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

31.9/100 thin ▬ flat Agent 43/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessSelf serve

2 APIs 1 MCP Servers

Company CryptocurrencyDerivatives ExchangeTrading Perpetual Futures Market Data Blockchain WebSocket Financial-Services

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 31.9/100 · thin

Contract Quality 9.6 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 0.0 / 17

Operational Transparency 1.7 / 11

Contract Governance 0.5 / 10

Discoverability 6.5 / 9

Regulatory Posture 5.7 / 15

Agent readiness — 43/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 0 / 4

Consent & Bot Identity 3 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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.

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

AgentSkill

MCPServer

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

Idempotency

DataModel

Webhooks

Conformance

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)

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: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Cryptocurrency
- Derivatives Exchange
- Trading
- Perpetual Futures
- Market Data
- Blockchain
- WebSocket
- Financial-Services
tags_raw:
- 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

Blue Square Group Limited

Kin Score

APIs 2

GRVT Market Data API

GRVT Trading API

MCP Servers 1

Blue Square Group Limited MCP Server

Event Specifications 1

Blue Square Group Limited Streams

Security Posture 3

Blue Square Group Limited Authentication

Blue Square Group Limited Domain Security

Blue Square Group Limited Vulnerability Disclosure

Resources