# Binary Thumbs

**Canonical:** https://apis.io/providers/binary-thumbs/  
**APIs profiled:** 0

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.

## Kin Score — 5.7 / 100 (minimal)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 5.7).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

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

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/binary-thumbs/). Scores are computed from the provider's own public artifacts under a published rubric.