phase1-coverage-loop

phase1-coverage-loop is a skill for Claude Code from vibeic/vibe-ic. It costs 150 tokens per session (4,426 once invoked), scanned A, original, Apache-2.0.

An automated coverage check for the first stage of an integrated-circuit design workflow. It runs the stage across several chip examples and checks whether important facts survive into the generated documents.

In plain words
What is it for?
It helps test prompt-to-spec completeness across benchmark chip folders and create general backlog issues for missing information-handling cases.
Why use it?
It reveals recurring extraction gaps, such as lost clock rates, voltages, register addresses, pin names, or opcodes, instead of treating each missing fact as an isolated mistake.

Skill for Claude Code

Written for Claude Code: Claude Code plugin machinery.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 programs/phase1_rotation_state_advance.py build --target <target> --json rot.json.

Part of the vibe-ic plugin — 70 skills, 8 commands, 8 agents, 2 hooks, 1 MCP server shipped together

Good fit It helps test prompt-to-spec completeness across benchmark chip folders and create general backlog issues for missing information-handling cases.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/vibeic/vibe-ic
agentmods
npx agentmods add skills/vibeic/vibe-ic/phase1-coverage-loop

Made for: Claude Code.

Or install vibe-ic, the plugin that ships this one along with the rest of its 70 skills, 8 commands, 8 agents, 2 hooks, 1 MCP server.

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 phase1-coverage-loop

README.md
[![agentmods](https://agentmods.dev/badge/skills/vibeic/vibe-ic/phase1-coverage-loop/github.svg)](https://agentmods.dev/skills/vibeic/vibe-ic/phase1-coverage-loop)
Your own site
<a href="https://agentmods.dev/skills/vibeic/vibe-ic/phase1-coverage-loop"><img src="https://agentmods.dev/badge/skills/vibeic/vibe-ic/phase1-coverage-loop/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for phase1-coverage-loop

Your own site · 80×15
<a href="https://agentmods.dev/skills/vibeic/vibe-ic/phase1-coverage-loop"><img src="https://agentmods.dev/badge/skills/vibeic/vibe-ic/phase1-coverage-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 150 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,426 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 172
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 $0.00150 $0.04426
Opus 5 $0.00075 $0.02213
Sonnet 5 $0.00030 $0.00885
Haiku 4.5 $0.00015 $0.00443

Measured 6d ago against content hash 3993bd159bc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

phase1-coverage-loop 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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (tests/test_compliance.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

vibe-ic-marketplace/plugins/vibe-ic/skills/phase1-coverage-loop/SKILL.md · 396 lines

How it starts

The opening of the file, as written. The whole thing — 396 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Phase 1 Coverage Loop — Closed-Loop Phase 1 Ingester Improvement

Purpose

field-agent-loop covers Phase 1 / 2 / 3 — it drives plugin quality on the existing-design-documents entry path. This sibling skill closes the same loop for the prompt/dialogue entry path (Phase 1).

The loop treats benchmark IC README files as realistic Phase 1 prompts: an experienced user briefing the platform would mention the same facts the README documents (clock rate, supply voltage, register addresses, pin names, opcodes, timing). After running /vibe-ic-phase1 on each IC, the completeness gate harvests chip-AGNOSTIC design tokens from the prompt and verifies each token survived into generated_docs/L*.json, human_docs/L*.md, facts.yaml, or PROVENANCE.md. Missing tokens are systematic ingester gaps — they become backlog issues.

The loop is chip-AGNOSTIC: filed issues describe general ingester gaps (e.g. "NL ingester drops <pattern> register-table rows"), never project-specific bugs. Every YAML passes backlog_sanitize_check before filing.

State

<target>/_field_agent_phase1_state.json

Schema:

{
  "step": 1 | 2 | 3 | 4 | "STOPPED",
  "iter": <int>,
  "started_at": "<YYYY-MM-DD>",
  "target_folder": "<absolute path to benchmark folder>",
  "ic_rotation": ["<ic_name>", "<ic_name>", ...],
  "current_ic_index": <int>,
  "rotation_passes_completed": <int>,
  "last_plugin_version": "<semver>",
  "agent_task_id": "<id or null>",
  "agent_status": "<short status string>",
  "issue_number": <int or null>,
  "tracking_secondary": [<int>, ...],
  "per_ic_last_verdict": {"<ic_name>": "PASS|WARN|FAIL|SKIP", ...},
  "last_summary": "<one paragraph>"
}

ic_rotation construction and advance/wrap are enforced by programs/phase1_rotation_state_advance.py (no longer hand-rolled):

# build the rotation (sorted immediate subdirs with README.md or input/prompt.md)
python3 programs/phase1_rotation_state_advance.py build --target <target> --json rot.json
# advance the index by one; wrap → rotation_passes_completed += 1
python3 programs/phase1_rotation_state_advance.py advance \
    --current-index <i> --count <len> --passes <p> --json adv.json

Read the full file on GitHub · 396 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 6d ago First seen · 396 lines · 150 tokens per session scan A 3993bd159bc5

Subscribe to this mod's changes

phase1-coverage-loop is a skill published in the GitHub repository vibeic/vibe-ic (23 stars, last pushed today), licensed Apache-2.0. It adds 150 tokens to every session and 4,426 once invoked, about $0.0007 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 2026-09-03.

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