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 OKHP3/skillz --skill okhp3-session-handoffgit clone --depth 1 https://github.com/OKHP3/skillzWrote 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/okhp3/skillz/okhp3-session-handoff)<a href="https://agentmods.dev/skills/okhp3/skillz/okhp3-session-handoff"><img src="https://agentmods.dev/badge/skills/okhp3/skillz/okhp3-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/okhp3/skillz/okhp3-session-handoff"><img src="https://agentmods.dev/badge/skills/okhp3/skillz/okhp3-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 | $0.00067 | $0.00584 |
| Opus 5 | $0.00034 | $0.00292 |
| Sonnet 5 | $0.00013 | $0.00117 |
| Haiku 4.5 | $0.00007 | $0.00058 |
Grade A, and why
okhp3-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 9d 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.
What it actually says
okhp3-session-handoff
OverKill Hill P³ · overkillhill.com · github.com/OKHP3
Inputs and output
Require a project root, handoff destination, objective, and current work
inventory. Return the handoff path, source boundary, status, next action,
evidence ledger, checks, limitations, and owner decisions. If the destination
is not identified, return BLOCKED rather than guessing.
Run okhp3-artifact-validation first when practical. Write a dated Markdown
record under the user-approved handoff destination, using a collision-safe
filename, containing:
- source host and date;
- objective and current status;
- changed files or artifact inventory;
- why non-obvious decisions were made;
- confirmed, inferred, proposed, and unknown conclusions where relevant;
- checks run, real results, and checks not run;
- known defects, limitations, and owner decisions needed;
- exact next action and the files needed to resume.
Keep paths relative. Do not claim that another copy has received or applied the handoff unless that destination was directly inspected.
When new evidence changes an existing handoff, add a dated addendum if the same handoff remains the natural continuity record. Preserve the earlier conclusion and explain why it changed. Do not rewrite history to make the record look consistently correct.
About
Built by Jamie Hill · OverKill Hill P³ Published at github.com/OKHP3 Part of the OKHP3/skillz Agent Skill library. MIT License -- free to use, fork, and adapt. A nod to the source is appreciated.
What ships with it
2 files 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.
- 9d ago First seen · 54 lines · 67 tokens per session scan A fc3b481b6bae
okhp3-session-handoff is a skill published in the GitHub repository OKHP3/skillz (3 stars, last pushed today), licensed MIT. It adds 67 tokens to every session and 584 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 2026-08-31.
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