# Oneforty

**Canonical:** https://apis.io/providers/oneforty/  
**Website:** https://oneforty.com  
**APIs profiled:** 0

Oneforty was a Twitter application marketplace and app store founded by Laura Fitton in 2009, letting users discover, review, and purchase third-party apps and services built on the Twitter API. It raised roughly $1.9M (Flybridge Capital, Javelin Venture Partners, and angels including Dave McClure) and grew to thousands of listed apps before being acquired by HubSpot in 2011. The company is defunct — the oneforty.com domain now 301-redirects to hubspot.com and exposes no developer surface, API, documentation, or SDKs. Retained in the network as a historical portfolio-lead record only.

## Kin Score — 5.0 / 100 (minimal)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 5.0).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| 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, Twitter, App Marketplace, Social-Media, Developer Ecosystem, Acquired, Defunct

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