# Firebase Cloud Messaging API

**Provider:** Firebase Cloud Messaging
**Category:** auth
**Base URL:** `https://fcm.googleapis.com/`
**Auth:** oauth2 — `Authorization: Bearer <access_token>`
**Rate Limit:** 600K req/min (server sends)
**Free Tier:** Yes — available
**Pricing:** Enterprise / contact sales (subscription)
**Docs:** https://google.com

## Description

FCM send API that provides a cross-platform messaging solution to reliably deliver messages at no cost.

## Endpoints

| Method | Endpoint | Description |
|--------|----------|-------------|
| POST | `https://fcm.googleapis.com//v1/{parent}/messages:send` | Send a message to specified target (a registration token, topic or condition). |

## Authentication

OAuth 2.0 — obtain an access token via the authorization flow

```
Authorization: Bearer <access_token>
```

## Sample Request

```bash
curl -X GET 'https://fcm.googleapis.com//v1/{parent}/messages:send' \
  -H 'Authorization: Bearer <access_token>'
```

## Sample Response

```json
{}
```

## Pricing Details

Free — Firebase Cloud Messaging (FCM) is completely free. No limits on number of messages sent to iOS, Android, or web targets via the API.

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*Source: [API Map](https://apimap.dev/apis/firebase-cloud-messaging/) — CC BY 4.0*