review-plan-security

review-plan-security is a skill for Claude Code from nirecom/agents. It costs 19 tokens per session (1,156 once invoked), scanned A, original, MIT.

A skill that asks OpenAI Codex CLI to review an implementation plan for security risks before coding begins. It checks the plan across three security areas.

In plain words
What is it for?
Use it on a detailed implementation plan to receive an approval, revision-needed result, or a security-risk summary.
Why use it?
It can expose security problems early, when changing the plan is easier than fixing implemented code.

Skill for Claude Code

Written for Claude Code: context: fork in frontmatter. Also seen: model in frontmatter; mentions subagents; mentions Codex.

Good fit Use it on a detailed implementation plan to receive an approval, revision-needed result, or a security-risk summary.

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Install with agentmods
npx agentmods add skills/nirecom/agents/review-plan-security
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.

Any agent
npx skills add nirecom/agents --skill review-plan-security
Clone the repo
git clone --depth 1 https://github.com/nirecom/agents

Made for: Claude Code.

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.

agentmods badge for review-plan-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/nirecom/agents/review-plan-security/github.svg)](https://agentmods.dev/skills/nirecom/agents/review-plan-security)
Your own site
<a href="https://agentmods.dev/skills/nirecom/agents/review-plan-security"><img src="https://agentmods.dev/badge/skills/nirecom/agents/review-plan-security/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.

agentmods 80×15 button for review-plan-security

Your own site · 80×15
<a href="https://agentmods.dev/skills/nirecom/agents/review-plan-security"><img src="https://agentmods.dev/badge/skills/nirecom/agents/review-plan-security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,156 The whole file, excluding the scripts and references it only reads on demand.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00019 $0.01156
Opus 5.5 $0.00008 $0.00462
Sonnet 5.5 $0.00004 $0.00231
Haiku 4.5 $0.00002 $0.00116

Measured 9d ago against content hash 6b302c46e160, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

review-plan-security 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 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/run-codex-review-loop.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/review-plan-security/SKILL.md · 39 lines

How it starts

The opening of the file, as written. The whole thing — 39 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review security implications of the implementation plan via Codex (round-continuing under the 2+1 cap: fix concerns and re-run).

Procedure

RPS-1. Resolve <PLANS_DIR> via skills/_shared/resolve-plans-dir.md. Identify <PLANS_DIR>/<session-id>-detail.md. Initialize EXTENSIONS_USED=0. RPS-2. Invoke "$AGENTS_MAIN_ROOT/skills/review-plan-security/scripts/run-codex-review-loop.sh" (Bash), exporting AGENTS_MAIN_ROOT, SESSION_ID, PLANS_DIR, EXTENSIONS_USED. Pass CTX_SURVEY_CODE, CTX_SURVEY_HISTORY as env vars when available. CTX_CONCERNS_LOG is auto-generated by the wrapper from the ledger (concern-ledger render-concerns-log, format security-plan) and auto-exported when non-empty — do not set it manually (#2185). Exit-code handling (SSOT: skills/_shared/codex-review-loop.md; round-continuing under the 2+1 cap):

  • exit 0 APPROVED → RPS-5 (no RISK items).
  • exit 1 NEEDS_REVISION → save stdout to <PLANS_DIR>/<session-id>-security-plan-codex-round-<N>-raw.md (<N> from <CONTROL_DIR>/security-plan-last-round.txt, <CONTROL_DIR> = node "$AGENTS_MAIN_ROOT/bin/workflow-control-dir" --session <session-id>); present concerns via RPS-3; address them, then re-run /review-plan-security — the round counter survives, so the re-run is counted as the next round.
  • exit 2 ESCALATE → run review-loop-summarize-concerns --budget-remaining 0; stop → RPS-3.
  • exit 6 HIGH_UNRESOLVED → save stdout to <PLANS_DIR>/<session-id>-security-plan-codex-round-<N>-raw.md (<N> from <CONTROL_DIR>/security-plan-last-round.txt); run review-loop-summarize-concerns --budget-remaining 0; stop → RPS-3. Re-run only after accepting per exit-codes.md "Escalation by format".
  • exit 3 → silently launch plan-security-reviewer subagent with model: = the model= line of node "$AGENTS_MAIN_ROOT/bin/resolve-role-model" --role reviewer; its APPROVED verdict → RPS-5; its NEEDS_REVISION verdict → RPS-3. Its prompt carries the canonical line of the rules/shell-commands.md Subagent Dispatch Prompts section.
  • exit 4 → HALT with blocking error; surface wrapper stderr; do NOT launch fallback agent.
  • exit 5 AUTO_EXTEND → same as exit 1 (concerns remain within the extension budget): present via RPS-3, address, re-run.
  • exit 7 FINALIZE_FAILED → <CONTROL_DIR>/security-plan-unresolved-concerns.json could not be written; HALT, surface the ## Concern Ledger: FINALIZE-FAILED line, launch no fallback, emit no sentinel. After an ESCALATE, confirm the artifact with bash "$AGENTS_MAIN_ROOT/bin/concern-ledger" check-finalized --plans-dir <PLANS_DIR> --session-id <session-id> --format security-plan first.
  • exit 9 → HALT; accept per exit-codes.md "Escalation by format", then re-run. RPS-3. Triage — per skills/_shared/priority-hierarchy.md, reject a concern only when it directly contradicts a decision already settled in the approved intent.md / outline.md (including their ## Accepted Tradeoffs).
  • Raising a topic the plan does not address is never grounds to reject.
  • Rejecting obliges naming the specific governing decision; a reject carrying no cited decision is a procedure violation.
  • Record each reject durably so it does not re-surface next round: bash "$AGENTS_MAIN_ROOT/bin/concern-ledger" reject --plans-dir <PLANS_DIR> --session-id <session-id> --format security-plan --id C<N> --reason "<cited decision>" (#2185).
  • A concern about the consequences or residual risk of a settled decision is no contradiction of it; only a demand to reverse the decision is.
  • Forward each surviving concern to RPS-4.
  • When every concern is rejected on a cited decision, treat the review as having no RISK items and go to RPS-5.
  • exit 0 carries no concerns and skips RPS-3. RPS-4. Present the surviving concerns with per-axis severity and proposed mitigations before implementation proceeds. RPS-5. Summary — APPROVED (including the all-rejected case): report no RISK items, and on the all-rejected path also list every rejected concern beside the settled decision cited against it; NEEDS_REVISION: summarize the RPS-4 mitigations.

Read the full file on GitHub · 39 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago Changed · +1 lines 6b302c46e160
  2. 11d ago Changed bb36bdbe75eb
  3. 17d ago Changed 520d979f2776
  4. 21d ago Changed 7fcccc52407a
  5. 29d ago Changed · +2 lines f7db3f20b95b
  6. 1mo ago Changed · -2 tokens per session 7480be19db84
  7. 1mo ago Changed e1abec315c40
  8. 1mo ago Changed · +7 lines 4be989fb08c0
  9. 1mo ago Changed · -1 lines 2a34476192ba
  10. 1mo ago First seen · 30 lines · 21 tokens per session scan A 6045c20b529b

Subscribe to this mod's changes

review-plan-security is a skill published in the GitHub repository nirecom/agents (3 stars, last pushed today), licensed MIT. It adds 19 tokens to every session and 1,156 once invoked, about $0.0001 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 2026-08-31.

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