--- title: "Connect Twinfield to Hypamoon" description: "Twinfield documents its API, but access goes through Twinfield first. What it takes to connect it to Hypamoon, with sources." url: https://hypamoon.com/connect-to/twinfield --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Twinfield ERP and accounting # Connect Twinfield to Hypamoon Possible, with help from Twinfield. The API is documented, but you cannot just create a key: access goes through Twinfield first. Possible ## The check Three questions about the API of Twinfield, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://developers.twinfield.com/documentation/) **A key you create yourself**\ **No.** Every integration must be certified by Wolters Kluwer as part of a paid, ongoing Twinfield API subscription, which also gives access to the Developer Portal where clients are registered. [assets.contenthub.wolterskluwer.com](https://assets.contenthub.wolterskluwer.com/api/public/content/3089200-api-voorwaarden-2026-53de6af8ee?v=df268b4f) **Versions or a changelog**\ **Yes.** Breaking changes are announced with deprecation, sunset and end of life dates. [developers.twinfield.com](https://developers.twinfield.com/documentation/getting-started/breaking-changes) **How it signs in**\ OpenID Connect and OAuth 2.0; access tokens last one hour and refresh tokens are long lived. **Webhooks**\ **Not confirmed.** **Hosting**\ Cloud **Condition**\ Needs a paid Twinfield API subscription with certification by Wolters Kluwer. ## In practice What it takes in a real Twinfield administration. **Getting access**\ You take out a paid Twinfield API subscription with Wolters Kluwer, register the client in the Developer Portal, get the integration certified, and the customer signs in once to approve it. **Limits**\ Credits per minute: 1,000 per IP address, 1,000 per organisation and 1,000 per client (500 per client and organisation); a query costs 1 credit, other requests 3. Uncertified clients get 5% of these numbers. At most 20 concurrent requests per client, 10 per organisation. [developers.twinfield.com](https://developers.twinfield.com/documentation/getting-started/fair-use-policy) **Writing**\ **Read and write.** Add sales and journal transactions through the SOAP and XML services; at most 1,000 lines per transaction. **Cost**\ Every integration needs an ongoing paid Twinfield API subscription that includes certification; the price is not published. Twinfield may raise the fee for use far above average. [assets.contenthub.wolterskluwer.com](https://assets.contenthub.wolterskluwer.com/api/public/content/3089200-api-voorwaarden-2026-53de6af8ee?v=df268b4f) ## What you can build Book sales from your web shop or till into Twinfield as one daily transaction, and ask your chat for open items per customer without opening Twinfield. Your chat writes it as a Hypamoon adapter from the docs above. Reading starts after you click Allow in the portal, and every write waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Twinfield signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Twinfield takes more work: ask your chat to check this first. - Most web services are SOAP with XML; the access token goes in the SOAP header. ## Try it in your chat First get access from Twinfield. Then fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for Twinfield. API docs: https://developers.twinfield.com/documentation/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Twinfield.%20API%20docs%3A%20https%3A%2F%2Fdevelopers.twinfield.com%2Fdocumentation%2F.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. [The full recipe](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 1 November 2026. - [developers.twinfield.com/documentation/](https://developers.twinfield.com/documentation/) - [assets.contenthub.wolterskluwer.com/api/public/content/3089200-api-voorwaarden-2026-53de6af8ee?v=df268b4f](https://assets.contenthub.wolterskluwer.com/api/public/content/3089200-api-voorwaarden-2026-53de6af8ee?v=df268b4f) - [developers.twinfield.com/documentation/getting-started/breaking-changes](https://developers.twinfield.com/documentation/getting-started/breaking-changes) - [developers.twinfield.com/documentation/getting-started/fair-use-policy](https://developers.twinfield.com/documentation/getting-started/fair-use-policy) Twinfield is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with Twinfield. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in erp and accounting - [**Acumatica** Open](https://hypamoon.com/connect-to/acumatica) - [**AFAS Profit** Open](https://hypamoon.com/connect-to/afas-profit) - [**DATEV** Possible](https://hypamoon.com/connect-to/datev) - [**e-Boekhouden.nl** Open](https://hypamoon.com/connect-to/e-boekhouden) - [**Exact for Accountancy** Open](https://hypamoon.com/connect-to/exact-for-accountancy) - [**Exact Globe+** Possible](https://hypamoon.com/connect-to/exact-globe) - [**Exact Gripp** Possible](https://hypamoon.com/connect-to/exact-gripp) - [**Exact Multivers** Possible](https://hypamoon.com/connect-to/unit4-multivers) - [**Exact Online** Open](https://hypamoon.com/connect-to/exact-online) - [**FreshBooks** Open](https://hypamoon.com/connect-to/freshbooks) - [**Holded** Open](https://hypamoon.com/connect-to/holded) - [**Isah** Unknown](https://hypamoon.com/connect-to/isah) - [**Jortt** Open](https://hypamoon.com/connect-to/jortt) - [**KING Finance** Possible](https://hypamoon.com/connect-to/king-finance) - [**Lexware Office (lexoffice)** Open](https://hypamoon.com/connect-to/lexoffice) - [**Microsoft Dynamics 365 Business Central** Open](https://hypamoon.com/connect-to/dynamics-365-business-central) - [**Microsoft Dynamics 365 Finance and Operations** Open](https://hypamoon.com/connect-to/dynamics-365-finance-operations) - [**Microsoft Dynamics NAV** Open](https://hypamoon.com/connect-to/dynamics-nav) - [**Moneybird** Open](https://hypamoon.com/connect-to/moneybird) - [**Odoo** Open](https://hypamoon.com/connect-to/odoo) - [**Oracle NetSuite** Open](https://hypamoon.com/connect-to/oracle-netsuite) - [**Pennylane** Open](https://hypamoon.com/connect-to/pennylane) - [**QuickBooks Online** Open](https://hypamoon.com/connect-to/quickbooks-online) - [**Ridder iQ** Unknown](https://hypamoon.com/connect-to/ridder-iq) - [**Sage Accounting (Sage Business Cloud)** Unknown](https://hypamoon.com/connect-to/sage-accounting) - [**Sage Intacct** Possible](https://hypamoon.com/connect-to/sage-intacct) - [**SAP Business One** Open](https://hypamoon.com/connect-to/sap-business-one) - [**SAP S/4HANA** Open](https://hypamoon.com/connect-to/sap-s4hana) - [**sevDesk** Open](https://hypamoon.com/connect-to/sevdesk) - [**Simplicate** Open](https://hypamoon.com/connect-to/simplicate) - [**SnelStart** Possible](https://hypamoon.com/connect-to/snelstart) - [**Syntess Atrium** Closed](https://hypamoon.com/connect-to/syntess-atrium) - [**Unit4 ERPx** Possible](https://hypamoon.com/connect-to/unit4-erpx) - [**Visma eAccounting** Possible](https://hypamoon.com/connect-to/visma-eaccounting) - [**Visma.net ERP** Possible](https://hypamoon.com/connect-to/visma-net-erp) - [**Wave** Possible](https://hypamoon.com/connect-to/wave) - [**Xero** Open](https://hypamoon.com/connect-to/xero) - [**Yuki (Nmbrs Accounting)** Unknown](https://hypamoon.com/connect-to/yuki) - [**Zoho Books** Open](https://hypamoon.com/connect-to/zoho-books) - [**BILL (Bill.com)** Open](https://hypamoon.com/connect-to/bill) - [**Brex** Open](https://hypamoon.com/connect-to/brex) - [**Expensify** Possible](https://hypamoon.com/connect-to/expensify) - [**Pleo** Possible](https://hypamoon.com/connect-to/pleo) - [**Ramp** Open](https://hypamoon.com/connect-to/ramp) [All 267 tools](https://hypamoon.com/connect-to) ## Tool not listed? Ask the chat to check its API. The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found. Say this in your chat > Check if \[software\] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) Fill in the name of your software. Checking needs no connection to Hypamoon. ## Ready to connect Twinfield? Connect your chat once, then ask it to build the adapter. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=twinfield) Works in Claude and ChatGPT. [Add to Claude](https://hypamoon.com/connect?via=connect-to~twinfield#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~twinfield#chatgpt)