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google/egm-review-loop

google

egm-review-loop

Executes the Antagonistic-Review process from the Elephant-Goldfish Model (EGM) via an automated multi-agent review loop to audit documents against qualitative standards and structural templates, and automatically apply approved fixes. Use when reviewing design docs, READMEs, feature specifications, implementation plans, or verifying document completeness and tone.

v1.0LATEST
NewUpdated Nov 6, 2026

Goldfish Review: Loop (Orchestration Driver)

When running in Codex or ChatGPT Work, first read Codex integration. In Claude Code or Cowork, read ${CLAUDE_PLUGIN_ROOT}/docs/claude.md first.

Overview

This skill acts as the central orchestration engine driving the multi-agent review loop. It coordinates two distinct agent memory models:

  • The Goldfish (Adversarial Auditors): Subagents spawned in isolated, fresh context windows to catch unstated assumptions without historical bias.
  • The Elephant (Persistent Resolver): The primary agent context holding institutional knowledge to evaluate findings and apply approved repairs.

The driver manages argument intake, resolves paths for reviewers and standards, unconditionally re-parses target line ranges before every iteration, spawns concurrent specialized Goldfish auditors based on configuration, and coordinates with the Elephant context to resolve findings.

Delegation

A Goldfish runs in a fresh context with no conversation history. Spawn each subagent with your harness's subagent tool (Antigravity: invoke_subagent; Claude Code: Agent; Codex: spawn_agent). Each subagent is defined in agents/<file>.md, and its frontmatter name (for example egm-zoom-out) is the subagent type to request where your harness registers named subagents. Otherwise spawn a general-purpose subagent and tell it to read that persona file first. Pass the prompt verbatim and wait for the report. If your harness cannot nest subagents, use direct dispatch instead of the synthesizer. See docs/harnesses.md. If your harness has no subagent tool, stop and tell the user: a review in the same context is not a Goldfish review.

Inputs

The caller or user provides exactly these parameters:

  • TargetFile: Absolute or relative path to target document.
  • SemanticTarget: Descriptive targeting string (e.g., "Target the H4 block with SS-ID 'S1.12'"), or full file.
  • Reviewers: List of reviewer names (shortnames or paths).
  • Standards: Mapping of reviewer names to standard names (shortnames or paths).
  • GoldfishContext: A reading list (source files, directories, or documentation URLs) fed to reviewers to establish their baseline. An empty list from the caller counts as provided; do not ask for it again. Some reviewers cannot open URLs, so before the first round save the raw page of each URL as a new file in the working directory (or your harness's artifact directory) and pass its absolute path instead. If a page cannot be saved, ask the user for a local copy and end your turn; if no one can answer, as in a headless run, leave it out, tell the user, and keep going.

Path & Standard Resolution Logic

When resolving names in Reviewers and Standards:

  • Reviewer Shortnames: Map reviewer shortname (e.g., design_critic, structural, style, implementation_readiness, codebase_details, comprehension, zoom_out) to agents/{name}.md. The persona file defines the reviewer's core mandates, audit vectors, and output format.
  • Standard Shortnames: Map standard shortname (e.g., feature-spec-standard, implementation-readiness-standard, zoom-out-standard, heilmeier-standard, re-implementation-standard) to resources/document_standards/{name}.md.
  • Custom Paths: If the name contains a slash (/), treat it as an absolute or workspace-relative path and read it directly.

Execution Workflow

Step 1: Intake & Configuration UX

Evaluate the provided inputs (TargetFile, SemanticTarget, Reviewers, Standards, GoldfishContext).

  1. Identify Missing Inputs: Determine which of the required parameters are missing.
  2. Interactive Onboarding:
    • If all inputs are present, proceed to Step 2.
    • If some or all inputs are missing, interactively prompt the user only for the missing inputs, one at a time via chat messages.
  3. Reviewer Recommendations:
    • Feature Specs: Recommend design_critic (mapped to resources/document_standards/feature-spec-standard.md) and structural (mapped to resources/document_standards/feature-spec-standard.md).
    • Implementation Plans: Recommend implementation_readiness (mapped to resources/document_standards/implementation-readiness-standard.md) and codebase_details.
  4. Confirm Configuration: Display the consolidated plan (Target, Reviewers, and mapped Standards) and ask the user to confirm before proceeding.

Step 2: The Sharpening Loop (Iterative Cycle)

Execute the following sequence in a continuous loop:

2.1 Unconditional Target Resolution

Before every iteration, unconditionally re-scan TargetFile by reading it and using the stable SemanticTarget string (e.g., locating the target header) to dynamically determine the updated absolute start and end line numbers. This ensures absolute accuracy even if the file was edited in prior rounds. (If full file mode is specified, confirm full-file line bounds).

2.2 Review Swarm Execution

  1. Launch Subagent Swarm: Spawn subagents to execute the review:
    • Hierarchical Dispatch (Synthesizer): Spawn the intermediate synthesizer subagent (agents/synthesizer.md / egm-synthesizer). The synthesizer spawns the Goldfish review swarm in parallel, deduplicates findings, writes the report artifact, and returns a single summary message to avoid context pollution in the root conversation. Pass it the Failed Reviewers rule below and GoldfishContext, and tell it to give those files to each reviewer. Its summary must give a status, completed or not run, for each requested reviewer.
    • Direct Dispatch (Flat Swarm): Alternatively, spawn each requested reviewer subagent in Reviewers directly. Instruct each subagent to first read its persona definition in agents/{name}.md, then audit TargetFile at the resolved line range against its designated standard in resources/document_standards/, supplying GoldfishContext.
    • Each reviewer produces findings with severity (🔴 Blocker, 🟡 Major, 🟢 Nit), line numbers, discrepancy descriptions, and rationales.
  2. Consolidate Findings: Collect all findings across reviewers into a single flat FindingsList. Give each finding a stable id (<reviewer>-<round>-<n>) and record its reviewer, severity, and affected scope.
  3. Failed Reviewers: A reviewer that times out, fails, or returns no report did not review. Retry it once. If it fails again, record it as not run in the report. Never count it as a reviewer with zero findings. If the synthesizer summary has no status for a requested reviewer, record that reviewer as not run.

2.3 Aggregated Resolution Hand-off

  1. Pass TargetFile, the active line range, and the aggregated FindingsList to the egm-resolve workflow.
  2. Execute the resolution workflow in the primary Elephant context:
    • Categorize findings into CONTEST vs. PROPOSE FIX.
    • Save goldfish_review_report.md with your file-writing tool.
    • Present the interactive decision gate (Auto accept, Continue, Interactive breakdown).
    • Apply approved text repairs to TargetFile using your file-editing tool.

2.4 Iteration Check & Turn Boundary

Fresh reviewers sample differently each round, so a round with zero findings is rare even when the document improves. Use these rules instead:

  • Settled findings: A finding is settled when it is contested or recorded without a fix (accepted risk). Keep the settled list across rounds. If a new reviewer raises a settled finding again (same affected scope, same issue), do not re-open it.
  • Fixed findings: An applied fix does not settle a finding. If a later reviewer raises the same issue at the same scope, the fix failed or a later edit reintroduced the issue. Re-open the finding.
  • Clean round: A round is clean when no reviewer raises a Blocker or Major finding that is not settled. Nits do not block. A reviewer recorded as not run makes the round not clean. Decide this from the review results, before you apply the fixes of that round.
  • Converged: Two consecutive clean rounds. One clean round is not enough, because the next fresh reviewer can find a different gap in the same text.
  • Cap: 5 rounds.
  • Churn: A new finding is at the scope of an applied fix, and reverting that fix would resolve it.

On converged, go to Step 3. On cap or churn, write a short list of the open findings by severity, then ask the user one question: accept and proceed, continue past the cap, or return the document to drafting.

Crucial Turn-Taking Requirement: After the resolution phase finishes for a given round, the loop driver MUST respect the turn-taking checkpoint in egm-resolve. The driver must remain idle across human turns, only looping back to Step 2.1 when the user explicitly confirms they wish to run another round of review.

Step 3: Output Boundary & Final Checkpoint

Upon completion (converged, cap or churn accepted by the user, or manual halt):

  • Programmatic Callers: If running as a subflow of egm-review, exit cleanly to hand execution back to the parent workflow.
  • Manual Invocations: Output a summary of completion in chat: "The review loop has completed after [N] rounds ([converged | accepted at cap | halted]). Open findings are in the report. Would you like to proceed to the next stage, or do you have any final questions?"
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Overall Score

86/100

Grade

A

Excellent

Grades are signals, not a certification. Always review a skill yourself before use.

Safety

88

Quality

87

Clarity

84

Completeness

82

Summary

This skill orchestrates a multi-agent review loop (the "Elephant-Goldfish Model") to audit documents against standards. It spawns isolated reviewer subagents, collects findings, and coordinates resolution with a persistent context. The skill is a pure orchestration driver—it reads documents, invokes subagents, and manages state across iterations; it does not execute destructive operations, access secrets, or perform unsafe network operations.

Detected Capabilities

read target document and line rangesinvoke subagents with isolated contextmanage multi-turn orchestration stateparse and consolidate findings from multiple reviewerswrite findings report to fileedit target document with approved fixeshand execution back to parent workflows

Trigger Keywords

Phrases that agents use to match this skill to user intent.

review design documentmulti-perspective document audititerate document refinementspec review and fixverify document qualityapply findings automatically

Risk Signals

INFO

Subagent spawning with caller-provided inputs (TargetFile, GoldfishContext)

Step 2.2 Review Swarm Execution
INFO

File writes to goldfish_review_report.md and target document editing

Step 2.3 Aggregated Resolution Hand-off
INFO

URL handling in GoldfishContext: saves fetched pages as files before passing to reviewers

Inputs section and test_scenarios.yaml
INFO

Requires subagent tool support; degrades gracefully if unavailable

Delegation section

Referenced Domains

External domains referenced in skill content, detected by static analysis.

redis.iowww.apache.org

Use Cases

  • Review design documents for completeness and structural accuracy
  • Audit feature specifications against standards using multiple perspectives
  • Iteratively refine implementation plans through adversarial feedback
  • Verify README quality across clarity, tone, and technical completeness
  • Apply automated fixes to approved document findings across rounds

Quality Notes

  • Well-structured orchestration workflow with clear step boundaries and turn-taking checkpoints that respect human decision gates
  • Comprehensive path resolution logic for reviewer personas and standards (shortnames vs. custom paths)
  • Detailed iteration control rules (settled findings, fixed findings, clean rounds, convergence) prevent infinite loops and account for fresh sampler variance
  • Strong defensive behavior: missing inputs trigger interactive prompts, failed reviewers are retried once and recorded as not run, missing synthesizer status is detected
  • Excellent test coverage in test_scenarios.yaml covering convergence logic, reviewer status tracking, URL handling, and graceful degradation
  • Explicit turn-taking boundary enforced after resolution phase ensures human control over loop continuation
  • Clear integration points with parent workflows (egm-resolve, egm-synthesizer, egm-review) and documented fallback modes (direct dispatch if synthesizer unavailable)
  • Documentation references external files (agents/*.md, resources/document_standards/*.md) but does not require them to be present—the skill can degrade or ask the user instead
Model: claude-haiku-4-5-20251001Analyzed: Nov 6, 2026

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