--- title: "Connect Harvest to Hypamoon" description: "Harvest has an open API. See what you can build with it in Hypamoon, how it signs in, and the sources we checked." url: https://hypamoon.com/connect-to/harvest --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Harvest Work and projects # Connect Harvest to Hypamoon Yes. Harvest 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 Harvest, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://help.getharvest.com/api-v2/) **A key you create yourself**\ **Yes.** Create a personal access token in the Developers section of Harvest ID. [help.getharvest.com](https://help.getharvest.com/api-v2/authentication-api/authentication/authentication/) **Versions or a changelog**\ **Yes.** API version 2 in the path, with the older V1 kept apart. [help.getharvest.com](https://help.getharvest.com/api-v2/) **How it signs in**\ Personal access token as a Bearer token together with your Harvest account ID; OAuth 2.0 for apps used by other people. **Webhooks**\ **No.** [help.getharvest.com](https://help.getharvest.com/api-v2/) **Hosting**\ Cloud ## What you can build Log time on a project from your chat, look up hours per client, and create an invoice draft from tracked time. 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 - 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. - There are no webhooks, so changes have to be fetched, for example with the updated\_since filter. ## 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 Harvest. API docs: https://help.getharvest.com/api-v2/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Harvest.%20API%20docs%3A%20https%3A%2F%2Fhelp.getharvest.com%2Fapi-v2%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. - [help.getharvest.com/api-v2/](https://help.getharvest.com/api-v2/) - [help.getharvest.com/api-v2/authentication-api/authentication/authentication/](https://help.getharvest.com/api-v2/authentication-api/authentication/authentication/) Harvest 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 Harvest. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in work and projects - [**Airtable** Open](https://hypamoon.com/connect-to/airtable) - [**Asana** Open](https://hypamoon.com/connect-to/asana) - [**Basecamp** Open](https://hypamoon.com/connect-to/basecamp) - [**ClickUp** Open](https://hypamoon.com/connect-to/clickup) - [**Confluence** Open](https://hypamoon.com/connect-to/confluence) - [**Google Workspace** Open](https://hypamoon.com/connect-to/google-workspace) - [**Jira** Open](https://hypamoon.com/connect-to/jira) - [**Microsoft 365** Open](https://hypamoon.com/connect-to/microsoft-365) - [**Miro** Open](https://hypamoon.com/connect-to/miro) - [**monday.com** Open](https://hypamoon.com/connect-to/monday-com) - [**Notion** Open](https://hypamoon.com/connect-to/notion) - [**Slack** Open](https://hypamoon.com/connect-to/slack) - [**Smartsheet** Open](https://hypamoon.com/connect-to/smartsheet) - [**Teamwork.com** Open](https://hypamoon.com/connect-to/teamwork-com) - [**Toggl Track** Open](https://hypamoon.com/connect-to/toggl-track) - [**Trello** Open](https://hypamoon.com/connect-to/trello) - [**Wrike** Open](https://hypamoon.com/connect-to/wrike) - [**Zoom** Open](https://hypamoon.com/connect-to/zoom) [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 Harvest? 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=harvest) Works in Claude and ChatGPT. [Add to Claude](https://hypamoon.com/connect?via=connect-to~harvest#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~harvest#chatgpt)