io.usefulapi/sevdesk
REMOTE · SEVDESK.USEFULAPI.IO · SCANNED OCT 4
Look up contacts, invoices, vouchers, orders, bank transactions and parts, and create drafts.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security89
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability69
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 3802 tokens (~190/item across 20 items; 20 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 20 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 20 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the io.usefulapi/sevdesk MCP server?
io.usefulapi/sevdesk is a hosted endpoint at https://sevdesk.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · sevdesk.usefulapi.io
claude mcp add --transport http io-usefulapi-sevdesk 'https://sevdesk.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-sevdesk": {
"url": "https://sevdesk.usefulapi.io/mcp"
}
}
} {
"servers": {
"io-usefulapi-sevdesk": {
"type": "http",
"url": "https://sevdesk.usefulapi.io/mcp"
}
}
} [mcp_servers.io-usefulapi-sevdesk] url = "https://sevdesk.usefulapi.io/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"io-usefulapi-sevdesk": {
"type": "remote",
"url": "https://sevdesk.usefulapi.io/mcp",
"enabled": true
}
}
} openclaw mcp add io-usefulapi-sevdesk --url 'https://sevdesk.usefulapi.io/mcp' --transport streamable-http
mcp_servers:
io-usefulapi-sevdesk:
url: "https://sevdesk.usefulapi.io/mcp" {
"McpServers": {
"io-usefulapi-sevdesk": {
"Transport": "http",
"Url": "https://sevdesk.usefulapi.io/mcp"
}
}
} assistant mcp add io-usefulapi-sevdesk -t streamable-http -u 'https://sevdesk.usefulapi.io/mcp'
{
"mcpServers": {
"io-usefulapi-sevdesk": {
"type": "http",
"url": "https://sevdesk.usefulapi.io/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 3 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 2 Oct 26 0
- Server version: 1.3.0 → 1.5.1 functional
- 1 Oct 26 +5
- HTTPS: unverified → pass ▲ security
- Stability: unverified → 0.03 ▲ functional
- Server version: 1.0.0 → 1.3.0 functional
- 30 Sept 26 +52
- Authorization: unverified → pass ▲ security
- Injection markers: unverified → pass ▲ security
- Transport: fail → pass ▲ security
- First check of Judged manipulation: pass security
- First check of Authorization: partial security
- MCP protocol: unverified → fail ▼ functional
- Tool coverage: unverified → 100 ▲ functional
- First check of Schema quality: fail functional
- First check of Schema quality: excellent functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: fail functional
- First check of Tool coverage: 100 functional
- 29 Sept 26 18
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Oct 2026 · Probed https://sevdesk.usefulapi.io/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=usefulapi.io | CN=WE1,O=Google Trust Services,C=US | 13 Sept 2026 | 12 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | d9be3287b0fde9630e825ba1f79bff3f |
| SANs: usefulapi.io, *.usefulapi.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of sevdesk.usefulapi.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| usefulapi.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer realm="OAuth", resource_metadata="https://sevdesk.usefulapi.io/.well-known/oauth-protected-resource/mcp"
Bearer realm="OAuth", resource_metadata="https://sevdesk.usefulapi.io/.well-known/oauth-protected-resource/mcp"Protected resource metadata
| Document | https://sevdesk.usefulapi.io/.well-known/oauth-protected-resource/mcp |
|---|---|
| Retrieved | Yes |
| Resource | https://sevdesk.usefulapi.io/mcp |
| Authorisation server | https://sevdesk.usefulapi.io |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://sevdesk.usefulapi.io/mcp | Verified | 200 | |
| http (plaintext) | http://sevdesk.usefulapi.io/mcp | HTTPS enforced | 301 | https://sevdesk.usefulapi.io/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
sevdesk_add_communication_way Add an email, phone or website to a contact ~151
Attach an email address, phone/mobile number or website to a contact. key_id labels it (2 Arbeit/work is a good default; see sevdesk_list_communication_way_keys). sevdesk: POST /CommunicationWay.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | yes | The contact's numeric id. |
| key_id | integer | – | Communication way key id (1 Privat, 2 Arbeit, 3 Fax, 4 Mobil, 8 Rechnungsadresse). Default 2. |
| main | boolean | – | Make this the contact's main communication way of its type. |
| type | string | yes | What kind of value this is. |
| value | string | yes | The email address, number or URL. |
No output schema declared.
No examples provided.
sevdesk_create_contact Create a contact ~263
Create a contact. Give `name` for an organisation, or `surename`/`familyname` for a person. Addresses and emails are separate (use sevdesk_add_communication_way). sevdesk: POST /Contact.
| Name | Type | Req | Description |
|---|---|---|---|
| category_id | integer | yes | Required category: 2 Supplier, 3 Customer, 4 Partner, 28 Prospect customer. |
| customer_number | string | – | Customer number. Omit to let sevdesk leave it unset. |
| default_time_to_pay | integer | – | Default payment term in days for this contact's invoices. |
| description | string | – | Free-text description. |
| familyname | string | – | Last name of a PERSON. |
| name | string | – | Organisation name. Setting it makes the contact an ORGANISATION — leave empty for a person. |
| parent_id | integer | – | For a person: the id of the organisation they belong to. |
| status | – | – | 100 Lead, 500 Pending, 1000 Active. |
| surename | string | – | First name of a PERSON (sevdesk's field is really spelled 'surename'). |
| tax_number | string | – | Tax number (Steuernummer). |
| vat_number | string | – | VAT id (USt-IdNr.). |
No output schema declared.
No examples provided.
sevdesk_create_draft_invoice Create a draft invoice ~556
Create a normal invoice (type RE) with its line items, ALWAYS saved as a DRAFT (status 100): it is not sent, not booked and stays editable in sevdesk. contact_person_id is the sevdesk USER responsible for it — copy contactPerson.id from any existing invoice (sevdesk_get_invoice). Bookkeeping 2.0 accounts use tax_rule_id (1 = taxable sales in Germany, the usual choice); 1.0 accounts pass tax_type instead (check sevdesk_get_bookkeeping_system_version). sevdesk: POST /Invoice/Factory/saveInvoice.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | Complete recipient address with line breaks. Omit to leave it empty. |
| address_country_id | integer | – | sevdesk StaticCountry id of the billing address (1 = Germany). Default 1. |
| contact_id | integer | yes | The contact (customer)'s numeric id. |
| contact_person_id | integer | yes | Id of the sevdesk user (SevUser) acting as contact person — e.g. contactPerson.id of an existing invoice. |
| currency | string | – | ISO-4217 currency code. Default EUR. |
| customer_internal_note | string | – | Reference / order number field. |
| delivery_date | string | – | Delivery / service date as dd.mm.yyyy (must not be after invoice_date for a normal invoice). |
| foot_text | string | – | Text below the line items (some HTML allowed). |
| head_text | string | – | Text above the line items (some HTML allowed). |
| header | string | – | Invoice header/title line. |
| invoice_date | string | yes | Invoice date as dd.mm.yyyy. |
| positions | array | yes | Line items (at least one). |
| show_net | boolean | – | If true (default), position prices are net. |
| small_settlement | boolean | – | True if the account uses the small-business scheme (no VAT). |
| tax_rule_id | string | – | Bookkeeping 2.0 VAT rule id. 1 taxable sales (Umsatzsteuerpflichtige Umsätze), 2 exports, 3 intra-EU supplies, 4 tax-free §4 UStG, 5 reverse charge §13b, 11 small business §19 (Kleinunternehmer), 17… |
| tax_text | string | – | VAT text printed on the invoice. Default 'Umsatzsteuer 19%'. |
| tax_type | string | – | Bookkeeping 1.0 only — leave unset on 2.0 accounts. |
| time_to_pay | integer | – | Payment term in days. |
No output schema declared.
No examples provided.
sevdesk_get_bookkeeping_system_version Get the bookkeeping system version ~66
Return whether the account runs sevdesk bookkeeping 1.0 or 2.0 (2.0 uses taxRule instead of taxType on invoices). Also a cheap way to confirm the API token works. sevdesk: GET /Tools/bookkeepingSystemVersion.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sevdesk_get_check_account_balance Get a payment account's balance at a date ~106
Balance of one check account as the sum of every transaction sevdesk knows up to and including the given date. May differ from the real bank balance if older transactions were never imported. sevdesk: GET /CheckAccount/{checkAccountId}/getBalanceAtDate.
| Name | Type | Req | Description |
|---|---|---|---|
| check_account_id | integer | yes | The check account's numeric id. |
| date | string | yes | Consider transactions up to this date (YYYY-MM-DD, inclusive to 23:59:59). |
No output schema declared.
No examples provided.
sevdesk_get_contact Get one contact ~62
Fetch a single contact by id. sevdesk: GET /Contact/{contactId}.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | yes | The contact's numeric id. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
No output schema declared.
No examples provided.
sevdesk_get_invoice Get one invoice ~73
Fetch a single invoice by id — totals, status, dates, contact and contact person. sevdesk: GET /Invoice/{invoiceId}.
| Name | Type | Req | Description |
|---|---|---|---|
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| invoice_id | integer | yes | The invoice's numeric id. |
No output schema declared.
No examples provided.
sevdesk_get_invoice_positions Get an invoice's line items ~121
List the positions (line items) of one invoice: name, quantity, price, tax rate, sums. sevdesk: GET /Invoice/{invoiceId}/getPositions.
| Name | Type | Req | Description |
|---|---|---|---|
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| invoice_id | integer | yes | The invoice's numeric id. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| offset | integer | – | Number of entries to skip, for paging. |
No output schema declared.
No examples provided.
sevdesk_get_voucher Get one voucher ~66
Fetch a single voucher (receipt) by id. sevdesk: GET /Voucher/{voucherId}.
| Name | Type | Req | Description |
|---|---|---|---|
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| voucher_id | integer | yes | The voucher's numeric id. |
No output schema declared.
No examples provided.
sevdesk_list_check_accounts List payment accounts ~131
List check accounts — the bank accounts, cash registers and clearing accounts sevdesk tracks payments on, with IBAN, type and sync status. sevdesk: GET /CheckAccount.
| Name | Type | Req | Description |
|---|---|---|---|
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| offset | integer | – | Number of entries to skip, for paging. |
No output schema declared.
No examples provided.
sevdesk_list_communication_way_keys List communication way keys ~70
List the labels a communication way can carry (1 Privat, 2 Arbeit, 3 Fax, 4 Mobil, 6 Autobox, 7 Newsletter, 8 Rechnungsadresse). Needed for sevdesk_add_communication_way. sevdesk: GET /CommunicationWayKey.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sevdesk_list_communication_ways List contact emails, phones and websites ~165
List communication ways (email addresses, phone and mobile numbers, websites), optionally for one contact. sevdesk: GET /CommunicationWay.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | – | Only this contact's communication ways. |
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| main_only | boolean | – | If true, only the main communication way(s). |
| offset | integer | – | Number of entries to skip, for paging. |
| type | string | – | Only this type. |
No output schema declared.
No examples provided.
sevdesk_list_contacts List contacts ~262
List contacts (customers, suppliers, partners, prospects). By default sevdesk returns only organisations; set include_persons to also get individual persons. sevdesk: GET /Contact.
| Name | Type | Req | Description |
|---|---|---|---|
| category_id | integer | – | Only contacts in this category: 2 Supplier, 3 Customer, 4 Partner, 28 Prospect customer. |
| city | string | – | Only contacts in this city. |
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| customer_number | string | – | Only the contact with this customer number. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| include_persons | boolean | – | If true, return organisations AND persons (sevdesk depth=1). Default: organisations only. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| name | string | – | Only contacts whose name, first name or last name matches. |
| offset | integer | – | Number of entries to skip, for paging. |
| parent_id | integer | – | Only persons belonging to this parent organisation's id. |
| zip | string | – | Only contacts with this ZIP code. |
No output schema declared.
No examples provided.
sevdesk_list_credit_notes List credit notes ~237
List credit notes (Gutschriften), filterable by status, number, date range and contact. Status: 100 draft, 200 open/delivered, 750 partially paid, 1000 paid. sevdesk: GET /CreditNote.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | – | Only credit notes for this contact id. |
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| credit_note_number | string | – | Only the credit note with this number. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| end_date | integer | – | Only credit notes dated on or before this, as a Unix timestamp in seconds. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| offset | integer | – | Number of entries to skip, for paging. |
| start_date | integer | – | Only credit notes dated on or after this, as a Unix timestamp in seconds. |
| status | string | – | Only credit notes with this status code. |
No output schema declared.
No examples provided.
sevdesk_list_invoices List invoices ~282
List invoices, filterable by status, number, date range and contact. Status: 50 deactivated recurring, 100 draft, 200 open/due, 750 partially paid, 1000 paid. sevdesk: GET /Invoice.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | – | Only invoices for this contact id. |
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| delinquent | boolean | – | If true, only overdue (delinquent) invoices. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| end_date | integer | – | Only invoices dated on or before this, as a Unix timestamp in seconds. |
| invoice_number | string | – | Only the invoice with this number. |
| invoice_type | string | – | Only this type: RE normal, WKR recurring, SR cancellation, MA reminder, TR partial, AR advance, ER final. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| offset | integer | – | Number of entries to skip, for paging. |
| start_date | integer | – | Only invoices dated on or after this, as a Unix timestamp in seconds. |
| status | string | – | Only invoices with this status code. |
No output schema declared.
No examples provided.
sevdesk_list_orders List orders and quotes ~241
List orders — quotes (Angebote), order confirmations and delivery notes — filterable by status, number, date range and contact. Status: 100 draft, 200 delivered, 300 rejected, 500 accepted, 750 partially calculated, 1000 calculated. sevdesk: GET /Order.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | – | Only orders for this contact id. |
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| end_date | integer | – | Only orders dated on or before this, as a Unix timestamp in seconds. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| offset | integer | – | Number of entries to skip, for paging. |
| order_number | string | – | Only the order with this number. |
| start_date | integer | – | Only orders dated on or after this, as a Unix timestamp in seconds. |
| status | string | – | Only orders with this status code. |
No output schema declared.
No examples provided.
sevdesk_list_parts List parts (products) ~149
List parts — the products and services in the sevdesk inventory, with prices, tax rate and stock. sevdesk: GET /Part.
| Name | Type | Req | Description |
|---|---|---|---|
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| name | string | – | Only parts with this name. |
| offset | integer | – | Number of entries to skip, for paging. |
| part_number | string | – | Only the part with this part number. |
No output schema declared.
No examples provided.
sevdesk_list_transactions List bank transactions ~292
List check-account transactions (bank payments in and out), filterable by account, booking state, date range, payee/payer and purpose. sevdesk: GET /CheckAccountTransaction.
| Name | Type | Req | Description |
|---|---|---|---|
| check_account_id | integer | – | Only transactions on this check account id. |
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| end_date | string | – | Only transactions up to this date (ISO 8601). |
| is_booked | boolean | – | If true, only transactions already booked against a document. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| offset | integer | – | Number of entries to skip, for paging. |
| only_credit | boolean | – | If true, only incoming (credit) transactions. |
| only_debit | boolean | – | If true, only outgoing (debit) transactions. |
| payee_payer_name | string | – | Only transactions with this payee / payer name. |
| payment_purpose | string | – | Only transactions with this payment purpose (Verwendungszweck). |
| start_date | string | – | Only transactions from this date on (ISO 8601, e.g. 2026-01-01). |
No output schema declared.
No examples provided.
sevdesk_list_vouchers List vouchers (receipts) ~255
List vouchers — receipts and incoming/outgoing bills. Status: 50 draft, 100 unpaid/due, 1000 paid. credit_debit C = credit (revenue), D = debit (expense). sevdesk: GET /Voucher.
| Name | Type | Req | Description |
|---|---|---|---|
| contact_id | integer | – | Only vouchers for this contact id. |
| count_all | boolean | – | If true, the response also carries `total`, the full match count. |
| credit_debit | string | – | C for credit (revenue) or D for debit (expense) vouchers. |
| description_like | string | – | Only vouchers whose description contains this text. |
| embed | string | – | Comma-separated nested resources to expand inline, e.g. contact,category. |
| end_date | integer | – | Only vouchers dated on or before this, as a Unix timestamp in seconds. |
| limit | integer | – | Max entries to return, 1-1000 (sevdesk suggests 10-100). |
| offset | integer | – | Number of entries to skip, for paging. |
| start_date | integer | – | Only vouchers dated on or after this, as a Unix timestamp in seconds. |
| status | string | – | Only vouchers with this status code. |
No output schema declared.
No examples provided.
sevdesk_update_contact Update a contact ~254
Update fields on an existing contact; only the fields you pass are sent. sevdesk: PUT /Contact/{contactId}.
| Name | Type | Req | Description |
|---|---|---|---|
| category_id | integer | – | Move to category: 2 Supplier, 3 Customer, 4 Partner, 28 Prospect. |
| contact_id | integer | yes | The contact's numeric id. |
| customer_number | string | – | Customer number. Omit to let sevdesk leave it unset. |
| default_time_to_pay | integer | – | Default payment term in days for this contact's invoices. |
| description | string | – | Free-text description. |
| familyname | string | – | Last name of a PERSON. |
| name | string | – | Organisation name. Setting it makes the contact an ORGANISATION — leave empty for a person. |
| parent_id | integer | – | For a person: the id of the organisation they belong to. |
| status | – | – | 100 Lead, 500 Pending, 1000 Active. |
| surename | string | – | First name of a PERSON (sevdesk's field is really spelled 'surename'). |
| tax_number | string | – | Tax number (Steuernummer). |
| vat_number | string | – | VAT id (USt-IdNr.). |
No output schema declared.
No examples provided.
What is the io.usefulapi/sevdesk MCP server?
io.usefulapi/sevdesk is an MCP server listed in the public MCP registry as io.usefulapi/sevdesk. Look up contacts, invoices, vouchers, orders, bank transactions and parts, and create drafts. This page covers its hosted endpoint (https://sevdesk.usefulapi.io/mcp).
Is the io.usefulapi/sevdesk MCP server safe to use?
io.usefulapi/sevdesk scores 76 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.usefulapi/sevdesk MCP server expose?
io.usefulapi/sevdesk exposes 20 tools: sevdesk_get_bookkeeping_system_version, sevdesk_list_contacts, sevdesk_get_contact, sevdesk_list_communication_ways, sevdesk_list_communication_way_keys, and 15 more. Their descriptions and schemas cost roughly 3,802 tokens of context every time the server is loaded.
Does the io.usefulapi/sevdesk MCP server require authentication?
Yes. io.usefulapi/sevdesk asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the io.usefulapi/sevdesk MCP server still maintained?
io.usefulapi/sevdesk is still listed as active in the MCP registry. We last reached this channel on 4 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.