# Litport documentation

> Public proxy and read-only account API documentation for integrators and coding agents.

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## Documentation

- [Litport documentation](https://litport.net/docs.md): Integrate Litport proxies and account APIs with precise, current contracts.
- [Tokens, proxy products, and hubs](https://litport.net/docs/proxy-concepts.md): Understand Litport proxy credentials, unlimited and PPG products, hubs, and ingress protocols.
- [Connection, request, and speed limits](https://litport.net/docs/proxy-limits.md): Learn exactly how concurrent connections, request rate, and speed are measured and enforced.
- [Proxy error reference](https://litport.net/docs/proxy-errors.md): Diagnose every Litport proxy error code across HTTP and SOCKS5 ingress.
- [Free proxy API](https://litport.net/docs/free-proxy-api.md): Retrieve Litport's public free-proxy list in JSON, CSV, and text formats.
- [Pay-per-GB proxy parameters](https://litport.net/docs/ppg-proxies.md): Build current PPG proxy usernames with country, region, city, and session parameters.
- [Account API](https://litport.net/docs/api.md): Authenticate to Litport's versioned, read-only account API.
- [Account API errors](https://litport.net/docs/api/errors.md): Handle Litport account API error envelopes, status codes, retry guidance, and request IDs.
- [List existing tokens](https://litport.net/docs/api/tokens.md): List existing Litport proxy-token metadata and credentials.
- [Read token usage](https://litport.net/docs/api/usage.md): Retrieve customer-visible usage totals, time buckets, and optional domain breakdowns for an owned token.

## Machine-readable contract

- [OpenAPI](https://litport.net/docs/openapi.json): OpenAPI 3.1 contract for public and authenticated APIs.