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 jxoesneon/Ciel --skill strategic-compactgit clone --depth 1 https://github.com/jxoesneon/CielWrote 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/jxoesneon/ciel/strategic-compact)<a href="https://agentmods.dev/skills/jxoesneon/ciel/strategic-compact"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/strategic-compact/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/jxoesneon/ciel/strategic-compact"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/strategic-compact.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 | $0.00021 | $0.00570 |
| Opus 5 | $0.00010 | $0.00285 |
| Sonnet 5 | $0.00004 | $0.00114 |
| Haiku 4.5 | $0.00002 | $0.00057 |
Grade A, and why
strategic-compact 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 9d 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
CIEL ADAPTATION: Strategic Compact (Phase-Based Memory)
This skill formalizes the practice of "Strategic Compaction"—manual invocation of the /compact command at logical boundaries rather than relying on arbitrary, token-triggered auto-compaction.
The Compaction Decision Guide
| Boundary | Compact? | Rationale |
|---|---|---|
| Research → Planning | YES | Research traces are bulky; the Plan is the distilled output. |
| Planning → Implementation | YES | The plan is in TodoWrite; clear the reasoning space for code. |
| Implementation → Testing | MAYBE | Keep if tests require deep code context; compact if focus shifts. |
| Debug → Next Task | YES | Error traces and logs heavily pollute unrelated work. |
| Mid-Implementation | NO | Losing variable names and partial state is catastrophic. |
Operational Protocol
- Pre-Compact Audit: Before compacting, ensure all vital state (Plans, Findings, Decisions) is written to durable storage (
MEMPALACE,TodoWrite, or project files). - Summary Command: Use
/compact [summary]to preserve a high-level intent marker across the compaction boundary. - Trigger Threshold: Suggest compaction to the user every 50 tool calls if a major phase transition has occurred.
Benefits
- Response Coherence: Prevents the model from becoming "confused" by stale reasoning from a prior task.
- Efficiency: Maximizes available context for active implementation.
- Determinism: Ensures that the most important context (The Plan) is always in the most recent (high-priority) part of the window.
Anti-Patterns
- Blind Compaction: Compacting in the middle of a complex multi-file edit.
- The Amnesia Trap: Compacting before writing down the current implementation hypothesis.
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.
- 9d ago First seen · 53 lines · 21 tokens per session scan A a2113d5db4e6
strategic-compact is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 5d ago), licensed Apache-2.0. It adds 21 tokens to every session and 570 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 2026-09-03.
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