# OnceOnly integrations Connect OnceOnly to any other app, or use it from your AI client over MCP. OnceOnly is an idempotency API that prevents duplicate automation runs by blocking repeated events in automation workflows. Connects with an API key[onceonly.tech](https://onceonly.tech/) **11** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want to automate with OnceOnly? Give your AI client this address. `https://mcp.apiant.ai` Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser. ### Set it up in your client ### Claude Code Run this in the directory you want to work in. `claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai` Start Claude Code there, approve the server, and sign in in the browser page it opens. [Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code) ### Claude, web and desktop Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Cursor Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Codex and the ChatGPT desktop app Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### Any other MCP client Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) Popular ## OnceOnly with the apps people pair it with most - [ **HubSpot to OnceOnly** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/hubspot-to-onceonly) - [ **Salesforce to OnceOnly** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/salesforce-to-onceonly) - [ **Slack to OnceOnly** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-onceonly) - [ **Google Sheets to OnceOnly** Google Sheets](https://apiant.ai/connect/google-sheets-to-onceonly) - [ **Gmail to OnceOnly** Gmail is Google’s email service, featuring spam protection, search functions, and seamless integration with...](https://apiant.ai/connect/gmail-to-onceonly) - [ **Google Calendar to OnceOnly** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connect/google-calendar-to-onceonly) - [ **Google Drive to OnceOnly** Google Drive is a cloud storage solution for uploading, sharing, and collaborating on files across devices...](https://apiant.ai/connect/google-drive-to-onceonly) - [ **Mailchimp to OnceOnly** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-onceonly) Pair it ## Connect OnceOnly with another app - [ **HubSpot to OnceOnly** ](https://apiant.ai/connect/hubspot-to-onceonly) - [ **Salesforce to OnceOnly** ](https://apiant.ai/connect/salesforce-to-onceonly) - [ **Slack to OnceOnly** ](https://apiant.ai/connect/slack-to-onceonly) - [ **Google Sheets to OnceOnly** ](https://apiant.ai/connect/google-sheets-to-onceonly) - [ **Gmail to OnceOnly** ](https://apiant.ai/connect/gmail-to-onceonly) - [ **Google Calendar to OnceOnly** ](https://apiant.ai/connect/google-calendar-to-onceonly) - [ **Google Drive to OnceOnly** ](https://apiant.ai/connect/google-drive-to-onceonly) - [ **Mailchimp to OnceOnly** ](https://apiant.ai/connect/mailchimp-to-onceonly) - [ **Stripe to OnceOnly** ](https://apiant.ai/connect/stripe-to-onceonly) - [ **Shopify to OnceOnly** ](https://apiant.ai/connect/shopify-to-onceonly) - [ **QuickBooks Online to OnceOnly** ](https://apiant.ai/connect/quickbooks-online-to-onceonly) - [ **Pipedrive to OnceOnly** ](https://apiant.ai/connect/pipedrive-to-onceonly) - [ **ActiveCampaign to OnceOnly** ](https://apiant.ai/connect/activecampaign-to-onceonly) - [ **Notion to OnceOnly** ](https://apiant.ai/connect/notion-to-onceonly) - [ **Airtable to OnceOnly** ](https://apiant.ai/connect/airtable-to-onceonly) - [ **Trello to OnceOnly** ](https://apiant.ai/connect/trello-to-onceonly) - [ **Asana to OnceOnly** ](https://apiant.ai/connect/asana-to-onceonly) - [ **JIRA to OnceOnly** ](https://apiant.ai/connect/jira-to-onceonly) - [ **ClickUp to OnceOnly** ](https://apiant.ai/connect/clickup-to-onceonly) - [ **Zoom to OnceOnly** ](https://apiant.ai/connect/zoom-to-onceonly) - [ **Discord to OnceOnly** ](https://apiant.ai/connect/discord-to-onceonly) - [ **Twilio to OnceOnly** ](https://apiant.ai/connect/twilio-to-onceonly) - [ **SendGrid to OnceOnly** ](https://apiant.ai/connect/sendgrid-to-onceonly) - [ **Outlook to OnceOnly** ](https://apiant.ai/connect/outlook-to-onceonly) - [ **Intercom to OnceOnly** ](https://apiant.ai/connect/intercom-to-onceonly) - [ **Freshdesk to OnceOnly** ](https://apiant.ai/connect/freshdesk-to-onceonly) - [ **Brevo to OnceOnly** ](https://apiant.ai/connect/brevo-to-onceonly) - [ **Typeform to OnceOnly** ](https://apiant.ai/connect/typeform-to-onceonly) - [ **JotForm to OnceOnly** ](https://apiant.ai/connect/jotform-to-onceonly) - [ **Calendly to OnceOnly** ](https://apiant.ai/connect/calendly-to-onceonly) - [ **PandaDoc to OnceOnly** ](https://apiant.ai/connect/pandadoc-to-onceonly) - [ **Webflow to OnceOnly** ](https://apiant.ai/connect/webflow-to-onceonly) - [ **Wix to OnceOnly** ](https://apiant.ai/connect/wix-to-onceonly) - [ **Instagram to OnceOnly** ](https://apiant.ai/connect/instagram-to-onceonly) - [ **OpenAI to OnceOnly** ](https://apiant.ai/connect/openai-to-onceonly) - [ **OneDrive to OnceOnly** ](https://apiant.ai/connect/onedrive-to-onceonly) - [ **Google Docs to OnceOnly** ](https://apiant.ai/connect/google-docs-to-onceonly) - [ **Ontraport to OnceOnly** ](https://apiant.ai/connect/ontraport-to-onceonly) - [ **Freshworks CRM to OnceOnly** ](https://apiant.ai/connect/freshworks-crm-to-onceonly) - [ **Capsule CRM to OnceOnly** ](https://apiant.ai/connect/capsule-crm-to-onceonly) - [ **Copper to OnceOnly** ](https://apiant.ai/connect/copper-to-onceonly) - [ **Streak to OnceOnly** ](https://apiant.ai/connect/streak-to-onceonly) - [ **NetHunt CRM to OnceOnly** ](https://apiant.ai/connect/nethunt-crm-to-onceonly) - [ **MINDBODY to OnceOnly** ](https://apiant.ai/connect/mindbody-to-onceonly) - [ **PostgreSQL to OnceOnly** ](https://apiant.ai/connect/postgresql-to-onceonly) - [ **MySQL to OnceOnly** ](https://apiant.ai/connect/mysql-to-onceonly) - [ **Vercel to OnceOnly** ](https://apiant.ai/connect/vercel-to-onceonly) - [ **PagerDuty to OnceOnly** ](https://apiant.ai/connect/pagerduty-to-onceonly) - [ **Gravity Forms to OnceOnly** ](https://apiant.ai/connect/gravity-forms-to-onceonly) - [ **HubSpot Enterprise to OnceOnly** ](https://apiant.ai/connect/hubspot-enterprise-to-onceonly) - [ **Google Forms to OnceOnly** ](https://apiant.ai/connect/google-forms-to-onceonly) - [ **monday.com to OnceOnly** ](https://apiant.ai/connect/monday-com-to-onceonly) - [ **Google Ads to OnceOnly** ](https://apiant.ai/connect/google-ads-to-onceonly) - [ **Google Tasks to OnceOnly** ](https://apiant.ai/connect/google-tasks-to-onceonly) - [ **Telegram to OnceOnly** ](https://apiant.ai/connect/telegram-to-onceonly) - [ **MailerLite to OnceOnly** ](https://apiant.ai/connect/mailerlite-to-onceonly) - [ **Google Contacts to OnceOnly** ](https://apiant.ai/connect/google-contacts-to-onceonly) - [ **Kit to OnceOnly** ](https://apiant.ai/connect/kit-to-onceonly) - [ **Tally to OnceOnly** ](https://apiant.ai/connect/tally-to-onceonly) - [ **Kajabi to OnceOnly** ](https://apiant.ai/connect/kajabi-to-onceonly) What your agent can do with OnceOnly ## Triggers and actions 11 actions - Action **Add event** Adds an event to an agent run's timeline in OnceOnly, such as a step starting, a tool call, or a failure. - Action **Add policy** Creates or updates the governance policy for an agent, such as rate limits, spend limits and allowed or blocked tools. - Action **Add tool** Creates or updates a tool in your OnceOnly tool registry, pointing at your backend URL. Returns the saved tool without its secret. - Action **Check & Lock** Checks an idempotency key and locks it if it is new, telling you whether the event is a first occurrence or a duplicate. - Action **Delete tool** Permanently deletes a tool from your OnceOnly tool registry. - Action **Get policy** Returns the governance policy configured for an agent. - Action **Get run** Returns a run's timeline: the run id, the total number of events and the list of events recorded for it. - Action **Get tool** Returns the details of a registered tool by name, including its URL, scope, enabled state and retry settings. - Action **List policies** Returns every agent policy on the OnceOnly account, each with its agent id and policy settings. - Action **List runs** Returns the runs recorded on your OnceOnly account, with each run's latest status and event count. - Action **List tools** Returns the tools registered in your OnceOnly tool registry for a scope. Reviews ## What our customers say Questions ## OnceOnly, answered ### ### Is there a OnceOnly MCP server? APIANT's MCP server at https://mcp.apiant.ai works with OnceOnly. Add that address to any AI client that takes a remote MCP server, sign in once in your browser, and your client can build, test and run automations that use OnceOnly. Nothing to install. ### ### What can your agent do in OnceOnly? Any of OnceOnly's 11 actions, including Add event, Add policy, Add tool and Check & Lock. Your agent maps the data both ways and tests every scenario before it ships. ### ### Which apps can OnceOnly connect to? Any app in the catalog; the list on this page pairs OnceOnly with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector. ### ### What happens when something fails? Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships. ### ### Is there a free plan? Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.