auto-decorrelation

auto-decorrelation is a skill for Claude Code, Codex from chrono-meta/forge-harness. It costs 148 tokens per session (9,989 once invoked), scanned C, original, MIT.

A coordinator that recruits an independent checking agent from another model family when one is available. It uses that agent to challenge important changes and reports honestly when no such checker can be used.

In plain words
What is it for?
Use it when verifying important code or instruction changes and you want an additional, adversarial review from a separate model system.
Why use it?
A different model family may notice mistakes that the original agent repeatedly misses.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also runs codex exec. Also seen: mentions CLAUDE.md; mentions subagents; positional $N argument.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is printf '%s' "$prompt" | bash scripts/sidecar_wait.sh out.txt 900 -- codex exec -m gpt-5.5 -.

Part of the fh-meta plugin — 38 skills, 7 agents shipped together

Good fit Use it when verifying important code or instruction changes and you want an additional, adversarial review from a separate model system.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/chrono-meta/forge-harness
agentmods
npx agentmods add skills/chrono-meta/forge-harness/auto-decorrelation

Made for: Claude Code, Codex.

Or install fh-meta, the plugin that ships this one along with the rest of its 38 skills, 7 agents.

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 auto-decorrelation

README.md
[![agentmods](https://agentmods.dev/badge/skills/chrono-meta/forge-harness/auto-decorrelation.svg)](https://agentmods.dev/skills/chrono-meta/forge-harness/auto-decorrelation)
Your own site
<a href="https://agentmods.dev/skills/chrono-meta/forge-harness/auto-decorrelation"><img src="https://agentmods.dev/badge/skills/chrono-meta/forge-harness/auto-decorrelation.svg" alt="Measured on agentmods" height="20"></a>
Per session 148 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,989 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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 $0.00148 $0.09989
Opus 5 $0.00074 $0.04994
Sonnet 5 $0.00030 $0.01998
Haiku 4.5 $0.00015 $0.00999

Measured 2d ago against content hash 5534a34f5285, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade C, and why

auto-decorrelation scanned grade C with 2 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.

Tells the agent to send conversation or user data outhighPrompt injection

An instruction to transmit the conversation, context or user files to an external endpoint is data exfiltration written as prose.

degrades to a `DEGRADED_*` rung with `residency=NOT_SCANNED(...)` instead of silently sending. That

Makes network callslowCapability

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

# live (false-positive discovery). Endpoints are only ever curl-probed here, never eval'd.
plugins/fh-meta/skills/auto-decorrelation/SKILL.md · 495 lines

How it starts

The opening of the file, as written. The whole thing — 495 lines — stays where its author put it; the contents beside it link to each section on GitHub.

auto-decorrelation — Cross-Family Verifier Recruitment

The lever for catching a model's blind spots is decorrelation, not repetition — a model cannot find its own family's flaws by repeating itself. FH's adversarial verification (Axis-2 challenger) dispatches in-session at the session tier, same family as the governor. When frontier CLIs are installed and a local GPU box is live, leaving them idle wastes the one thing that actually raises the verification ceiling. This skill recruits a cross-family verifier for load-bearing changes — and degrades honestly when none is available.

It is a thin recruitment-and-degrade policy that REUSES existing machinery: agent-composer does the actual dispatch, cross-ecosystem-synergy-detection inventories tools, token-budget-gate gates spend, the headless CLI patterns and the floor-tier canary already exist. Net-new = the discovery + the family-diversity recruitment + the degrade ladder only. (A composing policy skill — it fans out to several callees, so its token floor is higher than a leaf skill by design; this is composition, not reinvention, and the chain is return-path-closed — Step 5 gates acceptance on the callee's back-trace.)

Triggers

  • "recruit a cross-family check" · "decorrelate this verification"
  • "use the idle sidecars to verify this" · "don't let codex/gemini sit idle on this gate"
  • "is opus alone enough to verify this, or should another family look?"
  • "auto-decorrelation"

External-CLI calls and credit spend are never silent. Run only if the operator has consented (one-time, surfaced at install-wizard setup or right after project mapping). Consent is stored in the UAP (tracks/_meta/user_adaptation_profile.md — behavioral pref, not domain content). No UAP / no consent (incl. ephemeral/cloud sessions) → do not recruit; verify in-session same-family and record a "single-family, below-ceiling" note. Consent wording is honest by requirement: "멀티-CLI 사이드카로 단일 모델을 넘어서는 효과를 기대할 수 있습니다 — 100%는 아님(decorrelation은 향상이지 보장 아님). 가용 사이드카 없으면 자동으로 단일 세션으로 축소됩니다."

Read the full file on GitHub · 495 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.

  1. 2d ago Changed · +5 lines 5534a34f5285
  2. 3d ago Changed · +80 lines scan A → C 76c96270edf4
  3. 8d ago First seen · 410 lines · 148 tokens per session scan A 7e1ad99acf37

Subscribe to this mod's changes

auto-decorrelation is a skill published in the GitHub repository chrono-meta/forge-harness (14 stars, last pushed today), licensed MIT. It adds 148 tokens to every session and 9,989 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it C with 2 findings (tells the agent to send conversation or user data out, 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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