by SafeRL-Lab
Nano Claude Code: A Fast, Easy-to-Use Python Reimplementation of Claude Code Supporting Any Model.
# Add to your Claude Code skills
git clone https://github.com/SafeRL-Lab/nano-claude-codeGuides for using ai agents skills like nano-claude-code.
Last scanned: 5/25/2026
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"issues": [],
"status": "PASSED",
"scannedAt": "2026-05-25T08:23:22.878Z",
"semgrepRan": false,
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}nano-claude-code is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by SafeRL-Lab. Nano Claude Code: A Fast, Easy-to-Use Python Reimplementation of Claude Code Supporting Any Model. It has 370 GitHub stars.
Yes. nano-claude-code passed SkillsLLM's automated security scan — a dependency vulnerability audit plus prompt-injection heuristics — with no high-severity issues. You can read the full report in the Security Report section on this page.
Clone the repository with "git clone https://github.com/SafeRL-Lab/nano-claude-code" and add it to your Claude Code skills directory (see the Installation section above).
nano-claude-code is primarily written in Python. It is open-source under SafeRL-Lab on GitHub, so you can review or fork the full source.
Yes. SkillsLLM lists many other AI Agents skills you can browse and compare side by side. Open the AI Agents category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh nano-claude-code against similar tools.
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10:04 PM, Apr 05, 2026 (v3.05.5): Interactive Ollama Model Picker, Windows fixes, /brainstorm command
/api/tags) and presents a numbered model selector so you can switch to an available model and retry without restarting. Cancelling the picker aborts gracefully without crashing the REPL._read, _write, and _edit in tools.py now force UTF-8 encoding and newline="" to prevent encoding failures with accented characters and double-CRLF on Windows. _edit detects pure-CRLF files (all \n are part of \r\n) and restores their line endings after edit; mixed-line-ending files are left as-is to avoid corruption./brainstorm [topic] runs a multi-persona AI debate with 5 specialized agents (Architect, Innovator, Security, Code Quality, Performance). Results are saved to brainstorm_outputs/ and synthesized by the main agent.threading.RLock — replaced threading.Lock with RLock in the REPL loop to support re-entrant calls from brainstorm synthesis and Ollama retry paths.05:39 PM, Apr 05, 2026 (v3.05.4): Reasoning, Rendering, and Packaging Improvements, Enhanced Memory System, Native vision support for local Ollama models, Bracketed Paste Mode, Rich Tab Completion
/ now shows every command with a one-line description and a hint of its subcommands. Typing /plugin then Tab lists all subcommands (install, uninstall, enable, …). Auto-completes to the unique match when only one command matches the prefix. Subcommands supported for /mcp, /plugin, /tasks, /cloudsave, /voice, /permissions, /proactive, and /memory.--model ollama/qwen3.5:35b no longer gets corrupted to ollama/qwen3.5/35b. The startup colon-to-slash conversion now only fires when the left side of : is a known provider name and no / is already present, preserving Ollama's model:tag format.llava, gemma4, llama3.2-vision): new /image [prompt] command captures the current clipboard image, encodes it to Base64, and attaches it to the next prompt. Install Pillow with pip install nano-claude-code[vision]; Linux users also need xclip (sudo apt install xclip).confidence / source / last_used_at / conflict_group metadata to every memory entry; conflict detection on MemorySave warns before overwriting; MemorySearch re-ranks results by confidence × recency (30-day decay) and updates last_used_at on hits; new /memory consolidate command runs a lightweight AI analysis of the current session and auto-saves up to 3 long-term insights (user preferences, feedback corrections, project decisions) at 0.8 confidence — never overwrites higher-confidence user memories.debug_payload.json file write that was firing on every OpenAI-compatible API call (left over from PR #11 development). Also fixed ANSI dim color not being reset after the thinking block ends, which caused subsequent text to appear dim in non-Rich terminals. Bumped pyproject.toml version to 3.05.4, and moved sounddevice to the optional voice extra (pip install nano-claude-code[voice]).deepseek-r1, qwen3, gemma4) now stream their <think> blocks to the terminal. Ollama exposes thoughts in msg["thinking"], but nano-claude was previously dropping them; this is now fixed by yielding ThinkingChunk from the Ollama adapter. Also fixed a Windows CMD/PowerShell rendering issue where token-by-token ANSI dim resets caused thoughts to print vertically, and corrected flush_response() so it runs once at the end instead of on every thinking token. Enable with /verbose and /thinking.pyproject.toml; install with uv tool install . to make the nano_claude command available globally from anywhere in an isolated environment, without manual PATH setup.00:41 PM, Apr 05, 2026: v3.05.3 add structured session history — Structured session history: on every exit, sessions are saved to daily/YYYY-MM-DD/ (capped at session_daily_limit, default 5 per day) and appended to a master history.json (capped at session_history_limit, default 100). Each session file now includes session_id and saved_at metadata. /load groups sessions by date with time, ID, and turn-count display; supports multi-select (1,2,3) to merge sessions and H to load the full history with token-count confirmation. Both limits are configurable via /config.
00:41 PM, Apr 05, 2026: v3.05.3 fix session — Structured session history: on every exit, sessions are saved to daily/YYYY-MM-DD/ (capped at session_daily_limit, default 5 per day) and appended to a master history.json (capped at session_history_limit, default 100). Each session file now includes session_id and saved_at metadata. /load groups sessions by date with time, ID, and turn-count display; supports multi-select (1,2,3) to merge sessions and H to load the full history with token-count confirmation. Both limits are configurable via /config.
09:34 AM, Apr 05, 2026: v3.05.3 — Added GitHub Gist cloud sync: /cloudsave setup <token> to configure, /cloudsave to upload the current session to a private Gist, /cloudsave auto on to sync automatically on /exit, /cloudsave list to browse cloud sessions, and /cloudsave load <id> to restore from the cloud. Uses stdlib urllib — no new dependencies. Also added version number (e.g., v3.05.2) in the startup banner: The startup banner now displays the current version number (v3.05.2) in green, making it easy to identify which version is running at a glance.
08:58 AM, Apr 05, 2026: v3.05.2 — Introduced /proactive [duration] command: a background daemon thread watches for user inactivity and automatically wakes the agent up after the specified interval (e.g. /proactive 5m), enabling continuous monitoring loops without user intervention. /proactive with no args now shows current status; /proactive off disables it explicitly. Proactive polling state is stored in config (no module-level globals). Watcher exceptions are logged via traceback instead of silently swallowed. Also fixed duplicated output in Rich-enabled terminals by buffering text during streaming and rendering Markdown once via rich.live.Live — updates happen in-place for a true streaming Markdown experience.
10:51 PM, Apr 04, 2026: v3.05_fix04 — Fixed a crash on /model and config save commands caused by the newly introduced _run_query_callback being serialized to JSON; also added SleepTimer usage
guidance to the system prompt so the agent knows when to invoke background timers proactively.
10:28 PM, Apr 04, 2026: v3.05_fix03 — Added a native SleepTimer tool that lets the agent schedule background timers and autonomously wake itself up after a delay — no user prompt required. Paired with a threading.Lock to prevent output collisions when background and foreground calls overlap. Also includes cross-platform fixes: Windows ANSI color support, CRLF-aware Edit tool matching, an interactive numbered menu for /load, native Ollama streaming via /api/chat, and auto-capping max_tokens per provider to prevent API errors.
08:31 PM, Apr 04, 2026: v3.05_fix — Autosave + /resume: session is automatically saved to mr_sessions/session_latest.json on /exit, /quit, Ctrl+C, and Ctrl+D. Run /resume to restore the last session instantly, or /resume <file> to load a specific file from mr_sessions/, and better support for api and local Ollama models (specifically gemma4), along with Windows c