Nexus-CLI is a high-performance Golang command-line utility and local API proxy server that lets any application or coding agent connect to DeepSeek V3 (deepseek-chat) and R1 (deepseek-reasoner) models through a free web account at chat.deepseek.com. No official paid DeepSeek API key is required. The project was rewritten from scratch in pure Go, based on analysis of earlier Node.js and Python projects, and has zero runtime dependencies.
The tool includes a parallel Proof-of-Work solver that uses the DeepSeek Hash V1 algorithm (Keccak-f[1600] with SHA3-256) across CPU cores. According to the project, it solves difficulty 144,000 challenges in about 40–50 milliseconds, without CGO, WASM or Python. An interactive terminal chat streams the R1 model's reasoning in real time, and one-off queries and Unix pipe workflows are supported.
Nexus-CLI also runs a proxy server compatible with OpenAI, Anthropic and Ollama formats. Its Anthropic Messages endpoint is described as fully compatible with Claude Code and the Anthropic SDK. The proxy works with Open WebUI, Continue.dev, Cursor, Cline and other clients. A multi-account pool rotates accounts using Round-Robin scheduling to avoid HTTP 429 rate-limit errors, and a built-in doctor command checks token validity, server connectivity and solver performance.
Setup requires Go 1.20 or later. Users can link their DeepSeek account by pasting a token from browser Local Storage, by letting the tool capture a session token automatically through Chrome, or by adding the token to a .env file.
Source: Hacker News · Summarized by HeadlinesBriefing