v0.2.0 — Interactive Chat Agent

v0.2.0 — Interactive Chat Agent

Adds a Claude Code-style interactive coding agent to the DeepSeek Harness.

New: deepseek-harness chat

Start an interactive coding session powered by DeepSeek V4:

export DEEPSEEK_API_KEY="sk-..."
deepseek-harness chat

Features:

• Streaming REPL with real-time tool execution display
• 8 tools: read_file, write_file, edit_file, search_content, search_files, run_command, list_directory, delete_file
• Tiered safety: direct execution for reads/edits, approval-gated for destructive ops
• Session persistence via SQLite with resume support
• Cost tracking per session (/cost)
• Subagent dispatch for parallel task execution
• Slash commands: /help, /model, /cost, /list, /exit

Adversarial Hardening

• 652 adversarial tests across 17 modules
• 25 bugs fixed, including 3 critical security vulnerabilities:
  • Path traversal bypass in file tools
  • Shell command injection in search_content and search_files
  • Various NaN/Infinity, stale state, and type confusion bugs
• 886 total tests, 0 failures

Install

git clone https://github.com/tylerbuilds/deepseek-harness.git
cd deepseek-harness
git checkout v0.2.0
npm ci && npm run build && npm run install:local -- --force

Requirements

• Node.js >= 24
• DeepSeek API key (https://platform.deepseek.com/api_keys)