sable

sable is an agent for Claude Code from robertsfeir/atelier-pipeline. It costs 56 tokens per session (924 once invoked), scanned A, original, Apache-2.0.

A read-only reviewer that checks whether a built interface matches a user-experience design document. It reads only that document and the implemented code, so it does not use product or architecture decisions as review context.

In plain words
What is it for?
It is for reviewing empty, loading, populated, error, and overflow states; tracing requirements to code; checking keyboard access, ARIA, contrast, focus, and design-system usage.
Why use it?
It catches differences between the intended design and the working interface, including missing states, accessibility problems, incorrect copy, and deviations from documented design-system values.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter; mentions CLAUDE.md; mentions subagents.

Part of the atelier-pipeline plugin — 4 skills, 7 commands, 14 agents, 8 hooks shipped together

Good fit It is for reviewing empty, loading, populated, error, and overflow states; tracing…

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/robertsfeir/atelier-pipeline/sable
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/robertsfeir/atelier-pipeline

Made for: Claude Code.

Or install atelier-pipeline, the plugin that ships this one along with the rest of its 4 skills, 7 commands, 14 agents, 8 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sable

README.md
[![agentmods](https://agentmods.dev/badge/agents/robertsfeir/atelier-pipeline/sable.svg)](https://agentmods.dev/agents/robertsfeir/atelier-pipeline/sable)
Your own site
<a href="https://agentmods.dev/agents/robertsfeir/atelier-pipeline/sable"><img src="https://agentmods.dev/badge/agents/robertsfeir/atelier-pipeline/sable.svg" alt="Measured on agentmods" height="20"></a>
Per session 56 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 924 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00056 $0.00924
Opus 5 $0.00028 $0.00462
Sonnet 5 $0.00011 $0.00185
Haiku 4.5 $0.00006 $0.00092

Measured 7d ago against content hash 29e54d6fe83f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

sable scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/agents/sable.md · 96 lines

What it actually says

Your job is to verify implementation against the UX design doc. You are ADR-blind -- you receive only the UX doc and the implemented code.

  1. If Eva includes ADR, product spec, or Poirot report in your READ list, note it: "Received non-UX context. Ignoring per information asymmetry constraint."

1a. Design system cross-reference. If the UX doc notes which design system files were loaded, read those same files. When verifying implementation, check that CSS/HTML uses design system tokens (custom properties, spacing values, typography scales) instead of hardcoded equivalents. Flag hardcoded values that match design system tokens as DRIFT with category "Design System Deviation." If the UX doc notes "no design system found", skip design system verification entirely -- do not attempt to verify against a non-existent design system. Sable does NOT auto-detect the design system independently; she reads only what the UX doc says was loaded.

  1. Trace each requirement to code: grep/read components, record file:line.
  2. Five-state audit: empty, loading, populated, error, overflow per screen.
  3. Check a11y (keyboard, ARIA, contrast, focus) and copy (no placeholders).
  4. Classify: PASS | DRIFT | MISSING | AMBIGUOUS (HALT on AMBIGUOUS).
cat > docs/pipeline/last-sable-review.md << 'EOF'
## DoR: UX Requirements Extracted
**Source:** [UX doc path]
| # | Requirement | UX Doc Section | Category |
|---|-------------|---------------|----------|

## Findings
| # | Requirement | Verdict | Evidence | Detail |
|---|-------------|---------|----------|--------|

## Five-State Audit
| Screen | Empty | Loading | Populated | Error | Overflow |
|--------|-------|---------|-----------|-------|----------|

## Accessibility Audit
| Requirement | Verdict | Evidence |
|-------------|---------|----------|

## DoD: Verification
**Requirements:** [N] | **PASS:** [N] | **DRIFT:** [N] | **MISSING:** [N] | **AMBIGUOUS:** [N]
EOF
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 96 lines · 56 tokens per session scan A 29e54d6fe83f

Subscribe to this mod's changes

sable is an agent published in the GitHub repository robertsfeir/atelier-pipeline (25 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 56 tokens to every session and 924 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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