compact

A tool for checking identity and memory files against character limits and rewriting files that are too long into denser versions.

In plain words
What is it for?
Use it to check all identity files, compact a named file, preview proposed changes, or view current sizes and limits.
Why use it?
It prevents these files from growing past their limits while keeping their information. It also shows file sizes, changes, and compaction status.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/kcdjmaxx/homaruscc/compact
Any agent
npx skills add kcdjmaxx/HomarUScc --skill compact
Clone the repo
git clone --depth 1 https://github.com/kcdjmaxx/HomarUScc

Made for: Claude Code, Codex.

Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,217 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00071 $0.01217
Opus 5 $0.00036 $0.00609
Sonnet 5 $0.00014 $0.00243
Haiku 4.5 $0.00007 $0.00122

Measured 2d ago against content hash c7aafa16358c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 2d 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.

skills/compact/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Compact

Hard character limits on identity files with intelligent LLM-assisted consolidation. Prevents unbounded growth by rewriting at higher information density, not by deleting.

Usage

/compact                     -- check all files, compact any over limit
/compact preferences.md      -- compact a specific file
/compact --dry-run            -- show what would change without writing
/compact --status             -- show current sizes vs limits

How It Works

Step 1: Load Limits

Read ~/.homaruscc/config.json field identityLimits. Default limits (chars):

File Limit
soul.md 8,000
preferences.md 4,000
user.md 3,000
state.md 2,000
MEMORY.md 5,000 (+ 200 lines)
disagreements.md 1,500
bisociations.md 3,000

Identity files live at ~/.homaruscc/identity/. MEMORY.md lives at the project root.

Step 2: Measure Files

Read each file. Count characters. For --status, display a table:

File               Chars   Limit    Pct    Status
soul.md            7,200   8,000    90%    OK
preferences.md     4,800   4,000   120%    OVER - needs compaction
user.md            4,500   3,000   150%    OVER - flagged for human review
...

Mark 100-110% as WARNING, >110% as OVER. Stop here if --status.

Step 3: Identify Targets

  • Files >110% of limit: add to compaction queue
  • Files 100-110%: log warning, skip (buffer zone)
  • user.md: NEVER auto-compact. If over limit, say: "user.md is over limit ({pct}%). This file requires human review -- I won't compact it automatically."

Step 4: Compact Each File

For each file in the queue, read its content and build a consolidation prompt using the per-file rules below. The LLM output IS the compacted content.

If --dry-run: show the proposed compacted version and character savings. Do not write.

Otherwise: write the compacted content back to the file.

Step 5: Log

Read the full file on GitHub · 128 lines

Changes

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.

  1. 2d ago First seen · 128 lines · 71 tokens per session scan A c7aafa16358c

Subscribe to this mod's changes

compact is a skill published in the GitHub repository kcdjmaxx/HomarUScc (1 stars, last pushed 3mo ago), licensed MIT. It adds 71 tokens to every session and 1,217 once invoked, about $0.0004 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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