--- title: "Penneo API: connect it to your AI chat ยท Hypamoon" description: "The Penneo API is open, signs in with OAuth and sends webhooks. What your AI chat can build with it on Hypamoon, how it connects, and the sources we checked." url: https://hypamoon.com/connect-to/penneo --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Penneo Files and e-signing # Connect Penneo to Hypamoon Yes, with one catch. Penneo has an open API that you can use yourself, but it signs in with OAuth only, and that takes more work in a Hypamoon adapter today. Open ## The check Three questions about the API of Penneo, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://developer.penneo.com/) **A key you create yourself**\ **Yes.** The API key and secret for the api\_keys grant are generated in your Penneo user settings; the Postman collections start on the sandbox. [developer.penneo.com](https://developer.penneo.com/) **Versions or a changelog**\ **Yes.** The docs are versioned (currently v1.6). [developer.penneo.com](https://developer.penneo.com/) **How it signs in**\ OAuth 2.0 through Penneo Login, or API keys exchanged for an access token. **Webhooks**\ **Yes.** It can tell your app when something changes. [developer.penneo.com](https://developer.penneo.com/) **Hosting**\ Cloud ## What you can build Send documents for signing with an e-ID from your chat, and get a message when a case file is completed. 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 - Penneo signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Penneo takes more work: ask your chat to check this first. ## 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 Penneo. API docs: https://developer.penneo.com/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Penneo.%20API%20docs%3A%20https%3A%2F%2Fdeveloper.penneo.com%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. - [developer.penneo.com/](https://developer.penneo.com/) Penneo 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 Penneo. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in files and e-signing - [**Adobe Acrobat Sign** Open](https://hypamoon.com/connect-to/adobe-acrobat-sign) - [**Box** Open](https://hypamoon.com/connect-to/box) - [**DocuSign** Possible](https://hypamoon.com/connect-to/docusign) - [**Dropbox** Open](https://hypamoon.com/connect-to/dropbox) - [**PandaDoc** Possible](https://hypamoon.com/connect-to/pandadoc) - [**SharePoint and OneDrive** Open](https://hypamoon.com/connect-to/sharepoint-onedrive) - [**Yousign (Youtrust)** Possible](https://hypamoon.com/connect-to/yousign) - [**DocuWare** Open](https://hypamoon.com/connect-to/docuware) - [**Google Drive** Open](https://hypamoon.com/connect-to/google-drive) - [**Dropbox Sign** Open](https://hypamoon.com/connect-to/dropbox-sign) - [**BoldSign** Open](https://hypamoon.com/connect-to/boldsign) - [**SignWell** Open](https://hypamoon.com/connect-to/signwell) - [**Oneflow** Open](https://hypamoon.com/connect-to/oneflow) - [**Documenso** Open](https://hypamoon.com/connect-to/documenso) - [**signNow** Open](https://hypamoon.com/connect-to/signnow) - [**Zoho Sign** Open](https://hypamoon.com/connect-to/zoho-sign) - [**Nextcloud** Open](https://hypamoon.com/connect-to/nextcloud) - [**pCloud** Possible](https://hypamoon.com/connect-to/pcloud) - [**Scrive** Open](https://hypamoon.com/connect-to/scrive) - [**Signhost** Open](https://hypamoon.com/connect-to/signhost) - [**Skribble** Open](https://hypamoon.com/connect-to/skribble) - [**M-Files** Open](https://hypamoon.com/connect-to/m-files) - [**Autodesk Platform Services** Open](https://hypamoon.com/connect-to/autodesk-platform-services) [All 1094 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 Penneo? 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=penneo) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~penneo#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~penneo#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)