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 backnotprop/pstack --skill principle-never-block-on-the-humangit clone --depth 1 https://github.com/backnotprop/pstackWrote 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/backnotprop/pstack/principle-never-block-on-the-human)<a href="https://agentmods.dev/skills/backnotprop/pstack/principle-never-block-on-the-human"><img src="https://agentmods.dev/badge/skills/backnotprop/pstack/principle-never-block-on-the-human.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00046 | $0.00348 |
| Opus 5 | $0.00023 | $0.00174 |
| Sonnet 5 | $0.00009 | $0.00070 |
| Haiku 4.5 | $0.00005 | $0.00035 |
Grade A, and why
principle-never-block-on-the-human 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 8d 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.
This is a copy
100% identical to principle-never-block-on-the-human — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Never Block on the Human
The human supervises asynchronously. Agents must stay unblocked: make reasonable decisions, proceed, and let the human course-correct after the fact. Code is cheap. Waiting is expensive.
Why: Every permission pause stalls the pipeline and makes the human the bottleneck. Since code changes are reversible and reviewable, a wrong decision usually costs less than blocking.
Pattern:
- Proceed, then present. Do the work, show the result. Don't ask "should I do X?" Do X, explain why.
- Reserve questions for genuine ambiguity. Ask only when you truly cannot infer intent from context.
- Make the system self-healing. When you notice a problem, log it and fix it in the next round.
- Supervision is async. The human reviews plans, diffs, and changes on their own schedule. Design workflows for review-after-the-fact.
- Code is cheap, attention is scarce. A wrong implementation costs minutes to fix. A blocked agent costs the human's attention to unblock.
Boundaries:
- Irreversible actions (force-push, delete production data, send external messages) still require confirmation.
- Reversible actions (write code, edit notes, split tasks) should proceed without blocking.
- Product direction comes from the human; execution should not block.
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.
- 8d ago First seen · 24 lines · 46 tokens per session scan A f656f3b7581d
principle-never-block-on-the-human is a skill published in the GitHub repository backnotprop/pstack (201 stars, last pushed 19d ago), licensed MIT. It adds 46 tokens to every session and 348 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to principle-never-block-on-the-human, differing in 0 lines, and is treated as a copy.
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