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/everyinc/compound-engineering-plugin/ce-handoffnpx skills add EveryInc/compound-engineering-plugin --skill ce-handoffgit clone --depth 1 https://github.com/EveryInc/compound-engineering-pluginWhat 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 | $0.00041 | $0.01207 |
| Opus 5 | $0.00020 | $0.00603 |
| Sonnet 5 | $0.00008 | $0.00241 |
| Haiku 4.5 | $0.00004 | $0.00121 |
Grade A, and why
ce-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 3d 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 — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Handoff
Preserve enough session context for a fresh agent to orient quickly, then keep the user in control of what happens next.
Creation and resume are deliberately open at their edges. The managed store and ce-handoff/v1 metadata are defaults that make CE-created handoffs easy to find; they do not restrict where a handoff may be created or what a user may resume from. A resume source may come from any person, agent, or system and may use any readable format.
Route the invocation
- A bare invocation always creates a handoff.
create [focus]explicitly creates one. Usefocusas the intended objective for the next session.resume [source or keywords]reads an explicit continuity source or discovers likely candidates.- Natural-language creation and resume intent follows the same routes. This does not apply to ordinary requests to continue the current session unless the user expresses handoff intent.
Create
Read references/create.md before writing anything — a non-optional load. It owns the managed-store shell block and path rules, the ce-handoff/v1 frontmatter contract, the body contract, and the completion report.
Create one immutable handoff at the destination the user requested, or use the managed temporary store by default. The handoff supplements authoritative artifacts; it does not replace them. Write or publish it with existing capabilities. When the user named another path, folder, format, or publication destination, honor it using an appropriate available capability, including an installed publishing skill. Do not also create a persistent managed-store copy unless the user asks.
Point at plans, issues, commits, diffs, documentation, and files rather than reproducing them, and redact secrets, credentials, and unrelated personal information. Keep the handoff pointer-first: for each load-bearing reference, name what specifically matters there — not only the path. Prefer repository-relative paths for repository files; use absolute paths only for machine-local state and label them as machine-local.
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.
- 3d ago First seen · 55 lines · 41 tokens per session scan A adb7dceb1ab8
ce-handoff is a skill published in the GitHub repository EveryInc/compound-engineering-plugin (24,760 stars, last pushed today), licensed MIT. It adds 41 tokens to every session and 1,207 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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