Eval

Eval Command

Native Subagent Protocol (Codex)

Codex supports native subagents. Delegate with spawn_agent, coordinate with send_input, collect via wait_agent, and clean up with close_agent.

Execution preference:

1. Use native subagents first for independent workstreams (parallel when possible).
2. Merge results in main thread and run final verification.
3. Fallback only when delegation is blocked: use the [ANALYST]/[ARCHITECT]/[EXECUTOR]/[REVIEWER] structure in a single response.

Minimal orchestration pattern:

spawn_agent -> send_input (optional) -> wait_agent -> close_agent

Manage eval-driven development workflow.

Usage

$eval [define|check|report|list] [feature-name]

Define Evals

$eval define feature-name

Create a new eval definition:

1. Create .codex/evals/feature-name.md with template:

## EVAL: feature-name
Created: $(date)

### Capability Evals
- [ ] [Description of capability 1]
- [ ] [Description of capability 2]

### Regression Evals
- [ ] [Existing behavior 1 still works]
- [ ] [Existing behavior 2 still works]

### Success Criteria
- pass@3 > 90% for capability evals
- pass^3 = 100% for regression evals

2. Prompt user to fill in specific criteria

Check Evals

$eval check feature-name

Run evals for a feature:

1. Read eval definition from .codex/evals/feature-name.md
2. For each capability eval:
   • Attempt to verify criterion
   • Record PASS/FAIL
   • Log attempt in .codex/evals/feature-name.log
3. For each regression eval:
   • Run relevant tests
   • Compare against baseline
   • Record PASS/FAIL
4. Report current status:

EVAL CHECK: feature-name
========================
Capability: X/Y passing
Regression: X/Y passing
Status: IN PROGRESS / READY

Report Evals

$eval report feature-name

Generate comprehensive eval report:

EVAL REPORT: feature-name
=========================
Generated: $(date)

CAPABILITY EVALS
----------------
[eval-1]: PASS (pass@1)
[eval-2]: PASS (pass@2) - required retry
[eval-3]: FAIL - see notes

REGRESSION EVALS
----------------
[test-1]: PASS
[test-2]: PASS
[test-3]: PASS

METRICS
-------
Capability pass@1: 67%
Capability pass@3: 100%
Regression pass^3: 100%

NOTES
-----
[Any issues, edge cases, or observations]

RECOMMENDATION
--------------
[SHIP / NEEDS WORK / BLOCKED]

List Evals

$eval list

Show all eval definitions:

EVAL DEFINITIONS
================
feature-auth      [3/5 passing] IN PROGRESS
feature-search    [5/5 passing] READY
feature-export    [0/4 passing] NOT STARTED

Arguments

$ARGUMENTS:

• define <name> - Create new eval definition
• check <name> - Run and check evals
• report <name> - Generate full report
• list - Show all evals
• clean - Remove old eval logs (keeps last 10 runs)