MCPInstall

performance-goal

Run an evaluator-gated performance optimization workflow over Codex goal mode with durable OMX artifacts and safe goal handoffs.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/yeachan-heo/oh-my-codex --skill performance-goal
  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 performance-goal 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.

Performance Goal Workflow

Use this skill when a user asks OMX to optimize performance and wants a goal-oriented loop rather than a one-off review.

Contract

  • OMX owns durable workflow state under .omx/goals/performance/<slug>/.
  • Codex goal mode owns only the active-thread focus/accounting primitive.
  • Shell commands do not mutate hidden Codex goal state. They write artifacts and emit model-facing handoff text.
  • No optimization work may start until an evaluator command and pass/fail contract exist.
  • Do not call update_goal({status: "complete"}) until the evaluator has a passing checkpoint and a completion audit proves the objective is done; then call get_goal again and pass that fresh snapshot to omx performance-goal complete --codex-goal-json.

CLI

Create the workflow and evaluator contract:

omx performance-goal create \
  --objective "Reduce CLI startup latency by 20%" \
  --evaluator-command "npm run perf:startup" \
  --evaluator-contract "PASS when p95 latency improves by 20% and regression tests pass" \
  --slug startup-latency

Emit the Codex goal handoff:

omx performance-goal start --slug startup-latency

Record evaluator evidence:

omx performance-goal checkpoint --slug startup-latency --status pass --evidence "benchmark + tests passed"
omx performance-goal checkpoint --slug startup-latency --status fail --evidence "benchmark regressed"
omx performance-goal checkpoint --slug startup-latency --status blocked --evidence "missing fixture"

Complete only after a passing checkpoint:

omx performance-goal complete --slug startup-latency --evidence "final evaluator evidence" --codex-goal-json <get_goal-json-or-path>

Agent Loop

  1. Run omx performance-goal create if no workflow exists.
  2. Run omx performance-goal start and follow the handoff:
    • call get_goal;
    • call create_goal only when no active goal exists and the objective is explicit;
    • work only against the evaluator contract;
    • after evaluator pass and completion audit, call update_goal({status: "complete"}), call get_goal again, and pass that snapshot to omx performance-goal complete --codex-goal-json;
    • after omx performance-goal complete succeeds, run /goal clear in the Codex UI before starting another goal in this same thread/session; OMX prints this terminal cleanup step but does not invoke hidden clear routes;
  3. Optimize in small reversible patches.
  4. Run the evaluator and related regression tests.
  5. Record each pass/fail/blocker with checkpoint.
  6. Complete only when the pass artifact exists and no required work remains.

Completion Gate

A performance goal is incomplete unless .omx/goals/performance/<slug>/state.json contains a lastValidation.status of pass and omx performance-goal complete receives a matching complete Codex get_goal snapshot via --codex-goal-json. Passing ordinary tests alone is not sufficient unless they are the declared evaluator contract.

Lifecycle: create_goal starts the Codex thread goal, update_goal({status: "complete"}) marks terminal success after the evaluator and audit pass, and /goal clear removes the completed thread goal when another same-thread goal is needed. OMX shell commands and hooks reconcile snapshots and print the cleanup instruction; they must not mutate hidden Codex goal state.

FAQ

What does the performance-goal skill do?

Run an evaluator-gated performance optimization workflow over Codex goal mode with durable OMX artifacts and safe goal handoffs.

How do I install performance-goal?

Run npx skills add https://github.com/yeachan-heo/oh-my-codex --skill performance-goal 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/performance-goal/ (personal) or .claude/skills/performance-goal/ (project).

Which AI agents can use performance-goal?

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 performance-goal 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 performance-goal?

It is published by yeachan-heo in yeachan-heo/oh-my-codex. It has 61 recorded installs.

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