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fable-judge

Adversarial verification of finished work. Treats any "done" as a set of claims, then re-runs the claimed verifications, diffs what actually changed, detects weakened tests and false completion claims, and delivers an evidence-based verdict (VERIFIED / VERIFIED WITH CAVEATS / REFUTED). Use after any agent or model claims work is complete - "/fable-judge", "judge this work", "verify what it did", "did that actually work?". Also runs the fable-method trap suite against a skill or model via "/fable-judge suite TARGET".

Quality

93%

Does it follow best practices?

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SecuritybySnyk

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SKILL.md
Quality
Evals
Security

Quality

Content

85%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A tight, high-signal instruction skill: a clearly sequenced verification workflow with explicit checkpoints, concrete commands and paths, and disciplined deferral of detail to external references. The only deductions are minor: a small motivational intro paragraph that could be trimmed and a suite mode whose executor invocation could be more concrete.

Suggestions

Trim the opening motivation paragraph ("The most documented failure of coding agents is claiming success regardless of reality...") to a single sentence stating the stance, since Claude already knows agents overclaim success.

In suite mode, give one concrete example of how to launch the executor subagent against a scenario copy (command or prompt template), so that mode is as copy-paste actionable as the default mode.

DimensionReasoningScore

Conciseness

The body is dense and almost every token is operative (standing rules, fraud definitions, verdict format), but the opening motivation paragraph ("The most documented failure of coding agents is claiming success regardless of reality...") states a failure mode Claude already knows, and occasional rhetorical framing ("guilty until its justification traces to a spec") could be trimmed. It fits the score-4 anchor (efficient, minor instances of over-explanation) better than score 5 (every token earns its place) and far better than score 3.

4 / 5

Actionability

Concrete guidance throughout: specific commands (`git diff`, `git status`, `/fable-judge suite <target>`), exact file paths (`fable-method`'s `references/failure-modes.md`, `references/domains/`, `eval/workflow.js`, `eval/README.md`), an ordered fraud checklist, and a prescribed verdict format. It stops short of the score-5 anchor because the suite mode's executor-subagent invocation is not copy-paste ready and "re-run every claimed verification" is necessarily generic; it clearly exceeds the score-3 anchor (pseudocode/incomplete).

4 / 5

Workflow Clarity

The default mode is a clear 5-step sequence with explicit validation checkpoints: diff as ground truth, re-running every claimed verification, UNVERIFIABLE labeling for non-rerunnable claims, evidence-first verdict delivery with a claims table, and read-only standing rules. The suite mode also validates against scenario ground truths. The work is read-only, so the destructive/batch cap does not apply; this matches the score-5 anchor (explicit validation steps, feedback loops, checklists).

5 / 5

Progressive Disclosure

The ~39-line body stays an overview: two clearly headed modes, with the failure-mode catalogue, domain adapters, and eval mechanics correctly deferred to well-signaled one-level-deep references ("The full catalogue is `fable-method`'s `references/failure-modes.md`", `references/domains/`, `eval/`). Both install cases (plugin vs standalone) are addressed, so navigation is unambiguous — the score-5 anchor, not the score-4 anchor with organization gaps.

5 / 5

Total

18

/

20

Passed

Description

100%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

An exemplary description: third-person voice, explicit what and when, concrete actions with named verdict outcomes, and a well-chosen set of quoted natural trigger phrases including the slash command. It is comparable in quality to the reference good examples.

DimensionReasoningScore

Specificity

The description lists multiple concrete actions — "re-runs the claimed verifications, diffs what actually changed, detects weakened tests and false completion claims, and delivers an evidence-based verdict (VERIFIED / VERIFIED WITH CAVEATS / REFUTED)" — plus the suite mode, giving comprehensive coverage of the verification domain. It matches the score-5 anchor (multiple specific concrete actions, comprehensive coverage); no coverage gaps are visible, so it is not the score-4 anchor.

5 / 5

Completeness

It explicitly answers both questions: what ("Adversarial verification of finished work... delivers an evidence-based verdict") and when ("Use after any agent or model claims work is complete") with concrete trigger phrases. This matches the score-5 anchor exactly; the when clause is explicit, not weakly implied, so it is not the score-4 anchor.

5 / 5

Trigger Term Quality

It quotes the natural phrasings users would actually say — "judge this work", "verify what it did", "did that actually work?" — alongside "Use after any agent or model claims work is complete" and the slash command "/fable-judge". Trigger coverage is comprehensive with both question-form and imperative synonyms; file extensions are N/A for this domain, so it fits the score-5 anchor rather than the score-4 anchor (a few natural terms missing).

5 / 5

Distinctiveness Conflict Risk

It carves a clear niche — adversarial verification of completion claims plus the trap-suite mode — with triggers ("judge this work", "did that actually work?") that are distinct from generic code-review or document skills. Conflict risk is minimal, matching the score-5 anchor rather than the score-4 anchor (minor overlap with closely related skills).

5 / 5

Total

20

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

referenced_paths_exist

Referenced path issues: 2 missing

Warning

Total

15

/

16

Passed

Repository

Sahir619/fable-method

Path

skills/fable-judge/SKILL.md

Reviewed

Table of Contents

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