## Authentication

All current Replify APIs use the same authentication model:

- Send your API key secret in the **`x-api-key`** header on every request.
- API Gateway validates the key and routes the request to your organization.

For endpoints that accept a JSON body, also send:

```
Content-Type: application/json
```

**Production base URL:**`https://api.heylibby.com/api/v1`Individual API pages document paths, payloads, and responses. The [legacy Outbound Phone Calling API](https://docs.replify.ai/api-documentation/outbound-phone-calling-api-legacy) uses a different auth flow and is being retired.

## API keys

Create and manage keys in the portal — you do not need to contact support.

1. Open [API Key Management](https://app.replify.ai/settings/api-keys) in your organization settings.
2. Click **\+ Create new API key** and give it a descriptive name (e.g. “CRM integration” or “Outbound calls”).
3. **Copy the secret key immediately** and store it in your password manager, secrets store, or integration config.

The full API key is **only shown once** at creation. After you leave the page, you cannot view it again. If you lose it, create a new key and update your integration.

You can create up to **10 API keys** per organization. The same key works across supported APIs unless you choose to rotate or separate keys by integration.See [API Keys](https://docs.replify.ai/integrations/api-keys) for limits, deletion, and security practices.

## Available APIs

**Migrating from the legacy outbound API?** If you use the [legacy Outbound Phone Calling API](https://docs.replify.ai/api-documentation/outbound-phone-calling-api-legacy), switch to the current API by **July 1, 2026**. Your account manager can help with endpoint and testing changes.

[**Outbound Phone Calling** \ \ 
\ 
Schedule a single immediate outbound call for an assistant — testing, demos, or one-off dials.](https://docs.replify.ai/api-reference/outbound-calling/initiate-outbound-call)

[**Campaign Service** \ \ 
\ 
Add, update, or remove contacts in campaigns programmatically.](https://docs.replify.ai/api-reference/campaigns/manage-campaign-contacts)

We will add more APIs over time. Each will use the same `x-api-key` authentication unless noted otherwise on its reference page.

## API feedback

Looking for an endpoint or integration we do not offer yet? Email us at [help@replify.ai](mailto:help@replify.ai) with **API feedback** in the subject line (or mention APIs in the message). Tell us what you are trying to build — we use customer input to prioritize what we ship next.