Client integration guides

---
title: Client integration guides
description: Choose the right Relyven setup for CC Switch, Claude Code, Codex, Cline, or an API client.
lastUpdated: 2026-07-29
---

Choose the row that matches how you run the client. CC Switch uses the service root; direct OpenAI-compatible clients use the `/v1` base URL.

| Client | Setup | Base URL | Guide |
|---|---|---|---|
| CC Switch | Manage Claude and Codex providers in one app | `https://api.relyven.com` | [CC Switch setup](/en/integrations/cc-switch/) |
| Claude Code | Direct Anthropic-compatible setup | `https://api.relyven.com` | [Claude Code custom API](/en/integrations/claude-code/) |
| Codex | Direct Responses provider | `https://api.relyven.com/v1` | [Codex custom provider](/en/integrations/codex/) |
| Cline | Custom OpenAI-compatible provider | `https://api.relyven.com/v1` | [Cline custom provider](/en/integrations/cline/) |

## API development

For SDKs and applications, start with the [API quickstart](/en/quickstart/) and [API overview](/en/api/overview/). Current models and prices are available in the [dashboard](https://app.relyven.com/pricing?lang=en).

- [Authentication](/en/api/authentication/)
- [Responses API](/en/api/responses/)
- [Anthropic Messages](/en/api/messages/)
- [Chat Completions](/en/api/chat-completions/)
- [Image generation and edits](/en/api/images/)
- [Error handling](/en/api/errors/)

You can share these links with a teammate or coding assistant. Each person still needs their own Relyven key. Never put a real key in a URL or prompt.

Choose the row that matches how you run the client. CC Switch uses the service root; direct OpenAI-compatible clients use the /v1 base URL.

Client	Setup	Base URL	Guide
CC Switch	Manage Claude and Codex providers in one app	`https://api.relyven.com`	CC Switch setup
Claude Code	Direct Anthropic-compatible setup	`https://api.relyven.com`	Claude Code custom API
Codex	Direct Responses provider	`https://api.relyven.com/v1`	Codex custom provider
Cline	Custom OpenAI-compatible provider	`https://api.relyven.com/v1`	Cline custom provider

API development

For SDKs and applications, start with the API quickstart and API overview. Current models and prices are available in the dashboard.

You can share these links with a teammate or coding assistant. Each person still needs their own Relyven key. Never put a real key in a URL or prompt.