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

# POST /inviteCollaborator

> Invite a user by email to edit a presentation as a dev collaborator.

<Note>
  The CLI wrapper is [`slideless invite`](/cli/commands#slideless-invite).
</Note>

## Endpoint

```
POST https://europe-west1-slideless-ai.cloudfunctions.net/inviteCollaborator
```

## Authentication

`Authorization: Bearer <key>` — owner only.

## Request body

| Field            | Type   | Required | Notes                                     |
| ---------------- | ------ | -------- | ----------------------------------------- |
| `presentationId` | string | yes      | Presentation to invite into.              |
| `email`          | string | yes      | Invitee's email (lowercased server-side). |
| `message`        | string | no       | Personal message in the invite email.     |

## Response

```json theme={"theme":{"light":"github-light","dark":"github-dark"}}
{
  "success": true,
  "data": {
    "collaboratorId": "01H...",
    "email": "alice@example.com",
    "status": "pending",            // or "active" if user already exists
    "userId": null,
    "inviteAlreadyExisted": false
  }
}
```

* `active` — the email maps to an existing Slideless user; access granted immediately.
* `pending` — a row was stored; the `onUserDocumentCreated` trigger claims it on signup.

## Errors

| Status | Code                         | Cause                                                  |
| ------ | ---------------------------- | ------------------------------------------------------ |
| 400    | `invalid-email`              | Malformed email                                        |
| 403    | `permission-denied`          | Not the owner                                          |
| 404    | `not-found`                  | `presentationId` unknown                               |
| 429    | `collaborator-limit-reached` | Hit the per-presentation cap (10 active+pending in v1) |