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 instructions/u-ichi/compact-plus/agents-mdgit clone --depth 1 https://github.com/u-ichi/compact-plusWhat 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 | $0.01627 | $0.01627 |
| Opus 5 | $0.00813 | $0.00813 |
| Sonnet 5 | $0.00325 | $0.00325 |
| Haiku 4.5 | $0.00163 | $0.00163 |
Grade A, and why
compact-plus AGENTS.md 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.
How it starts
The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.
compact-plus Project Instructions
This repository manages the Claude Code and Codex plugin that preserves and restores working state around context compaction.
Scope
- This repository manages only the
compact-plusplugin itself. - Do not change the base repository
home/,install.sh, or Claude/Codex configuration distribution scripts.
Shared State
| path | writer | reader | purpose |
|---|---|---|---|
${TMPDIR:-/tmp}/claude-compact-state/<session_id>.md |
precompact-state-summary.sh / /compact-plus skill |
userpromptsubmit-compaction-recovery.sh / agent |
pre-compaction recovery state |
${TMPDIR:-/tmp}/claude-compact-state-offset/<session_id> |
precompact-state-summary.sh |
precompact-state-summary.sh |
incremental byte offset |
${TMPDIR:-/tmp}/claude-compact-state-counter/<session_id> |
precompact-state-summary.sh |
precompact-state-summary.sh |
refresh cycle counter |
${TMPDIR:-/tmp}/claude-compacted/<session_id> |
compaction-recovery.sh |
userpromptsubmit-compaction-recovery.sh |
PostCompact marker |
${TMPDIR:-/tmp}/claude-compact-warn/<session_id> |
statusline side | userpromptsubmit-compact-plus-reminder.sh |
compact-plus suggestion marker |
${TMPDIR:-/tmp}/claude-compact-warned/<session_id> |
userpromptsubmit-compact-plus-reminder.sh |
statusline side / compaction-recovery.sh |
suggestion cooldown marker |
${TMPDIR:-/tmp}/claude-active-plan/<session_id> |
plan-management hook | userpromptsubmit-compaction-recovery.sh |
active plan file pointer |
${TMPDIR:-/tmp}/codex-compact-state/<thread_id>.md |
precompact-state-summary.sh / /compact-plus skill |
sessionstart-compaction-recovery.sh / agent |
Codex pre-compaction recovery state |
${TMPDIR:-/tmp}/codex-compact-state-offset/<thread_id> |
precompact-state-summary.sh |
precompact-state-summary.sh |
Codex incremental byte offset |
${TMPDIR:-/tmp}/codex-compact-state-counter/<thread_id> |
precompact-state-summary.sh |
precompact-state-summary.sh |
Codex refresh cycle counter |
${TMPDIR:-/tmp}/codex-compacted/<thread_id> |
compaction-recovery.sh |
sessionstart-compaction-recovery.sh |
Codex PostCompact marker |
${TMPDIR:-/tmp}/codex-compact-warned/<thread_id> |
userpromptsubmit-compact-plus-reminder.sh |
reminder / recovery hook | Codex notification cooldown |
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.
- 2d ago First seen · 91 lines · 1,627 tokens per session scan A 1c7f43cdd53d
compact-plus AGENTS.md is an instructions file published in the GitHub repository u-ichi/compact-plus (201 stars, last pushed 1mo ago), licensed MIT. It adds 1,627 tokens to every session, about $0.0081 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.
Other instructions, from other repositories
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
next.js AGENTS.md
Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.