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

33.6/100 thin ▬ flat Agent 5/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

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 2026-09-08 · rubric v0.20.0

Composite quality — 33.6/100 · thin

Contract Quality 0.0 / 25

Developer Ergonomics 11.4 / 20

Access Clarity 10.0 / 20

Operational Transparency 2.4 / 13

Contract Governance 2.2 / 12

Discoverability 7.6 / 10

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

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.

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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