DeepSeek Harness (DSH)

is an agentic CLI coding harness for DeepSeek's deepseek-chat , deepseek-coder and deepseek-reasoner models, built in Elixir and Erlang/OTP.

Its architecture separates the agent's cognitive state (the Brain , an isolated GenServer process) from tool execution (the Hands ), so a failing tool call is contained by OTP supervision instead of crashing the whole session. Sessions are checkpointed and resumable with dsh -c or /resume , tools can be hot-reloaded without losing context ( /plugins reload ), and sub-tasks can run as parallel subagent processes across BEAM worker threads.

DSH ships a scoped rule engine ( /rules ), a context-reference expansion syntax ( @filename , @https://... ), first-class integration with Ragex for code indexing and semantic search ( /ragex ), and native static-analysis hooks for oeditus_credo , propwise , credo and dialyzer via /linter .

See the Usage section below to install it, or the README on GitHub for the full command reference.

Usage

Prerequisites

Elixir 1.19+, Erlang/OTP 27+, git, and on Linux, build-essential and libgit2-dev .

Install

curl -fsSL https://raw.githubusercontent.com/Oeditus/dsh/main/install.sh | bash

or from source:

git clone https://github.com/Oeditus/dsh.git
cd dsh
mix deps.get
mix dsh.install

Run

dsh