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Payments and billing

Connect Teller to Hypamoon

Possible, with help from Teller. The API is documented, but you cannot just create a key: access goes through Teller first.

Possible

The check

Three questions about the API of Teller, answered from its own docs.

Public API docs
Yes. Read the docs
A key you create yourself
No. Sandbox and a free development environment with up to 100 enrollments exist, but production requires Teller's Know Your Business verification and you contact Teller to start. teller.io
Versions or a changelog
Not confirmed.
How it signs in
Mutual TLS with a client certificate issued by Teller, plus the user's access token as the Basic auth username with an empty password.
Webhooks
Yes. It can tell your app when something changes. teller.io
Hosting
Cloud
Condition
Production after Teller's Know Your Business verification.

Your own bank feed on Teller, built around your US accounts.

  • Accounts, balances and transactions from the banks you enroll.
  • AI that sorts transactions and flags unusual ones, with you deciding.
  • A screen for your team and a weekly email.

Ask your chat

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

  • What came into our main account this week?
  • Which vendors did we pay more than usual this month?

On a schedule

An agent checks Teller every 15 minutes and decides what happens next.

  1. Every 15 minutes

    Every morning, new transactions on enrolled accounts.

    AI decides

    AI flags unusual amounts and new vendors.

    Then

    The owner gets one email with what stands out.

A screen for your team or customers

An app on your own address, with sign-in, on top of the same Teller data.

  • For your team

    A balance and transaction screen per account.

Teller 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 Teller 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.
  • Development connects to real banks with real data, limited to 100 enrollments in total.

Try it in your chat

First get access from Teller. Then fill in what to read and write, and send it.

Say this in your chat

Build the Hypamoon recipe build-an-adapter for Teller. API docs: https://teller.io/docs. 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.

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

More in payments and billing

All 1094 tools

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 Teller?

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

Start free

Works in Claude, ChatGPT and Copilot. Add to Claude Add to ChatGPT Add to Copilot