--- title: "Connect Personio to OnceOnly - APIANT.ai" description: "When \"Employee Updated\" fires in Personio, your agent runs \"Add event\" in OnceOnly." canonical: "https://apiant.ai/connect/personio-to-onceonly" --- # Connect Personio to OnceOnly When **Employee Updated** fires in [Personio](https://apiant.ai/connections/personio), your agent runs **Add event** in [OnceOnly](https://apiant.ai/connections/onceonly). Describe the whole flow and it is built, tested on every scenario and kept running. Personio **7** triggers Personio **20** actions OnceOnly **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 Personio and OnceOnly to do together? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. 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) Example flows ## What Personio can start in OnceOnly - When **Employee Updated** in Personio then **Add event** in OnceOnly - When **Employment Updated** in Personio then **Add policy** in OnceOnly Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships. Everything your agent can do with Personio and OnceOnly ## Triggers and actions 7 triggers · 31 actions - Trigger **Employee Updated** Triggers when an employee is updated. - Trigger **Employment Updated** Triggers when one or more Employment details of a Person are updated - Trigger **New Absence** Triggers when a new absence is created. - Trigger **New Candidate** Fires when a new recruiting candidate is added in Personio. - Trigger **New Employee** Triggers when a new employee is created. - Trigger **New Employment Created** Triggers when one or more Employment details of a Person are created - Trigger **New Open Position** Triggers when a new open position is created. - Action **Add project** /v2/projects - create a project. - Action **Create Absence** Creates a new absence. - Action **Create Attendance** Creates a new attendance. - Action **Create Employee** Creates a new employee. - Action **Delete absence** /v2/absence-periods/{id} - delete an absence period. - Action **Delete attendance** /v2/attendance-periods/{id} - delete an attendance period. - Action **Delete person** /v2/persons/{id} - delete a person. - Action **Find Absence** Finds an absence by employee ID. - Action **Find Employee** Finds a employee based on email. - Action **Find Person** Finds a person by their Personio ID, name, last name and email, optionally including their absence information. - Action **Get Employment** Retrieves one employment of a person by id: position, status, type, working hours, org units, cost centers, supervisor, office, legal entity, dates. - Action **List absence types** /v2/absence-types - list absence types. - Action **List Compensations** Lists compensations filtered by person.id and a start_date/end_date window; returns id, amount, interval, type, effective_from per record. - Action **List legal entities** /v2/legal-entities - list legal entities. - Action **List org units** /v2/org-units - list org units. - Action **List projects** /v2/projects - list projects. - Action **Update absence** /v2/absence-periods/{id} - update an absence period. - Action **Update Attendance** Updates an existing attendance. - Action **Update Employee** Updates an existing employee. - Action **Update Employment** updates an employment (position, department, office, weekly hours, status, etc.); requires personio:persons:write. Fires the employment.updated webhook. - 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. ## Each app on its own - [ **Personio** Personio is a holistic HR software for companies from 10 - 2000 employees.](https://apiant.ai/connections/personio) - [ **OnceOnly** OnceOnly is an idempotency API that prevents duplicate automation runs by blocking repeated events in...](https://apiant.ai/connections/onceonly) Reviews ## What our customers say ## More from Personio - [ **Personio to Google Chat** Google Chat is a communication software developed by Google built for teams that provides direct messages...](https://apiant.ai/connect/personio-to-google-chat) - [ **Personio to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/personio-to-salesforce) - [ **Personio to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/personio-to-slack) - [ **Personio to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/personio-to-stripe) - [ **Personio to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/personio-to-shopify) - [ **Personio to QuickBooks Online** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/personio-to-quickbooks-online) ## More into OnceOnly - [ **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) Questions ## Personio and OnceOnly, answered ### ### What can start an automation from Personio? Any of Personio's 7 triggers in the catalog, including Employee Updated, Employment Updated, New Absence and New Candidate. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in OnceOnly when something happens in Personio? 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. ### ### Can it also run from OnceOnly to Personio? OnceOnly has no triggers in the catalog today, so automations start in Personio. If you need the other direction, ask: your agent reads OnceOnly's API documentation and adds it. ### ### Do I have to build a connector for Personio or OnceOnly? No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running. ### ### Can my AI client use Personio and OnceOnly without building an automation? Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both. ### ### 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.