCHEDULEONCE_LIST_ALL_USERS` | List All Users | Tool to list all users in the OnceHub account. Use when you need to retrieve user information with optional cursor-based pagination. | | `SCHEDULEONCE_MARK_BOOKING_AS_NO_SHOW` | Mark Booking as No-Show | Tool to mark a completed booking as no-show in OnceHub. Use when the customer did not attend the scheduled meeting and you need to update the booking status to reflect the no-show. | | `SCHEDULEONCE_TEST_API_KEY` | Test API Key | Tool to validate API key authentication for OnceHub. Use when you need to verify that your API key is valid and active before making other API calls to the platform. | | `SCHEDULEONCE_UPDATE_CONTACT` | Update Contact | Tool to update an existing contact in ScheduleOnce. Use when you need to modify contact information such as name, email, company, or phone number. | | `SCHEDULEONCE_UPDATE_USER` | Update User | Tool to update an existing user in OnceHub. Use when you need to modify user information such as name, email, role, or timezone. | | `SCHEDULEONCE_UPDATE_USER_SCHEDULING_AVAILABILITY` | Update User Scheduling Availability | Tool to update user scheduling availability in OnceHub. Use when you need to modify a user's weekly schedule, set working hours for specific days, or add date-specific overrides for holidays or special events. | ## Supported Triggers None listed. ## Troubleshooting ### Why is my API key rejected? Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying. ### Why are Composio tools unavailable after saving a key? Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk. ### Does Composio have a free plan? The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See [Composio pricing](/pricing) for the current limits that apply to your connection. ## Complete Code None listed. ## Conclusion ### Use Scheduleonce from Atomic Agent With your account connected, ask Atomic Agent to work with Scheduleonce in natural language. You can connect more apps through the same Composio integration as you need them. Visit the [Atomic Agent website](https://atomicagent.io/?cta_placement=atomic-agent-site) or inspect the [Atomic Agent source code](https://github.com/AtomicBot-ai/atomic-agent?cta_placement=atomic-agent-repo). ## How to build Scheduleonce MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/scheduleonce/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/scheduleonce/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/scheduleonce/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/scheduleonce/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/scheduleonce/framework/codex) - [OpenClaw](https://composio.dev/toolkits/scheduleonce/framework/openclaw) - [Hermes](https://composio.dev/toolkits/scheduleonce/framework/hermes-agent) - [Google ADK](https://composio.dev/toolkits/scheduleonce/framework/google-adk) - [LangChain](https://composio.dev/toolkits/scheduleonce/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/scheduleonce/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/scheduleonce/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/scheduleonce/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/scheduleonce/framework/crew-ai) - [Pydantic AI](https://composio.dev/toolkits/scheduleonce/framework/pydantic-ai) - [AutoGen](https://composio.dev/toolkits/scheduleonce/framework/autogen) ## Related Toolkits - [Google Calendar](https://composio.dev/toolkits/googlecalendar) - Google Calendar is a time management service for scheduling meetings, events, and reminders. It streamlines personal and team organization with integrated notifications and sharing options. - [Google Sheets](https://composio.dev/toolkits/googlesheets) - Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly. - [Notion](https://composio.dev/toolkits/notion) - Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place. - [Airtable](https://composio.dev/toolkits/airtable) - Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations. - [Asana](https://composio.dev/toolkits/asana) - Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals. - [Google Tasks](https://composio.dev/toolkits/googletasks) - Google Tasks is a to-do list and task management tool integrated into Gmail and Google Calendar. It helps you organize, track, and complete tasks across your Google ecosystem. - [Linear](https://composio.dev/toolkits/linear) - Linear is a modern issue tracking and project planning tool for fast-moving teams. It helps streamline workflows, organize projects, and boost productivity. - [Jira](https://composio.dev/toolkits/jira) - Jira is Atlassian’s platform for bug tracking, issue tracking, and agile project management. It helps teams organize work, prioritize tasks, and deliver projects efficiently. - [Clickup](https://composio.dev/toolkits/clickup) - ClickUp is an all-in-one productivity platform for managing tasks, docs, goals, and team collaboration. It streamlines project workflows so teams can work smarter and stay organized in one place. - [Monday](https://composio.dev/toolkits/monday) - Monday.com is a customizable work management platform for project planning and collaboration. It helps teams organize tasks, automate workflows, and track progress in real time. - [Addressfinder](https://composio.dev/toolkits/addressfinder) - Addressfinder is a data quality platform for verifying addresses, emails, and phone numbers. It helps you ensure accurate customer and contact data every time. - [Aeroleads](https://composio.dev/toolkits/aeroleads) - Aeroleads is a B2B lead generation platform for finding business emails and phone numbers. Grow your sales pipeline faster with powerful prospecting tools. - [Agiled](https://composio.dev/toolkits/agiled) - Agiled is an all-in-one business management platform for CRM, projects, and finance. It helps you streamline workflows, consolidate client data, and manage business processes in one place. - [AirOps MCP](https://composio.dev/toolkits/airops_mcp) - AirOps MCP is AirOps' managed content platform exposing brand context, knowledge bases, and workflows. Use it to give agents brand-aware content, automate content workflows, and track Brand Kit edits. - [Amazing Marvin](https://composio.dev/toolkits/amazing_marvin) - Amazing Marvin is a personal productivity app for tasks, projects, habits, planning, time tracking, and rewards. It helps you build a flexible workflow that matches how you actually work. - [AnyDB](https://composio.dev/toolkits/any_db) - AnyDB is a flexible collaborative database platform for organizing records, files, and automated workflows. It helps teams centralize data, collaborate on records, and automate routine tasks. - [Apaleo](https://composio.dev/toolkits/apaleo) - Apaleo is a cloud-based property management platform for hospitality businesses. It centralizes reservations, billing, and daily operations for smoother hotel management. - [Appointo](https://composio.dev/toolkits/appointo) - Appointo is an appointment booking platform for Shopify stores. It lets businesses add online scheduling to their websites with zero coding. - [ApptiveGrid](https://composio.dev/toolkits/apptivegrid) - ApptiveGrid is a collaborative no-code database and app platform for spaces, grids, forms, and structured records. It helps teams organize operational data, collect inputs, and build lightweight business apps without custom backend work. - [Ascora](https://composio.dev/toolkits/ascora) - Ascora is a cloud-based field service management platform for service businesses. It streamlines scheduling, invoicing, and customer operations in one place. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Scheduleonce MCP? With a standalone Scheduleonce MCP server, the agents and LLMs can only access a fixed set of Scheduleonce tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Scheduleonce and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Atomic Agent? Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Scheduleonce tools. ### Can I manage the permissions and scopes for Scheduleonce while using Tool Router? Yes, absolutely. You can configure which Scheduleonce scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do. ### How safe is my data with Composio Tool Router? All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Scheduleonce data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)