isomux-peer-review

isomux-peer-review is a skill for Claude Code, Codex from nmamano/isomux. It costs 28 tokens per session (475 once invoked), scanned A, original, MIT.

A tool for reading another coding agent’s current conversation and sending that agent feedback directly.

In plain words
What is it for?
Use it to inspect a peer’s task, identify useful feedback, and message the peer through the agent system. The available description does not specify all review details.
Why use it?
It avoids switching between agents or manually finding conversation logs when you need to review someone else’s work.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to inspect a peer’s task, identify useful feedback, and message the peer through the agent system. The available description does not specify all review details.

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Install with agentmods
npx agentmods add skills/nmamano/isomux/isomux-peer-review
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 nmamano/isomux --skill isomux-peer-review
Clone the repo
git clone --depth 1 https://github.com/nmamano/isomux

Made for: Claude Code, Codex.

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 isomux-peer-review

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/nmamano/isomux/isomux-peer-review"><img src="https://agentmods.dev/badge/skills/nmamano/isomux/isomux-peer-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 475 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 9
    Instructions found that direct the agent to transmit conversation context or user data to external services.
    Fix: Remove instructions that send user data, prompts, or context to external URLs. If telemetry is needed, use documented, privacy-preserving methods.
How audits are shown
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 $0.00028 $0.00475
Opus 5 $0.00014 $0.00237
Sonnet 5 $0.00006 $0.00095
Haiku 4.5 $0.00003 $0.00047

Measured 10d ago against content hash 01b5008e3a01, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

isomux-peer-review scanned grade A with 1 finding 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 10d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

1. If a peer name was supplied, look up their agent ID via the agent manifest: `curl -s localhost:4000/agents -H "Authorization: Bearer $ISOMUX_AGENT_TOKEN"` (4000 is the default isomux server port; adjust if your office
skills/isomux-peer-review/SKILL.md · 19 lines

What it actually says

Review another agent's ongoing conversation and send feedback directly to that agent via the inter-agent message API. Note: reading a full conversation log can be token-hungry. Be selective about what you read - skim or skip thinking entries and tool results where possible.

  1. If a peer name was supplied, look up their agent ID via the agent manifest: curl -s localhost:4000/agents -H "Authorization: Bearer $ISOMUX_AGENT_TOKEN" (4000 is the default isomux server port; adjust if your office runs on a different one). Match the name case-insensitively. Otherwise try to infer the peer from context - e.g., an agent the boss and you have already paired or consulted with in this session. If there's a clear inference, use it (and briefly confirm who you picked). Otherwise, list candidates (prefer agents whose cwd matches yours) and ask the boss to pick. You need the peer's agent ID to POST messages to them.
  2. Find the target agent's current session: read sessions.json in their logDir to identify the most recent session.
  3. Read the session's JSONL log file from the agent's logDir. These log files can be large. Use your judgment about whether to skip parts of it - thinking entries and tool_result content are the noisiest and can often be skipped or skimmed. Focus on user messages, assistant text, and tool call names/arguments.
  4. Send your feedback directly to the reviewed agent via POST /agents/<agentId>/message. Cover:
    • Is the agent on track toward what their boss asked for?
    • Any bugs or mistakes in what it's produced so far?
    • Red flags like going in circles or ignoring boss feedback?
    • Concrete suggestions for course-correction if needed. Frame the message clearly as peer-review feedback so the reviewed agent knows it's an outside perspective, not boss authority.
  5. Briefly confirm to your boss which agent you reviewed and the gist of what you sent. Do not paste the full feedback back into your own chat - it already lives in the other agent's inbox.
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. 10d ago First seen · 19 lines · 28 tokens per session scan A 01b5008e3a01

Subscribe to this mod's changes

isomux-peer-review is a skill published in the GitHub repository nmamano/isomux (37 stars, last pushed today), licensed MIT. It adds 28 tokens to every session and 475 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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