O11

O11 is a Y Combinator (Winter 2026) startup building custom AI software for financial services firms. Rather than forcing teams onto a new external platform, O11 embeds AI-driven automation directly into the tools finance teams already use every day — Excel, PowerPoint, Word, and other enterprise applications — so users can generate presentations, spreadsheets, and documents and automate workflows without switching contexts. The company positions itself against the observation that a majority of firms still rely on legacy software where generic bolt-on AI features fail to deliver real value. As of this profile O11 publishes a marketing site (o11.ai) but no public developer API, OpenAPI specification, SDKs, or developer documentation could be found; this remains an early-stage identity profile in the API Evangelist network awaiting a public API surface.

O11 is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Financial Services, Fintech, and Workflow Automation.

🌐 Visit website 📡 Source on GitHub
6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyArtificial IntelligenceFinancial ServicesFintechWorkflow AutomationEnterprise SoftwareDocument GenerationY Combinator

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 6.8/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 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
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/o11: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

O11 Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Company
Company

Source (apis.yml)

apis.yml Raw ↑ 
aid: o11
name: O11
description: O11 is a Y Combinator (Winter 2026) startup building custom AI software for financial services firms. Rather
  than forcing teams onto a new external platform, O11 embeds AI-driven automation directly into the tools finance teams already
  use every day — Excel, PowerPoint, Word, and other enterprise applications — so users can generate presentations, spreadsheets,
  and documents and automate workflows without switching contexts. The company positions itself against the observation that
  a majority of firms still rely on legacy software where generic bolt-on AI features fail to deliver real value. As of this
  profile O11 publishes a marketing site (o11.ai) but no public developer API, OpenAPI specification, SDKs, or developer documentation
  could be found; this remains an early-stage identity profile in the API Evangelist network awaiting a public API surface.
url: https://raw.githubusercontent.com/api-evangelist/o11/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
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Artificial Intelligence
- Financial Services
- Fintech
- Workflow Automation
- Enterprise Software
- Document Generation
- Y Combinator
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/o11.png
apis: []
common:
- type: DomainSecurity
  url: security/o11-domain-security.yml
- type: Website
  url: https://o11.ai
- type: Company
  url: https://www.ycombinator.com/companies/o11
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1