Lexware through One
Lexware is a business software platform that provides tools for accounting, invoicing, payroll, tax preparation, and financial administration, allowing small businesses and self-employed professionals to manage core back-office processes and integrate operational data into their workflows.
One exposes Lexware through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.
How to run an action
- Find the action in the table below, or call
search_one_platform_actions with platform lexware if it is not listed.
- Call
get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
- Call
execute_one_action with parameters copied from that knowledge.
Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.
Before you start
Call list_one_integrations once and confirm Lexware is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.
Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.
Before a write
Creates, updates, deletes and sends land on a real Lexware account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.
Actions
Vouchers
| Action |
Method |
Path |
Action id |
| Filter Vouchers by Voucher Number |
GET |
/v1/vouchers |
conn_mod_def::GLWE29p_95g::HAvEa5IbR8KoNa_MGDOwSA |
| Get a Voucher by ID |
GET |
/v1/vouchers/{{id}} |
conn_mod_def::GLWE3HSY2ag::zRrEcQUaQoGWHKy5xmZyWg |
| List Vouchers |
GET |
/v1/voucherlist |
conn_mod_def::GLWE2_9ok1g::GLbkZB_iT06RN_cwnou-kw |
| Create a Voucher |
POST |
/v1/vouchers |
conn_mod_def::GLWE28qqHnA::IKKZaWzPQ1ePBrjocmLk0A |
| Upload a File to a Voucher |
POST |
/v1/vouchers/{{id}}/files |
conn_mod_def::GLWE3ILZ8aA::RXE73PIoQr-3MhbVB8tOYQ |
Articles
| Action |
Method |
Path |
Action id |
| Get an Article |
GET |
/v1/articles/{{id}} |
conn_mod_def::GLWE1pxQIQA::PSdueV2EQKqZkKc6orcS2Q |
| List Articles |
GET |
/v1/articles |
conn_mod_def::GLWE1pviW3A::rx4JWOnySCeAmGSBbKju9A |
| Create an Article |
POST |
/v1/articles |
conn_mod_def::GLWE1p1vCjg::_5FLNz6ISOKH8Ett05mztw |
| Update an Article |
PUT |
/v1/articles/{{id}} |
conn_mod_def::GLWE1rODsFg::2jMAbGdgTseiZjPCDEy0Lg |
CreditNotes
| Action |
Method |
Path |
Action id |
| Download a Credit Note Document File ID |
GET |
/v1/credit-notes/{{id}}/document |
conn_mod_def::GLWE18fUQtg::a_riPo84TBudzlC5SYpDeg |
| Download a Credit Note File |
GET |
/v1/credit-notes/{{id}}/file |
conn_mod_def::GLWE1y0sEUg::9cFnX9TXTpGXF8bxjzs2Gg |
| Get a Credit Note by ID |
GET |
/v1/credit-notes/{{id}} |
conn_mod_def::GLWE18ZzDPg::7dUIxn_cRQaF0u_bWdpMfg |
| Create Credit Notes |
POST |
/v1/credit-notes |
conn_mod_def::GLWE1zYsREg::F2ZbyMKjSKeBKa1Q5GPq8Q |
DeliveryNotes
| Action |
Method |
Path |
Action id |
| Download a Delivery Note Document File ID |
GET |
/v1/delivery-notes/{{id}}/document |
conn_mod_def::GLWE18QV9qA::5DcThsN9S0urWvsIcLI02Q |
| Download a Delivery Note File |
GET |
/v1/delivery-notes/{{id}}/file |
conn_mod_def::GLWE17q0kNA::323ZAms3SOuSxBL3ZQHjag |
| Get a Delivery Note by ID |
GET |
/v1/delivery-notes/{{id}} |
conn_mod_def::GLWE2FB3_1g::lcwn3HIpQa2aWsBzsHLLjA |
| Create a Delivery Note |
POST |
/v1/delivery-notes |
conn_mod_def::GLWE18f_Qqg::aC79U-g0ROGL9uk7cR_P2A |
Dunnings
| Action |
Method |
Path |
Action id |
| Document Using Dunnings |
GET |
/v1/dunnings/{{id}}/document |
conn_mod_def::GLWE2NeLdxg::WmyWeHV1TJym_poWVU7Srg |
| Download a Dunning File |
GET |
/v1/dunnings/{{id}}/file |
conn_mod_def::GLWE2Ff_MqA::owWd43TYTfKmNpYTsED6Lw |
| Get a Dunning by ID |
GET |
/v1/dunnings/{{id}} |
conn_mod_def::GLWE2NOVt5A::JqNpJ4hUTfuhUsdq6_d3Bw |
| Create a Dunning |
POST |
/v1/dunnings |
conn_mod_def::GLWE2F5YNog::SRo7hd_zQ7C70vBNSxxyVw |
EventSubscriptions
| Action |
Method |
Path |
Action id |
| Get an Event Subscription |
GET |
/v1/event-subscriptions/{{subscriptionId}} |
conn_mod_def::GLWE2VdCC5g::IScp1MNMTEOj_JMXLWkS9w |
| List Event Subscriptions |
GET |
/v1/event-subscriptions |
conn_mod_def::GLWE2NJww3g::Q_dnpuaIQt2C8tgIPJ1efg |
| Create an Event Subscription |
POST |
/v1/event-subscriptions |
conn_mod_def::GLWE2NI_hgA::LFd5KPH6Tt6Q5M-qUsFmiA |
| Delete an Event Subscription |
DELETE |
/v1/event-subscriptions/{{subscriptionId}} |
conn_mod_def::GLWE2NnAKZg::SkRLYDwHSvWliQu7cI7EUw |
Invoices
| Action |
Method |
Path |
Action id |
| Download an Invoice Document File ID |
GET |
/v1/invoices/{{id}}/document |
conn_mod_def::GLWE2fdpFYA::wf5eIPLaQh--7le5v9ShVg |
| Download Invoice File |
GET |
/v1/invoices/{{id}}/file |
conn_mod_def::GLWE2Vbxepg::qZtGDgd2QFut6VecEo7M7w |
| Get an Invoice |
GET |
/v1/invoices/{{id}} |
conn_mod_def::GLWE2evuGpg::opeoEwwSQHOgUHjOQ-A-1w |
| Create an Invoice |
POST |
/v1/invoices |
conn_mod_def::GLWE2Weqj6A::tR1e5tYFRQylNqSZ1clwpA |
OrderConfirmations
| Action |
Method |
Path |
Action id |
| Document Using Order Confirmations |
GET |
/v1/order-confirmations/{{id}}/document |
conn_mod_def::GLWE2fV8QXA::d81AL99eS2iL533gkFGdNg |
| Download Order Confirmation File |
GET |
/v1/order-confirmations/{{id}}/file |
conn_mod_def::GLWE2eSbdHA::l7w-ANMdTP-kztQm2D9Jrg |
| Get Order Confirmation |
GET |
/v1/order-confirmations/{{id}} |
conn_mod_def::GLWE2nSzzmg::IzmepMpWRV2d1MkAKoSARw |
| Create Order Confirmations |
POST |
/v1/order-confirmations |
conn_mod_def::GLWE2fnSSWg::iaWHhWEZTHOJkWYp6V66-Q |
Quotations
| Action |
Method |
Path |
Action id |
| Download a Quotation Document File ID |
GET |
/v1/quotations/{{id}}/document |
conn_mod_def::GLWE2z2Eb8g::Z2MiGCSVR4ul7yIP46rWjA |
| Download a Quotation File |
GET |
/v1/quotations/{{id}}/file |
conn_mod_def::GLWE2xUhQ6g::3RLV909eS_qnP2zB_nA2og |
| Get a Quotation by ID |
GET |
/v1/quotations/{{id}} |
conn_mod_def::GLWE2xZn4PA::gBGA5C7zTJm9wAzM6_UaOw |
| Create a Quotation |
POST |
/v1/quotations |
conn_mod_def::GLWE20yDt0A::PCieBvA5SdaWo9oYprFCvA |
Contacts
| Action |
Method |
Path |
Action id |
| Get a Contact by ID |
GET |
/v1/contacts/{{id}} |
conn_mod_def::GLWE1z6AdCA::fwd5yOFyTY6qGX3MCfChJQ |
| List Contacts |
GET |
/v1/contacts |
conn_mod_def::GLWE10bH7hA::wiDPrMWxR4WwQG9h-6RPlg |
| Create a Customer Contact |
POST |
/v1/contacts |
conn_mod_def::GLWE1qFkJbA::Z9A_iZXnQxGswL65CXhydg |
DownPaymentInvoices
| Action |
Method |
Path |
Action id |
| Download File for a Down Payment Invoice |
GET |
/v1/down-payment-invoices/{{id}}/file |
conn_mod_def::GLWE2Evt50A::58KxFpCuSgav_89WFdlZZA |
| Get a Down Payment Invoice |
GET |
/v1/down-payment-invoices/{{id}} |
conn_mod_def::GLWE2E2Qc7A::TrDSG-cQQzmgFmKfellFEQ |
Files
| Action |
Method |
Path |
Action id |
| Download a File |
GET |
/v1/files/{{id}} |
conn_mod_def::GLWE2VcyX-A::zesuTzRzTLG7QWpstk7DRg |
| Upload Files |
POST |
/v1/files |
conn_mod_def::GLWE2V5D-bA::b9sX68clRAmD6zr1hU_M9w |
RecurringTemplates
| Action |
Method |
Path |
Action id |
| Get a Recurring Template |
GET |
/v1/recurring-templates/{{id}} |
conn_mod_def::GLWE29QXmgA::EJTXEz1CSCS42AOqLvfwlA |
| List Recurring Templates |
GET |
/v1/recurring-templates |
conn_mod_def::GLWE29Qnyog::aOUaEaZLTxa8aHy1XqJIzQ |
Countries
| Action |
Method |
Path |
Action id |
| List Countries |
GET |
/v1/countries |
conn_mod_def::GLWE1yMA6wg::Sfxt74HzS_Gmd2Udu4dgvg |
PaymentConditions
| Action |
Method |
Path |
Action id |
| List Payment Conditions |
GET |
/v1/payment-conditions |
conn_mod_def::GLWE2nBOEug::Eehp_PoIRwCeBriA3_f0sQ |
PrintLayouts
| Action |
Method |
Path |
Action id |
| List Print Layouts |
GET |
/v1/print-layouts |
conn_mod_def::GLWE2nYlCdg::Ry7LEi9cRF-8e2dcE5kECQ |
PostingCategories
| Action |
Method |
Path |
Action id |
| List Posting Categories |
GET |
/v1/posting-categories |
conn_mod_def::GLWE2npJYxA::1Z4IxJekQnuzJKtlzpGa5Q |
Payments
| Action |
Method |
Path |
Action id |
| Get Payment Information for a Voucher |
GET |
/v1/payments/{{voucherId}} |
conn_mod_def::GLWE2n-p_Tg::sESiE7nDSmO2YtnLiWS_DQ |
Profile
| Action |
Method |
Path |
Action id |
| Get Profile |
GET |
/v1/profile |
conn_mod_def::GLWE2zgyorA::cEOXaI2LR_WYCI2G5c9TuQ |
When a call fails
The error comes from Lexware, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.
Full catalog: https://www.withone.ai/knowledge/lexware
Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.
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