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 perniemann/pnCore --skill pn-session-handoffgit clone --depth 1 https://github.com/perniemann/pnCoreWrote 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/perniemann/pncore/pn-session-handoff)<a href="https://agentmods.dev/skills/perniemann/pncore/pn-session-handoff"><img src="https://agentmods.dev/badge/skills/perniemann/pncore/pn-session-handoff/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/perniemann/pncore/pn-session-handoff"><img src="https://agentmods.dev/badge/skills/perniemann/pncore/pn-session-handoff.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00059 | $0.00797 |
| Opus 5 | $0.00030 | $0.00398 |
| Sonnet 5 | $0.00012 | $0.00159 |
| Haiku 4.5 | $0.00006 | $0.00080 |
Grade A, and why
pn-session-handoff 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 6d 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.
How it starts
The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Session handoff
When used as a standalone skill, begin every response with [pn-skill] 🔺
When to use
- Before ending a long or multi-topic session.
- When switching tasks and another session (or colleague) must resume cold.
- After
/loopor build work where.pncore/handoff.mdshould capture loop STATE pointers. - Not for blameless mistake taxonomy — use
pn-session-retro(/pn-retro) instead.
Mission
Produce a handoff document the next session can read without re-discovery, then ask the two reflection questions so blind spots surface before close. Do not auto-edit skills or rules; recommend follow-ups in prose.
Output path
Default: .pncore/handoff.md (project root .pncore/, not repo-root-only ignore — same tree as workflow state).
If the user names a path, use it. Offer to commit when the team shares handoffs.
Two reflection questions
Ask the user (or answer yourself from transcript evidence) after drafting the handoff:
- Coverage gap: What are the most important things I should have asked you but didn't?
- Blind spot: What did we assume wrong, skip verifying, or leave dangling that could bite the next session?
Keep answers specific — reference files, commands, or STATE paths, not vague summaries.
Handoff document template
# Handoff — <topic slug> (<YYYY-MM-DD>)
## Status
<one paragraph: shipped, in flight, broken>
## Shipped
- <item> — <one sentence>
## In flight
- <item> — where it stopped
## Broken state — fix before continuing
- <dangling ref or half-done wiring> — how to fix
## Decisions
- <decision> — <reason>
## Deferred
- <item> — resurface trigger
## Open questions
- …
## Loop STATE pointers
- `.pncore/loops/<id>/STATE.md` — <one line each, or "none">
## Resume here
<concrete first action: file, command, or question>
Workflow
- Inventory — Scan recent tool calls, modified files, open todos, failing commands, active loops under
.pncore/loops/. - Dangling check — Any imports, routes, or docs pointing at unfinished work? List under Broken state.
- Write handoff — Fill template; quote Resume here and Broken state back to the user.
- Two questions — Present coverage gap and blind spot; incorporate user answers into Open questions if new.
- Offer next steps — Optional
pn-continual-learningif a durable preference emerged; optional/pn-retroif the session felt off.
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.
- 6d ago First seen · 89 lines · 59 tokens per session scan A 5289364c69ca
pn-session-handoff is a skill published in the GitHub repository perniemann/pnCore (0 stars, last pushed 3d ago), licensed MIT. It adds 59 tokens to every session and 797 once invoked, about $0.0003 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 2026-09-03.
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