How to integrate Personio MCP with Atomic Agent

Connect Atomic Agent to Personio MCP. List employees on parental leave, update job title for jane doe, and more using natural language, with authentication handled for you.

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Personio is an HR platform for managing employee records, attendance, absences, projects, and documents. It centralizes HR data and streamlines workforce administration for teams and HR leaders.

10 Tools

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 Personio.

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 Personio account. See the Atomic Agent documentation for installation instructions.

Also integrate Personio with

How Atomic Agent connects to Personio

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 Personio to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. 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.
  3. Ask Atomic Agent to do something in Personio. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Personio 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 Personio MCP server, and what's possible with it?

The Personio MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Personio account. It provides structured and secure access so your agent can perform Personio operations on your behalf.

Use Personio from Atomic Agent

With your account connected, ask Atomic Agent to work with Personio in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

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 for the current limits that apply to your connection.

TOOLS

Supported Tools

Every Personio action and event your agent gets out of the box.

List Absence Periods

Return v2 absence periods filtered by person, absence type, IDs, date-time bounds, or update time.

List Absence Types

Return the v2 absence types configured for the company, including IDs, names, categories, and units.

List Attendance Periods

Return v2 attendance periods filtered by people, projects, status, attribution dates, time bounds, or update time.

List Document Categories

Return the legacy Personnel Data document categories and IDs used to classify or filter company documents.

List Documents

Return v2 document metadata for one owner, optionally filtered by category and creation date; this does not download document contents.

List Employee Attributes

Return the standard and custom employee attributes readable by the connected integration, including the keys accepted by list employee records.

List Employee Records

Return legacy Personnel Data employee records with selectable standard or custom attributes and incremental-update filtering; use List Persons for ordinary v2 identity lookup.

List Person Employments

Return employment records for one v2 person, including status, type, and working-hours details.

List Persons

Return current v2 person summaries, optionally filtered by identity, status, or creation and update times; use employee records instead when custom Personnel Data attributes are needed.

List Projects

Return v2 time-tracking projects filtered by IDs, names, codes, status, hierarchy, or top-level membership.

FAQ

Frequently asked questions

With a standalone Personio MCP server, the agents and LLMs can only access a fixed set of Personio tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Personio and many other apps based on the task at hand, all through a single MCP endpoint.

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 Personio tools.

Yes, absolutely. You can configure which Personio 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.

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 Personio data and credentials are handled as safely as possible.

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