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

# Changelog

> API updates, new features, and breaking changes

# Changelog

Subscribe to updates by watching our [GitHub repository](https://github.com/stablegenius) or joining the developer waitlist.

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## April 2026

### 2026-04-01 — Developer API Private Beta

**New**

* Payment Intents API (`POST /v1/payment-intents`, `GET /v1/payment-intents/{id}`, `GET /v1/payment-intents`)
* Transactions API (`GET /v1/transactions/{id}`, `GET /v1/transactions`)
* Merchants API (`GET /v1/merchants/{id}`, `GET /v1/merchants/{id}/balance`)
* Webhook delivery for payment events (`payment_intent.confirmed`, `payment_intent.expired`, `settlement.completed`)
* Webhook signature verification (HMAC-SHA256)
* Sandbox environment (Base Sepolia testnet)
* API key authentication (`sk_test_*` / `sk_live_*`)

**Supported**

* USDC on Base

***

## Roadmap

Upcoming additions (dates subject to change):

* **Q2 2026** — USDC on Solana, USDC on Arbitrum
* **Q3 2026** — USDC on Optimism, Ethereum, Polygon
* **Q3 2026** — Programmatic merchant onboarding API
* **Q4 2026** — USDT multi-chain support
* **Q4 2026** — Refund API
* **2027** — NFC tap-to-pay, SDK libraries (Node, Python, Go)