# GRVT (Blue Square Group Limited)

> GRVT (pronounced "gravity") is a licensed hybrid crypto derivatives exchange that pairs a
> high-performance central limit order book with self-custody settlement on a zkSync-based L2.
> It offers a public Market Data API and an authenticated Trading API (REST + WebSocket) covering
> perpetual futures, spot, positions, transfers, and on-chain vaults. Blue Square Group Limited is
> the corporate entity behind GRVT; the engineering org is Gravity Technologies (Singapore).

## APIs
- [Market Data API](https://market-data.grvt.io): Public market data — instruments, tickers, orderbooks, trades, candlesticks, funding rates.
- [Trading API](https://trades.grvt.io): Authenticated trading — orders, positions, margin, transfers, withdrawals, vault investment.
- [Auth / edge](https://edge.grvt.io): API-key login endpoint (POST /auth/api_key/login).

## Docs
- [API Docs](https://api-docs.grvt.io): Trading and market-data REST + WebSocket reference.
- [GitHub org](https://github.com/gravity-technologies): SDKs, api-spec, and agent skills.

## SDKs
- [Python SDK — grvt-pysdk](https://pypi.org/project/grvt-pysdk/): pip install grvt-pysdk
- [JS/TS client — @grvt/client](https://www.npmjs.com/package/@grvt/client): npm install @grvt/client

## Agent Skills
- [grvt-skills](https://github.com/gravity-technologies/grvt-skills): perpetual-trading, market-data, account-management, investment — `npx skills add gravity-technologies/grvt-skills`

## Specs & artifacts (API Evangelist)
- [Error code registry](https://raw.githubusercontent.com/api-evangelist/blue-square-group-limited/refs/heads/main/errors/blue-square-group-limited-problem-types.yml)
- [Authentication profile](https://raw.githubusercontent.com/api-evangelist/blue-square-group-limited/refs/heads/main/authentication/blue-square-group-limited-authentication.yml)
- [Conventions](https://raw.githubusercontent.com/api-evangelist/blue-square-group-limited/refs/heads/main/conventions/blue-square-group-limited-conventions.yml)
- [WebSocket streams catalog](https://raw.githubusercontent.com/api-evangelist/blue-square-group-limited/refs/heads/main/asyncapi/blue-square-group-limited-streams.yml)
- [Sandbox / testnet](https://raw.githubusercontent.com/api-evangelist/blue-square-group-limited/refs/heads/main/sandbox/blue-square-group-limited-sandbox.yml)

## Security
- [security.txt](https://grvt.io/.well-known/security.txt): security-report@grvt.io; private Bugcrowd bug bounty program.