--- title: "Navan API: connect it to your AI chat ยท Hypamoon" description: "The Navan API is open and signs in with OAuth client credentials. What your AI chat can build with it on Hypamoon, how it connects, and the sources we checked." url: https://hypamoon.com/connect-to/navan --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Navan ERP and accounting # Connect Navan to Hypamoon Yes, with one catch. Navan 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 Navan, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://developer.navan.com/api/) **A key you create yourself**\ **Yes.** The guide starts with creating your API credentials in the Navan platform and choosing scopes such as Expense: Write. [developer.navan.com](https://developer.navan.com/api/) **Versions or a changelog**\ **Yes.** Path versioning (v1); breaking changes get a new version, and release notes list changes. [developer.navan.com](https://developer.navan.com/api/) **How it signs in**\ OAuth 2.0 client credentials from the Navan platform; EU accounts use the EU token address and region header. **Webhooks**\ **Not confirmed.** **Hosting**\ Cloud ## Your own travel and expense overview on Navan, built around your teams. - Expense transactions and their status, from the scopes you choose. - AI that checks each expense against your policy and proposes the category, with a person approving. - A screen for budget owners and a weekly email for finance. ### Ask your chat Answers straight from your Navan data, in Claude or another chat with the full Hypamoon connection. - Which expenses from this week are missing a receipt? - Which teams spent most on travel this month? ### On a schedule Navan has no webhooks we could confirm, so an agent checks every 15 minutes and decides what happens next. 1. Every 15 minutes New expense transactions since the last check. AI decides AI suggests the category and flags expenses outside policy. Then After approval, the expense is updated in Navan. AI proposes, you approve ### A screen for your team or customers An app on your own address, with sign-in, on top of the same Navan data. - For your team Budget owners see their team's travel and expense costs per month. Navan 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 Navan waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Navan signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Navan takes more work: ask your chat to check this first. - Audit log, activity and user endpoints are only for eligible companies; a 403 means you should contact your Navan account team. ## 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 Navan. API docs: https://developer.navan.com/api/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Navan.%20API%20docs%3A%20https%3A%2F%2Fdeveloper.navan.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. - [developer.navan.com/api/](https://developer.navan.com/api/) Navan 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 Navan. 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 Navan? 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=navan) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~navan#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~navan#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)