Clients

Clients represent API consumers in FastGateway, providing identity management for access control through IP addresses and API keys.

What is a Client?

A client is an entity that consumes your APIs, such as:

• External partner applications
• Internal microservices
• Mobile applications
• Third-party integrations

Client Properties

Property	Description
Name	Human-readable identifier
Team	Owning team responsible for the client
IP Addresses	Allowed source IPs for IP-based filtering
API Keys	Secret keys for API key authentication

Client Credentials

IP Addresses

Allowed IPs:
- 192.168.1.0/24
- 10.0.0.5

API Keys

API Key: fg_live_abc123...
Header: X-API-Key

Client Attachments

Clients connect to routes through attachments, which:

• Link a client to a specific route
• Enable client-specific security policies
• Require approval before activation

┌────────┐         ┌────────────┐         ┌───────┐
│ Client │ ──────▶ │ Attachment │ ──────▶ │ Route │
└────────┘         └────────────┘         └───────┘

Team Ownership

Each client belongs to a team:

• Team members manage client credentials
• Cross-team attachments require dual approval
• Client deletion removes all attachments

Clients provide the foundation for the Client security mode, enabling per-consumer access control.