# Introduction

OpenAI-compatible AI gateway with Turkish personal data masking. Send your first request in minutes.

Gurubase Siper consists of three parts: an OpenAI-compatible AI gateway, personal data masking for Turkish text, and a management panel. Requests are masked in Turkey before they go to the external language model. It is designed for teams that work with text containing personal data and do not want to send that data as-is to models abroad.

Diagram: your application's requests reach Gurubase Gateway, which is hosted in Türkiye. Siper PII Masking masks personal data and the raw data stays there; only masked text reaches the external language model.

In practice, masking looks like this:

The example "Ayşe Demir, TCKN 10000000214, başvuru durumunu soruyor." becomes "<PERSON_1>, TCKN <TCKN_1>, başvuru durumunu soruyor." after masking.

## Start here

- [AI Gateway](/docs/en/ai-gateway/): What a single point of passage gives you: masking, visibility, resilience, budget.
- [Getting started](/docs/en/getting-started/): Get your virtual key and send your first request with the OpenAI SDK.
- [Concepts](/docs/en/concepts/): How masking works, the placeholder format, fail-closed behavior, and data sovereignty.
- [Categories](/docs/en/categories/): The 26 masked personal data categories, with synthetic examples.
- [Guides](/docs/en/guides/gateway-integration/): Switching with the OpenAI SDK, streaming, and mask-only usage.
- [API reference](/docs/en/api/gateway/): Full reference for the Gateway and masking endpoints.
- [Security](/docs/en/security/): Data retention approach, audit trail, and access controls.

To create an account, [contact us](https://siper.gurubase.ai/iletisim); if your account is ready, you can sign in to the [panel](https://gateway-tr.gurubase.io) and generate your virtual key.

Siper is part of the [Gurubase](https://gurubase.io) product family. Gurubase lets you build AI agents that draw on your organization’s own knowledge sources, cite a source in every answer, and decline to answer when the context is weak; Siper is the family’s Turkish personal data protection layer.

## For AI agents

These docs are also available in machine-readable form for AI agents and LLMs:

- [llms.txt](/docs/llms.txt): a page index with summaries
- [llms-full.txt](/docs/llms-full.txt): the full text of every page in one file
- Each page’s raw Markdown: append `.md` to its URL (for example [getting-started.md](/docs/en/getting-started.md))

These files are generated automatically on every build and stay in sync with the content.