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Codex Advisor — measured AI agent skill | DecimalAI

fcakyon/codex-advisor

SkillScore77Maintained

This skill should be used when the user asks for a "GPT second opinion", wants a "cross-model review", needs to "check a plan before committing", wants another view after repeated failures, or explicitly invokes "codex-advisor".

agent-toolingby fcakyon

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

Coding pack

decimalai skills pull fcakyon-codex-advisor

Get this skill — curl · raw file

curl -fsSL https://app.decimal.ai/s/fcakyon-codex-advisor/SKILL.md

Raw file: /s/fcakyon-codex-advisor/SKILL.md ↗ · machine-readable summary at /s/fcakyon-codex-advisor.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

22 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 4h ago

—-15% tokens0% turns77% of whole cases pass with skill (17/22)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-01	✗→✓	▲ Improved	46%	0%
case-04	✗→✓	▲ Improved	-31%	0%
case-05	✗→✓	▲ Improved	-55%	0%
case-07	✗→✓	▲ Improved	-55%	0%
case-08	✗→✓	▲ Improved	-71%	0%

Showing 5 of 22 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

fcakyon / claude-codex-settings

plugins/codex-advisor/skills/codex-advisor/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 8/3/2026Version v1Bundled 1 file · scripts

Skill contents

scripts/

SKILL.md

Codex Advisor

Get a focused second opinion from GPT through the Codex CLI, without handing the work over to it.

Route by tool

In Claude Code, delegate to the native codex-advisor agent. It receives the

recent conversation automatically, so do not paste the history yourself.

Elsewhere, run this exact shape from this skill's directory so the request

reaches standard input:

node scripts/ask_codex.mjs <<'REVIEW' the review request REVIEW

State the decision, the evidence behind it, and any constraint that changes the verdict. Name the paths that matter: the reviewer has read-only access and checks load-bearing claims itself.

Return the answer without rewriting it. If codex is missing or unauthenticated, surface the error and ask the user to install it or sign in. Never review in its place.

Reviewer

Pinned to gpt-5.6-sol at medium reasoning effort. Inside Codex that may be the model already doing the work, so set CODEX_ADVISOR_MODEL to a different one.

Weighing the answer

Give the verdict serious weight. If a step it recommends fails when tried, or a file contradicts a specific claim, surface the conflict instead of following the review blindly.

Want to see if fcakyon/codex-advisor would activate on your phrasing? Try it before you install — no LLM call, no signup.

Other measured skills in the registry, with their headline benchmark lift.