What is compact-plus AGENTS.md?

A set of project instructions for compact-plus, a plugin that preserves and restores an agent’s working state when its conversation is shortened. It defines which files and scripts write and read that recovery state.

Use it when developing or maintaining compact-plus, including its recovery scripts, shared temporary state, external dependencies, and hook behavior.

It gives the plugin and its scripts shared rules for recovering context after compaction. It also limits changes to the compact-plus project instead of the base repository or configuration distribution files.

How u-ichi/compact-plus configures Claude Code and Codex

Reuse

Borrowing it

Nothing to install: this file belongs to u-ichi/compact-plus. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/u-ichi/compact-plus/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/u-ichi/compact-plus

Made for: Claude Code, Codex, OpenCode.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/u-ichi/compact-plus/agents-md/github.svg)](https://agentmods.dev/instructions/u-ichi/compact-plus/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/u-ichi/compact-plus/agents-md"><img src="https://agentmods.dev/badge/instructions/u-ichi/compact-plus/agents-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/u-ichi/compact-plus/agents-md"><img src="https://agentmods.dev/badge/instructions/u-ichi/compact-plus/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,627 This file is loaded in full into every session.

When invoked 1,627 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01627	$0.01627
Opus 5.5	$0.00651	$0.00651
Sonnet 5.5	$0.00325	$0.00325
Haiku 4.5	$0.00163	$0.00163

Measured 2mo ago against content hash 1c7f43cdd53d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 2mo 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.

AGENTS.md · 91 lines

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-plus plugin 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

Read the full file on GitHub · 91 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.

2mo ago First seen · 91 lines · 1,627 tokens per session scan A 1c7f43cdd53d

Subscribe to this mod's changes

compact-plus AGENTS.md is an instructions file published in the GitHub repository u-ichi/compact-plus (207 stars, last pushed 3mo ago), licensed MIT. It adds 1,627 tokens to every session, about $0.0065 per session on Opus 5.5. 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.

Memory and context

compact-plus AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
compact-plus AGENTS.mdu-ichi/compact-plus	Instructions file	207	3mo ago	MIT	A	1,627	Claude Code, Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

compact-plus: Instructions file for Claude Code