# Cloud API

The **Cloud API** allows users to access the bloXroute **Blockchain Distribution Network (BDN)** without installing or maintaining a local Gateway. It’s ideal for applications that require fast, reliable access to transaction and block data at scale.

### **Endpoints**

**Transaction Submission**\
Use: `https://api.blxrbdn.com`\
DNS automatically routes requests to the instance closest to your application.

**Streaming Data**\
Use a regional endpoint based on your deployment:

* **Ethereum:** `<REGION>.eth.blxrbdn.com`
* **BSC:** `<REGION>.bsc.blxrbdn.com`

#### **Available Regions**

These apply to streaming endpoints and are resolved automatically unless specified:

| Region Name      | DNS Prefix  | Location             |
| ---------------- | ----------- | -------------------- |
| US - Virginia    | `virginia`  | US East (AWS)        |
| England - London | `uk`        | Europe (AWS)         |
| Singapore        | `singapore` | Asia Pacific (AWS)   |
| Germany          | `germany`   | Europe Central (AWS) |
| Japan            | `tokyo`     | Asia Pacific (AWS)   |

#### **Recommended: gRPC Streaming**

For each region, streaming is available via **WebSocket (WS)** or **gRPC**.\
gRPC may provide better performance and lower latency compared to WebSocket.

**Example (Virginia – Ethereum):**

* **WebSocket:**\
  `wss://virginia.eth.blxrbdn.com/ws`
* **gRPC:**\
  `virginia.eth.blxrbdn.com:5005`


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.bloxroute.com/core-solutions/accessing-the-bdn/cloud-api.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.