> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zodia-custody.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Zodia Custody API — institutional-grade digital asset custody

## Overview

Zodia's API is RESTful over HTTPS and consumes JSON payloads. All requests must be digitally signed using your company private key (SHA256withRSA, minimum 2048 bits).

## Key Principles

* Transport level security: **TLS 1.2**
* All requests must be **digitally signed** using your company RSA private key
* Requires at least **two users**: a **maker** (creates requests) and a **checker** (approves requests)
* Rate limits: **1 request/second** and **128 requests/day** per endpoint

## Base URLs

| Environment   | URL                                        |
| ------------- | ------------------------------------------ |
| Production    | `https://api.custody.api-zodia.io`         |
| Sandbox       | `https://gateway-preprod.uat.api-zodia.io` |
| QA (Internal) | `https://gateway-qa.qa.api-zodia.io`       |

## Contact

For onboarding and API access: **[customerservice@zodia.io](mailto:customerservice@zodia.io)**

Last Update: 16 April 2026
<warning> This is a temporary update only to add QA env </warning>