Blue Square Group Limited website screenshot

Blue Square Group Limited

Blue Square Group Limited is the corporate entity behind GRVT (pronounced "gravity"), a licensed hybrid crypto derivatives exchange headquartered in Singapore and engineered by Gravity Technologies. GRVT pairs a high-performance central limit order book with self-custody settlement on a zkSync-based Layer 2, and exposes a public Market Data API and an authenticated Trading API over both REST and WebSocket. The APIs cover perpetual futures and spot trading, order management (including bulk orders, TP/SL and trigger orders), positions and margin, sub-account and funding-account summaries, transfers, deposits and withdrawals, and on-chain vault investment and redemption. Authentication combines an API-key login with Ethereum-style ECDSA (secp256k1 / EIP-712) request signing and scoped session keys. First-party Python and JavaScript/TypeScript SDKs plus published agent skills round out the developer surface. Surfaced as a portfolio company of 500 Global and enriched into the API Evangelist network.

Blue Square Group Limited publishes 1 API on the APIs.io network: GRVT Market Data API. Tagged areas include Company, Cryptocurrency, Derivatives Exchange, Trading, and Perpetual Futures.

The Blue Square Group Limited catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Blue Square Group Limited’s developer surface includes documentation, API reference, authentication, sandbox, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub
32.0/100 thin ▬ flat Agent 55/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
2 APIs 1 MCP Servers
CompanyCryptocurrencyDerivatives ExchangeTradingPerpetual FuturesMarket DataBlockchainWebSocketFinancial Services

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 32.0/100 · thin
Contract Quality 5.7 / 25
Developer Ergonomics 10.9 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 3.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 55/100 · agent ready
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 3 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/blue-square-group-limited: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

GRVT Market Data API

Public market-data API for GRVT — instruments, currencies, supported assets, margin rules, mini/full tickers, orderbook levels, trades, trade history, candlesticks, and funding ...

GRVT Trading API

Authenticated trading API for GRVT — create/cancel orders (single, bulk, TP/SL, trigger), open orders and order history, fills, positions and position history, margin management...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

blue-square-group-limited-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Blue Square Group Limited Streams

ASYNCAPI

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Blue Square Group Limited Authentication

apiKey/signature · 2 schemes

SECURITY

Blue Square Group Limited Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Blue Square Group Limited Vulnerability Disclosure

Bugcrowd · security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 MCPServer
MCPServer
 WellKnown
WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 Idempotency
Idempotency
 DataModel
DataModel
 Webhooks
Webhooks
 Conformance
Conformance
 Lifecycle
Lifecycle

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 5

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: blue-square-group-limited
name: Blue Square Group Limited
description: Blue Square Group Limited is the corporate entity behind GRVT (pronounced "gravity"), a licensed hybrid crypto
  derivatives exchange headquartered in Singapore and engineered by Gravity Technologies. GRVT pairs a high-performance central
  limit order book with self-custody settlement on a zkSync-based Layer 2, and exposes a public Market Data API and an authenticated
  Trading API over both REST and WebSocket. The APIs cover perpetual futures and spot trading, order management (including
  bulk orders, TP/SL and trigger orders), positions and margin, sub-account and funding-account summaries, transfers, deposits
  and withdrawals, and on-chain vault investment and redemption. Authentication combines an API-key login with Ethereum-style
  ECDSA (secp256k1 / EIP-712) request signing and scoped session keys. First-party Python and JavaScript/TypeScript SDKs plus
  published agent skills round out the developer surface. Surfaced as a portfolio company of 500 Global and enriched into
  the API Evangelist network.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://avatars.githubusercontent.com/u/112316440?v=4
url: https://raw.githubusercontent.com/api-evangelist/blue-square-group-limited/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Cryptocurrency
- Derivatives Exchange
- Trading
- Perpetual Futures
- Market Data
- Blockchain
- WebSocket
- Financial Services
apis:
- name: GRVT Market Data API
  description: Public market-data API for GRVT — instruments, currencies, supported assets, margin rules, mini/full tickers,
    orderbook levels, trades, trade history, candlesticks, and funding rates. No authentication required. Real-time equivalents
    are available over WebSocket streams.
  humanURL: https://api-docs.grvt.io/
  baseURL: https://market-data.grvt.io
  tags:
  - Market Data
  - Cryptocurrency
  - Trading
  properties:
  - type: AsyncAPI
    url: asyncapi/blue-square-group-limited-streams.yml
- name: GRVT Trading API
  description: Authenticated trading API for GRVT — create/cancel orders (single, bulk, TP/SL, trigger), open orders and order
    history, fills, positions and position history, margin management, sub-account and funding summaries, transfers/deposits/withdrawals,
    and vault invest/redeem. Requires API-key login plus ECDSA request signing.
  humanURL: https://api-docs.grvt.io/
  baseURL: https://trades.grvt.io
  tags:
  - Trading
  - Derivatives Exchange
  - Perpetual Futures
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/blue-square-group-limited-domain-security.yml
- type: Website
  url: https://grvt.io
- type: Documentation
  url: https://api-docs.grvt.io/
- type: APIReference
  url: https://api-docs.grvt.io/
- type: GitHubOrganization
  url: https://github.com/gravity-technologies
- type: LLMsTxt
  url: llms/blue-square-group-limited-llms.txt
- type: Packages
  url: packages/blue-square-group-limited-packages.yml
- type: SDKs
  url: packages/blue-square-group-limited-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/blue-square-group-limited-authentication.yml
- type: ErrorCatalog
  url: errors/blue-square-group-limited-problem-types.yml
- type: Conventions
  url: conventions/blue-square-group-limited-conventions.yml
- type: Idempotency
  url: conventions/blue-square-group-limited-conventions.yml
- type: DataModel
  url: data-model/blue-square-group-limited-data-model.yml
- type: Sandbox
  url: sandbox/blue-square-group-limited-sandbox.yml
- type: Webhooks
  url: asyncapi/blue-square-group-limited-streams.yml
- type: Conformance
  url: conformance/blue-square-group-limited-conformance.yml
- type: MCPServer
  url: mcp/blue-square-group-limited-mcp.yml
- type: Lifecycle
  url: lifecycle/blue-square-group-limited-lifecycle.yml
- type: WellKnown
  url: well-known/blue-square-group-limited-well-known.yml
- type: SecurityTxt
  url: well-known/blue-square-group-limited-security.txt
- type: VulnerabilityDisclosure
  url: security/blue-square-group-limited-vulnerability-disclosure.yml
- type: Security
  url: https://grvt.io/.well-known/security.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence