Subset

Subset is an AI-powered spreadsheet editor built for finance professionals, letting them generate P&L statements from PDFs, build DCF and returns models, and process CIMs and teasers through natural-language instructions inside a familiar spreadsheet interface. Built in NYC and SF by former Wall Street professionals, Subset targets investment and financial-modeling workflows. It was surfaced as a portfolio company of Index Ventures and added to the API Evangelist network. As of this enrichment pass Subset ships a consumer/prosumer web application and help documentation but no public developer API, OpenAPI specification, SDKs, or webhook surface.

Subset is profiled on the APIs.io network. Tagged areas include Company, Future Of Work, Spreadsheet, Finance, and Financial Modeling.

Subset’s developer surface includes documentation, signup flow, support, and 2 more developer resources.

🌐 Visit website 📡 Source on GitHub

8.2/100 minimal ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Future Of Work Spreadsheet Finance Financial Modeling Artificial Intelligence Productivity

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 8.2/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.9 / 20

Access Clarity 1.3 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

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/subset: 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 →

Security Posture 1

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

Subset Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: subset
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: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/subset.png
name: Subset
description: Subset is an AI-powered spreadsheet editor built for finance professionals, letting them generate P&L statements
  from PDFs, build DCF and returns models, and process CIMs and teasers through natural-language instructions inside a familiar
  spreadsheet interface. Built in NYC and SF by former Wall Street professionals, Subset targets investment and financial-modeling
  workflows. It was surfaced as a portfolio company of Index Ventures and added to the API Evangelist network. As of this
  enrichment pass Subset ships a consumer/prosumer web application and help documentation but no public developer API, OpenAPI
  specification, SDKs, or webhook surface.
url: https://raw.githubusercontent.com/api-evangelist/subset/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- index-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Future Of Work
- Spreadsheet
- Finance
- Financial Modeling
- Artificial Intelligence
- Productivity
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/subset-domain-security.yml
- type: Website
  url: https://www.subset.so
- type: Documentation
  url: https://docs.subset.so
- type: SignUp
  url: https://chat.subset.so
- type: Support
  url: https://discord.gg/9ec5thC7Np
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1

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