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 willseltzer/claude-handoff --skill handoffgit clone --depth 1 https://github.com/willseltzer/claude-handoffWrote 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/willseltzer/claude-handoff/handoff)<a href="https://agentmods.dev/skills/willseltzer/claude-handoff/handoff"><img src="https://agentmods.dev/badge/skills/willseltzer/claude-handoff/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 | $0.00034 | $0.00338 |
| Opus 5 | $0.00017 | $0.00169 |
| Sonnet 5 | $0.00007 | $0.00068 |
| Haiku 4.5 | $0.00003 | $0.00034 |
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 Detection
On Session Start
Check if HANDOFF.md exists in the working directory. If found:
- Read it silently
- Tell the user: "Found a handoff from a previous session: [title]. [1-sentence goal]. Resume from here?"
- If they agree, follow
/handoff:resumeflow
Trigger Words
Activate when user says: "handoff", "hand off", "pass this to", "continue later", "pick up where", "transfer context", "save state", "resume", "take over"
Creating vs Resuming
- User wants to create: They're wrapping up or switching agents → use
/handoff:create - User wants to resume: They're starting fresh with existing handoff → use
/handoff:resume
Proactive Suggestions
Consider suggesting a handoff when:
- User says "I need to go" or "let's stop here"
- A significant milestone is reached
- You've been working for a long time with lots of context
Say: "Want me to create a handoff so you (or another agent) can continue later?"
Commands
| Command | Use When |
|---|---|
/handoff:create |
Full handoff with all context |
/handoff:quick |
Minimal handoff, just essentials |
/handoff:resume |
Continue from existing handoff |
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 · 41 lines · 34 tokens per session scan A 7fabd74b7366
handoff is a skill published in the GitHub repository willseltzer/claude-handoff (143 stars, last pushed 8mo ago), licensed MIT. It adds 34 tokens to every session and 338 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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