For AI agents: visit https://developers.achq.com/llms.txt for an index of all pages formatted in Markdown and endpoints in OpenAPI.

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Guides API Reference

v1.0

Guides

v1.0Guides API Reference

Explore ACHQ

About ACHQ
Platform Features

Core Concepts

Overview
Authentication
Tokenization
Application testing
Same-Day ACH
Identifying numbers

Payments API

Overview
Tokenize a bank acount
Create a payment
- Use a token
Update a payment
Cancel a payment
Hold a payment
Refund a payment

Settlements

Overview
Get Settlements
Get Settlement Details

Event Monitoring

Overview
Payment event tracking

ACCOUNT INSIGHTS

Bank account tools
- Bank Account Response Codes

General ACH Stuff

Return Codes
Authorization Guide

Compliance guide

ACH Basics
Nacha Rules
Payment Types
Returns and disputes
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About ACHQ

Build a world-class embedded payments experience with the ACHQ API

- Big picture
- About ACHQ