debug

A troubleshooting guide for NanoClaw's container agents, which run tasks in separate isolated environments.

In plain words
What is it for?
Use it to inspect logs, session databases, mounted files, and common container problems.
Why use it?
It helps identify why an agent, container, login, or communication path is not working.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/nanocoai/nanoclaw/debug
Any agent
npx skills add nanocoai/nanoclaw --skill debug
Clone the repo
git clone --depth 1 https://github.com/nanocoai/nanoclaw

Made for: Claude Code, Codex.

Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,485 The whole file, excluding the scripts and references it only reads on demand.
Security scan D 3 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00041 $0.03485
Opus 5 $0.00020 $0.01742
Sonnet 5 $0.00008 $0.00697
Haiku 4.5 $0.00004 $0.00348

Measured 3d ago against content hash 4be0e0d989b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade D, and why

debug scanned grade D with 3 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

docker info &>/dev/null && echo "OK" || echo "NOT RUNNING - start Docker Desktop (macOS) or sudo systemctl start docker (Linux)"

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm -rf data/v2-sessions/<group>/<session>/

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsS http://127.0.0.1:10254/ >/dev/null 2>&1 && echo "OK" || echo "CHECK - gateway not responding on 127.0.0.1:10254"
.claude/skills/debug/SKILL.md · 298 lines

How it starts

The opening of the file, as written. The whole thing — 298 lines — stays where its author put it; the contents beside it link to each section on GitHub.

NanoClaw Container Debugging

This guide covers debugging the containerized agent execution system.

Architecture Overview

The host is a single Node process that orchestrates per-session agent containers. The two session DBs are the sole IO surface between host and container — there is no IPC, no file watcher, and no stdin piping.

Host (Node)                                Container (Bun, Linux VM)
──────────────────────────────────────────────────────────────────────
src/container-runner.ts                    container/agent-runner/src/
    │                                          │
    │ spawns one container per session          │ polls inbound.db for work,
    │ with the session folder mounted          │ calls the agent provider,
    │ at /workspace                            │ writes replies to outbound.db
    │                                          │
    ├── data/v2-sessions/<group>/<session>/ ──> /workspace
    │     ├── inbound.db   (host writes, container reads RO)
    │     ├── outbound.db  (container writes, host reads)
    │     └── .heartbeat   (container touches → /workspace/.heartbeat)
    ├── groups/<folder> ─────────────────────> /workspace/agent  (cwd)
    ├── <group>/.claude-shared ──────────────> /home/node/.claude
    └── agent-runner src + skills ───────────> /app/src, /app/skills

Message flow: host writes a row to inbound.db (messages_in) and wakes the container; the container's poll loop picks it up, runs the agent, and writes the reply to outbound.db (messages_out); the host's delivery poll reads messages_out and sends it through the channel adapter. See docs/db.md and docs/db-session.md for the full two-DB model.

Container identity: the container runs as user node with HOME=/home/node. Per-group Claude state (settings, session history) lives in <group>/.claude-shared on the host, mounted to /home/node/.claude.

Log Locations

Log Location Content
Host errors logs/nanoclaw.error.log Delivery failures, crash-loop backoff, warnings — check this first
Host app log logs/nanoclaw.log Full routing chain: inbound routing, container spawn/exit, delivery
Setup logs logs/setup.log, logs/setup-steps/*.log Per-step install output (bootstrap, container, onecli, mounts, service)
Session inbound data/v2-sessions/<group>/<session>/inbound.db (messages_in) Did the message reach the container?
Session outbound data/v2-sessions/<group>/<session>/outbound.db (messages_out) Did the agent produce a reply?

Read the full file on GitHub · 298 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 298 lines · 41 tokens per session scan D 4be0e0d989b3

Subscribe to this mod's changes

debug is a skill published in the GitHub repository nanocoai/nanoclaw (30,678 stars, last pushed today), licensed MIT. It adds 41 tokens to every session and 3,485 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it D with 3 findings (asks for root, recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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