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Connect JOIN to Hypamoon

Yes. JOIN 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 JOIN, answered from its own docs.

Public API docs
Yes. Read the docs
A key you create yourself
Yes. Generate a token yourself in your JOIN account under the API credentials of your user settings. help.join.com
Versions or a changelog
Yes. Versioned API at /v3 with dated revisions you pin per request, and a v2 to v3 migration guide. docs.join.com
How it signs in
Company token in the Authorization header; a revoked token cannot be reactivated.
Webhooks
Not confirmed. help.join.com
Hosting
Cloud

Your own hiring flow on JOIN, from job post to first call.

  • Jobs and candidates, straight from JOIN.
  • AI that reads each new candidate and tells you who to call first.
  • A text message to candidates and a weekly overview for you.

Ask your chat

Answers straight from your JOIN data, in Claude or another chat with the full Hypamoon connection.

  • Which candidates applied for the kitchen job this week?
  • Which job posts have had no candidates in fourteen days?

On a schedule

JOIN has no webhooks we could confirm, so an agent checks every 15 minutes and decides what happens next.

  1. Every 15 minutes

    New candidates since the last check.

    AI decides

    AI reads the answers and decides who fits the job.

    Then

    You get one email with the candidates worth a call.

Add Hypamoon

Text messages, email, phone, payments and agents run in the same project as the adapter.

  • Text message, Netherlands for now

    A candidate you invite gets a text message with the time of the call.

JOIN 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 JOIN waits for your approval, one call at a time. How adapters work

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.

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 JOIN. API docs: https://docs.join.com/reference/getting-started. Read: [what]. Write: [what, or nothing].

Open in Claude

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

Sources

Checked on 7 November 2026.

JOIN 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 JOIN. Found something that changed? Tell us at support.

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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 Open in ChatGPT

Fill in the name of your software. Checking needs no connection to Hypamoon.

Ready to connect JOIN?

Connect your chat once, then ask it to build the adapter.

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