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Payments and billing

Connect Mercury to Hypamoon

Yes. Mercury 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 Mercury, answered from its own docs.

Public API docs
Yes. Read the docs
A key you create yourself
Yes. Users with permission create a Read Only, Read and Write or Custom token under Settings, Tokens. docs.mercury.com
Versions or a changelog
Yes. A public changelog lists API additions and behaviour changes; paths carry v1. docs.mercury.com
How it signs in
An API token as the Basic auth username with an empty password, or as a Bearer token. Read and Write tokens need an IP whitelist.
Webhooks
Yes. It can tell your app when something changes. docs.mercury.com
Hosting
Cloud

Your own finance screen on Mercury, built around how you approve spending.

  • Accounts, balances and transactions, straight from Mercury.
  • AI that sorts transactions and spots unusual payments, with you approving every payment.
  • A screen for your team and an email when a large payment comes in.

Ask your chat

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

  • Which transactions this month have no category yet?
  • How much did we spend on software in the last quarter?

When something happens

Mercury sends a webhook to your app, and the app asks AI what happens next.

  1. When

    A new transaction appears on a Mercury account.

    AI decides

    AI proposes a category and checks whether the amount is unusual for that vendor.

    Then

    The owner gets an email with the proposal and any unusual amounts.

A screen for your team or customers

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

  • For your team

    A spending screen for your team per vendor and category.

Add Hypamoon

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

  • Agent on a schedule

    An agent prepares a vendor payment from an approved invoice and queues it in Mercury for admin approval.

    AI proposes, you approve

Mercury 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 Mercury 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.
  • Webhooks are not available in the sandbox. A Custom token with the RequestSendMoney scope can only queue payments that need admin approval. Each organization can register up to 100 webhook endpoints.

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 Mercury. API docs: https://docs.mercury.com/reference/getting-started-with-your-api. 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.

Mercury 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 Mercury. 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 Mercury?

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