# Cronos API
> Real-time on-chain data for Cronos (chain-id 25) — the EVM-compatible Layer-1 (Cosmos SDK / Ethermint) backed by Crypto.com, using CRO as its native coin. Query live network status (latest block height, network id, client version), fetch any block by height or the latest one (timestamp, transaction count, gas used / limit, base fee, miner), read the current gas price in wei and gwei, and look up the native CRO balance and transaction count of any address. A keyless, no-account JSON wrapper over the canonical Cronos JSON-RPC node — decoded from hex into plain decimals and human-readable CRO so you do not have to. Ideal for explorers, wallets, dashboards, gas estimators and analytics on Cronos.

## Authentication
All requests require your oanor API key in the `x-oanor-key` header. Get one at https://www.oanor.com/developer/keys.

```bash
curl -H "x-oanor-key: oanor_live_…" "https://api.oanor.com/cronos-api/..."
```

## Pricing
- **Free** (Free) — 4,600 calls/Mo, 3 req/s
- **Basic** ($14/Mo) — 58,500 calls/Mo, 10 req/s
- **Pro** ($38/Mo) — 223,000 calls/Mo, 25 req/s
- **Mega** ($77/Mo) — 911,000 calls/Mo, 60 req/s

## Endpoints

### Network

#### `GET /v1/status` — Network status (latest block, chain id, client version)

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/cronos-api/v1/status"
```

### Blocks

#### `GET /v1/block` — Block by height (or latest)

**Parameters:**
- `number` (query, optional, string) — Block height (decimal or 0x-hex), or "latest" Example: `10000000`

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/cronos-api/v1/block?number=10000000"
```

### Gas

#### `GET /v1/gas` — Current gas price (wei + gwei)

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/cronos-api/v1/gas"
```

### Accounts

#### `GET /v1/balance` — Native CRO balance and transaction count of an address

**Parameters:**
- `address` (query, required, string) — 0x-prefixed 40-hex EVM address Example: `0x000000000000000000000000000000000000dEaD`

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/cronos-api/v1/balance?address=0x000000000000000000000000000000000000dEaD"
```

### Meta

#### `GET /v1/meta` — Service metadata

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/cronos-api/v1/meta"
```


---
Marketplace page: https://www.oanor.com/api/cronos-api
OpenAPI spec: https://www.oanor.com/api/cronos-api/openapi.json