> For the complete documentation index, see [llms.txt](https://www.bluegamma.io/documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.bluegamma.io/documentation/integrations/api.md).

# API

Programmatic access to live and historical swap rates, forward curves, discount factors, zero rates, FX and government bond yields over a REST API authenticated with an API key.

The BlueGamma API gives you programmatic access to real-time interest rate data, including forward curves, swap rates, discount factors and more.

{% hint style="info" %}
The curves returned by the API are **not** the same as the curves shown on the public [bluegamma.io](https://www.bluegamma.io) marketing pages. See [Public Website Curves vs. Platform Curves](/documentation/methodology/public-website-curves-vs-platform-curves.md) for details.
{% endhint %}

#### ⚙️ What You Can Do

* **Swap Rates** – Get par swap rates for SOFR, EURIBOR, CORRA, SONIA, NIBOR, and others.
* **Forward Rates** – Retrieve implied rates between any two future dates or tenors.
* **Forward Curves** – Generate a full forward curve over custom periods and tenors.
* **Discount Factors** – Pull discount factors or curves to power PV and risk models.
* **FX & Government Yields** – Access FX spot/forward rates and government zero curves.

#### 🔐 Authentication

All API requests must include your API key in the `x-api-key` header.

```
GET /v1/swap_rate
Host: api.bluegamma.io
x-api-key: your_api_key_here
```

#### 📚 Explore the Docs

Use the guides in the sidebar to learn how to:

* Fetch live or historical swap rates
* Get forward curves and forward rates
* Validate results against Bloomberg
* Integrate BlueGamma into your internal tools

Or jump straight to the [API Reference](/documentation/integrations/api/api-reference.md) for full details.

#### 🚀 Get Access

Issue your own key from the app: sign in at [app.bluegamma.io](https://app.bluegamma.io), open **API Keys** under Developer, and click **Create API key**. Trial accounts and plans that include API access can issue one. See [Authentication](/documentation/integrations/api/authentication.md) for the walkthrough.

For questions about limits or licensing, [book a call](https://app.lemcal.com/@alivohra/discuss-data-license?back=1) or email <support@bluegamma.io>.


---

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