NanoClaw is an AI assistant that runs agents inside separate Linux containers, isolating their files and execution environments. People use it to connect agents to messaging services and run assistants with memory and scheduled jobs. The catalogue contains skills and instructions for extending or operating NanoClaw.
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.
npx skills add nanocoai/nanoclaw --skill add-deltachatgit clone --depth 1 https://github.com/nanocoai/nanoclawWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/nanocoai/nanoclaw/add-deltachat)<a href="https://agentmods.dev/skills/nanocoai/nanoclaw/add-deltachat"><img src="https://agentmods.dev/badge/skills/nanocoai/nanoclaw/add-deltachat/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/nanocoai/nanoclaw/add-deltachat"><img src="https://agentmods.dev/badge/skills/nanocoai/nanoclaw/add-deltachat.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Snyk fail
- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Tool Misuse · line 239 Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
- medium Rogue Agent · line 83 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 240 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00038 | $0.02690 |
| Opus 5 | $0.00019 | $0.01345 |
| Sonnet 5 | $0.00008 | $0.00538 |
| Haiku 4.5 | $0.00004 | $0.00269 |
Grade A, and why
add-deltachat scanned grade A with 0 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 13d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- add-deltachat — 86% identical, 57 lines differ
How it starts
The opening of the file, as written. The whole thing — 260 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add DeltaChat Channel
The adapter drives the @deltachat/stdio-rpc-server JSON-RPC subprocess directly — pure Node.js against the DeltaChat core library. Messages are delivered over email with Autocrypt/OpenPGP encryption.
Install
1. Copy the adapter and its registration test
Fetch the channels branch from the configured remote that carries it, then
overwrite the skill-owned files with the canonical registry copies:
src/channels/deltachat.ts
src/channels/deltachat-registration.test.ts
2. Append the self-registration import
Append to src/channels/index.ts (skip if already present):
import './deltachat.js';
3. Install the adapter package (pinned)
@deltachat/[email protected]
4. Build and validate
pnpm run build
pnpm exec vitest run src/channels/deltachat-registration.test.ts
Both must be clean before proceeding. deltachat-registration.test.ts is the one integration test: it imports the real channel barrel and asserts the registry contains deltachat. It goes red if the import './deltachat.js'; line is deleted or drifts, if the barrel fails to evaluate (so the channel genuinely would not register), or if @deltachat/stdio-rpc-server isn't installed (the import throws) — so it also implicitly verifies the dependency from step 4. Importing is safe: deltachat instantiates the rpc client only in setup() (at host startup), never at import.
End-to-end message delivery against a real email account is verified manually once the service is running — see Wiring and Troubleshooting.
Account Setup
A dedicated email account is strongly recommended — it will accumulate DeltaChat-formatted messages and store encryption keys. Not all providers work well with DeltaChat; check https://providers.delta.chat/ before picking one.
Default security modes: IMAP uses SSL/TLS (port 993), SMTP uses STARTTLS (port 587). Both are configurable via .env — see Credentials below.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 13d ago First seen · 260 lines · 38 tokens per session scan A 9ce825c7b58f
add-deltachat is a skill published in the GitHub repository nanocoai/nanoclaw (30,745 stars, last pushed today), licensed MIT. It adds 38 tokens to every session and 2,690 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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