tiledbvcf

tiledbvcf is a skill for Claude Code, Codex from K-Dense-AI/scientific-agent-skills. It costs 62 tokens per session (3,554 once invoked), scanned A, original, MIT.

A storage and query system for genomic variant data in VCF or BCF files. It uses compressed arrays to add samples, search selected genome regions across many samples, and export subsets locally or from cloud storage.

In plain words
What is it for?
Use it to build variant databases, ingest cohort data, add samples incrementally, query genomic regions, work with cloud-hosted datasets, and export selected variants.
Why use it?
It avoids repeatedly merging large variant files when new samples arrive and makes population-scale queries more manageable. It is intended for efficient genomic data operations rather than general-purpose data storage.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to build variant databases, ingest cohort data, add samples incrementally, query genomic regions, work with cloud-hosted datasets, and export selected variants.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/k-dense-ai/scientific-agent-skills/tiledbvcf
About the project

Scientific Agent Skills is a collection of reusable procedures that give AI agents capabilities for scientific research across areas such as biology, chemistry, medicine, and drug discovery. It is used by researchers and by people building AI scientist workflows with compatible coding agents. The catalogue contains many of the project's skills and supporting instructions.

K-Dense-AI/scientific-agent-skills · 54,587 stars · on GitHub · arxiv.org

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.

Any agent
npx skills add K-Dense-AI/scientific-agent-skills --skill tiledbvcf
Clone the repo
git clone --depth 1 https://github.com/K-Dense-AI/scientific-agent-skills

Made for: Claude Code, Codex.

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 tiledbvcf

README.md
[![agentmods](https://agentmods.dev/badge/skills/k-dense-ai/scientific-agent-skills/tiledbvcf/github.svg)](https://agentmods.dev/skills/k-dense-ai/scientific-agent-skills/tiledbvcf)
Your own site
<a href="https://agentmods.dev/skills/k-dense-ai/scientific-agent-skills/tiledbvcf"><img src="https://agentmods.dev/badge/skills/k-dense-ai/scientific-agent-skills/tiledbvcf/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 tiledbvcf

Your own site · 80×15
<a href="https://agentmods.dev/skills/k-dense-ai/scientific-agent-skills/tiledbvcf"><img src="https://agentmods.dev/badge/skills/k-dense-ai/scientific-agent-skills/tiledbvcf.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,554 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
  • Socket pass 2 Oct 2026
  • Snyk pass 2 Oct 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 3 findings, 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 MCP Rug Pull · line 53
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • medium MCP Rug Pull · line 54
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • low Privilege Escalation · line 236
    Skill requests more permissions than appear necessary for its stated functionality. Review if elevated access is justified.
    Fix: Request only the minimum permissions required. Document why each permission is needed. Remove broad permissions like '*' or 'all'.
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 $0.00062 $0.03554
Opus 5.5 $0.00025 $0.01422
Sonnet 5.5 $0.00012 $0.00711
Haiku 4.5 $0.00006 $0.00355

Measured 24d ago against content hash 38e55a6962e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tiledbvcf 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 24d 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.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

  • tiledbvcf — 100% identical, 589 lines differ
  • tiledbvcf — 100% identical, 591 lines differ
  • tiledbvcf — 100% identical, 589 lines differ
  • tiledbvcf — 100% identical, 591 lines differ
  • tiledbvcf — 98% identical, 596 lines differ
  • tiledbvcf — 98% identical, 590 lines differ
  • tiledbvcf — 98% identical, 590 lines differ
  • tiledbvcf — 94% identical, 594 lines differ
skills/tiledbvcf/SKILL.md · 283 lines

How it starts

The opening of the file, as written. The whole thing — 283 lines — stays where its author put it; the contents beside it link to each section on GitHub.

TileDB-VCF

When to use

Use for cohort variant storage, incremental sample ingestion, interval queries, and exporting subsets for downstream genomics. TileDB-VCF stores records; it does not perform joint variant calling, association testing, normalization, or population structure adjustment. Dataset size alone does not determine whether cloud execution is appropriate: benchmark the intended sample, region, and attribute workload.

This skill targets released TileDB-VCF 0.40.3. Native Python/CLI checks used two synthetic single-sample VCFs on macOS ARM64. Cloud client 0.14.4 contracts were checked against its released wheel and mocked dispatch; hosted queries and jobs were not executed. See installation and verification notes.

Install and verify the native stack

The tiledbvcf Python distribution is not published on PyPI at this review. The official tiledb Conda channel supplies tiledbvcf-py 0.40.3 for macOS ARM64, macOS x86-64, and Linux x86-64, with Python 3.9-3.12 builds. tiledb on PyPI is TileDB-Py and does not install TileDB-VCF. Native Apple Silicon no longer requires forcing CONDA_SUBDIR=osx-64.

For the tested macOS ARM64 environment, pins below avoid versioned-library import failures in the otherwise successful current Conda solve:

conda create -n tiledb-vcf -c tiledb -c conda-forge \
  python=3.12 tiledbvcf-py=0.40.3 \
  azure-core-cpp=1.16.2 azure-storage-blobs-cpp=12.16.0 \
  azure-storage-files-datalake-cpp=12.14.0 capnproto=1.4.0 c-blosc2=2.23.1
conda activate tiledb-vcf
python -c 'import tiledbvcf; print(tiledbvcf.version)'
tiledbvcf version

The equivalent Micromamba solve/install was executed. These extra ABI pins are a verified macOS ARM64 workaround, not a claim about all platforms. Preserve the resolved environment for production. Other-platform installation and official Docker images are alternatives documented upstream, not tested here.

Prepare and create a cohort

  1. Record reference assembly, contig naming/lengths, callers, normalization rules, sample identity, and file checksums. Do not mix assemblies or assume 1 and chr1 are equivalent. Confirm compatible headers across inputs.
  2. Each input must contain one sample, be coordinate sorted, and have an index. Use BGZF-compressed VCF or BCF with a matching .csi/.tbi. Inspect bcftools query -l sample1.vcf.gz; filenames are not sample identifiers.
  3. Create the dataset explicitly, then ingest. Opening mode="w" alone does not create its schema. Materialize frequently read fields at creation time.
  4. Validate a small known interval and a round-trip export before scaling.

Read the full file on GitHub · 283 lines

Files

What ships with it

1 file 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. 24d ago Changed · -173 lines · +16 tokens per session 38e55a6962e1
  2. 25d ago Changed 594578a931bd
  3. 1mo ago First seen · 456 lines · 46 tokens per session scan A 7f051f513865

Subscribe to this mod's changes

tiledbvcf is a skill published in the GitHub repository K-Dense-AI/scientific-agent-skills (54,587 stars, last pushed 7d ago), licensed MIT. It adds 62 tokens to every session and 3,554 once invoked, about $0.0002 per session on Opus 5.5. 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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