OneStream

OneStream is an enterprise finance platform that unifies financial and operational data into a single source of truth, spanning financial close and consolidation, planning, budgeting, forecasting and financial planning & analysis (FP&A), account reconciliation, and reporting. It applies AI and machine learning to automate core finance work so teams can focus on analysis and decision-making. For developers and integrators OneStream exposes the OneStream Web (REST) API — a client-agnostic JSON-over-HTTPS service with Authentication, Data Management, and Data Provider endpoints — secured with bearer tokens (Personal Access Tokens via OneStream IdentityServer, or OAuth 2.0 client_credentials through Microsoft Entra ID, Okta, or PingFederate) and extended through the Solution Exchange (MarketPlace, PartnerPlace, OpenPlace).

OneStream publishes 1 API on the APIs.io network. Tagged areas include Company, Software, Finance, Corporate Performance Management, and Financial Planning and Analysis.

OneStream’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, authentication, and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub

35.4/100 thin ▬ flat Agent 5/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessSelf serve

1 APIs

Company Software Finance Corporate Performance Management Financial Planning and Analysis Financial Close Consolidation Enterprise

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 35.4/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 9.7 / 17

Access Clarity 8.5 / 17

Operational Transparency 2.0 / 11

Contract Governance 1.9 / 10

Discoverability 6.2 / 9

Regulatory Posture 4.4 / 15

Agent readiness — 5/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/onestream: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

OneStream Web (REST) API

RESTful JSON web service exposing OneStream Data Automation functions: Authentication, Data Management (ExecuteSequence, ExecuteStep), and Data Provider (ADO datasets from adapt...

Security Posture 3

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

Onestream Authentication

oauth2/http · 2 schemes

SECURITY

Onestream Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Onestream Trust Center

SOC 1, SOC 2 Type II, ISO 27001, FedRAMP ATO, CSA CAIQ / STAR, NIST 800-53 (aligned)

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

Authentication

Compliance

TrustCenter

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

Community

Community

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Marketplace

Marketplace

Source (apis.yml)

aid: onestream
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: 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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/onestream.png
name: OneStream
description: OneStream is an enterprise finance platform that unifies financial and operational data into a single source
  of truth, spanning financial close and consolidation, planning, budgeting, forecasting and financial planning & analysis
  (FP&A), account reconciliation, and reporting. It applies AI and machine learning to automate core finance work so teams
  can focus on analysis and decision-making. For developers and integrators OneStream exposes the OneStream Web (REST) API
  — a client-agnostic JSON-over-HTTPS service with Authentication, Data Management, and Data Provider endpoints — secured
  with bearer tokens (Personal Access Tokens via OneStream IdentityServer, or OAuth 2.0 client_credentials through Microsoft
  Entra ID, Okta, or PingFederate) and extended through the Solution Exchange (MarketPlace, PartnerPlace, OpenPlace).
url: https://raw.githubusercontent.com/api-evangelist/onestream/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- d1-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Software
- Finance
- Corporate Performance Management
- Financial Planning and Analysis
- Financial Close
- Consolidation
- Enterprise
tags_raw:
- Company
- Software
- Finance
- Corporate Performance Management
- Financial Planning and Analysis
- Financial Close
- Consolidation
- Enterprise
- API
apis:
- name: OneStream Web (REST) API
  description: 'RESTful JSON web service exposing OneStream Data Automation functions: Authentication, Data Management (ExecuteSequence,
    ExecuteStep), and Data Provider (ADO datasets from adapters, Cube Views, SQL, and method commands). Client-agnostic; POST
    + JSON; versioned via the api-version query parameter; bearer-token authentication.'
  humanURL: https://documentation.onestream.com/docs/Content/REST%20API/REST%20API%20Overview.html
  baseURL: https://{server}/OneStreamApi/api
  properties:
  - type: Documentation
    url: https://documentation.onestream.com/docs/Content/REST%20API/REST%20API%20Overview.html
  - type: APIReference
    url: https://documentation.onestream.com/docs/Content/REST%20API/OneStream%20WebAPI%20Endpoints.html
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.onestream.com
- type: DeveloperPortal
  url: https://dev.onestream.com
- type: Documentation
  url: https://documentation.onestream.com/
- type: APIReference
  url: https://documentation.onestream.com/docs/Content/REST%20API/REST%20API%20Overview.html
- type: GettingStarted
  url: https://documentation.onestream.com/docs/Content/REST%20API/OneStream%20REST%20API%20Implementation.html
- type: Support
  url: https://www.onestream.com/support/
- type: Community
  url: https://community.onestreamsoftware.com/
- type: Blog
  url: https://www.onestream.com/blog/
- type: GitHubOrganization
  url: https://github.com/OneStreamSoftware
- type: TermsOfService
  url: https://www.onestream.com/saas-terms-and-conditions/
- type: PrivacyPolicy
  url: https://www.onestream.com/privacy-policy/
- type: SignUp
  url: https://www.onestream.com/request-demo/
- type: Marketplace
  url: https://solution-exchange.onestream.com/
- type: Authentication
  url: authentication/onestream-authentication.yml
- type: Conventions
  url: conventions/onestream-conventions.yml
- type: Lifecycle
  url: lifecycle/onestream-lifecycle.yml
- type: ChangeLog
  url: changelog/onestream-changelog.yml
- type: ErrorCatalog
  url: errors/onestream-problem-types.yml
- type: Conformance
  url: conformance/onestream-conformance.yml
- type: Compliance
  url: https://trust.onestream.com/
- type: TrustCenter
  url: security/onestream-trust-center.yml
- type: DomainSecurity
  url: security/onestream-domain-security.yml
- type: X-MCPServerCandidate
  url: mcp/onestream-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: LLMsTxt
  url: llms/onestream-llms.txt
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 10
  pass: local-v1

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