aid: activ-financial-systems
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/activ-financial-systems.png
name: ACTIV Financial Systems
description: 'ACTIV Financial Systems is a provider of real-time and historical financial market data,
  best known for the ACTIV Feed consolidated multi-asset market data feed delivering global equities, options,
  futures, foreign exchange, and fixed income content with associated analytics and low-latency delivery to
  trading firms, banks, and financial applications. ACTIV Financial was acquired by Options Technology
  (Options-IT) in 2021 and its market data capabilities are delivered as part of the Options Atlas platform;
  www.activfinancial.com now redirects to www.options-it.com. A live public developer surface remains: the
  OnePlatform Web API (One API), a WebSocket/WebAssembly JavaScript API with a developer portal at
  weboneapi.activfinancial.com and 25 first-party packages on npm under the @activfinancial scope, with
  gateway hosts and credentials provisioned per customer rather than self-serve.'
url: https://raw.githubusercontent.com/api-evangelist/activ-financial-systems/refs/heads/main/apis.yml
x-type: company
x-source: bessemer-venture-partners-portfolio
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-22'
x-acquired-by: options-technology
x-acquirer-url: https://www.options-it.com
tags:
- Company
- Fintech
- Market Data
- Financial Data
- Real-Time Data
- Streaming
- WebSocket
- Trading Infrastructure
- Options Technology
apis:
- name: ACTIV OnePlatform Web API (One API)
  description: WebSocket/WebAssembly JavaScript API for the ACTIV OnePlatform (Options Atlas),
    delivering real-time streaming subscriptions, snapshots, queries, and time-series
    (tick, intraday bar, history bar) market data through a session contract (connect
    to a OneApi Gateway, then Session.snapshot/subscribe/query/timeSeries). Not REST -
    the machine-readable contract is the TypeDoc JSON shipped in the
    "@activfinancial/one-api" npm package.
  humanURL: https://weboneapi.activfinancial.com/
  baseURL: https://weboneapi.activfinancial.com
  tags:
  - Market Data
  - Real-Time Data
  - Streaming
  - WebSocket
  - Time Series
  properties:
  - type: Documentation
    url: https://weboneapi.activfinancial.com/documentation
  - type: APIReference
    url: https://weboneapi.activfinancial.com/documentation
  - type: GettingStarted
    url: https://weboneapi.activfinancial.com/tutorials
  - type: Sandbox
    url: https://weboneapi.activfinancial.com/playground
  - type: SourceCode
    url: https://github.com/activfinancial/one-api-examples
  - type: ErrorCatalog
    url: errors/activ-financial-systems-error-codes.yml
  - type: Authentication
    url: authentication/activ-financial-systems-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.activfinancial.com
- type: DeveloperPortal
  url: https://weboneapi.activfinancial.com/
- type: Documentation
  url: https://weboneapi.activfinancial.com/documentation
- type: APIReference
  url: https://weboneapi.activfinancial.com/documentation
- type: GettingStarted
  url: https://weboneapi.activfinancial.com/tutorials
- type: Sandbox
  url: sandbox/activ-financial-systems-sandbox.yml
- type: GitHubOrganization
  url: https://github.com/activfinancial
- type: Support
  url: https://www.options-it.com/support
- type: Blog
  url: https://www.options-it.com/news
- type: PrivacyPolicy
  url: https://www.options-it.com/privacy
- type: StatusPage
  url: https://status.options-it.com
- type: Lifecycle
  url: lifecycle/activ-financial-systems-lifecycle.yml
- type: Packages
  url: packages/activ-financial-systems-packages.yml
- type: SDKs
  url: packages/activ-financial-systems-packages.yml
- type: Components
  url: components/activ-financial-systems-components.yml
- type: ErrorCatalog
  url: errors/activ-financial-systems-error-codes.yml
- type: Authentication
  url: authentication/activ-financial-systems-authentication.yml
- type: WellKnown
  url: well-known/activ-financial-systems-well-known.yml
- type: LLMsTxt
  url: llms/activ-financial-systems-llms.txt
- type: DomainSecurity
  url: security/activ-financial-systems-domain-security.yml
x-enrichment:
  date: '2026-07-22'
  status: enriched
  pass: round-2026-06-20
  note: contract discovery found the live OnePlatform Web API portal (weboneapi.activfinancial.com),
    25 first-party npm packages, TypeDoc contract in-package (no OpenAPI - WebSocket/WASM
    session API), 98-member StatusCode registry, Options Technology status page.