Connectors · Accounting & finance

sevdesk MCP server for AI agents.

actionlake is an MCP gateway: one remote MCP server that connects Claude and other MCP clients to sevdesk and the rest of your systems. It gives your agent 153 sevdesk actions (76 reads, 63 writes and 14 that wait for a confirmation) and holds the sevdesk credential itself, so the agent never does. It paces sevdesk's limits and records every call.

Connect sevdesk free See pricing

100,000 free calls a month. No card, no email, no password: press Start a free sandbox on the next screen and keep the key it shows you.

claude mcp add --transport http actionlake https://connect.actionlake.com/mcp

153actionsin one signed file
76readlook, never change
63writecreate and update
14wait for a yesdestructive, confirmed first

Set up

Connect sevdesk in three steps.

01
Add actionlake to Claude.
Run the command once in Claude Code; its consent page can create a free sandbox: 100,000 calls a month, no card. In the Claude app, add a custom connector with the URL below and paste your key on the consent page. Creating a new sandbox from the Claude app is not yet tested by us.
https://connect.actionlake.com/mcp
02
Connect sevdesk.
API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead. actionlake stores what you paste write-only, sealed under your tenant's key.
- api_tokensevdesk API token: sevdesk > Settings > Users > (your user) > API token
```
account { op: "connections.requirements", service: "sevdesk" }
# free: exactly what to paste, and what is found for you
```

Make the first call. Check before a write.

Ask in plain words; Claude picks the action. Before anything changes, check validates the call and prices it, for free.

do    { action: "sevdesk.invoices.list" }# retrieve invoices · read · 1 upstream callcheck { action: "sevdesk.invoices.create", input: { … } }# free: inputs, permissions, cost and confirmations, nothing sent

sevdesk at a glance

Sign-in: API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead.
You provide: api_token
Limits we pace to: 10 calls a second, per connection
API covered: Sevdesk API v1 (OpenAPI 3.0)my.sevdesk.de/api/v1
Built from: sevdesk's documentation, read 23 October 2026api.sevdesk.de
Service file: Version 1.0.0, signed (Ed25519)
Cached reads: 66 of 76 reads, for up to 5 minutes; a write clears what it affects
Shared entities: 8, so ask can line sevdesk up with your other systems
Data: Processed and stored in Sydney, Australia. No US region yet

Capabilities

What an AI agent can do in sevdesk.

153 actions in 30 areas. Every one carries its effect, so a key can allow the reads and hold the rest.

76readlook, never change
63writecreate and update
14destructivewait for a confirmation

Invoices
18
6 read · 11 write · 1 destructive
Retrieve invoices · Create a new invoice · Find invoice by ID · Create invoice from order
Credit notes
16
3 read · 12 write · 1 destructive
Retrieve CreditNote · Create a new creditNote · Find creditNote by ID · Update an existing creditNote
Orders
14
6 read · 7 write · 1 destructive
Retrieve orders · Create a new order · Find order by ID · Update an existing order
Exports
10
8 read · 2 write · 0 destructive
Start DATEV CSV ZIP export · Start DATEV XML ZIP export · Export contact · Export creditNote
Contacts
9
6 read · 2 write · 1 destructive
Retrieve contacts · Create a new contact · Find contact by ID · Update an existing contact
Vouchers
8
2 read · 6 write · 0 destructive
Retrieve vouchers · Create a new voucher · Find voucher by ID · Update an existing voucher
Check accounts
7
3 read · 3 write · 1 destructive
Retrieve check accounts · Find check account by ID · Update an existing check account · Deletes a check account
Check account transactions
6
2 read · 3 write · 1 destructive
Retrieve transactions · Create a new transaction · Find check account transaction by ID · Update an existing check account transaction

22 more areas · 65 actions

Contact custom field settings 6
Accounting contacts 5
Communication ways 5
Contact addresses 5
Contact custom fields 5
Parts 5
Receipt guidance 5
Tags 5
Order positions 4
Reports 4
Private transaction rules 3
Doc server 2
Export progress 2
Communication way keys 1
Credit note positions 1
Export jobs 1
Invoice positions 1
Sev clients 1
Tag relations 1
Text placeholders 1
Tools 1
Voucher positions 1

Top actions

The sevdesk API, shaped for agents.

The ids your agent types, what each does, and the one name it shares with other systems. 40 of sevdesk's 40 action names are shared with at least one other connector, so an agent learns them once.

Action	What it does	Effect	Same name in
`sevdesk.invoices.list`Retrieve invoices	Retrieve invoices.	read	`finance.invoice.list`101 connectors
`sevdesk.orders.list`Retrieve orders	Retrieve orders.	read	`finance.quote.list`52 connectors
`sevdesk.contacts.list`Retrieve contacts	Retrieve contacts.	read	`crm.company.list`162 connectors
`sevdesk.vouchers.list`Retrieve vouchers	Retrieve vouchers.	read	`finance.expense.list`40 connectors
`sevdesk.check_accounts.list`Retrieve check accounts	Retrieve check accounts.	read	`finance.bank_account.list`35 connectors
`sevdesk.credit_notes.list`Retrieve CreditNote	Retrieve CreditNote.	read	`finance.credit_note.list`33 connectors
`sevdesk.tags.list`Retrieve tags	Retrieve tags.	read	`crm.tag.list`65 connectors
`sevdesk.invoices.create`Create a new invoice	Create a new invoice.	write	`finance.invoice.create`74 connectors
`sevdesk.orders.create`Create a new order	Create a new order.	write	`finance.quote.create`52 connectors
`sevdesk.vouchers.create`Create a new voucher	Create a new voucher.	write	`finance.expense.create`36 connectors
`sevdesk.contacts.create`Create a new contact	Create a new contact.	write	`crm.company.create`142 connectors
`sevdesk.orders.delete`Deletes an order	Deletes an order.	destructive	`finance.quote.delete`36 connectors

Try it

Prompts to paste into Claude.

Each one names the sevdesk actions it will call, so you know what it reads and what it changes before you send it.

Readread
Which sevdesk invoices are more than 30 days overdue? Group them by customer with the total owed.
callssevdesk.invoices.list
Writewrite
Create a new invoice in sevdesk. Show me exactly what you will send before you save it.
callssevdesk.invoices.create
Across systemsread
Which sevdesk companies have invoices in ConnectWise PSA, and how many each?
callssevdesk.contacts.listconnectwise_manage.invoices.list

Across your systems

sevdesk, joined to the rest of your business.

One ask fetches from sevdesk and another system, joins the rows on the same customer on our side, and hands your agent the answer, not every row.

Which sevdesk companies have invoices in ConnectWise PSA, and how many each?
sevdesk.contacts.list + connectwise_manage.invoices.list, on crm.company · ConnectWise PSA
Which sevdesk companies have tickets in HubSpot CRM, and how many each?
sevdesk.contacts.list + hubspot_crm.tickets.list, on crm.company · HubSpot CRM

Also mapped by other connectorscrm.company 227commerce.product 109finance.invoice 91crm.tag 47finance.quote 45finance.credit_note 28finance.expense 26finance.bank_account 25

ask

ask {  intent: "which sevdesk companies have invoices in ConnectWise PSA, and how many each",  steps: [    { action: "sevdesk.contacts.list", as: "co", input: {}, limit: 100, max_pages: 5 },    { action: "connectwise_manage.invoices.list", as: "inv", input: {}, limit: 100, max_pages: 5 },    { join: {        left: "co",        right: "inv",        on: "crm.company",        group_by: "co.name",        select: ["co.name", "count(inv.id) as invoices"]    } }  ]}

Example. Run it through check first: it validates the steps and prices them, and it is free.

Governance for sevdesk

Destructive actions wait for a yes.

14 sevdesk actions are destructive. These are all of them:

Deletes an ordersevdesk.orders.delete
Deletes a contactsevdesk.contacts.delete
Deletes an creditNotesevdesk.credit_notes.delete
Deletes a check accountsevdesk.check_accounts.delete
Deletes a tagsevdesk.tags.delete
Deletes a check account transactionsevdesk.check_account_transactions.delete
Cancel an invoice / Create cancellation invoicesevdesk.invoices.cancel
Deletes an order Positionsevdesk.order_positions.delete
Deletes a contact addresssevdesk.contact_addresses.delete
Deletes a communication waysevdesk.communication_ways.delete
Deletes an accounting contactsevdesk.accounting_contacts.delete
Delete a contact fieldsevdesk.contact_custom_fields.delete
Delete the rule by idsevdesk.private_transaction_rules.delete
Deletes a contact field settingsevdesk.contact_custom_field_settings.delete

A destructive action runs only with confirm: true. Under the human policy the agent cannot confirm for itself: the run stops until a named person approves, in the console or from a signed link in an email. The cap on a key is refused before the call is sent, never after.

dosevdesk.orders.deleteconfirm_policy: human

Deletes an order?

intent: the user asked me to deletes an order

run suspended · waiting for a named person · key sevdesk-agent cannot confirm itself

In the console, or from an emailed signed link.

a key for this connector

account {  op: "keys.create", name: "sevdesk-agent",  allowed_actions: ["sevdesk.*"], cap_calls: 2000,  confirm_policy: "human_for_writes",  approval_rules: [    { match: "sevdesk.orders.delete", approver: "[email protected]" },    { match: "sevdesk.contacts.delete", approver: "[email protected]" },    { match: "sevdesk.credit_notes.delete", approver: "[email protected]" }  ]}

Illustrative. Scoped to sevdesk only, capped at 2,000 upstream calls, every write confirmed, and the destructive ones approved by a named person.

Cost

What sevdesk costs on actionlake.

Every sevdesk action is one upstream call, the only thing actionlake bills. Searching, check, cost, account and any call sevdesk refused with 401, 403, 429 or a 5xx are free. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

1upstream call per actionall 153 sevdesk actions
153actions pageeach page of a long list is one call
66reads can be cacheda cache hit costs nothing
100,000calls a month, freepaid plans from US$49 a month for 250,000

See pricing

Action index

Every sevdesk action.

153 actions by area: the id your agent calls, what it does, and its effect.

Invoices18

sevdesk.invoices.book_amountBook an invoicewrite
sevdesk.invoices.cancelCancel an invoice / Create cancellation invoicedestructive
sevdesk.invoices.change_parameterUpdate an invoice templatewrite
sevdesk.invoices.createCreate a new invoicewrite
sevdesk.invoices.create_from_orderCreate invoice from orderwrite
sevdesk.invoices.create_reminderCreate invoice reminderwrite
sevdesk.invoices.enshrineEnshrinewrite
sevdesk.invoices.getFind invoice by IDread
sevdesk.invoices.get_is_partially_paidCheck if an invoice is already partially paidread
sevdesk.invoices.get_pdfRetrieve pdf document of an invoiceread
sevdesk.invoices.get_xmlRetrieve XML of an e-invoiceread
sevdesk.invoices.listRetrieve invoicesread
sevdesk.invoices.list_positionsFind invoice positionsread
sevdesk.invoices.mark_sentMark invoice as sentwrite
sevdesk.invoices.renderRender the pdf document of an invoicewrite
sevdesk.invoices.reset_to_draftReset status to draftwrite
sevdesk.invoices.reset_to_openReset status to openwrite
sevdesk.invoices.send_via_emailSend invoice via emailwrite

Credit notes16

sevdesk.credit_notes.book_amountBook a credit notewrite
sevdesk.credit_notes.change_parameterUpdate an of credit note templatewrite
sevdesk.credit_notes.createCreate a new creditNotewrite
sevdesk.credit_notes.create_from_invoiceCreates a new creditNote from an invoicewrite
sevdesk.credit_notes.create_from_voucherCreates a new creditNote from a voucherwrite
sevdesk.credit_notes.deleteDeletes an creditNotedestructive
sevdesk.credit_notes.enshrineEnshrinewrite
sevdesk.credit_notes.getFind creditNote by IDread
sevdesk.credit_notes.get_pdfRetrieve pdf document of a credit noteread
sevdesk.credit_notes.listRetrieve CreditNoteread
sevdesk.credit_notes.mark_sentMark credit note as sentwrite
sevdesk.credit_notes.reset_to_draftReset status to draftwrite
sevdesk.credit_notes.reset_to_openReset status to openwrite
sevdesk.credit_notes.send_by_printingSend credit note by printingwrite
sevdesk.credit_notes.send_via_emailSend credit note via emailwrite
sevdesk.credit_notes.updateUpdate an existing creditNotewrite

Orders14

sevdesk.orders.change_parameterUpdate an order templatewrite
sevdesk.orders.createCreate a new orderwrite
sevdesk.orders.create_contract_noteCreate contract note from orderwrite
sevdesk.orders.create_packing_listCreate packing list from orderwrite
sevdesk.orders.deleteDeletes an orderdestructive
sevdesk.orders.getFind order by IDread
sevdesk.orders.get_pdfRetrieve pdf document of an orderread
sevdesk.orders.listRetrieve ordersread
sevdesk.orders.list_discountsFind order discountsread
sevdesk.orders.list_positionsFind order positionsread
sevdesk.orders.list_related_objectsFind related objectsread
sevdesk.orders.mark_sentMark order as sentwrite
sevdesk.orders.send_via_emailSend order via emailwrite
sevdesk.orders.updateUpdate an existing orderwrite

Exports10

sevdesk.exports.contact_list_csvExport contactread
sevdesk.exports.create_datev_csv_zip_jobStart DATEV CSV ZIP exportwrite
sevdesk.exports.create_datev_xml_zip_jobStart DATEV XML ZIP exportwrite
sevdesk.exports.credit_note_csvExport creditNoteread
sevdesk.exports.datev_csv_legacyExport datevread
sevdesk.exports.invoice_csvExport invoiceread
sevdesk.exports.invoice_zipExport Invoice as zipread
sevdesk.exports.transactions_csvExport transactionread
sevdesk.exports.voucher_list_csvExport voucher as zipread
sevdesk.exports.voucher_zipExport voucher zipread

Contacts9

sevdesk.contacts.check_customer_number_availabilityCheck if a customer number is availableread
sevdesk.contacts.createCreate a new contactwrite
sevdesk.contacts.deleteDeletes a contactdestructive
sevdesk.contacts.find_by_custom_field_valueFind contacts by custom field valueread
sevdesk.contacts.getFind contact by IDread
sevdesk.contacts.get_next_customer_numberGet next free customer numberread
sevdesk.contacts.get_tabs_item_countGet number of all itemsread
sevdesk.contacts.listRetrieve contactsread
sevdesk.contacts.updateUpdate an existing contactwrite

Vouchers8

sevdesk.vouchers.book_amountBook a voucherwrite
sevdesk.vouchers.createCreate a new voucherwrite
sevdesk.vouchers.enshrineEnshrinewrite
sevdesk.vouchers.getFind voucher by IDread
sevdesk.vouchers.listRetrieve vouchersread
sevdesk.vouchers.reset_to_draftReset status to draftwrite
sevdesk.vouchers.reset_to_openReset status to openwrite
sevdesk.vouchers.updateUpdate an existing voucherwrite

Check accounts7

sevdesk.check_accounts.create_clearing_accountCreate a new clearing accountwrite
sevdesk.check_accounts.create_file_import_accountCreate a new file import accountwrite
sevdesk.check_accounts.deleteDeletes a check accountdestructive
sevdesk.check_accounts.getFind check account by IDread
sevdesk.check_accounts.get_balance_at_dateGet the balance at a given dateread
sevdesk.check_accounts.listRetrieve check accountsread
sevdesk.check_accounts.updateUpdate an existing check accountwrite

Check account transactions6

sevdesk.check_account_transactions.createCreate a new transactionwrite
sevdesk.check_account_transactions.deleteDeletes a check account transactiondestructive
sevdesk.check_account_transactions.enshrineEnshrinewrite
sevdesk.check_account_transactions.getFind check account transaction by IDread
sevdesk.check_account_transactions.listRetrieve transactionsread
sevdesk.check_account_transactions.updateUpdate an existing check account transactionwrite

Contact custom field settings6

sevdesk.contact_custom_field_settings.createCreate contact field settingwrite
sevdesk.contact_custom_field_settings.deleteDeletes a contact field settingdestructive
sevdesk.contact_custom_field_settings.getFind contact field setting by IDread
sevdesk.contact_custom_field_settings.get_reference_countReceive count referenceread
sevdesk.contact_custom_field_settings.listRetrieve contact field settingsread
sevdesk.contact_custom_field_settings.updateUpdate contact field settingwrite

Accounting contacts5

sevdesk.accounting_contacts.createCreate a new accounting contactwrite
sevdesk.accounting_contacts.deleteDeletes an accounting contactdestructive
sevdesk.accounting_contacts.getFind accounting contact by IDread
sevdesk.accounting_contacts.listRetrieve accounting contactread
sevdesk.accounting_contacts.updateUpdate an existing accounting contactwrite

Communication ways5

sevdesk.communication_ways.createCreate a new contact communication waywrite
sevdesk.communication_ways.deleteDeletes a communication waydestructive
sevdesk.communication_ways.getFind communication way by IDread
sevdesk.communication_ways.listRetrieve communication waysread
sevdesk.communication_ways.updateUpdate an existing communication waywrite

Contact addresses5

sevdesk.contact_addresses.createCreate a new contact addresswrite
sevdesk.contact_addresses.deleteDeletes a contact addressdestructive
sevdesk.contact_addresses.getFind contact address by IDread
sevdesk.contact_addresses.listRetrieve contact addressesread
sevdesk.contact_addresses.updateUpdate an existing contact addresswrite

Contact custom fields5

sevdesk.contact_custom_fields.createCreate contact fieldwrite
sevdesk.contact_custom_fields.deleteDelete a contact fielddestructive
sevdesk.contact_custom_fields.getRetrieve contact fieldsread
sevdesk.contact_custom_fields.listRetrieve contact fieldsread
sevdesk.contact_custom_fields.updateUpdate a contact fieldwrite

Parts5

sevdesk.parts.createCreate a new partwrite
sevdesk.parts.getFind part by IDread
sevdesk.parts.get_stockGet stock of a partread
sevdesk.parts.listRetrieve partsread
sevdesk.parts.updateUpdate an existing partwrite

Receipt guidance5

sevdesk.receipt_guidance.get_for_account_numberGet guidance by account numberread
sevdesk.receipt_guidance.list_all_accountsGet all account guidesread
sevdesk.receipt_guidance.list_for_expenseGet guidance for expense accountsread
sevdesk.receipt_guidance.list_for_revenueGet guidance for revenue accountsread
sevdesk.receipt_guidance.list_for_tax_ruleGet guidance by Tax Ruleread

Tags5

sevdesk.tags.createCreate a new tagwrite
sevdesk.tags.deleteDeletes a tagdestructive
sevdesk.tags.getFind tag by IDread
sevdesk.tags.listRetrieve tagsread
sevdesk.tags.updateUpdate tagwrite

Order positions4

sevdesk.order_positions.deleteDeletes an order Positiondestructive
sevdesk.order_positions.getFind order position by IDread
sevdesk.order_positions.listRetrieve order positionsread
sevdesk.order_positions.updateUpdate an existing order positionwrite

Reports4

sevdesk.reports.contact_listExport contact listread
sevdesk.reports.invoice_listExport invoice listread
sevdesk.reports.order_listExport order listread
sevdesk.reports.voucher_listExport voucher listread

Private transaction rules3

sevdesk.private_transaction_rules.createCreate a new rulewrite
sevdesk.private_transaction_rules.deleteDelete the rule by iddestructive
sevdesk.private_transaction_rules.listList existing rulesread

Doc server2

sevdesk.doc_server.list_letterpapersRetrieve letterpapersread
sevdesk.doc_server.list_templatesRetrieve templatesread

Export progress2

sevdesk.export_progress.generate_download_hashGenerate download hashread
sevdesk.export_progress.getGet progressread

Communication way keys1

sevdesk.communication_way_keys.listRetrieve communication way keysread

Credit note positions1

sevdesk.credit_note_positions.listRetrieve creditNote positionsread

Export jobs1

sevdesk.export_jobs.get_download_infoGet job download inforead

Invoice positions1

sevdesk.invoice_positions.listRetrieve InvoicePosread

Sev clients1

sevdesk.sev_clients.update_export_configUpdate export configwrite

Tag relations1

sevdesk.tag_relations.listRetrieve tag relationsread

Text placeholders1

sevdesk.text_placeholders.listRetrieve Placeholdersread

Tools1

sevdesk.tools.get_bookkeeping_system_versionRetrieve bookkeeping system versionread

Voucher positions1

sevdesk.voucher_positions.listRetrieve voucher positionsread

Questions

The sevdesk MCP server, answered.

Is there a sevdesk MCP server for Claude?

Yes. actionlake is an MCP gateway: a remote MCP server that gives Claude, or another MCP client, 153 sevdesk actions across invoices, credit notes, orders and exports, through the same eight tools it uses for every other connector. actionlake is independent; it is not made or endorsed by sevdesk.

What do I need to connect sevdesk?

Sevdesk API token: sevdesk > Settings > Users > (your user) > API token. The free call account { op: "connections.requirements", service: "sevdesk" } lists exactly what to paste.

Can an AI agent delete or change things in sevdesk?

Only if its key allows it, and only with an explicit confirmation. 14 sevdesk actions are destructive, including deletes an order, deletes a contact and deletes an creditNote. Each runs only with confirm: true. Under the human confirm policy, or an approval rule on the key, the run waits until a named person approves it.

Will an AI agent use up my sevdesk API limit?

actionlake paces every call to the limits in the sevdesk service file: 10 calls a second per connection. Repeated reads are answered from cache (66 sevdesk actions can be), which never reaches sevdesk.

What does a sevdesk action cost?

One upstream call, the only unit actionlake bills. A list that pages bills one call per page (153 sevdesk actions page). Cache hits, searches, dry runs and calls sevdesk refused with 401, 403, 429 or a 5xx are free. The Free plan includes 100,000 calls a month with no card. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

Which sevdesk API does it cover?

The sevdesk API v1 (OpenAPI 3.0) at my.sevdesk.de/api/v1. It is built from sevdesk's documentation as read on 23 October 2026. 153 actions in 30 areas, each one in the signed service file (version 1.0.0).

Can I combine sevdesk with my other systems?

Yes. ask joins sevdesk to ConnectWise PSA or HubSpot CRM on the same customer and returns the answer rather than every row. sevdesk maps crm.company, which 227 other connectors also map.

Does actionlake keep my sevdesk data, and where?

actionlake processes and stores data in Sydney, Australia; there is no US region yet. Reads may be cached for up to 5 minutes, and a write clears the reads it affects. Each run's request and response is kept, sealed, for your plan's trace window: 1 day on Free, 3 days on Starter, 7 days on Pro, 14 days on Team, 30 days on Business and 30 days on Enterprise. Your sevdesk credential is sealed under your tenant's key, never logged and never returned. Your traffic is not used to train models.

Which AI clients can use it?

Claude Code, tested by us end to end, and the Claude app as a custom connector, tested by us with an existing key. Other MCP clients that support remote servers over Streamable HTTP (MCP revisions 2025-06-18 and 2025-11-25) and OAuth dynamic client registration, or a bearer header, should connect the same way; we have not tested them. Or plain REST, under the same action names.

Give your agent sevdesk today.

Connect sevdesk free See pricing

Start free - 100,000 calls/month, no card. No signup. Hard caps on every key. Cached answers are free.

sevdesk MCP server for AI agents.

Connect sevdesk in three steps.

Add actionlake to Claude.

Connect sevdesk.

Make the first call. Check before a write.

What an AI agent can do in sevdesk.

Invoices

Credit notes

Orders

Exports

Contacts

Vouchers

Check accounts

Check account transactions