1
Sign in to DeepSeek Platform
Open the DeepSeek API Keys page to create or copy the model API key used by Reasonix. Keep that key out of public posts, screenshots, and repositories.
open https://platform.deepseek.com/api_keys
Clerk authentication
Keep Reasonix login separate from DeepSeek API keys
Use Clerk only for the Reasonix session. Configure DeepSeek API keys separately in your local Reasonix CLI.
Loading account session...
CLI credentials stay separate
Reasonix CLI still uses your DeepSeek API key locally. Do not paste provider API keys into this account page.
Reasonix / DeepSeek API Key
Clerk authenticates the site account. API keys stay local.
2
Start Reasonix inside your project
DeepSeek recommends running npx from the target project directory so Reasonix can read the workspace and build local project memory.
cd /path/to/my-project npx reasonix code
3
Switch to Pro in the TUI
The default path uses DeepSeek-V4-Flash for cost control. For stronger reasoning, use /pro or /preset max inside the TUI.
/pro /preset max /help
Safe default
Do not put a DeepSeek API key into a public repository, screenshot, or bug report. When you need a key, open DeepSeek Platform directly:API Keys.