Binary Thumbs

Binary Thumbs (operating name "Binary Thumb", Y Combinator Summer 2012) was a San Francisco startup founded in 2012 by Josh Leong, Michael Lin, and Matt Monson to reinvent the spreadsheet for touch devices. Its single product, Grid, was a collaborative grid-based spreadsheet and organizational app for iPad and iPhone that let people keep notes, pictures, people, and places in a freeform grid rather than rigid rows and columns. The company raised roughly $2.15M across a 2012 YC round and a 2013 seed, with participation from angel and institutional investors, and appears on the Andreessen Horowitz public investment list. Y Combinator now lists the company as inactive; Josh Leong led it as CEO from 2012 to 2016. Binary Thumb never shipped a public API, developer portal, or documentation surface -- it was a consumer iOS product company. Its lasting public technical footprint is the BinaryThumb GitHub organization and a handful of open-source React and JavaScript utility libraries published to npm.

Binary Thumbs is profiled on the APIs.io network. Tagged areas include Company, Inactive, Y Combinator, Productivity, and Spreadsheets.

📡 Source on GitHub

5.7/100 minimal ▬ flat Agent 0/100 human only library Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Inactive Y Combinator Productivity Spreadsheets Mobile iOS Consumer Software Open-Source

Kin Score

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

Composite quality — 5.7/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.7 / 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.

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Resources

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Source (apis.yml)

aid: binary-thumbs
name: Binary Thumbs
description: Binary Thumbs (operating name "Binary Thumb", Y Combinator Summer 2012) was a San Francisco startup founded in
  2012 by Josh Leong, Michael Lin, and Matt Monson to reinvent the spreadsheet for touch devices. Its single product, Grid,
  was a collaborative grid-based spreadsheet and organizational app for iPad and iPhone that let people keep notes, pictures,
  people, and places in a freeform grid rather than rigid rows and columns. The company raised roughly $2.15M across a 2012
  YC round and a 2013 seed, with participation from angel and institutional investors, and appears on the Andreessen Horowitz
  public investment list. Y Combinator now lists the company as inactive; Josh Leong led it as CEO from 2012 to 2016. Binary
  Thumb never shipped a public API, developer portal, or documentation surface -- it was a consumer iOS product company. Its
  lasting public technical footprint is the BinaryThumb GitHub organization and a handful of open-source React and JavaScript
  utility libraries published to npm.
url: https://raw.githubusercontent.com/api-evangelist/binary-thumbs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
x-status: inactive
x-status-source: https://www.ycombinator.com/companies/binary-thumb
x-status-note: 'Y Combinator lists the company (batch S12, product "Grid") as Inactive. The Grid iOS App Store listing returns
  404 and the historical binarythumb.com domain now serves unrelated affiliate/gambling SEO content, so it is NOT wired as
  a Website or DeveloperPortal property. No API surface exists: no OpenAPI, docs, auth, sandbox, changelog, status page, or
  event surface were found, so no artifact pointers are emitted for those types.'
x-founded: '2012'
x-founders:
- Josh Leong
- Michael Lin
- Matt Monson
x-location: San Francisco, CA, United States
x-yc-batch: S12
deliveryModel:
  model: library
  open_source: false
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - none
  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
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
image: https://github.com/BinaryThumb.png
tags:
- Company
- Inactive
- Y Combinator
- Productivity
- Spreadsheets
- Mobile
- iOS
- Consumer Software
- Open-Source
tags_raw:
- Company
- Inactive
- Y Combinator
- Productivity
- Spreadsheets
- Mobile
- iOS
- Consumer Software
- Open Source
apis: []
common:
- type: GitHubOrganization
  name: Binary Thumb on GitHub
  url: https://github.com/BinaryThumb
- type: Packages
  name: Binary Thumb open-source npm packages
  url: packages/binary-thumbs-packages.yml
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

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