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 sssemil/SKILLS --skill handoffgit clone --depth 1 https://github.com/sssemil/SKILLSWrote 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/sssemil/skills/handoff)<a href="https://agentmods.dev/skills/sssemil/skills/handoff"><img src="https://agentmods.dev/badge/skills/sssemil/skills/handoff.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 | $0.00019 | $0.00273 |
| Opus 5 | $0.00010 | $0.00137 |
| Sonnet 5 | $0.00004 | $0.00055 |
| Haiku 4.5 | $0.00002 | $0.00027 |
Grade A, and why
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 7d 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
Handoff Skill
Use this skill when the user wants the current conversation compacted into a handoff document so a fresh agent can continue the work.
Instructions
Write a handoff document summarising the current conversation so a fresh agent can continue the work.
Save it to a path produced by:
mktemp -t handoff-XXXXXX.md
Read the file before you write to it.
Suggest the skills to be used, if any, by the next session.
Do not duplicate content already captured in other artifacts such as PRDs, plans, ADRs, issues, commits, or diffs. Reference those artifacts by path or URL instead.
If the user passed arguments, treat them as a description of what the next session will focus on and tailor the handoff document accordingly.
Handoff Document Checklist
Include only information that helps the next agent continue the work:
- Current goal and requested outcome
- Key decisions already made
- Relevant constraints, preferences, or assumptions
- Files, paths, URLs, commits, issues, or artifacts to inspect
- Work completed so far
- Open questions or blockers
- Recommended next steps
- Skills the next session should use, when applicable
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.
- 7d ago First seen · 40 lines · 19 tokens per session scan A ea3aaf471a32
handoff is a skill published in the GitHub repository sssemil/SKILLS (2 stars, last pushed 1mo ago), licensed MIT. It adds 19 tokens to every session and 273 once invoked, about $0.0001 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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