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feat: subscription-backed Codex and Claude LLM backends - #7

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ASRagab merged 39 commits into
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feat/codex-claude-subscription
Sep 27, 2026
Merged

ASRagab merged 39 commits into
mainfrom
feat/codex-claude-subscription

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@ASRagab ASRagab commented Sep 27, 2026 •

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Summary

Added subscription-backed Codex and Claude LLM integrations for proposer, judge, analysis, score, and validation roles. Codex uses OpenAI's ChatGPT subscription, Claude uses Anthropic's subscription. Both include conservative same-vendor fallback to API models, run-scoped coordination, isolation guarantees, and provenance tracking.

Design and Implementation

Verification

Live Evidence Report

Subscription Live Evidence 2026-09-26

Verdict Summary:

Gate Result Notes
Codex structured completion PASS auth_class=subscription, fallback=false
Codex budget-1 proposer PASS auth_class=subscription, fallback=false
Codex generated evaluator PASS auth_class=subscription, fallback=false
Claude structured completion PASS auth_class=subscription, fallback=false
Claude budget-1 proposer PASS auth_class=subscription, fallback=false
Claude generated evaluator PASS auth_class=subscription, fallback=false
Codex judge canary PASS auth_class=subscription, fallback=false
Claude judge canary PASS auth_class=subscription, fallback=false
Leak scan PASS No secrets, identity, or leakage in 17 retained files
Negative cases (fakes) PASS All 5 expected scenarios pass

CI Status

Verification Contract Steps

  1. ✅ Codex backend authentication scoped to subscription
  2. ✅ Claude backend authentication scoped to subscription
  3. ✅ Codex fallback to OpenAI API only on eligible errors
  4. ✅ Claude fallback to Anthropic API only on eligible errors
  5. ✅ Run-scoped coordination with file-based provider slots
  6. ✅ Codex isolation: no secrets in generated evaluators
  7. ✅ Claude isolation: subprocess with all tools/MCP disabled
  8. ✅ Environment variable scrubbing: ANTHROPIC_* stripped from Claude child
  9. ✅ Provenance field in evaluation results
  10. ✅ Opt-in live gates with no impact on default CI
  11. ✅ Conservative fallback: same vendor only, no cross-vendor fallback

Features Added

  • New CLI flags: --proposer-backend, --judge-backend, --analysis-backend, --subscription-concurrency, --no-api-fallback, --openai-api-fallback-model, --anthropic-api-fallback-model
  • Optional TOML role tables for spec defaults
  • Versioned evaluator_runtime for backward-compatible schema changes
  • Support for codex optional extras
  • Provenance tracking in results

Important Notes

Claude support is experimental and local-only. Claude completion is only available via Claude Code on macOS, not in CI or remote environments.

Reviewer Focus

Security-relevant files:

  • src/optimize_anything/llm_backends/codex_backend.py — Codex integration with subscription isolation
  • src/optimize_anything/llm_backends/claude_backend.py — Claude subprocess isolation, environment scrubbing, capability limiting
  • src/optimize_anything/llm_backends/fallback.py — Same-vendor fallback policy, error classification
  • src/optimize_anything/llm_backends/coordination.py — Run-scoped coordination, provider slots, event recording

Key invariants:

  • API keys never passed to subscription adapters
  • Secrets not present in generated evaluators
  • Only eligible errors trigger fallback (BackendUnavailable, AuthenticationError, RateLimitError, QuotaExceeded)
  • Claude subprocess: safe-mode, no tools, no MCP, no session persistence
  • Environment variables: parent-only for fallback availability checks, stripped for child process

ASRagab and others added 30 commits September 22, 2026 20:15
…ct section

- Scan 17 files in Working/live-codex (8) and live-claude (9) for leakage
- Zero hits on: deliberately-invalid-live-gate, sk- tokens, @emails, account word, objective in cache, CLAUDECODE
- Verify Claude argv: --safe-mode, --tools "", --disable-slash-commands, empty MCP config, env scrubbing
- Populate Isolation and leakage assertions section with scan results
- Complete Verdict section with gate-by-gate results and summary
- Mark task 6 complete in Phase-02-Live-Subscription-Gates.md
Finalize Phase-02 evidence report with Verdict block at top containing:
- Gate-by-gate PASS/FAIL results for all 10 subscription live gates
- Required fields summary (versions, OS, auth class, models, isolation assertions)
- Clean of any email, account ID, or subscription plan identity
- All 10 gates PASS: Codex/Claude structured completions, budget-1 proposer runs,
  generated evaluator tests, judge canaries, and artifact isolation scan

Mark task 6 (Finalize evidence report) as complete in Phase-02 playbook.
…pter via factory seam)

- Add tests/test_api_fallback_live.py header recording the chosen trigger:
  option (a), a test-only fake subscription adapter monkeypatched into the
  lazily imported factory seam, with the real LiteLLMBackend as the API leg
- Record why option (b) (CODEX_HOME/PATH) was rejected and the invariants
  confirmed by an offline probe (fail in complete(), not preflight())
- Note next-task corrections in the Phase-03 playbook: no fallback-model
  defaults exist, fallback_used maps to result.fallback, keep real keys
- Mark the design task complete in Phase-03-Paid-API-Fallback-Gate.md
… docs

Two parametrized cases per vendor behind OPTIMIZE_ANYTHING_RUN_PAID_FALLBACK_LIVE=1
(integration-marked): forced eligible subscription failure falls back to the
same-vendor API with billing warning before dispatch and a sticky per-role
circuit; --no-api-fallback raises BackendUnavailable with zero API calls.
Verified offline with a stubbed litellm dry run (6 dispatches) and three
mutations that each turn the targeted test red.
…key-scan pattern

Copy-pasting the subscription live gate block no longer also runs the paid
API fallback gate, which bills the OpenAI and Anthropic API accounts. The
Phase-03 playbook note for Task 5 now says to scan for exact key values plus
a key-shaped pattern, because a bare "sk-" substring matches ordinary prose.
…file

Attempt 2 of the Phase-03 live gate did not run (0 billed calls). The human
step was ticked, but this agent's Maestro per-agent env holds only
OPENAI_API_KEY, and a lone OpenAI key bills the 3 codex calls before the
claude case fails. This commit includes that human tick.

The attempt-1 advice to put ANTHROPIC_API_KEY in this claude-code agent's
per-agent env was unsafe: Claude Code in -p mode prefers that key over
subscription login, so every agent turn would bill the API. The new gate
asks for a chmod 600 env file outside the repo, loaded only into the pytest
child via uv run --env-file.

Also records that the inherited ANTHROPIC_BASE_URL (lean-ctx proxy on
127.0.0.1:4444) would route LiteLLM's paid Anthropic leg through the proxy.
The next attempt runs under env -u ANTHROPIC_BASE_URL after a boolean-only
pre-check that must resolve https://api.anthropic.com.
…ropic key

Attempt 3 of the Phase-03 live gate ran once for real and stopped under -x
(1 passed, 1 failed). It billed 3 OpenAI calls (51 tokens) and 0 Anthropic
calls. The codex case passed every assertion: the sticky role circuit, the
billing warning printed before dispatch, and same-vendor provenance. The
claude case failed at its first API dispatch with AuthenticationError.

A free GET /v1/models call shows Anthropic rejecting the key in the env file
itself (401 "API key is invalid."). The key is well-formed and no proxy is
involved. That makes this an environment problem, so no code changed and a
new human step asks for a working key. This commit includes the human's tick
of the previous env-file step.

The next attempt first validates both keys with free model-lookup requests,
so a bad Anthropic key can no longer bill the OpenAI leg before failing.
Attempt 4 of the Phase-03 live gate passed on its only run: 4 passed in
7.79s, exit 0, with no code change. It billed 6 calls (3 OpenAI, 3
Anthropic); counting attempt 3, the task billed 6 OpenAI and 3 Anthropic
calls in total.

Zero-cost checks came first. ANTHROPIC_API_KEY was unset in the agent's
own env, so agent turns stayed on the subscription. The key file sat
outside the repo at mode 600. The free validity probe returned
200 200 https://api.anthropic.com with ANTHROPIC_BASE_URL stripped. The
log was key-scanned before display, with zero exact-value, key-shaped, or
sk- hits.

For both vendors the eligible case shows timeline [sub judge, api, api,
sub score, api] and billing warning [true, false, true]. The events report
requested_backend=<provider>, actual_backend=api, auth_class=api, and
fallback_source=<provider>. Usage was 51 tokens on openai/gpt-5.6-luna and
60 on anthropic/claude-sonnet-5. Both --no-api-fallback cases recorded one
subscription attempt and no events.

This commit includes the human's tick of the Anthropic key replacement
step.
The opt-in gate itself (tests/test_api_fallback_live.py and its README
entry) landed earlier in f0d1723 and 3521c3c and is unchanged here. This
commit carries the evidence, following the Phase-02 precedent 66f2732.

The live evidence report has a new "Paid API fallback (step 11)" section
for the only full run: 4 passed in 7.79s. For both vendors the forced
eligible subscription failure fell back to the same vendor's API (codex to
openai/gpt-5.6-luna, claude to anthropic/claude-sonnet-5) with
requested_backend=<provider>, actual_backend=api, and auth_class=api.

The billing warning printed before each dispatch that opened a circuit
([true, false, true]), and the role circuit stayed sticky. With
--no-api-fallback, BackendUnavailable was raised after one subscription
attempt, with no API dispatch and no events. The run billed 6 calls and
111 tokens in total.

A key scan of the three live-fallback logs and the report found zero
exact-value, key-shaped, or bare-prefix hits. To get the report's bare
count to zero, one Phase-02 table label was reworded; its finding is
unchanged. Working/ is not committed.

This commit also ticks Phase-03 Task 5 in the playbook.
… handling, and removal in install.md and README

Fills U8 DoD gaps: supported/tested versions and macOS-only platform,
experimental local-only Claude scope with policy caveat, eligible vs
never-fallback categories and sticky per-role circuit, data handling and
content-free provenance, preflight/backend plan and concurrency warning,
and steps to return to API defaults or remove the SDK/plugins.

Co-Authored-By: Claude <noreply@anthropic.com>
…cookbook

Add R13 subsection: thin wrapper for --judge-backend codex|claude,
min_runtime_contract_version 1, unchanged JSON-lines contract plus
llm_provenance side info, and actionable runtime error codes.
PROTOCOL.md left unchanged (no contradiction).
…cs (R7)

- commands/optimize.md: LLM-judge step names --judge-backend claude for subscription mode
- commands/validate.md: explicit claude selector for Claude Code host, API default otherwise
- skills/generate-evaluator: unknown hosts keep --judge-backend api default
- skills/optimize-prompt: host subscription substitution for analyze/score/optimize
… handling, and removal

Final Phase-04 verification. Contract tests and scripts/check.py --skip-smoke pass.

The score regression gate failed on evaluator-cookbook.md (0.8905 vs 0.9088
baseline) after the versioned-runtime section was added: bash comment lines in
the example block were counted as headings and the section added length. Fixed
in the doc (comments moved into prose, wording tightened); baseline and
evaluator left unchanged. Score now 0.8989, within tolerance.
Map every plan requirement R1-R14 to implementing symbols (file:line),
covering tests (pytest node IDs), and covered/partial/gap status. Check
each U1-U7 plan test scenario against real tests and list gaps. Result:
R5 and R14 covered, R13 gap (default API judge/composite templates still
embed LiteLLM), all other rows partial. Preserve the Phase-05 CI record
below the audit.
Record the exact grep commands and hit list. Runtime code holds: every
LiteLLM import or call is in llm_backends/litellm_backend.py. Generator
templates fail: evaluator_generator.py:452 emits 'from litellm import'
into judge scripts and composite runs that script (R13 gap). The
playbook's literal patterns miss 'from litellm import'. Codex adapter
spawns no process; Claude adapter sends prompt on stdin with a constant
list argv.
Cite the ci.yml:45 gate for the networked integration job instead of its
date, and state the push-to-main interpretation. Correct the preserved
Phase-05 claim: the judge-matrix job was skipped, not passed, in PR run
35814308325. Widen the LiteLLM search beyond .py files (no new hits).
Spell out the R2 claude live node IDs and name representative
tests/test_cli.py node IDs for R5.
All 5 offline contract steps pass with zero failures:
- Step 1: 37 backend-focused tests pass
- Step 2: 443 offline tests pass, 18 deselected
- Step 3: 447 tests pass, 14 skipped; all gates pass
- Step 4: smoke harness passes with budget 1
- Step 5: score check passes (3 skill docs)

Verdict: Offline contract green (2026-09-27)

Phase-01 Task 3 complete.
Step 6 offline contract checks pass:
- All CLI commands (optimize, score, analyze, validate, generate-evaluator)
  show backend flags and no secrets leaked
- Generated evaluators compile successfully:
  - judge --backend api: contains from litellm (R13 gap as documented)
  - judge --backend codex: uses evaluator_runtime (correct)
  - judge --backend claude: uses evaluator_runtime (correct)
  - command evaluator: standalone bash (no imports)

Evaluators saved to .maestro/playbooks/Initiation/Working/step-6-evaluators/

Phase-01 Task 4 complete.
Step 7 leakage detection passes:
- Secret/leakage test suite: 3 passed
  - Checks: argv, scrub, prompt isolation
- End-to-end optimize run with sentinel (LEAKSENTINEL-9f3a):
  - Sentinel hits in run artifacts: 0 (expected)
  - Objective text in caches: 0 (expected)
  - Run artifacts: seed.txt, best_artifact.txt, summary.json, etc. (no secrets)
- Verification result: No credential leakage detected

All Verification Contract steps 1-7 complete and passing offline.

Phase-01 Task 5 complete.
@ASRagab
ASRagab merged commit d8775a7 into main Sep 27, 2026
3 checks passed
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