Firebase Cloud Messaging API

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

Endpoint	`https://api.apis.guru/v2/specs/googleapis.com/fcm/v1/openapi.json`
Trust	Not checked yet
Pricing	See the provider
docs url	https://fcm.googleapis.com/$discovery/rest?version=v1
auth	none
source	apis_guru

Use it

Endpoint

https://api.apis.guru/v2/specs/googleapis.com/fcm/v1/openapi.json

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/3184

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}