# Open Hub API (Ohloh)

**Canonical:** https://apis.io/apis/ohloh/open-hub-api/  
**Provider:** Ohloh — https://apis.io/providers/ohloh/  
**Base URL:** https://www.openhub.net  
**Documentation:** https://github.com/blackducksoftware/ohloh_api

Open Hub API (Ohloh) is published by [Ohloh](https://apis.io/providers/ohloh/) on the [APIs.io](https://apis.io/) network. Tagged areas include Open-Source, Project, Contributors, and Code Analytics. The published artifact set on APIs.io includes API documentation, an API reference, authentication docs, and rate-limit docs.

The REST API for Black Duck Open Hub (formerly Ohloh). Returns XML wrapped in a <response> root element that always carries a <status> (success/failed) and an <error> on failure. Requests append .xml to a resource URL and pass the api_key HTTP parameter; write operations and private account data use OAuth 2.0. Collections return at most 25 items per page (page parameter, one-based; query and sort parameters) and report items_returned, items_available and first_item_position. Resources include projects, accounts, organizations, analyses, languages, stacks, factoids, kudos, positions and contributor facts.

## Machine-readable artifacts (6)

- **Documentation** — https://github.com/blackducksoftware/ohloh_api
- **APIReference** — https://github.com/blackducksoftware/ohloh_api/tree/master/reference
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/ohloh/refs/heads/main/authentication/ohloh-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/ohloh/refs/heads/main/conventions/ohloh-conventions.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/ohloh/refs/heads/main/rate-limits/ohloh-rate-limits.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/ohloh/refs/heads/main/apis.yml

## Tags

Open-Source, Project, Contributors, Code Analytics

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/ohloh/open-hub-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/ohloh/.