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Self-Customize (Agent Self-Extension)

Teaches an agent how to extend itself — install packages, add MCP servers, or delegate code changes — through a controlled, reviewable workflow.

AutomationAdvanced★ 30,471⑂ 12,865AI score 7/10Last updated: Aug 9, 2026

What it does

Gives a NanoClaw-style agent the decision rules and workflows for modifying its own environment.

  • Decision tree: routes each request based on what actually needs to change — memory/standing instructions, apt/npm packages, MCP servers, or source code.
  • Builder-agent delegation: source and Dockerfile edits are never done inline; the agent spawns a dedicated builder via create_agent, using the ready-made builder prompt included in the skill.
  • Hard diff limits: 200 new / 150 modified lines per builder task, forcing work into chunks a human can actually review.
  • When not to self-customize: one-off tasks, ambiguous requests, and unproven ideas should be prototyped in the workspace instead of mutating the container.

Who it's for

  • Developers running NanoClaw or a similar container-based agent runtime
  • Teams that want agents to grow their own tooling while keeping approval boundaries intact
  • Anyone studying multi-agent delegation patterns and safety guardrails

Examples

  1. Add an RSS tool: search mcp.so for an existing server; if found, call add_mcp_server and wait for admin approval plus container restart; if not, hand a builder agent a scoped task to implement read_rss in under 200 lines.
  2. Enable audio transcription: check which ffmpeg, then request install_packages({ apt: ["ffmpeg"], npm: ["@xenova/transformers"] }), let the image rebuild, and test after restart.
  3. Change standing behavior: edit instructions.prepend.md and memory/ directly (no approval needed) and never touch the auto-generated CLAUDE.md.

· · · Install guide · · ·

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the container/skills/self-customize folder from the GitHub repo nanocoai/nanoclaw into my ~/.claude/skills/self-customize/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/nanocoai/nanoclaw.git /tmp/nanoclaw && mkdir -p ~/.claude/skills && cp -r /tmp/nanoclaw/container/skills/self-customize ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo: git clone https://github.com/nanocoai/nanoclaw.git /tmp/nanoclaw
  3. Create the skills folder if needed: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r /tmp/nanoclaw/container/skills/self-customize ~/.claude/skills/
  5. Restart Claude Code and confirm self-customize appears in your skill list.
  6. Note: the workflow assumes NanoClaw-specific tools (install_packages, add_mcp_server, create_agent). Outside that runtime, treat it as a process reference rather than an executable workflow.
View source on GitHub ↗License: MIT