> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hitheo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# API Keys

> Create and manage API keys from the dashboard.

Navigate to **API Keys** in the dashboard sidebar to manage your keys.

## Create a Key

1. Click **Create Key**
2. Enter a name (e.g., "Production", "Development")
3. Optionally set **scopes** to restrict what the key can access (e.g., completions only)
4. Optionally set **rate limits** and **spending caps** for this specific key
5. Copy the key — **it won't be shown again**

<Warning>
  Store API keys securely. Use environment variables or a secrets manager. Never commit keys to source control.
</Warning>

## Key Formats

| Prefix          | Environment | Billing                       |
| --------------- | ----------- | ----------------------------- |
| `theo_sk_live_` | Production  | Billed per token              |
| `theo_sk_test_` | Sandbox     | No billing, lower rate limits |

## Key Management

* **Revoke** — instantly disable a key (takes effect within seconds)
* **Rename** — update the display name
* **View usage** — see per-key usage statistics, cost, and request counts
* **Edit limits** — adjust rate limits and spending caps per key

## Key Rotation

To rotate a key without downtime:

1. Create a new key
2. Update your environment variables
3. Verify traffic flows through the new key
4. Revoke the old key

Both keys work simultaneously during the transition.

## Programmatic Key Management

You can also create keys via the API: [Create API Key](/api-reference/keys/create).