Build on a post-quantum secure blockchain with an API you already know. The Qustody API provides a Fireblocks-like operating model: multi-tenant vault management, policy-enforced transactions, and webhook-driven event delivery, all powered by quantum-safe signatures.Documentation Index
Fetch the complete documentation index at: https://docs.quantumapi.io/llms.txt
Use this file to discover all available pages before exploring further.
Get started
Quickstart
Create your first vault, register a wallet, and submit a transaction in minutes.
Authentication
Set up API credentials and secure your integration.
Architecture
Understand the non-custodial signing model and transaction lifecycle.
API reference
Explore all 27 endpoints with request/response examples.
Key concepts
Vaults & wallets
Organize addresses into vault accounts with multi-wallet support.
Transactions
Full lifecycle from creation through signing to on-chain confirmation.
Policies
Enforce spending limits, whitelists, and approval workflows.
Webhooks
Receive HMAC-signed event notifications for every state change.
Why Qustody?
- Post-quantum security. Quantum-safe signatures protect against quantum computing threats
- Non-custodial. Your keys never touch our servers; signing happens via secure callback
- Fireblocks-compatible. Familiar operating model for institutional integrators
- Policy engine. Configurable rules enforce compliance before transactions are broadcast
- Webhook delivery. HMAC-SHA256 signed events with exponential backoff and dead-letter handling