Sfox

aid: sfox
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/sfox.png
name: Sfox
description: sFOX is a unified crypto prime brokerage and infrastructure platform for professional and institutional investors
  — asset managers, hedge funds, family offices, and financial institutions. It aggregates liquidity from 30+ providers across
  80+ markets for smart-routed best execution, and combines that with bankruptcy-remote custody (sFOX SAFE, via SAFE Trust
  Company), staking, credit, and post-trade settlement in one platform. sFOX exposes a REST API, a WebSocket streaming API,
  and a FIX API for trading, account management, RFQ, transfers, custody, staking, market data, and reporting; a separate
  white-label "Connect" API covers end-user onboarding, KYC/KYB, bank linking (Plaid/Dwolla), payments, withdrawals, and SSO
  for businesses building crypto products.
url: https://raw.githubusercontent.com/api-evangelist/sfox/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Cryptocurrency
- Prime Brokerage
- Trading
- Digital Asset Custody
- Liquidity
- Staking
- Institutional
- Financial-Services
- Market Data
- WebSocket
- FIX
tags_raw:
- Company
- Cryptocurrency
- Prime Brokerage
- Trading
- Digital Asset Custody
- Liquidity
- Staking
- Institutional
- Financial Services
- Market Data
- WebSocket
- FIX
apis:
- name: sFOX REST API
  description: REST API for trading, order management, RFQ, account balances and transactions, transfers/deposits/withdrawals,
    custody (sFOX SAFE), staking, post-trade settlement, market data, and reporting. Bearer-token API-key auth over HTTPS.
  humanURL: https://docs.sfox.com/introduction/getting-started
  baseURL: https://api.sfox.com
  properties:
  - type: Documentation
    url: https://docs.sfox.com/
  - type: APIReference
    url: https://docs.sfox.com/rest-api/rest-endpoints
  - type: Authentication
    url: authentication/sfox-authentication.yml
  - type: LLMsTxt
    url: llms/sfox-llms.txt
  - type: OpenAPI
    url: https://docs.sfox.com/rest-api/rest-endpoints
- name: sFOX WebSocket API
  description: Real-time streaming API for market data (order book, trades, ticker) and private account data (open orders,
    trades, balances, post-trade settlement). Authenticate then subscribe to feeds.
  humanURL: https://docs.sfox.com/websocket-api/introduction
  baseURL: https://ws.sfox.com
  properties:
  - type: Documentation
    url: https://docs.sfox.com/websocket-api/introduction
  - type: AsyncAPI
    url: asyncapi/sfox-websocket-asyncapi.yml
- name: sFOX Connect API
  description: 'White-label REST + WebSocket API for businesses: end-user management, KYC/KYB and Enhanced Due Diligence,
    bank-account linking (Plaid), ACH (Dwolla) and wire payments, withdrawals, transfers, monetization settings, and SSO (SAML).'
  humanURL: https://docs.sfox.com/connect/introduction/welcome
  baseURL: https://api.sfox.com
  properties:
  - type: Documentation
    url: https://docs.sfox.com/connect/introduction/welcome
  - type: ChangeLog
    url: changelog/sfox-changelog.yml
common:
- type: Website
  url: https://www.sfox.com/
- type: DeveloperPortal
  url: https://www.sfox.com/api/
- type: Documentation
  url: https://docs.sfox.com/
- type: APIReference
  url: https://docs.sfox.com/rest-api/rest-endpoints
- type: GettingStarted
  url: https://docs.sfox.com/introduction/getting-started
- type: Blog
  url: https://www.sfox.com/news/
- type: Support
  url: https://www.sfox.com/contact-us/
- type: SignUp
  url: https://trade.sfox.com/signup
- type: Login
  url: https://trade.sfox.com/login
- type: TermsOfService
  url: https://www.sfox.com/terms/
- type: PrivacyPolicy
  url: https://www.sfox.com/privacy/
- type: Authentication
  url: authentication/sfox-authentication.yml
- type: LLMsTxt
  url: llms/sfox-llms.txt
- type: X-MCPServerCandidate
  url: mcp/sfox-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: WellKnown
  url: well-known/sfox-well-known.yml
- type: ErrorCatalog
  url: errors/sfox-problem-types.yml
- type: Lifecycle
  url: lifecycle/sfox-lifecycle.yml
- type: RateLimits
  url: rate-limits/sfox-rate-limits.yml
- type: Conventions
  url: conventions/sfox-conventions.yml
- type: Conformance
  url: conformance/sfox-conformance.yml
- type: DataModel
  url: data-model/sfox-data-model.yml
- type: Sandbox
  url: sandbox/sfox-sandbox.yml
- type: DomainSecurity
  url: security/sfox-domain-security.yml
- type: ChangeLog
  url: changelog/sfox-changelog.yml
- type: AsyncAPI
  url: asyncapi/sfox-websocket-asyncapi.yml
- type: Webhooks
  url: asyncapi/sfox-websocket-asyncapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 14
  pass: local-v1