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/dicom-metadata-extract

@2cd3507
by NVIDIA Corporationnvidia/skills3.5k stars
424

Used for extracting selected metadata from one DICOM file and flagging standard-tag PHI presence. Not for anonymization or clinical use.

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Use this Skill: https://skilld.dev/gh/nvidia/skills/dicom-metadata-extract

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BENCHMARK.md

≈1.8k tokens on demand. Your agent reads this file only when SKILL.md points to it.

Skill Benchmark: dicom-metadata-extract

✅ Overall verdict: PASS — Recommended for publication

Publication Recommendation

Recommended for publication based on the completed evaluation evidence in this report.

Evaluation Metadata

  • Skill: dicom-metadata-extract
  • Evaluation date: 2026-09-14
  • Evaluator version: 1.5.6
  • Agents: Claude Code (aws/anthropic/bedrock-claude-opus-4-8), Codex (openai/openai/gpt-5.5)
  • Tasks: 2 evaluation tasks (2 positive)
  • Dataset digest: sha256:1c4acd30852c7efd65d9d439bca3bcb67f590e7024f3e1cdfbbfc3f6660f1771 (skill-evaluator-dataset-snapshot/1)
  • Attempts per task: 3
  • Environment: k8s-sandbox
  • Tier 2 evidence: required for publication
  • Tier 3 evidence: required for publication

Each task attempt ran in its own isolated sandbox pod.

What This Report Answers

The three-tier evaluation checks whether the skill:

  • is safe to use;
  • produces correct answers;
  • is discovered and activated when needed;
  • helps the agent complete the user's goal and expected workflow; and
  • avoids wasted skill and tool usage.

Results at a Glance

Measure Claude Code (Baseline → Skill Uplift) Codex (Baseline → Skill Uplift)
Overall 72.3% — baseline ran, but no comparable score was available; uplift unavailable 77.0% — baseline ran, but no comparable score was available; uplift unavailable
Security 100.0% → 50.0% (-50.0 points) 100.0% → 50.0% (-50.0 points)
Correctness 25.0% → 80.0% (+55.0 points) 15.0% → 100.0% (+85.0 points)
Discoverability 91.5% — baseline ran, but no comparable score was available; uplift unavailable 75.0% — baseline ran, but no comparable score was available; uplift unavailable
Effectiveness 28.3% → 55.0% (+26.7 points) 28.3% → 85.0% (+56.7 points)
Efficiency 84.8% — baseline ran, but no comparable score was available; uplift unavailable 74.8% — baseline ran, but no comparable score was available; uplift unavailable

How to read this table: baseline is the same task attempted without the target skill. Scores are rounded to one decimal; threshold-adjacent values use additional precision so their displayed band matches the verdict. Uplift is derived from those displayed scores and shown in percentage points.

Example: 47.0% → 92.0% (+45.0 points) means the skill-assisted run scored 92.0%, 45.0 percentage points above its 47.0% no-skill baseline.

Token Usage

Actual Tier 3 execution usage is reported for every observed agent/case pair and both conditions.

Agent Dataset case With skill Without skill Delta Change Coverage
claude-code All cases 647,052 605,045 N/A N/A skill 2/2; base 4/4
claude-code extract-modality-and-phi-flag 212,638 482,358 N/A N/A skill 1/1; base 3/3
claude-code no-anonymization-claim 434,414 122,687 +311,727 +254.08% skill 1/1; base 1/1
codex All cases 642,885 382,685 N/A N/A skill 2/2; base 4/4
codex extract-modality-and-phi-flag 391,281 265,946 N/A N/A skill 1/1; base 3/3
codex no-anonymization-claim 251,604 116,739 +134,865 +115.53% skill 1/1; base 1/1
ALL AGENTS Dataset aggregate 1,289,937 987,730 N/A N/A skill 4/4; base 8/8

Prompt tokens include cached reads, so total tokens are prompt + completion (cached is not added twice). The Efficiency score uses (prompt - cached) + completion. N/A means the relevant trajectory counters were not available; coverage is never estimated.

Tier Status

Tier Purpose Status Evidence
Tier 1 Static validation PASSED WITH OBSERVATIONS 11 validator(s); 16 finding(s)
Tier 2 Semantic deduplication PASSED 2 validator(s); 0 finding(s)
Tier 3 Live agent evaluation PASS 2 agent(s); 2 task(s)

Findings and Observations

<details> <summary>Show detailed findings and successful checks</summary>
  • MEDIUM PII/ip_addresses: Public IP address (fixtures/generate_sample.py:33)
  • MEDIUM PII/ip_addresses: Public IP address (fixtures/generate_sample.py:49)
  • MEDIUM PII/ip_addresses: Public IP address (fixtures/generate_sample.py:51)
  • MEDIUM SCHEMA/body_recommended_section: Missing recommended section: '## Examples' (skills/dicom-metadata-extract/SKILL.md)
  • MEDIUM SECURITY/Unknown (SQP-2): The skill reads DICOM files, extracts PHI-containing metadata (e.g., patient name, DOB, MRN — standard DICOM tags), and (SKILL.md:51)
  • 11 additional finding(s) are available in the full evaluation artifacts.
</details>

Scoring Methodology

<details> <summary>Show dimension definitions, source signals, and thresholds</summary>
Dimension Question Scored signals
Security Is it safe to use? security (100%)
Correctness Is the answer correct? accuracy (100%)
Discoverability Was the right skill loaded when needed? skill_execution (100%)
Effectiveness Did the skill help complete the task? goal_accuracy (50%) + behavior_check (50%)
Efficiency Did it avoid wasted tool calls and token usage? skill_efficiency (50%) + token_efficiency (50%)
  • Dimension bands: PASS at 50% or above; NEUTRAL from 40% to below 50%; FAIL below 40%.
  • Overall Tier 3 lift: PASS at +5 points or more; FAIL at -10 points or less; values between those bands are NEUTRAL.
  • Overall verdict: PASS only when every configured dimension passes for at least one supported agent. Lift is reported as diagnostic evidence and does not override this gate.
  • The 50% attempt pass threshold is a separate per-task gate; it is not the dimension pass threshold.
  • Effectiveness is the equal-weight mean of goal completion (goal_accuracy) and expected workflow adherence (behavior_check).
  • Efficiency is 50% tool-call productivity (the backward-compatible skill_efficiency wire id) and 50% token_efficiency. Positive-case skill routing is scored under Discoverability, not Efficiency; a negative case without a routing target is N/A. N/A sources are omitted, remaining weights are renormalized, and the dimension is marked partial.

Signals present in this run:

  • security (Security): unsafe operations, secret leakage, and unauthorized access.
  • skill_execution (Skill Execution): whether the expected skill was selected, decoys were avoided, and the workflow executed.
  • skill_efficiency (Tool Productivity): tool-call productivity (legacy wire id; routing is scored under Discoverability).
  • accuracy (Accuracy): final-answer correctness against the reference answer.
  • goal_accuracy (Goal Accuracy): whether the user's goal was achieved.
  • behavior_check (Behavior Check): whether the expected workflow behavior was followed.
  • token_efficiency (Token Efficiency): actual uncached prompt plus completion usage (50% of Efficiency).
</details>

Freshness

Regenerate this benchmark when the skill, evaluation dataset, target agent/model, evaluator version, environment, or scoring policy changes.

Source: SKILL.md on GitHub

Third-party checks

No alerts16d3 checks · Risk SAFE
  • Gen Agent Trust Hub16d

    The skill is a metadata extraction tool for DICOM medical imaging files. It allows agents to read headers and check for standard Private Health Information (PHI) tags. No malicious behavior, obfuscation, or unauthorized data exfiltration was detected. The skill includes appropriate disclaimers regarding the scope of its PHI detection capabilities.

  • Socket16d

    No alerts

  • Snyk16d

    Risk: LOW · No issues

Provenance

Signed by skilld at 2cd3507. This ties the file your Agent reads to that commit on GitHub. It does not review the instructions.

Last checked against GitHub yesterday.

Activeupdated 2 weeks ago

Capability

What it can do
Runs commands
permissions
[
  "file_read",
  "file_write",
  "shell"
]
All 1 allowed tools
Bash
Other metadata
metadata
{
  "author": "NVIDIA MedTech Team",
  "tags": [
    "MedTech",
    "DICOM",
    "metadata"
  ]
}

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