code-yeongyu Ecomode Skill
Token-efficient model routing. This is a MODIFIER, not a standalone execution mode.
What Ecomode Does
Overrides default model selection to prefer cheaper tiers:
| Default Tier | Ecomode Override |
|---|---|
| THOROUGH | STANDARD, THOROUGH only if essential |
| STANDARD | LOW first, STANDARD if needed |
| LOW | LOW - no change |
What Ecomode Does NOT Do
- Persistence: Use
ralphfor "don't stop until done" - Parallel Execution: Use
ultraworkfor parallel agents - Delegation Enforcement: Always active via core orchestration
Combining Ecomode with Other Modes
Ecomode is a modifier that combines with execution modes:
| Combination | Effect |
|---|---|
eco ralph |
Ralph loop with cheaper agents |
eco ultrawork |
Parallel execution with cheaper agents |
eco autopilot |
Full autonomous with cost optimization |
Ecomode Routing Rules
ALWAYS prefer lower tiers. Only escalate when task genuinely requires it.
| Decision | Rule |
|---|---|
| DEFAULT | Start with LOW tier for most tasks |
| UPGRADE | Escalate to STANDARD when LOW tier fails or task requires multi-file reasoning |
| AVOID | THOROUGH tier - only for planning/critique if essential |
Agent Selection in Ecomode
FIRST ACTION: Before delegating any work, read the agent reference file:
Read file: docs/shared/agent-tiers.md
This provides the complete agent tier matrix, MCP tool assignments, and selection guidance.
Ecomode preference order:
// PREFERRED - Use for most tasks
delegate(role="executor", tier="LOW", task="...")
delegate(role="explore", tier="LOW", task="...")
delegate(role="architect", tier="LOW", task="...")
// FALLBACK - Only if LOW fails
delegate(role="executor", tier="STANDARD", task="...")
delegate(role="architect", tier="STANDARD", task="...")
// AVOID - Only for planning/critique if essential
delegate(role="planner", tier="THOROUGH", task="...")
Delegation Enforcement
Ecomode maintains all delegation rules from core protocol with cost-optimized routing:
| Action | Delegate To | Model |
|---|---|---|
| Code changes | executor | LOW / STANDARD |
| Analysis | architect | LOW |
| Search | explore | LOW |
| Documentation | writer | LOW |
Background Execution
Long-running commands (install, build, test) run in background. Maximum 20 concurrent.
Token Savings Tips
- Batch similar tasks to one agent instead of spawning many
- Use explore (LOW tier) for file discovery, not architect
- Prefer LOW-tier executor routing for simple changes - only upgrade if it fails
- Use writer (LOW tier) for all documentation tasks
- Avoid THOROUGH-tier agents unless the task genuinely requires deep reasoning
Disabling Ecomode
Ecomode can be completely disabled via config. When disabled, all ecomode keywords are ignored.
Set in ~/.codex/.omx-config.json:
{
"ecomode": {
"enabled": false
}
}
State Management
Use omx_state MCP tools for ecomode lifecycle state.
- On activation:
state_write({mode: "ecomode", active: true}) - On deactivation/completion:
state_write({mode: "ecomode", active: false}) - On cancellation/cleanup:
run
$cancel(which should callstate_clear(mode="ecomode"))