# SDK Junction — Open Source SDK Directory

SDK Junction indexes 2,162 open-source SDKs covering 2,529 API providers.

## Counts by language

- TypeScript: 265 SDKs
- Python: 256 SDKs
- Java: 211 SDKs
- JavaScript: 189 SDKs
- PHP: 177 SDKs
- C#: 175 SDKs
- unknown: 169 SDKs
- Go: 122 SDKs
- Objective-C: 90 SDKs
- Swift: 83 SDKs
- Kotlin: 68 SDKs
- C++: 61 SDKs
- HTML: 43 SDKs
- C: 38 SDKs
- Rust: 32 SDKs

## Data model (SDK record)

- name: Package name (e.g. boto3, axios)
- language: Primary programming language
- description: Plain-text description
- stars / forks: GitHub quality signals
- updatedAt: ISO-8601 last-update timestamp
- license: SPDX license identifier
- apis[]: API providers this SDK wraps — each has providerName, docsUrl, authType, categories[]
- releases[]: Version history — tag, publishedAt, prerelease flag
- vulns[]: Security advisories from OSV.dev — id, severity, summary
- registry: Language-specific registry stats (npm downloads, PyPI downloads, etc.)
- scorecard: OpenSSF scorecard data

## Key URLs

- Home: https://sdkjunction.com/
- All SDKs: https://sdkjunction.com/sdks/
- All APIs: https://sdkjunction.com/apis/
- Languages: https://sdkjunction.com/languages/
- Categories: https://sdkjunction.com/categories/
- Sitemap: https://sdkjunction.com/sitemap.xml

## URL patterns

- SDK detail page: https://sdkjunction.com/sdks/{slug}/
- Install command (plain text): https://sdkjunction.com/sdks/{slug}/install.txt
- API detail page: https://sdkjunction.com/apis/{slug}/
- Language page: https://sdkjunction.com/languages/{language}/
- Integration page: https://sdkjunction.com/integrations/{api-slug}/{sdk-slug}/

## Example usage for agents

# Get install command for a known SDK
GET https://sdkjunction.com/sdks/boto3/install.txt

# Find all Python SDKs — browse the language page
https://sdkjunction.com/languages/python/

## Data freshness

SDKs are re-indexed weekly from GitHub, npm, PyPI, and other public registries.