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Sevdesk for AI agents

sevDesk is online accounting software for small businesses and freelancers, covering invoicing, expense tracking, and financial reporting. It is widely used by German-speaking small businesses to manage bookkeeping. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect SevdeskSee the 122 actions ↓
Finance and accountingAPI keyMCP + RESTsevdesk.de
AUDIT LOG · SEVDESKPOLICY: acme-support
09:41:07 · claude · u_8f2read
sevdesk.get_tags
Get Tags✓ allowed · 212ms
09:41:08 · claude · u_8f2read
sevdesk.get_parts
Get Parts✓ allowed · 164ms
09:41:09 · claude · u_8f2write
sevdesk.create_tag
Create Tag✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
sevdesk.delete_contact
Delete Contact✕ blocked · policy: deny
EVERY SEVDESK CALL, ON THE RECORD
01 · USE CASES

What agents do in Sevdesk.

01

Book a payment against an invoice

Record a booked amount against an open invoice once payment has actually landed in the account.

02

Create a credit note from an invoice

Generate a credit note tied to an existing invoice when a refund or correction is needed.

03

Confirm before deleting a contact

Check a contact's records and get sign-off before deleting it, since linked invoices reference that contact.

02 · ACTIONS

122 Sevdesk actions, graded by risk.

Every Sevdesk action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

66

Look things up. Allowed by default.

  • sevdesk.get_tags
    Get Tags
  • sevdesk.get_parts
    Get Parts
  • sevdesk.get_orders
    Get Orders
  • sevdesk.get_places
    Get Places
  • sevdesk.get_contacts
    Get Contacts
  • sevdesk.get_invoices
    Get Invoices
  • sevdesk.get_progress
    Get Export Progress
  • sevdesk.get_vouchers
    Get Vouchers
  • sevdesk.get_tag_by_id
    Get Tag By ID
  • sevdesk.get_tax_rules
    Get Tax Rules
  • sevdesk.get_part_by_id
    Get Part By ID
  • sevdesk.get_part_stock
    Get Part Stock
  • sevdesk.get_order_by_id
    Get Order By ID
  • sevdesk.get_credit_notes
    Get Credit Notes
  • sevdesk.get_invoice_poss
    Get Invoice Positions
  • sevdesk.get_part_unities
    Get Part Unities
+ 50 MORE

write

40

Create and change things. Allow, or ask the user first.

  • sevdesk.create_tag
    Create Tag
  • sevdesk.create_part
    Create Part
  • sevdesk.send_order_by
    Mark Order as Sent
  • sevdesk.create_contact
    Create Contact
  • sevdesk.update_contact
    Update Contact
  • sevdesk.create_contact2
    Create Contact (REST API)
  • sevdesk.send_invoice_by
    Send Invoice By
  • sevdesk.update_tag_by_id
    Update Tag By ID
  • sevdesk.update_part_by_id
    Update Part By ID
  • sevdesk.update_order_by_id
    Update Order By ID
  • sevdesk.send_credit_note_by
    Send Credit Note By
  • sevdesk.update_check_account
    Update Check Account
  • sevdesk.create_payment_method
    Create Payment Method
  • sevdesk.update_order_template
    Update Order Template
  • sevdesk.create_contact_address
    Create Contact Address
  • sevdesk.create_clearing_account
    Create Clearing Account
+ 24 MORE

destructive

16

Delete, cancel or archive. Ask first, or deny outright.

  • sevdesk.delete_contact
    Delete Contact
  • sevdesk.delete_tag_by_id
    Delete Tag By ID
  • sevdesk.delete_order_by_id
    Delete Order By ID
  • sevdesk.delete_payment_method
    Delete Payment Method
  • sevdesk.delete_order_pos_by_id
    Delete Order Position By ID
  • sevdesk.delete_credit_note_by_id
    Delete Credit Note By ID
  • sevdesk.delete_check_account_by_id
    Delete Check Account By ID
  • sevdesk.delete_contact_address_by_id
    Delete Contact Address By ID
  • sevdesk.delete_communication_way_by_id
    Delete Communication Way By ID
  • sevdesk.delete_accounting_contact_by_id
    Delete Accounting Contact By ID
  • sevdesk.delete_contact_custom_field_by_id
    Delete Contact Custom Field By ID
  • sevdesk.delete_private_transaction_rule_by_id
    Delete Private Transaction Rule By ID
  • sevdesk.delete_check_account_transaction_by_id
    Delete Check Account Transaction
  • sevdesk.delete_contact_custom_field_setting_by_id
    Delete Contact Custom Field Setting By ID
  • sevdesk.reset_voucher_state
    Reset Voucher State
  • sevdesk.reset_credit_note_to_open
    Reset Credit Note To Open
03 · HOW IT WORKS

Sevdesk in three steps.

  1. 01Your users connect SevdeskThey add their Sevdesk api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create Tag” can wait for the user, and “delete Contact” can be denied outright.
  3. 03Any agent can actYour agent calls Sevdesk through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('sevdesk', {
  read: 'allow',
  write: 'ask',        // create_tag
  destructive: 'deny',  // delete_contact
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How Sevdesk connects.

Users add their Sevdesk api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Sevdesk connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use Sevdesk from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More finance and accounting apps.

Stripe433 actions44API4 actionsAirwallex7 actionsAiwyn Tax10 actionsAltoviz67 actionsCoupa384 actionsZoho Books265 actionsMaxio177 actions
ALL FINANCE AND ACCOUNTING APPS →
07 · FAQ

Sevdesk and Arc0, answered.

Q01

Can I use Sevdesk with Claude, ChatGPT or Cursor?

Yes. Connect Sevdesk to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Sevdesk actions you allow.

Q02

How do users connect Sevdesk?

Users add their Sevdesk api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Sevdesk actions can my agent take?

122 in total: 66 read, 40 write and 16 destructive, such as “create Tag”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Sevdesk?

Yes. Actions like “delete Contact” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call Sevdesk too?

Yes. The same Sevdesk connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Sevdesk into your agent.

Your users connect Sevdesk once, under your brand. Your agent gets 122 actions behind your policies, with every call on the record.

Connect SevdeskBrowse all apps →

Free to build · MCP + REST · Audit log on every plan