Borrowing it
Nothing to install: this file belongs to Furinelle/furina. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Furinelle/furina/main/.claude/skills/furina-compress/SKILL.mdgit clone --depth 1 https://github.com/Furinelle/furinaWrote 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/furinelle/furina/furina-compress)<a href="https://agentmods.dev/skills/furinelle/furina/furina-compress"><img src="https://agentmods.dev/badge/skills/furinelle/furina/furina-compress/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/furinelle/furina/furina-compress"><img src="https://agentmods.dev/badge/skills/furinelle/furina/furina-compress.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 | $0.00040 | $0.00284 |
| Opus 5 | $0.00020 | $0.00142 |
| Sonnet 5 | $0.00008 | $0.00057 |
| Haiku 4.5 | $0.00004 | $0.00028 |
Grade A, and why
furina-compress 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 12d 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
Furina Memory Compression
Prefer the shared runtime:
node skills/furina/scripts/furina-memory.mjs compress
If the repository runtime is unavailable, try node ~/.claude/furina-memory.mjs compress.
Manual Fallback
If no runtime is available, read ~/.claude/furina-memory.json and apply skills/furina/references/memory/compression.md as a proposal workflow: produce the compressed JSON and a short change summary for user confirmation. Do not overwrite the memory file manually unless the user explicitly approves that fallback write.
Compression priorities:
- Preserve high-priority memories.
- Treat
type=boundaryas high priority even if the storedpriorityis lower. - Merge duplicates and near-duplicates.
- Remove low-value one-off details.
- Keep wording concise and stable.
- Report before/after counts and the most important retained themes.
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.
- 12d ago First seen · 31 lines · 40 tokens per session scan A 7a00c90fc08a
furina-compress is a skill published in the GitHub repository Furinelle/furina (5 stars, last pushed 1mo ago), licensed MIT. It adds 40 tokens to every session and 284 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 2026-08-31.
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