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 agentmods add skills/bananasjim/openplan-skill/openplan-handoffnpx skills add BANANASJIM/openplan-skill --skill openplan-handoffgit clone --depth 1 https://github.com/BANANASJIM/openplan-skillWrote 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/bananasjim/openplan-skill/openplan-handoff)<a href="https://agentmods.dev/skills/bananasjim/openplan-skill/openplan-handoff"><img src="https://agentmods.dev/badge/skills/bananasjim/openplan-skill/openplan-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 | $0.00091 | $0.00476 |
| Opus 5 | $0.00046 | $0.00238 |
| Sonnet 5 | $0.00018 | $0.00095 |
| Haiku 4.5 | $0.00009 | $0.00048 |
Grade A, and why
openplan-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 5d 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
OpenPlan Handoff
Use this after $openplan-core and $openplan-operate when another agent or future session needs to resume without inheriting a long conversation.
Snapshot Rule
A handoff snapshot is not a memory bank and not a full transcript. It is the smallest durable artifact that lets the next agent decide what to read and what not to assume.
When To Create
- Before ending a long session.
- Before delegating to a subagent with non-trivial context.
- After an auto/YOLO review run.
- Before context compaction.
- When switching between Codex and Claude Code.
- When dual-surface state matters and the next agent must know which surface is authoritative.
Snapshot Contents
Use references/snapshot-template.md unless the user gives a project-native template.
Required sections:
- Objective
- Current mode
- Authority surfaces
- Human decisions
- Non-decisions
- Artifacts touched or reviewed
- Evidence
- Open questions and blockers
- Next safe action
- Residual risk
Rules
- Prefer path references over pasted content.
- Mark stale or unverified facts explicitly.
- Do not include secrets, credentials, or private tokens.
- Do not record guesses as decisions.
- Do not say approved; say reviewed scope and result.
- If dual repo or dual surface exists, record both surfaces separately.
- If no write occurred, say so.
Claude Code
Use assets/claude-code-command.md as a slash command or prompt seed.
Use $openplan-html-brief when the same snapshot needs a human-friendly visual frontend.
Use $openplan-record when a handoff lesson should be promoted into durable memory or documentation.
Use $openplan-garden when a handoff or document needs a semantic quality check before another agent relies on it.
What ships with it
3 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.
- 5d ago First seen · 59 lines · 91 tokens per session scan A 4762aefc9ead
openplan-handoff is a skill published in the GitHub repository BANANASJIM/openplan-skill (4 stars, last pushed 3mo ago), licensed MIT. It adds 91 tokens to every session and 476 once invoked, about $0.0005 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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