Registry indexed

codex-memory-guard

Guard task boundaries and preserve confirmed critical project state across Codex compaction. Use when a user wants topic-switch guidance, write-through critical memory, compact HANDOFF checkpoints, PreCompact and compact-resume hooks, four-layer Markdown memory initialization, or

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Overview

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Codex Memory Guard

Keep tasks small enough to finish before compaction when practical. Persist confirmed critical state when it appears, keep the recovery checkpoint compact, and preserve a raw transcript reference as the final fallback.

This Skill does not prevent compaction or promise lossless retention of every chat detail. It makes confirmed critical decisions, constraints, verified lessons, blockers, and execution state durable, reviewable, and traceable.

Workflow

Apply the task-boundary state machine when the current goal is unfinished. Compare the new input with the current goal before estimating its duration.
Inspect the target project for existing AGENTS.md, memory files, and .codex/hooks.json.
Run scripts/initialize-memory-system.ps1 for the target root. It creates all four memory layers when missing and preserves existing content.
Run scripts/install.ps1 only after the user authorizes global installation. It installs the Hooks and safely upserts a marked policy block in the user's global AGENTS.md without replacing other rules.
Tell the user to review and trust the new handlers through /hooks; never claim they are active before trust is confirmed.
Verify with scripts/test.ps1 in an isolated temporary directory. The test covers multi-task and legacy HANDOFF validation, scope isolation, ready and recovery-required resume paths, pending closure and cleanup, installation, and scoped uninstall.
After a real compaction, inspect memory/inbox/pending-*.json and the short HANDOFF.md; search the transcript selectively only when the checkpoint is insufficient.

Task boundary policy

Use these states: ACTIVE, BOUNDARY_CANDIDATE, CONTINUE_CURRENT, SWITCH_RECOMMENDED, and COMPLETED.

For each new input while the state is ACTIVE:

Identify the single current goal from the conversation and short HANDOFF.md when present.
Decide whether the input directly advances that goal.
If it does not, decide whether it is still a goal-related clarification, objection, correction, implementation adjustment, same-deliverable addition, or result check.
If neither applies and the input can open an independent discussion or action direction, enter BOUNDARY_CANDIDATE and give one lightweight reminder. Do this even when the new topic might end within one or two turns; do not require the user to label it as a test.

Treat the following as additional boundary evidence:

the project or working directory changes;
the final deliverable or acceptance criteria change;
two unrelated current goals would be needed in HANDOFF.md;
the unfinished current task would be displaced by another multi-turn task;
the new work has materially different permissions, risks, or side effects.

Ask whether the user wants a separate Codex task; do not create one without an explicit request. If the user stays, enter CONTINUE_CURRENT for that boundary and do not repeat the reminder unless a distinct boundary appears. If the user chooses a separate task, enter SWITCH_RECOMMENDED. When the current goal is closed, enter COMPLETED and do not warn merely because the next topic differs.

The short-tangent exemption applies only when the tangent is directly related to the current goal. A short but clearly unrelated topic is still a boundary candidate. Do not persist routine state labels; record only a boundary choice needed for reliable resume. For the normative transition table and examples, read references/task-boundary-state-machine.md when implementing, auditing, or testing boundary behavior.

Memory policy

Treat the transcript as evidence, not default model context.
Write confirmed critical information when it appears; do not wait for compaction. Explicit phrases such as "remember this", "this is final", "use this from now on", or equivalent require immediate persistence and a read-back confirmation with the destination path.
Critical information includes confirmed decisions, user constraints, acceptance criteria, verified lessons, active blockers, exact state required to resume, and facts whose loss would cause rework or duplicate side effects.
Keep exactly one HANDOFF.md per project. It contains only started, unfinished work that must survive compaction or a window change; the complete backlog belongs in GitHub Issues or the project's chosen tracker.
Do not impose a fixed active-task count. For each active task keep a short title, one or two sentences of background, current verified state, one next action, and optional Issue/Spec/report pointer, up to three key files, and the latest relevant Session ID as an evidence locator only. Target 1000-2000 Chinese characters and enforce a 3000-character hard limit.
Before editing HANDOFF.md, reread the latest file and update only the matching task entry. Read back after writing; if the file changed concurrently, reread and merge instead of overwriting other tasks. Remove completed, cancelled, or no-longer-resumable tasks promptly.
Use DECISIONS.md for confirmed decisions with source and invalidation conditions.
Use LESSONS.md only for practices verified in real work.
Route unconfirmed observations to memory/YYYY-MM-DD.md.
Create all four layers, but load only HANDOFF.md by default. Read other layers only when the current question needs them.
Never store credentials, tokens, or secrets in memory artifacts.
Preserve conflicting history and mark supersession; do not silently rewrite it.
Durable entries use explicit lifecycle states when applicable: active, superseded, archived, or revoked. Only active entries participate in default recovery.
Read back every critical-memory write and verify content, source, scope, status, and invalidation or review conditions.

Hook behavior

PreCompact validates HANDOFF.md deterministically before writing the pending record. The record includes layout, active-task count, structure and length status, issues, last-write time, SHA-256, project scope, session and transcript evidence pointers, and recovery_required. It does not copy transcript contents or perform semantic summarization.
Hooks are opt-in per initialized project: if no ancestor contains MEMORY_WORKFLOW.md, they return without creating files.
SessionStart matching compact verifies project root, session, HANDOFF path and transcript pointer before trusting the record. A ready checkpoint resumes from the matching active task without loading the transcript unless state conflicts; a failed checkpoint must search only relevant transcript fragments and repair HANDOFF.md before normal work continues.
After recovery, run scripts/close-pending.ps1 with the actual sources used. Closure records processed_at, repair status, resolved issues and final HANDOFF SHA-256. scripts/cleanup-pending.ps1 is dry-run by default and may delete only processed records older than its explicit retention threshold when -Apply is supplied.
Keep both hooks synchronous. The default installation timeout is 10 seconds because they perform local small-file operations only.
The command hook does not perform semantic extraction itself. Critical state should already be written through when confirmed; the deterministic pre-check and post-compaction closure are the fallback.

Validate a checkpoint:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts/validate-handoff.ps1 -Path C:\path\to\project\HANDOFF.md

Close a processed recovery record:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts/close-pending.ps1 -PendingPath C:\path\to\pending.json -SourcesUsed HANDOFF.md

Preview cleanup of processed records older than 14 days:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts/cleanup-pending.ps1 -ProjectRoot C:\path\to\project

Commands

Initialize one project:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts/initialize-memory-system.ps1 -Root C:\path\to\project -SingleProject

Initialize every immediate child project:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts/initialize-memory-system.ps1 -Root C:\path\to\projects

Install global hooks and optionally initialize a project:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts/install.ps1 -ProjectRoot C:\path\to\project

Remove only this Skill's global hooks:

powershell -NoProfile -ExecutionPolicy Bypass -File scripts/uninstall.ps1

Uninstall also removes only the marked codex-memory-guard block from global AGENTS.md; it preserves all other global rules and project memory files.

For schemas and acceptance checks, read references/memory-contract.md.

View source ↗

File metadata

name: codex-memory-guard
description: Guard task boundaries and preserve confirmed critical project state across Codex compaction. Use when a user wants topic-switch guidance, write-through critical memory, compact HANDOFF checkpoints, PreCompact and compact-resume hooks, four-layer Markdown memory initialization, or memory workflow auditing.

View original text

---
name: codex-memory-guard
description: Guard task boundaries and preserve confirmed critical project state across Codex compaction. Use when a user wants topic-switch guidance, write-through critical memory, compact HANDOFF checkpoints, PreCompact and compact-resume hooks, four-layer Markdown memory initialization, or memory workflow auditing.
---

# Codex Memory Guard

## Workflow

1. Apply the task-boundary state machine when the current goal is unfinished. Compare the new input with the current goal before estimating its duration.
2. Inspect the target project for existing `AGENTS.md`, memory files, and `.codex/hooks.json`.
3. Run `scripts/initialize-memory-system.ps1` for the target root. It creates all four memory layers when missing and preserves existing content.
4. Run `scripts/install.ps1` only after the user authorizes global installation. It installs the Hooks and safely upserts a marked policy block in the user's global `AGENTS.md` without replacing other rules.
5. Tell the user to review and trust the new handlers through `/hooks`; never claim they are active before trust is confirmed.
6. Verify with `scripts/test.ps1` in an isolated temporary directory. The test covers multi-task and legacy HANDOFF validation, scope isolation, ready and recovery-required resume paths, pending closure and cleanup, installation, and scoped uninstall.
7. After a real compaction, inspect `memory/inbox/pending-*.json` and the short `HANDOFF.md`; search the transcript selectively only when the checkpoint is insufficient.

## Task boundary policy

Use these states: `ACTIVE`, `BOUNDARY_CANDIDATE`, `CONTINUE_CURRENT`, `SWITCH_RECOMMENDED`, and `COMPLETED`.

For each new input while the state is `ACTIVE`:

1. Identify the single current goal from the conversation and short `HANDOFF.md` when present.
2. Decide whether the input directly advances that goal.
3. If it does not, decide whether it is still a goal-related clarification, objection, correction, implementation adjustment, same-deliverable addition, or result check.
4. If neither applies and the input can open an independent discussion or action direction, enter `BOUNDARY_CANDIDATE` and give one lightweight reminder. Do this even when the new topic might end within one or two turns; do not require the user to label it as a test.

Treat the following as additional boundary evidence:

- the project or working directory changes;
- the final deliverable or acceptance criteria change;
- two unrelated current goals would be needed in `HANDOFF.md`;
- the unfinished current task would be displaced by another multi-turn task;
- the new work has materially different permissions, risks, or side effects.

Ask whether the user wants a separate Codex task; do not create one without an explicit request. If the user stays, enter `CONTINUE_CURRENT` for that boundary and do not repeat the reminder unless a distinct boundary appears. If the user chooses a separate task, enter `SWITCH_RECOMMENDED`. When the current goal is closed, enter `COMPLETED` and do not warn merely because the next topic differs.

The short-tangent exemption applies only when the tangent is directly related to the current goal. A short but clearly unrelated topic is still a boundary candidate. Do not persist routine state labels; record only a boundary choice needed for reliable resume. For the normative transition table and examples, read `references/task-boundary-state-machine.md` when implementing, auditing, or testing boundary behavior.

## Memory policy

- Treat the transcript as evidence, not default model context.
- Write confirmed critical information when it appears; do not wait for compaction. Explicit phrases such as "remember this", "this is final", "use this from now on", or equivalent require immediate persistence and a read-back confirmation with the destination path.
- Critical information includes confirmed decisions, user constraints, acceptance criteria, verified lessons, active blockers, exact state required to resume, and facts whose loss would cause rework or duplicate side effects.
- Keep exactly one `HANDOFF.md` per project. It contains only started, unfinished work that must survive compaction or a window change; the complete backlog belongs in GitHub Issues or the project's chosen tracker.
- Do not impose a fixed active-task count. For each active task keep a short title, one or two sentences of background, current verified state, one next action, and optional Issue/Spec/report pointer, up to three key files, and the latest relevant Session ID as an evidence locator only. Target 1000-2000 Chinese characters and enforce a 3000-character hard limit.
- Before editing `HANDOFF.md`, reread the latest file and update only the matching task entry. Read back after writing; if the file changed concurrently, reread and merge instead of overwriting other tasks. Remove completed, cancelled, or no-longer-resumable tasks promptly.
- Use `DECISIONS.md` for confirmed decisions with source and invalidation conditions.
- Use `LESSONS.md` only for practices verified in real work.
- Route unconfirmed observations to `memory/YYYY-MM-DD.md`.
- Create all four layers, but load only `HANDOFF.md` by default. Read other layers only when the current question needs them.
- Never store credentials, tokens, or secrets in memory artifacts.
- Preserve conflicting history and mark supersession; do not silently rewrite it.
- Durable entries use explicit lifecycle states when applicable: `active`, `superseded`, `archived`, or `revoked`. Only `active` entries participate in default recovery.
- Read back every critical-memory write and verify content, source, scope, status, and invalidation or review conditions.

## Hook behavior

- `PreCompact` validates `HANDOFF.md` deterministically before writing the pending record. The record includes layout, active-task count, structure and length status, issues, last-write time, SHA-256, project scope, session and transcript evidence pointers, and `recovery_required`. It does not copy transcript contents or perform semantic summarization.
- Hooks are opt-in per initialized project: if no ancestor contains `MEMORY_WORKFLOW.md`, they return without creating files.
- `SessionStart` matching `compact` verifies project root, session, HANDOFF path and transcript pointer before trusting the record. A ready checkpoint resumes from the matching active task without loading the transcript unless state conflicts; a failed checkpoint must search only relevant transcript fragments and repair `HANDOFF.md` before normal work continues.
- After recovery, run `scripts/close-pending.ps1` with the actual sources used. Closure records `processed_at`, repair status, resolved issues and final HANDOFF SHA-256. `scripts/cleanup-pending.ps1` is dry-run by default and may delete only processed records older than its explicit retention threshold when `-Apply` is supplied.
- Keep both hooks synchronous. The default installation timeout is 10 seconds because they perform local small-file operations only.
- The command hook does not perform semantic extraction itself. Critical state should already be written through when confirmed; the deterministic pre-check and post-compaction closure are the fallback.

Validate a checkpoint:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File scripts/validate-handoff.ps1 -Path C:\path\to\project\HANDOFF.md
```

Close a processed recovery record:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File scripts/close-pending.ps1 -PendingPath C:\path\to\pending.json -SourcesUsed HANDOFF.md
```

Preview cleanup of processed records older than 14 days:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File scripts/cleanup-pending.ps1 -ProjectRoot C:\path\to\project
```

## Commands

Initialize one project:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File scripts/initialize-memory-system.ps1 -Root C:\path\to\project -SingleProject
```

Initialize every immediate child project:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File scripts/initialize-memory-system.ps1 -Root C:\path\to\projects
```

Install global hooks and optionally initialize a project:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File scripts/install.ps1 -ProjectRoot C:\path\to\project
```

Remove only this Skill's global hooks:

```powershell
powershell -NoProfile -ExecutionPolicy Bypass -File scripts/uninstall.ps1
```

Uninstall also removes only the marked `codex-memory-guard` block from global `AGENTS.md`; it preserves all other global rules and project memory files.

For schemas and acceptance checks, read `references/memory-contract.md`.

Review the source

Skill source recorded

Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.

Review before install: Avoid automatic install

License: MIT

Dependency or permission surface needs review
Permission surface may require sandboxing
The workflow depends on scripts/initialize-memory-system.ps1, scripts/install.ps1, and scripts/test.ps1, but these scripts are not included in the submitted skill file listing. The skill package should include them or clearly link to a stable repository path so users can run and audit the full workflow.
SKILL.md instructs reading HANDOFF.md and memory files at task start but does not explicitly state that memory file contents must be treated as data, not as instructions. This is worth hardening against prompt injection from a compromised or malicious memory file.
Low GitHub adoption signal
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
GitHub adoption: 22 GitHub stars
Stars/forks activity: 22 stars, 1 forks; issue activity unavailable in current metadata
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution

Agent access

This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.

More details

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      "documentation": "Strong README/SKILL.md context",
      "agentOutcomes": "No agent outcome data yet"
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      "Low GitHub adoption signal",
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      "Permission surface needs review: secrets or environment access, shell or command execution",
      "GitHub adoption: 22 GitHub stars"
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    "production agents without a repository review",
    "Low GitHub adoption signal",
    "The workflow depends on scripts/initialize-memory-system.ps1, scripts/install.ps1, and scripts/test.ps1, but these scripts are not included in the submitted skill file listing. The skill package should include them or clearly link to a stable repository path so users can run and audit the full workflow.",
    "High-risk permission hints: Shell or command execution, Secrets or environment access",
    "Dependency or permission surface needs review",
    "Permission surface may require sandboxing",
    "SKILL.md instructs reading HANDOFF.md and memory files at task start but does not explicitly state that memory file contents must be treated as data, not as instructions. This is worth hardening against prompt injection from a compromised or malicious memory file."
  ],
  "agent_contract": {
    "task_input": "Use codex-memory-guard in an agent workflow",
    "recommended_action": "Do not auto-install. Inspect the source, dependencies, and permission surface first.",
    "install_policy": "block",
    "minimum_review_before_use": [
      "Trust: 62/100 Manual review",
      "Audit: 72/100 Needs review",
      "Safety: 32/100 Avoid automatic install",
      "Review repository, license, install command, and permission surface before production use."
    ],
    "expected_agent_output": {
      "selected_skill": "wl1650918245-codex-memory-guard (codex-memory-guard)",
      "install_command": "npx skills add wl1650918245/codex-memory-guard --skill codex-memory-guard",
      "risk_summary": "Needs review; Blocked for auto-install; Review before production",
      "verification_result": "Report the smallest successful task, files touched, warnings, and any missing setup."
    }
  },
  "outcome_feedback": {
    "endpoint": "https://www.openagentskill.com/api/agent/outcome",
    "method": "POST",
    "requires_resolve_event_id": true,
    "event_id_source": "Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.",
    "expected_outcomes": [
      "success",
      "failed",
      "not_relevant",
      "blocked_by_risk",
      "setup_required"
    ],
    "payload_template": {
      "event_id": "<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>",
      "skill_slug": "wl1650918245-codex-memory-guard",
      "task": "Use codex-memory-guard in an agent workflow",
      "agent": "codex",
      "outcome": "success",
      "install_used": true,
      "risk_blocked": false,
      "setup_required": false,
      "task_success": true,
      "output_quality": 4,
      "error_type": null,
      "human_review_required": false,
      "workspace": "sandbox",
      "time_to_useful_ms": 120000,
      "notes": "Report the smallest successful task, setup friction, files touched, and risk notes."
    }
  },
  "endpoints": {
    "web": "https://www.openagentskill.com/skills/wl1650918245-codex-memory-guard",
    "api": "https://www.openagentskill.com/api/agent/skills/wl1650918245-codex-memory-guard",
    "audit": "https://www.openagentskill.com/skills/wl1650918245-codex-memory-guard/audit",
    "eval": "https://www.openagentskill.com/api/agent/evals?slug=wl1650918245-codex-memory-guard&task=Use%20codex-memory-guard%20in%20an%20agent%20workflow&max_risk=medium",
    "resolve": "https://www.openagentskill.com/api/agent/resolve?task=Use%20codex-memory-guard%20in%20an%20agent%20workflow&agent=codex&max_risk=medium",
    "receipt": "https://www.openagentskill.com/api/agent/receipt?task=Use%20codex-memory-guard%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text",
    "install": "https://www.openagentskill.com/api/skills/wl1650918245-codex-memory-guard/install",
    "manifest": "https://www.openagentskill.com/api/registry/manifest/wl1650918245-codex-memory-guard"
  }
}

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Creator: wl1650918245
Source: wl1650918245/codex-memory-guard
Indexed by: OpenAgentSkill community index

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codex-memory-guard

Overview

Codex Memory Guard

Workflow

Task boundary policy

Memory policy

Hook behavior

Commands

Review the source

Source & usage notes

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Overview

Codex Memory Guard

Workflow

Task boundary policy

Memory policy

Hook behavior

Commands

Review the source

Source & usage notes

Agent access

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