---
title: "Alpaca (@alpacahq)"
description: "Alpaca builds high performance APIs for Stock and Crypto Trading"
account: "alpacahq"
---

# Alpaca

Alpaca builds high performance APIs for Stock and Crypto Trading

## APIs

5 public APIs with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/alpacahq/feed.md

- [Market Data API](https://skmtc.dev/alpacahq/apis/market-data-api.md)
- [Authentication API](https://skmtc.dev/alpacahq/apis/authentication-api.md)
- [Broker API](https://skmtc.dev/alpacahq/apis/broker-api.md): Brokerage: open accounts, fund them, and trade stocks, options and crypto
- [GIFT City Extensions API](https://skmtc.dev/alpacahq/apis/gift-city-extensions-api.md): Trading restrictions: list symbols blocked for GIFT City accounts, with OAuth2 access
- [{{.Title}}](https://skmtc.dev/alpacahq/apis/title.md): Onboarding and KYC: sign up users, log in, reset passwords, and link bank accounts via Plaid