MCPInstall

age

Review a diff, PR, branch, or path across thirteen dimensions. Emit a severity-grouped findings report. Use when the user wants a code review. Trigger on "review this", "/age", "is this safe to merge", or "find bugs". Also trigger on "spot security issues", "check for slop", "review my PR", or "what's wrong with this code". Review every requested dimension. Review all thirteen dimensions by default. Do not apply fixes. Route them to /cure. Do not harden tests; route that work to /press.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/paulnsorensen/easy-cheese --skill age
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads age automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

/age

Review a diff or scoped path before merging or after /press. Use this skill whenever the user wants evidence-backed observations rather than an approval verdict.

Phase entry

Run python3 skills/age/scripts/age.pyz wheypoint-resolve --ref <slug>. authoritative uses the record; its working_context is the first batched tilth_read. not-found proceeds cold; legacy shows its source and slug, then proceeds. gated, ambiguous, and error stop and show the payload. Show advisory stale-commit and grounded-path-missing findings. Keep its record.revision_id as <base> (§ Base revision).

Inputs

/age [<ref-or-range>] [--scope <path>]... [--slug <slug>] [--effort quick|normal|deep] [--overall] [--full] [--safe] [--open-pr] [--auto] [--hard] [--html]
/age <slug> [--effort quick|normal|deep] [--overall] [--full] [--safe] [--open-pr] [--auto] [--hard] [--html]

Repeat --scope <path> for each reviewed path. Every report needs a slug. Take the slug from the <slug> form. Take it from --slug <slug> on a scoped or range review. Derive it with slugify only when the caller supplies neither. A caller in a pipeline always passes the pipeline slug.

--full expands the ## Low section when ten or more low-severity findings exist. The default report collapses that section to a one-line summary.

--safe re-introduces cure selection. --open-pr propagates through /cure to terminal /plate. A new PR follows /plate's explicit-choice and review-shape policy.

After phase entry, use .cheese/press/<slug>.md (if present) as Press context.

Review the current working diff. For a <ref-or-range>, review that range. Review the current working diff when the user supplies neither input. If the base branch is unclear, ask or use the repository's documented default.

--auto is the propagated autonomous-mode flag from /cook --auto. See ## Handoff and references/handoff-detail.md § Auto mode for the cap rule and the full chain.

handoff_context.wiki_hits is optional routed input from /cheese. Each hit carries page, line, and why. Reuse each valid hit before you ground the review again. Render the reused hits in ## Wiki context.

--hard propagates through /cure to /plate. Age never fires the gate. /plate gives /hard-cheese the final verified artifact state before publication.

--html emits a static HTML copy alongside .cheese/age/<slug>.md. Write the markdown first. Then run python3 skills/age/scripts/age.pyz html-report --report .cheese/age/<slug>.md --slug <slug>. Print the returned path. The HTML groups findings by severity into the shared HTML shell. The output is offline and uses no CDN or JS.

Read ../cheese/references/harness-portability.md for helper resolution, sub-agent dispatch, GitHub operations, and handoff transitions. Prefer the bundled or repo-local helper. Treat ${CLAUDE_SKILL_DIR} as an optional host-provided fallback. Slash commands are host renderings, not the control model. The handoff blocks below define the portable contract.

Review effort and scope

Use --effort quick|normal|deep; the default is normal. Use --overall for full subject fan-out across the review target. --full still controls finding visibility, not review scope.

Review dimensions

Review correctness, security, encapsulation, spec, complexity, deslop, assertions, NIH, efficiency, telemetry, conventions, altitude, and reframe. Assign one blocker, high, medium, or low severity to each finding. Use references/dimensions.md for severity rules and recommendation shapes. This workflow omits the git-history/precedent dimension.

Flow

  1. Identify the diff, scope, and relevant specification or issue. Read references/fan-out.md for the context checklist and deterministic planning contract. Collect instruction sources, build context, and run scripts/age.pyz age-route through its bundle path. Use the assignments, effort, dispatch batches, and capability restrictions. Assemble shared evidence and the plan before the lock; do not launch a separate classifier agent. The lock covers the packet, because the packet is review evidence. Then run python3 skills/age/scripts/age.pyz review-lock --slug <slug> to lock the production tree. Use the resolved slug from ## Inputs. Step 5 rejects the report when a production file changes.
  2. Gather evidence from the diff, touched files, tests, and callers/imports. Resolve the upstream report with python3 skills/age/scripts/age.pyz artifact-path --phase press --slug <slug>. Validate its preamble with python3 skills/age/scripts/age.pyz read-handoff-slug --phase press --slug <slug>. That command returns preamble fields only. Read the resolved file itself for the ## Review follow-ups section and every unresolved item. Copy each unresolved item into a ## Press findings sub-section. Keep the artifact and baseline values from that preamble for step 5. /cure reads only .cheese/age/<slug>.md.

If no press report exists but a cook handoff exists, record press: skipped (see ## Output). Print the warning at handoff. If no cook artifact exists either, omit the marker and continue. If .cheese/glossary/<slug>.md exists, read it to flag naming drift as a deslop finding. 3. Review every dimension. Omit dimensions with no findings. Report every defect, however minor. Do not filter findings by perceived significance. Verification filters findings after reconciliation. Do not report a gate failure that matches the diff's recorded baseline: block. Read ../cook/references/quality-gates.md for the baseline rules. Report only new or changed failures. 4. Compute severity per finding (base + location bump + compounding bump, capped at blocker). Group findings by severity (## Blocker → ## High → ## Medium → ## Low). Order findings by file within each severity group. Follow references/fan-out.md for verification and the deep-only gap sweep before writing. 5. Write the report body to .cheese/age/<slug>-body.md. Write the body only. Do not write the handoff preamble into that file. Do not write .cheese/age/<slug>.md yourself. The gated writer creates it. Compute the recommended set first (see ## Handoff). Set <next> to cure when that set is not empty. Set <next> to done when that set is empty. Set <artifact> to the upstream report path from step 2. Use "" only when no upstream report exists. Set <baseline> to the baseline block from that upstream handoff. Omit --baseline only when the upstream handoff has none. Run python3 skills/age/scripts/age.pyz write-handoff-artifact --phase age [--base <base>] --slug <slug> --status ok --next <next> --artifact "<artifact>" --orientation "<one-line orientation>" --durable-flags "<none | one line per flag>" --baseline "<baseline>" --grounded <path[#start-end]> --body-file ".cheese/age/<slug>-body.md".

Print the path. Only a new packet for this slug permits recovery; follow references/packet.md § Late evidence. Other changes require a fresh review. 6. Hand off (see ## Handoff below).

Sub-agent fan-out

/age plans independent review subjects with the contextual age router (src/easy_cheese/shared/fanout/age_route.py). See references/fan-out.md, references/packet.md, and references/sub-agent-gate.md for mechanics.

Call each source-code backend through the shared code-intelligence-routing.md contract.

Output

Use ../cheese/references/formatting.md for cross-cutting house style and citation form. This section defines the findings-report shape. formatting.md defines the voice rules and footnote primitive.

The gated writer writes .cheese/age/<slug>.md. It puts the minimum handoff slug at the top. The slug carries status, next, artifact, durable_flags, baseline, and one-line orientation. Supply each value through the step 5 command. Write the body below into .cheese/age/<slug>-body.md, with no preamble. references/report-example.md § Body order defines the section order, the exact finding format, and the full skeleton. Read it before you write the body.

Use the voice-kernel scale for per-finding confidence: (see references/voice.md § Reasoning posture). Use certain for direct evidence from a diff/code read or command output. Use speculating for an inference from an indirect signal. Do not ship a don't know grading as a finding row. Gather the missing evidence or drop the claim. Reserve don't know for the report-level ## Confidence line. Add suppressed lows to the cure-selection table only when the user passes --full.

Set status: ok when the review completes. Set status: halt: <reason> when the review cannot reach evidence. Follow the handback contract. Derive next from the recommended set that ## Handoff computes. Keep every finding in the report, whatever next says. Set durable_flags: to none by default, as in cook's gate. When the plan or host restricts coverage, record the actual restriction in durable_flags and ## Confidence, not a size-only warning. Record the resolved worker types under ## Agent resolution in the body. Record dispatch metadata for every topology. Use the fields in report-example.md. Check supplied dispatch observations with scripts/age.pyz review-plan-check before writing; absent observations remain explicitly unobserved.

Print Age report: .cheese/age/<slug>.md. When press: skipped is set, print the following warning: Warning: no .cheese/press/<slug>.md. Re-run /cook or /press <slug>, or continue with /cure. When the user passes --html, print the HTML path that html-report returns. The render command appears under --html in ## Inputs.

Handoff

Pipeline: culture → mold → cook (⇄ press) → [age] → cure → plate

Compute the recommended set. Use the all-medium, cheap composite. Include the medium floor (blocker+high+medium). Also include every Low with fix-cost-now: contained.

Decide whether to act or ask.

This selection is the only one. ## Output derives next from it. A review with contained lows and no medium finding has a non-empty set. That review sets next: cure and keeps every low finding in the report.

  • Empty set — Set next: done. Print the report path. Stop.
  • Reason to ask — Ask when a set member has fix-cost-now: sprawling or fix-cost-later: structural. Also ask when two findings conflict. Also ask when the user passes --safe. Read references/handoff-detail.md first. Render the gate per ../cheese/references/handoff-gate.md. Pre-select the composite. Mark each heavy row.
  • Otherwise — Act. Announce the selection. Dispatch /cure per references/handoff-detail.md § Dispatch. Do not render a gate.

--auto substitutes a severity-floor selection and its own chain. Read references/handoff-detail.md § Auto mode before an --auto run. That file also defines the no-chain override under /cook's fan pathway.

Rules

Review is not a verdict. Explain where to look and why. Do not edit production files. The step 1 review lock enforces this rule. /cure applies each fix. Do not raise a finding for a gate failure that matches the recorded baseline: block. Default to acting. Auto-select the recommended set. Dispatch /cure without a gate. Ask first only for a genuine reason or when --safe is active. Treat an empty recommended set as a clean stop, not a question. Do not invent evidence. Cite files, diffs, commands, or unavailable-source notes. Agree when the diff is fine. Treat an empty dimension as a valid outcome, not a gap to fill. Keep confidence qualitative (certain | speculating | don't know) in the report and each finding. Never use a numeric score. Give each finding a location and recommendation. Write recommendation: and optional invariants: per references/report-example.md. Do not add JSON sidecars or tag-anchored fix payloads. /cure reads the markdown directly. Apply references/voice.md (output discipline, reasoning posture, confidence vocabulary).

References

  • Read the generated command inventory in references/commands.md.
  • Read references/dimensions.md before grading a finding.
  • Read references/fan-out.md before every review.
  • Read references/packet.md before assembling a fan-out context packet.
  • Read references/sub-agent-gate.md before a sub-agent dispatch.
  • Read references/handoff-detail.md before the selection gate or a /cure dispatch.
  • Read references/report-example.md § Body order before writing the report body.
  • Read references/packet.md § Evidence tools and fallbacks before gathering evidence.
  • Read references/handoff-detail.md § Auto mode before an --auto run.
  • Read references/voice.md before writing the report.
  • Read the applicable Rust, TypeScript, Python, Shell, or Go catalog before grading deslop.

Agent resolution

Resolve every subject worker and fresh-context review through ../cheese/references/agent-resolution.md.

WorkPreferred typesPermissions/isolationMinimum powerEffortFallback
Review a diff or assigned subjectsreviewerread-only, fresh-contextpowerfulhighcompatible reviewer, then general

The router sets each assignment's effort to low, medium, or high. Pass that assignment value to its worker, not the plan's quick, normal, or deep review mode.

The report body carries the shared agent_resolution block under ## Agent resolution.

FAQ

What does the age skill do?

Review a diff, PR, branch, or path across thirteen dimensions. Emit a severity-grouped findings report. Use when the user wants a code review. Trigger on "review this", "/age", "is this safe to merge", or "find bugs". Also trigger on "spot security issues", "check for slop", "review my PR", or "what's wrong with this code". Review every requested dimension. Review all thirteen dimensions by default. Do not apply fixes. Route them to /cure. Do not harden tests; route that work to /press.

How do I install age?

Run npx skills add https://github.com/paulnsorensen/easy-cheese --skill age in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/age/ (personal) or .claude/skills/age/ (project).

Which AI agents can use age?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is age safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains age?

It is published by paulnsorensen in paulnsorensen/easy-cheese. It has 649 recorded installs.

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