sekrun is a coding agent CLI powered by DeepSeek V4 Flash. It runs entirely on Node.js with zero npm dependencies — just the standard library.
It can read, write, search, and edit files, execute shell commands, and interact with the user across multiple turns, all driven by the DeepSeek function-calling API.
npm install -g sekrunAfter installation, the command sekrun is available globally.
- Node.js >= 18 (native
fetchsupport required) - A DeepSeek API key
# Set your API key
export DEEPSEEK_API_KEY=sk-your-key-here
# Run a one-shot task
sekrun "implement a fizzbuzz function in Python"
# Or start an interactive REPL session
sekrun| Option | Default | Description |
|---|---|---|
--cwd <path> |
current directory | Project root directory |
--max-output <n> |
8192 | Truncate tool output to n bytes |
--max-tool-history <n> |
4096 | Keep at most n bytes of each tool result in conversation history |
--max-history-messages <n> |
40 | Compact older history above n messages |
--max-steps <n> |
80 | Max agent steps per user message |
--verbose |
false | Print token/cache usage after each step |
--help |
— | Show help |
- The CLI sends your request to the DeepSeek API with a set of available tools.
- The model responds with tool calls (read file, write file, search, shell, etc.).
- Each tool call is executed locally and the result is fed back to the model.
- The loop continues until the model produces a final answer or the step limit is reached.
MIT