The council

The Council

Convene OpenAI Codex and Google Gemini as an advisory board. Both run in parallel via their CLIs — Codex with read-only codebase access, Gemini reviewing the fully-inlined request — and return independent analyses that Claude synthesizes.

Prerequisites

• Project has a CLAUDE.md file in the working directory
• At least one of the following CLIs installed and authenticated:
  • codex CLI (npm i -g @openai/codex)
  • agy CLI (antigravity CLI)

Permission Setup

Before running any council scripts, request all necessary bash permissions upfront at the start of the session. This prevents permission prompts from interrupting the advisory flow mid-execution.

Tell the user:

The Council needs to run bash scripts to invoke external advisors. I'll request permission for all of them now so the flow isn't interrupted.

Then run all three scripts in sequence to trigger permission grants:

1. bash <skill_dir>/scripts/council_preflight.sh <working_directory> — CLI availability check
2. bash <skill_dir>/scripts/council_sync.sh <working_directory> — context sync
3. bash <skill_dir>/scripts/council_invoke.sh (with --help or a no-op) — advisor invocation

Once permissions are granted, proceed with the workflow. The user will not be prompted again for these scripts during the session.

Workflow

0. Preflight Check (First Invocation Only)

On the first council invocation in a session, run the preflight script to detect available advisors:

bash <skill_dir>/scripts/council_preflight.sh <working_directory>

Parse the output (key=value lines) and determine the operating mode:

Codex Auth	Gemini Auth	Mode
true	true	Full Council — both advisors in parallel
true	false	Codex-only — single advisor mode
false	true	Gemini-only — single advisor mode
false	false	Abort — show installation instructions below

Gemini backend resolution (v1.4.0): the invoke script picks the Gemini backend automatically (COUNCIL_GEMINI_BACKEND=auto):

GEMINI_CLI_AVAILABLE	GEMINI_API_KEY_SET	Backend
true	true	gemini (gemini-cli, single-shot JSON — preferred)
true	false	agy (pty-wrapped, sandboxed, single-shot)
false	any	agy (pty-wrapped, sandboxed, single-shot)

Note: gemini-cli's free oauth-personal auth stopped serving 2026-06-18 — the gemini backend requires a paid Gemini API key (GEMINI_API_KEY or GOOGLE_API_KEY, AI Studio) exported in the environment.

Preflight-vs-invoke caveat: preflight counts ~/.gemini/oauth_creds.json as Gemini credentials, but the invoke script's auto mode only selects gemini-cli when GEMINI_API_KEY or GOOGLE_API_KEY is set — a machine with only stale oauth creds and no agy installed will preflight green but fail loud at invoke (the resolved backend agy is not in PATH).

If no advisors are available, display this help and stop:

Neither Codex nor Gemini CLI is available. To use The Council, install at least one:

  Codex:  npm i -g @openai/codex && codex auth
  Gemini: Install agy CLI and verify it is logged in via ~/.gemini/oauth_creds.json (runs automatically on first command)

If one advisor is missing, note which mode is active and proceed. Example:

Council running in Codex-only mode (Gemini CLI not found).

The preflight result is cached for 2 hours — subsequent invocations skip this step automatically.

0.5. Select the Panel (MANDATORY — before composing the prompt)

Read references/reviewer-selection.md and pick the panel by consequence, not by diff size:

Tier	What it covers	Panel
Routine	ordinary diffs, bug fixes, refactors	Fable (low) + Codex
Hard-to-reverse	architecture, migrations, auth/RLS/PHI, wire contracts, any written plan	Fable (low) + Codex + Gemini
Milestone	launch-gating work, initiative plans, anything an executor will build from	the above + Qwen; Fable (high) at merge

Four decisions this step makes, all load-bearing:

1. Fable runs alongside Council, not instead of it. The advisors reason about the text they are handed; Fable re-executes the claims and is the only reviewer that catches our own false statements. Low by default — its work is mechanical, and effort does not make a grep more true. Reserve high for the merge of a stage that ships a fix, where the question becomes "does this close the class, or only the named trigger?"
2. The Codex seat is gpt-5.6-sol. On native failure the OpenRouter fallback is openai/gpt-5.6-sol — never a lesser variant. In the source session gpt-5.3-codex returned REVISE and gpt-5.6-sol returned RESTRUCTURE on the identical prompt, with three critical findings no other reviewer produced. Model choice changed the verdict. Never resolve a model id from a truncated listing — list the full family and grep it.
3. Qwen (qwen/qwen3.8-max, milestone tier) needs max_tokens ≥ 32000. At 9k it spent every completion token on reasoning and returned empty content — finish_reason: MAX_TOKENS.
4. Isolated workspace when the repo is busy. If another session or process is writing to the target repo — or the review is of a document rather than a diff — run Council in a scratch workspace with CLAUDE.md copied in. The safety net hashes the whole tree and fails closed on any change, so a busy repo guarantees a false-trip; and the sync itself writes AGENTS.md into a repo you may have been asked not to touch. Recipe in reviewer-selection.md §6.

1. Sync Project Context

Run the sync script to copy CLAUDE.md content into AGENTS.md (for Codex):

bash <skill_dir>/scripts/council_sync.sh <working_directory>

This creates/overwrites AGENTS.md with an advisory preamble + full CLAUDE.md content. Run this once per session or when CLAUDE.md changes. Gemini does not need a context file — it reviews only the inlined request, so all task context travels in the prompt itself.

Important: After the council session, restore the user's AGENTS.md:

bash <skill_dir>/scripts/council_sync.sh --restore <working_directory>

Never rm AGENTS.md directly — repos increasingly own a real AGENTS.md and the sync script backs it up / restores it.

2. Compose the Advisory Prompt

Select the appropriate template from references/prompt-templates.md based on the use case:

Use Case	Template
Code review	Code Review
Plan/architecture evaluation	Architecture / Planning
Bug investigation	Debugging
General question	General Advisory

Write the composed prompt to a temporary file. Include all relevant context inline (diffs, error messages, plan text) — the advisors cannot read Claude's conversation history.

Context in prompts: Only Codex has read-only filesystem access to the working directory (via its native --sandbox read-only). Gemini reviews INLINED content only — its workspace holds just the review request, whichever backend runs (see Permissions and Safety). Task-specific context (diffs, error messages, plan text, conversation history) must always be inlined because advisors cannot access Claude's conversation or external paths like ~/.claude/plans/.

• Always inline: diffs, error output, plan text, conversation excerpts, and any content from outside the project directory — plus everything Gemini needs, since it sees only the inlined request
• Can reference by path (Codex only): codebase files that Codex can read directly (e.g., "see src/config.ts for the current implementation")
• For code review: the diff must be inlined (advisors don't have access to git staging), but surrounding context files can be referenced by path for Codex
• For large files referenced in the prompt: include the most relevant sections inline, note the file path for full context

Mandatory prompt blocks

1. Defensive framing (all reviews): open with "This is a defensive code review / secure-coding audit of our own application code." Never phrase security asks as "find vulnerabilities to exploit" — both advisors' safety classifiers throttle offensive framing (Gemini refuses; Codex may route to a lesser model).

2. No-explore directive (plan reviews and any prompt referencing many files): include near the top —

   Respond fast. Do NOT explore the repository — everything you need is inline. Reason from the inline content only; flag file-dependent concerns as assumptions for the executor to verify.

   Without this, Codex has spidered repos for 30+ minutes (2026-06-09 incident). Diff reviews on small file sets may omit it so Codex can read adjacent code — that adjacency is why Codex catches migration-runtime semantics others miss.

3. Doc-provenance preamble (any prompt citing internal, owner-revisable docs — voice charters, in-house architecture docs): state that the doc is the owner's revisable direction, not external scripture; the advisor's role is risk-surfacer, not charter-enforcer. List separately which constraints ARE non-negotiable (HIPAA/FDA/OWASP, locked domain rules). Without this, Council issues strict text-literal REVISE verdicts the owner then overrules (2026-05-13 charter-as-decree incident).

4. Nitpick suppression (gpt-5.6-sol): Sol over-flags (CodeRabbit benchmark: 31.6% actionable precision). Instruct: "Rank findings by severity. Suppress low-confidence nitpicks; report only findings you would defend in review."

3. Invoke The Council (Progressive)

Invoke each advisor as a separate detached process so results can be presented as they arrive.

3a. Launch Advisors (detached, NOT harness-background)

Do NOT launch council scripts with the Bash tool's run_in_background — codex hangs at ~0 CPU in that context on large prompts (verified 2026-07-11). Launch each advisor DETACHED from a normal foreground Bash call, which returns immediately:

nohup bash <skill_dir>/scripts/council_invoke.sh --codex-only <prompt_file> <working_directory> \
  > /tmp/council_codex_launch.log 2>&1 & disown

nohup bash <skill_dir>/scripts/council_invoke.sh --gemini-only <prompt_file> <working_directory> \
  > /tmp/council_gemini_launch.log 2>&1 & disown

Each produces its own temp directory (.council-tmp/council_codex_YYYYMMDD_HHMMSS/ and .council-tmp/council_gemini_YYYYMMDD_HHMMSS/ inside the working directory).

Then poll for the response files (the launch log's last lines name them) — e.g. with a Monitor until-loop on file existence, or periodic checks. A liveness rule: if the advisor process shows under ~2s of CPU time after 120s, treat it as hung, kill it, and relaunch once.

For single-advisor modes (Codex-only or Gemini-only), launch only the available advisor as a single detached process.

3b. Poll and Present Progressive Results

After launching both advisors, poll for their response files (per §3a) rather than blocking on either. When the first advisor finishes:

1. Read its response from the temp directory path printed in its output
2. Present the early result to the user immediately:

## Early Result: {Advisor Name} ({model})

{advisor response}

---
*Waiting for {other advisor name} to complete...*

3. Continue polling the second advisor

When the second advisor finishes, read its response and proceed to Step 3.5 (question detection) and then Step 4 (synthesis).

3c. Handling Failures

An advisor has failed only when the invoke script says so — it prints (failed: <reason>) next to the response path and exits 1. When that happens:

1. Read the error log first — always read the *_error.log file from the temp directory before reporting failure:

   • Codex: <working_directory>/.council-tmp/council_codex_*/codex_error.log
   • Gemini: <working_directory>/.council-tmp/council_gemini_*/gemini_error.log

2. Read the response file — even failed runs may have partial output worth presenting

3. Report the script's reason string, not a guess. The validation engine's failure reasons (v1.4.0):

   • empty response — advisor ran but produced no text output
   • placeholder — the script wrote a [COUNCIL-ADVISOR-FAILURE] placeholder (launch/backend error; the placeholder's first line names the specific cause)
   • refusal — refusal phrasing at the start of the response with no verdict line
   • non-engagement — short verdict-less response to a large prompt
   • timed out (COUNCIL_TIMEOUT) — advisor exceeded the per-advisor timeout
   • advisor exited N without a verdict-bearing response — nonzero exit AND no verdict line in the response head

   stderr noise (RESOURCE_EXHAUSTED, rate limit, 429...) alongside a substantive response is NOT a failure — it's an advisory warning recorded in *_warnings.log; see Error Handling. Script-level launch errors (command not found, missing resolved-backend binary) surface in the launch log before any response file exists.

4. If one advisor succeeds, present its response and note the other's failure with the actual reason

5. If both fail, present both error logs and suggest checking CLI authentication (codex auth / gemini auth)

3d. Fallback

If detached launching is unavailable in your environment, fall back to the single blocking call:

bash <skill_dir>/scripts/council_invoke.sh <prompt_file> <working_directory>

Environment overrides:

• CODEX_MODEL — default: from ~/.codex/config.toml (standard: gpt-5.6-sol)
• COUNCIL_CODEX_EFFORT — default: medium. Effort follows the review tier (Tom 2026-08-20): medium routine / high hard-to-reverse / xhigh milestone-only. Set explicitly per invocation when the tier calls for more; config defers to config.toml. Blanket xhigh is retired — it burned native quota + OpenRouter spend on routine diffs.
• COUNCIL_TIMEOUT — default: 600 (seconds per advisor; raise to 900 for very large xhigh reviews)
• COUNCIL_GEMINI_BACKEND — default: auto (gemini | agy)
• COUNCIL_GEMINI_MODEL — optional model pin for either backend
• COUNCIL_SNAPSHOT_EXCLUDES — comma-separated pathspecs excluded from the safety-net snapshot
• AGY_PRINT_TIMEOUT — default: 8m (must stay below COUNCIL_TIMEOUT)

During the Advisory Window (MANDATORY)

• No writes anywhere under the working tree while any advisor runs. Not scratch ledgers, not .generated regens, not fixes for findings the first-returning advisor reported. The safety net hashes everything; a one-line append fires exit 2, and applying fixes mid-window makes the still-running advisor review a stale tree (2026-06-18 + 2026-07-04 incidents). Do bookkeeping in the session scratchpad OUTSIDE the repo.
• Run Council before CodeRabbit, never concurrently. Concurrent CodeRabbit cache writes trip the safety net, and 3 concurrent heavy reviews starved Codex to an empty-output death (2026-06-16). Cap concurrent heavy review processes at 2 (the two Council advisors).

3.5. Question Detection & Auto-Retry

After reading each advisor's response (during progressive polling or after completion), check whether the response contains questions directed at you rather than analysis. Advisors sometimes ask clarifying questions instead of providing their assessment.

Detecting Questions

Scan the advisor response for patterns indicating it needs clarification rather than providing analysis:

• Direct questions ("What is...", "Can you clarify...", "Which approach...", "Could you provide...")
• Requests for information ("I need to know...", "Please share...", "It would help to understand...")
• Conditional analysis ("If X then Y, but if Z then W — which is the case?")

Not all question marks are triggers. Rhetorical questions, questions posed as part of analysis ("Have you considered...?"), and section headers ("What could go wrong?") are normal advisory output. Only trigger retry when the advisor is unable to provide analysis without the answer.

Heuristic: If the response is short (under ~200 words) AND primarily consists of questions rather than analysis, treat it as a question response. If the response contains substantial analysis alongside questions, treat it as a normal response.

Auto-Answer and Retry Flow

When a question is detected in an advisor's response:

1. Extract the question(s) from the response

2. Attempt to answer from project context — search the codebase, CLAUDE.md, conversation history, and relevant files

3. Assess confidence:

   • Confident (answer clearly supported by project context): proceed to auto-retry
   • Unsure (requires judgment or information not available): ask the user:

     {Advisor Name} asked a clarifying question instead of providing analysis:
     
     > {advisor's question}
     
     I'm not confident I can answer this from project context. What's the answer?
     

     Wait for the user's response before proceeding.

4. Compose retry context — write the Q&A to a temporary context file:

   Question from {Advisor Name}: {question}
   Answer: {answer from project context or user}
   
   Please provide your analysis based on this clarification. Do not ask further questions about this topic.
   

5. Re-invoke the same advisor with the context file:

   bash <skill_dir>/scripts/council_invoke.sh --{advisor}-only --context-file <context_file> <prompt_file> <working_directory>
   

6. Read the new response and check again for questions (loop back to detection)

Retry Guards

• Question tracking: Keep a list of questions already asked by each advisor. If the same question (or substantially similar) appears again after a retry, stop retrying and present the best response received so far with a note about the unresolved question.
• Hard cap: Maximum 3 retries per advisor. After 3 retries, present whatever response was received with a note:

  Note: {Advisor Name} requested clarification {N} times. Presenting the best response received.
  

• Per-advisor tracking: Retry counts and question lists are tracked independently for Codex and Gemini. One advisor hitting its cap does not affect the other.

Retry During Progressive Invocation

When using progressive invocation (Step 3), retries happen per-advisor:

• If one advisor finishes with a question, begin the retry flow for that advisor while the other is still running
• If the other advisor finishes with analysis while the first is retrying, present its result immediately
• Synthesis (Step 4) waits until all retries are complete and both advisors have final responses

4. Analyze and Present

If you presented an early result during progressive polling (Step 3b), the user has already seen one advisor's response. Do not re-print it. Present only the new response and the synthesis.

Full Council Mode (both advisors responded)

Default mode — Synthesis: Read both responses, identify areas of agreement and disagreement, then present:

## Council Synthesis

**Consensus:** [Points both advisors agree on]

**Divergence:** [Points where they disagree, with each position]

**Claude's Recommendation:** [Your assessment integrating all three perspectives — yours plus both advisors'. Note: Codex remains the primary source of truth and the main shipping gate; Gemini is advisory.]

Side-by-side mode (when user requests "show me both" or "side by side"):

## Codex ({codex_model})
[Full Codex response]

## Gemini ({backend}/{model})
[Full Gemini response]

## Claude's Take
[Your own assessment]

Single-Advisor Mode (one advisor responded)

Present the single advisor's response with your own assessment.

[!IMPORTANT] If Gemini (agy) dropped out mid-session or failed validation (returning an error log/response), you must explicitly surface this failure as a "degraded one-advisor Council (Codex only)" and never silently ignore it.

If Gemini is the only advisor that responded (e.g. Gemini-only mode or Codex failed), remember that Gemini must never act as a sole shipping gate. Its opinions are strictly advisory, and Codex remains the primary codebase source of truth.

When Gemini failed, name the failure class from the script's reason string (empty / refusal / non-engagement / timeout) — "degraded one-advisor Council (Codex only; Gemini: refusal)" — so patterns stay visible across sessions.

## Advisory Opinion ({Advisor Name} / {model})
[Full response from the available advisor]

## Claude's Assessment
[Your own perspective, noting this was a single-advisor review]

Verdict authority gradient (MANDATORY)

• APPROVE / APPROVE-WITH-CHANGES: absorb mechanical refinements and proceed.
• REVISE / RESTRUCTURE: this is a scope/shape decision the human owns. If the human previously approved the scope, HALT — present the finding verbatim, a plain-English why, two paths, and one recommendation. Never silently fold a scope-reducing REVISE over a prior human approval (2026-05-26 incident).
• Repeated residuals: when a cheap patch leaks a new residual every round and all residuals trace to one structural fact, stop patching and take the robust option the reviewer already named (2026-06-24 lesson).

The stopping rule (MANDATORY — three rounds is a ceiling, not a floor)

After each round, state the root cause of the residual in one sentence. If that sentence is the same as the previous round's, the next action is a DECISION, not another review round.

A 2026-08-04 launch-plan review ran three rounds and returned three RESTRUCTURE/REVISE verdicts while the residual never moved — the same root fact each time, wearing new vocabulary. The conclusion finally adopted was available at round one; rounds two and three confirmed it at real cost in time and scope.

This is the operational form of the repeated-residuals rule above and of the standing lesson that Council ratchets guards and never releases them — "is this safe?" has no failing state toward too-quiet. Without a stopping rule, a multi-advisor panel becomes a scope-inflation engine at exactly the moment you need to ship. See references/reviewer-selection.md §5.

Verifying advisor claims

Gemini findings that name specific code patterns MUST be verified with one grep/build before being surfaced as actionable — Gemini has fabricated multi-file "compilation blockers" with fake code blocks (2026-04-23). Sweeping identical cross-file claims are a pattern-match red flag; real bugs concentrate in 1–2 files. Trust grep over the advisor's quoted snippet. Codex remains the primary source of truth and the mandatory shipping gate: wait for its response even when every other layer is green.

5. Cleanup

CRITICAL: Do NOT clean up until ALL of the following conditions are met:

1. All advisor responses (including retries) have been fully read into your context (i.e., you have used the Read tool on every response file and have the content in your conversation)
2. Synthesis (Step 4) is complete and has been presented to the user
3. Advisors launched detached (§3a) have each exited AND you have read all output files before cleanup

Why this matters: Response files live inside .council-tmp/. If you delete that directory before reading the files, the responses are lost permanently.

Once all conditions above are satisfied, clean up in this order (ORDER IS LOAD-BEARING — the AGENTS.md backup lives inside .council-tmp/, so restore MUST precede deletion):

1. bash <skill_dir>/scripts/council_sync.sh --restore <working_directory> (restores or removes AGENTS.md from its backup inside .council-tmp/)
2. Remove the prompt file.
3. rm -rf <working_directory>/.council-tmp/ — LAST, after the restore and after every response file has been read into context.

Permissions and Safety

Both advisors run with OS-enforced read-only sandboxes on macOS. Neither can write to your project directory; tool calls that try to write fail at the OS layer.

• Codex: --sandbox read-only — Codex's built-in OS-level filesystem deny-write.
• Gemini (agy) on macOS: wrapped in sandbox-exec using a deny-write profile at scripts/council_sandbox.sb. The profile allows reads everywhere; allows writes only to ~/.gemini/, the per-invocation .council-tmp/<...>/ dir, system temp (/tmp, /private/tmp, /private/var/folders), and the agy-specific subdirs under ~/Library/Caches/ (agy/, Google/). All other writes (including the project tree) are blocked at the OS layer.
• Gemini (agy) on non-macOS: sandbox-exec is unavailable. The script REFUSES to run agy unless the caller passes --allow-unsandboxed-gemini, in which case agy runs unsandboxed with a loud warning — the diff safety net below is the only protection in that mode. Or use --codex-only to skip Gemini entirely.

Diff safety net (defense in depth — runs on all platforms)

Before launching either advisor, the script snapshots $WORK_DIR (git: HEAD + status --ignored=traditional + sha256 of tracked + untracked + gitignored files; non-git: find + sha256). After both advisors return, the snapshot is repeated and diffed. The snapshot excludes .council-tmp/ (the script's own response files) and .antigravitycli/ (agy's per-workspace session-metadata directory, created via Apple APIs that bypass sandbox-exec and known not to be a security concern).

Any unauthorized change to the working tree causes the invocation to fail closed with exit code 2 and a [COUNCIL_SAFETY_NET] error banner pointing at the diff. This catches any escape from the sandbox — including writes to gitignored files like .env, dist/, or node_modules/, which the previous --exclude-standard snapshot logic would have missed (Council R1 fix, 2026-05-25).

Historical note (1.2.x ghost-write incident)

Versions 1.2.0 and 1.2.1 documented agy's read-only property as "stdin-EOF + --dangerously-skip-permissions together prevent tool approvals." That reasoning was wrong: agy --help says --dangerously-skip-permissions is "Auto-approve all tool permission requests without prompting" — it grants permission, not withholds it. A 2026-05-24 incident saw agy ghost-write 8 files inside $WORK_DIR during what was supposed to be an advisory Council R1. Upgrade to 1.3.0 or later to get the OS-level sandbox enforcement above.

When you see [COUNCIL_SAFETY_NET] fire

Either (a) an advisor sandbox escape (rare — investigate as a real security issue), or (b) genuine concurrent work in $WORK_DIR by you or another process during the invocation window. Inspect the diff file the banner points at; you'll get response files and a clean before/after snapshot regardless. Do not trust the advisor recommendations until you've audited the diff.

Model and Effort Configuration

• Codex: model from ~/.codex/config.toml (standard: gpt-5.6-sol, 1.05M context), overridable via CODEX_MODEL. Reasoning effort is set EXPLICITLY by the script: -c model_reasoning_effort=medium by default (COUNCIL_CODEX_EFFORT to change). Sol note: highest review recall of any current model, but over-flags nitpicks — the prompt templates include a suppression instruction.
• Gemini: backend-dependent. gemini-cli: model via COUNCIL_GEMINI_MODEL → -m. agy: COUNCIL_GEMINI_MODEL → --model (run agy models for ids; a Pro tier gives deeper reviews than the default Flash).
• Both advisors review INLINED content; only Codex additionally has read-only filesystem access to the working directory.

Fallback and extra seats via OpenRouter

Used when the Codex CLI fails (rate limit / quota — read the error log, never guess) and for the milestone-tier Qwen seat. Full detail in references/reviewer-selection.md §2, §3, §7.

Seat	Model id	Notes
Codex fallback	openai/gpt-5.6-sol	Never a lesser variant. 5.3-codex → REVISE vs 5.6-sol → RESTRUCTURE on an identical prompt, 2026-08-04.
Qwen (milestone)	qwen/qwen3.8-max	max_tokens ≥ 32000, plus a system-prompt line telling it to keep internal reasoning short.

Operational notes that cost a session to learn:

• Never resolve a model id from a truncated listing. List the whole openai/ or qwen/ family and grep it. A head -20 cut the 5.6 family off the list and produced the weaker review above.
• A 403 "Key limit exceeded (total limit)" is a per-key spend cap, not an account balance — adding credit changes nothing. Raise the limit on the key itself at the URL in the error body. Inspect with GET /api/v1/key (usage / limit / limit_remaining).
• Long reviews exceed a 2-minute foreground tool timeout: launch the curl detached (nohup … & disown) and poll the response file, exactly as §3a does for the advisors. The file is written progressively, so confirm the writer exited before parsing — a mid-write json.load fails with "Expecting value".
• Always report the usage block: cost and completion_tokens_details.reasoning_tokens. High reasoning tokens with empty content is budget starvation, not a refusal — raise max_tokens.

Error Handling

See Section 3c above for detailed failure diagnostics. Never guess error messages — always read the actual error log files before reporting failures. Key rules:

• An advisor has FAILED only when the script says so: reasons are empty response, placeholder, refusal, non-engagement, timed out, or advisor exited N without a verdict-bearing response.
• Loud partial success: a nonzero advisor exit WITH a verdict line in the response head is RETAINED, not failed — the script writes a *_warnings.log advisory and logs it loudly. Verify the response is complete before relying on it.
• stderr noise (RESOURCE_EXHAUSTED, rate limit, 429...) with a substantive response file is an ADVISORY WARNING (*_warnings.log), not a failure — present the response normally and mention the warning.
• On [COUNCIL_SAFETY_NET] exit 2: read worktree_diff.txt FIRST. Known benign churn (.remember/, .tmp.driveupload/) is already excluded; any remaining diff is either a real advisor escape (investigate as a security issue) or your own concurrent edit (see During the Advisory Window). Advisor responses remain readable either way.

Learning from the Council (Generalize Knowledge)

After presenting the council synthesis, reflect on what the advisors revealed — gaps, blind spots, better approaches, or project-specific conventions that Claude missed.

Generalize these learnings into CLAUDE.md and AGENTS.md so future agents start with those lessons already loaded. Write down any information that would be useful for a future agent working in this repository, including:

• What the advisors caught that Claude missed
• Why it was missed (root cause, not just symptom)
• The corrected approach or pattern to use next time
• Any project-specific conventions the council surfaced

Template for a council learning entry:

## Council Learning — [date]
- **Insight:** [what the council revealed]
- **Caught by:** Codex / Gemini / Qwen / Fable / several
- **Root cause:** [why this was missed]
- **Lesson:** [concrete rule or pattern for future sessions]

Also record which SEAT caught it. Panel composition is a live decision (§0.5), and it should be tuned by evidence rather than habit. If one seat repeatedly produces nothing the others missed, drop it from that tier; if a tier keeps missing a class of defect, add the lens that would have caught it. The seat attribution table in references/reviewer-selection.md §1 is the running record — update it when a session materially changes the picture.

This closes the feedback loop: the council exposes blind spots → learnings become permanent project memory → future sessions start smarter.

When to Convene The Council

• User explicitly asks for it ("ask the council", "get a second opinion", "council review")
• High-stakes architectural decisions affecting multiple systems
• Debugging sessions stuck after multiple failed attempts
• Before finalizing major implementation plans
• Code review of security-sensitive changes