# RPC Overview

> Endpoint configuration and common parameters for Solana JSON-RPC methods.

Canonical: https://nolimitnodes.com/docs/api-reference/solana-rpc/overview

NoLimitNodes supports the full Solana JSON-RPC API. All methods use the standard JSON-RPC 2.0 protocol over HTTPS.

## Endpoint

```
POST https://rpc.nln.clr3.org
```

Authenticate with the `x-api-key` header on every request:

```bash
curl https://rpc.nln.clr3.org \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{"jsonrpc":"2.0","id":1,"method":"getSlot"}'
```

## Common Parameters

### `commitment`, string

The level of commitment for querying state. Options: `finalized`, `confirmed`, `processed`. Default varies by method.

### `encoding`, string

Data encoding format. Options vary by method: `base58`, `base64`, `base64+zstd`, `jsonParsed`, `json`.

### `minContextSlot`, integer

The minimum slot at which the request can be evaluated.