--- title: "weclapp API: connect it to your AI chat ยท Hypamoon" description: "The weclapp API is open, signs in with an API key and sends webhooks. What your AI chat can build with it on Hypamoon, with sources." url: https://hypamoon.com/connect-to/weclapp --- 1. [Connect to](https://hypamoon.com/connect-to) 2. weclapp ERP and accounting # Connect weclapp to Hypamoon Yes. weclapp has a public, versioned API and you create the key yourself, so your chat can write the adapter. Open ## The check Three questions about the API of weclapp, answered from its own docs. **Public API docs**\ **Yes.** Public OpenAPI reference for API v1 and v2, readable without an account. [Read the docs](https://www.weclapp.com/api/) **A key you create yourself**\ **Yes.** Each user finds an API token under My settings and can generate a new one at any time; the token carries that user's permissions. [weclapp.com](https://www.weclapp.com/api/) **Versions or a changelog**\ **Yes.** Versioned API (v1 and v2) with a changelog; an old version stays available for at least one year after a new one. [weclapp.com](https://www.weclapp.com/api/) **How it signs in**\ A per-user API token in the AuthenticationToken header, or HTTP Basic with \* as the username and the token as the password. **Webhooks**\ **Yes.** It can tell your app when something changes. [weclapp.com](https://www.weclapp.com/api/) **Hosting**\ Cloud ## In practice What it takes in a real weclapp administration. **Getting access**\ Each weclapp user creates or renews an API token under My settings; give the integration its own user with only the rights it needs. **Limits**\ No fixed rate limit. Parallel requests per tenant are queued, and after about 30 seconds in the queue the API answers 429; weclapp asks for retries with backoff and a request timeout of at least one minute. [weclapp.com](https://www.weclapp.com/api/) **Writing**\ **Read and write.** Create (POST) and update (PUT) records such as customers, articles and sales orders, within the rights of the token's user. **Cost**\ Not published. ## Your own customer portal on weclapp, built around how your customers order. - Customers, articles, sales orders and invoices, through the weclapp API. - AI that checks new orders and flags customers who start paying late, with you approving every change. - A portal for your customers and a short weekly email for you. ### Ask your chat Answers straight from your weclapp data, in Claude or another chat with the full Hypamoon connection. - Which customers have invoices more than 30 days overdue? - Which articles are below their minimum stock? ### When something happens weclapp sends a webhook to your app, and the app asks AI what happens next. 1. When A new sales order is created in weclapp. AI decides AI checks the prices, the delivery date and the customer's payment history. Then Sales gets an email when an order needs a second look. ### A screen for your team or customers An app on your own address, with sign-in, on top of the same weclapp data. - For your customers Customers sign in and see their orders, delivery status and open invoices from weclapp. ### Add Hypamoon Text messages, email, phone, payments and agents run in the same project as the adapter. - Agent on a schedule Once a week, an agent emails you the customers who order less than they used to. weclapp stays the core: your chat builds the rest on its API, as an adapter plus an app and agents in your Hypamoon project. Reading starts after you click Allow in the portal. Every change an agent or a chat makes in weclapp waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Your adapter uses a fixed key: you paste it once in the Hypamoon portal, never in the chat, and it only goes to the API host you allow. - The address has your tenant in it, for example yourcompany.weclapp.com/webapp/api/v2. The token has the same rights as the user it belongs to. ## Try it in your chat Fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for weclapp. API docs: https://www.weclapp.com/api/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20weclapp.%20API%20docs%3A%20https%3A%2F%2Fwww.weclapp.com%2Fapi%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 7 November 2026. - [www.weclapp.com/api/](https://www.weclapp.com/api/) weclapp 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 weclapp. Found something that changed? 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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 weclapp? 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=weclapp) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~weclapp#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~weclapp#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)