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 stark-ai-de/agent-skills --skill handoffgit clone --depth 1 https://github.com/stark-ai-de/agent-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/stark-ai-de/agent-skills/handoff)<a href="https://agentmods.dev/skills/stark-ai-de/agent-skills/handoff"><img src="https://agentmods.dev/badge/skills/stark-ai-de/agent-skills/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/stark-ai-de/agent-skills/handoff"><img src="https://agentmods.dev/badge/skills/stark-ai-de/agent-skills/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 | $0.00056 | $0.00679 |
| Opus 5.5 | $0.00022 | $0.00272 |
| Sonnet 5.5 | $0.00011 | $0.00136 |
| Haiku 4.5 | $0.00006 | $0.00068 |
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 1mo 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 — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Handoff
Goal
Create a compact continuation artifact that lets another agent resume the task without re-reading the entire thread or losing important decisions.
Trigger conditions
- The user asks for a handoff, checkpoint, resume note, or context summary.
- The current thread is long or close to compaction.
- Work must pause before validation, review, merge, or release.
When to use
- Use when another agent, thread, or future session must continue the same work.
- Use before compacting a long-running implementation or review thread.
When not to use
- Do not use for a final answer when the task is complete.
- Do not use to replace source files, issues, PR descriptions, or validation logs.
Inputs to inspect
- Latest user instruction, current objective, changed files, validation commands, failures, and blockers.
- Use
git status --shortandgit diff --statwhen working inside a repository.
Rules
- Reference files, diffs, PRs, issues, and reports by path or URL instead of duplicating content.
- Include only decisions, evidence, validation status, blockers, and next steps needed to continue.
- Separate confirmed facts from assumptions.
- Keep secrets out of the handoff.
Workflow
- Identify the objective and the latest user instruction.
- Summarize decisions and why they were made.
- List changed files or active work areas.
- Record commands run and their outcomes.
- Name blockers, risks, and missing approvals.
- End with the next concrete action.
Commands
Useful commands before writing:
git status --short
git diff --stat
git log --oneline -5
Safety rules
- Do not include tokens, credentials, or sensitive snippets.
- Do not imply validation passed unless it was run and succeeded.
- Do not bury approvals required for destructive or remote actions.
Assets
Use assets/handoff-template.md when the user wants a file-based handoff.
References
Read only when needed:
assets/handoff-template.md
Scripts
What ships with it
1 file 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.
- 1mo ago First seen · 111 lines · 56 tokens per session scan A 5b20d981b90b
handoff is a skill published in the GitHub repository stark-ai-de/agent-skills (8 stars, last pushed 3d ago), licensed Apache-2.0. It adds 56 tokens to every session and 679 once invoked, about $0.0002 per session on Opus 5.5. 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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