Setup: Codex CLI via ChatMock

Disclaimer

This specific page uses temporary drafts written and maintained by Generative AI. While verified to be accurate, please cross-verify with source code.

Connect TomoriBot to your ChatGPT account through a local OpenAI-compatible bridge using ChatMock.

ChatMock runs a local API server that accepts standard OpenAI requests, allowing TomoriBot’s custom provider to route chat completions through your account.

1. Start ChatMock

Install ChatMock by following the instructions in the ChatMock repository.

Authenticate and start the local server:

chatmock login
chatmock serve

By default, ChatMock listens on http://127.0.0.1:8000/v1.

2. Configure TomoriBot

In Discord, configure TomoriBot’s custom provider with these settings:

• Endpoint URL: http://127.0.0.1:8000/v1
• Model Name: The model identifier ChatMock expects, such as gpt-5.4 or gpt-5.3-codex

A bare http://127.0.0.1:8000 also works: TomoriBot normalizes it to /v1 before appending /chat/completions.

Enable these capability flags for ChatMock:

• Function Calling / Tools: Yes
• Image Understanding: Yes
• Video Understanding: No
• Structured Output: Yes

System prompt handling and port configuration

Codex CLI disallows custom system prompts, so TomoriBot converts system instructions into an initial user turn. Set CHATMOCK_PORT in .env to match your ChatMock port (defaults to 8000) so TomoriBot recognizes the endpoint and applies this prompt adjustment.