How to connect Lexoffice to Hermes Agent
Connect Lexoffice to Hermes with ClawLink: paste your Lexoffice key once and 41 tools work from chat. No MCP server to run, nothing stored on your machine.
LexofficeAPI KEYMCPLexoffice is a cloud-based accounting software designed for freelancers and small businesses, offering invoicing, expense management, and integration with banks.. Once connected, Hermes Agent can read and act on Lexoffice from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent Lexoffice access start with registering your own OAuth app or pasting API keys into env files, then leave the token refresh and tool wiring to you. ClawLink gives Hermes a more practical Lexoffice setup: pair once in the browser and your always-on Hermes agent can act on Lexoffice for you, reading and doing real work on your behalf with no auth, token refresh, or tool wiring to build yourself.
Setup
It takes three steps to connect Hermes to Lexoffice.
1Install and pair
Install the ClawLink plugin, then pair Hermes with a one-time browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable- 2
Connect Lexoffice
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with Lexoffice?"
Install by command
The prompt above walks Hermes through this. By hand, it is four commands and a browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable
hermes clawlink begin # prints an approval link — open it and approve
hermes clawlink finish # after approving in the browser
hermes clawlink testThen connect Lexoffice in the ClawLink dashboard — paste your Lexoffice API key once.
Verify the connection by asking Hermes:
Use Lexoffice to download file and walk me through the result in plain English.
Using a different agent?
The Hermes plugin is one client of ClawLink's MCP server. Claude Code, Cursor, Codex, or any agent that can run a shell command pairs with the same ClawLink account through the CLI:
npx -y @useclawlink/cli loginlogin opens the same browser approval and stores a credential locally. Once Lexoffice is connected in the dashboard, that agent calls the same 41 Lexoffice tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Lexoffice MCP for Hermes
Looking for a Lexoffice MCP server for Hermes Agent? ClawLink connects Lexoffice to Hermes Agent and exposes 41 Lexoffice tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw Lexoffice integration works the same way.
What the Hermes Agent Lexoffice integration can do
41 Lexoffice tools are ready for Hermes Agent once the account is connected. The 30 below are the ones people reach for most; your agent can call all 41.
30 of 41 Lexoffice tools for Hermes
| Tool | What it does |
|---|---|
Download file lexoffice_download_file | Download a file from lexoffice by its ID |
Get article lexoffice_get_article | Retrieve an article by ID from Lexoffice |
Get contact lexoffice_get_contact | Retrieve a specific contact by its ID |
Get credit note lexoffice_get_credit_note | Retrieve a credit note by its UUID from Lexoffice |
Get credit note document lexoffice_get_credit_note_document | Render a credit note document (PDF) |
Get delivery note lexoffice_get_delivery_note | Retrieve a specific delivery note from Lexoffice by its ID |
Get dunning lexoffice_get_dunning | Retrieve a dunning document by its ID |
Get dunning document lexoffice_get_dunning_document | Render and retrieve a dunning document (PDF) reference |
Get event subscription lexoffice_get_event_subscription | Retrieve a specific event subscription by its ID |
Get invoice lexoffice_get_invoice | Retrieve a specific invoice by its UUID |
Get invoice document lexoffice_get_invoice_document | Render an Invoice Document (PDF) by invoice ID |
Get order confirmation lexoffice_get_order_confirmation | Retrieve a specific order confirmation by its ID |
Get order confirmation document lexoffice_get_order_confirmation_document | Render an Order Confirmation Document as PDF |
Get payment lexoffice_get_payment | Retrieve payment information for a specific voucher (invoice or credit note) from Lexoffice |
Get profile lexoffice_get_profile | Retrieves the user and company profile information from Lexoffice |
Get quotation lexoffice_get_quotation | Retrieve a quotation by its ID |
Get quotation document lexoffice_get_quotation_document | Render a quotation document as a PDF file |
Get voucher lexoffice_get_voucher | Retrieve a specific voucher by its UUID |
List articles lexoffice_list_articles | List articles from Lexoffice using filters and pagination |
List contacts lexoffice_list_contacts | Retrieve all contacts from Lexoffice with optional filters |
List countries lexoffice_list_countries | Retrieve the list of all available countries with tax classifications from Lexoffice |
List event subscriptions lexoffice_list_event_subscriptions | Retrieve all event subscriptions for the current access token |
List payment conditions lexoffice_list_payment_conditions | Retrieve list of currently configured payment conditions from Lexoffice |
List posting categories lexoffice_list_posting_categories | Retrieve the list of posting categories for bookkeeping vouchers (revenue or expense) supported |
List print layouts lexoffice_list_print_layouts | Retrieve all print layouts for invoices and other documents |
List recurring templates lexoffice_list_recurring_templates | Retrieve all recurring templates from Lexoffice |
List voucherlist lexoffice_list_voucherlist | Retrieve voucherlist from Lexoffice including bookkeeping vouchers (salesinvoices |
List vouchers lexoffice_list_vouchers | Filter vouchers by voucher number from Lexoffice |
Create article lexoffice_create_article | Create a new article (product or service) in Lexoffice |
Create contact lexoffice_create_contact | Create a new contact (customer or vendor) in Lexoffice |
Try it: find the Lexoffice tool you need
Browse the 30 Lexoffice tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Use Lexoffice to download file and walk me through the result in plain English.
Pull the relevant data from Lexoffice, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Lexoffice, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Lexoffice, summarize it in plain English, and point out anything that needs attention.
ClawLink vs. building it yourself
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want Lexoffice working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Lexoffice API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Lexoffice account becomes available to the agent without you building credential management. |
| Ongoing maintenance | You own refresh logic, permission debugging, environment config, and every provider-specific edge case for Lexoffice. | ClawLink handles the repetitive integration plumbing so your team can focus on the workflow instead of the infrastructure. |
| Agent usability | You still need to expose the right Lexoffice actions to the runtime in a format your agent can reliably use. | 41 tools for Lexoffice are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Lexoffice to AI agents. It is developer infrastructure: Python and TypeScript SDKs, an MCP server, and a catalog past 1,000 apps, aimed at teams shipping agent products. ClawLink is built for Hermes Agent users instead. You install the plugin once, connect Lexoffice in the browser, and the 41 tools above work from chat. There is no SDK and no config file, and the Lexoffice key you paste at setup is stored server-side rather than kept in your environment. Choosing between them? Read the full Composio alternatives comparison.
Troubleshooting
Hermes paired but still can't use Lexoffice
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
Connection succeeds but no tools appear
Reconnect Lexoffice from the dashboard, then start a fresh chat if the runtime still has the old tool catalog loaded.
"Tool schema not loaded yet" error when calling Lexoffice tools
Lexoffice tool schemas load on demand the first time a tool runs and are cached after that, so this error usually clears on its own: wait a few seconds and retry the same request. If every Lexoffice call keeps failing with it in a fresh chat, reconnect from the dashboard, and contact support if it still persists — that pattern points to a configuration problem on our side, not something you can fix by reconnecting again.
Lexoffice returns 403 or "permission denied" on one action while others work
Two usual causes. The connected account may not have access to the specific workspace, inbox, store, or project in the request — check that first. If access looks right, the agent may have sent a placeholder value (like "YOUR_ID" or an example id from documentation) instead of a real one: ask it to run a list or search tool first, then retry the action with a real id from those results. Most failures at this stage are one of these two, not ClawLink bugs.
API key setup works but results look incomplete
Double-check that the API key for Lexoffice has the right scopes or account access. A valid key can still be too limited for some reads or writes.
FAQ
Is there a Hermes Agent Lexoffice integration?
Yes. ClawLink is the fastest way to connect Hermes to Lexoffice: link your Lexoffice account once in the browser and Hermes Agent can call the Lexoffice API through 41 ready-made tools — no custom code or token handling.
How do I connect Lexoffice to Hermes with ClawLink?
Install the plugin with hermes plugins install ClawLink-HQ/hermes-plugin --enable, then pair once: run hermes clawlink begin, approve the link in your browser, and run hermes clawlink finish. Connect Lexoffice in the dashboard and Hermes can use it from the next message — no config files, and the Lexoffice key you paste is stored server-side instead of in your environment.
How long does it take to connect Lexoffice to Hermes Agent?
About two minutes. Sign in, click Connect next to Lexoffice in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring Lexoffice up myself?
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want Lexoffice working from chat.
Hermes paired but still can't use Lexoffice
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
