tabix-index-validation-and-inspection

tabix-index-validation-and-inspection is a skill for Claude Code, Codex from HolobiomicsLab/asb-skill-collections. It costs 65 tokens per session (1,488 once invoked), scanned A, original, Apache-2.0.

A validation procedure for tabix-indexed methylation files used by methylKit. Tabix is a tool that lets software access compressed genomic files by region, using a separate index.

In plain words
What is it for?
It is for checking bgzipped methylation files, their .tbi indexes, and required methylKit headers in a disk-backed data object.
Why use it?
It catches missing indexes, damaged files, or missing metadata before methylation analysis or sample merging fails later.

Skill for Claude CodeCodex

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

Good fit It is for checking bgzipped methylation files, their .tbi indexes, and required methylKit headers in a disk-backed data object.

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Install with agentmods
npx agentmods add skills/holobiomicslab/asb-skill-collections/tabix-index-validation-and-inspection
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 HolobiomicsLab/asb-skill-collections --skill tabix-index-validation-and-inspection
Clone the repo
git clone --depth 1 https://github.com/HolobiomicsLab/asb-skill-collections

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.

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README.md
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<a href="https://agentmods.dev/skills/holobiomicslab/asb-skill-collections/tabix-index-validation-and-inspection"><img src="https://agentmods.dev/badge/skills/holobiomicslab/asb-skill-collections/tabix-index-validation-and-inspection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,488 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 pass 7 Sept 2026
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 $0.00065 $0.01488
Opus 5 $0.00032 $0.00744
Sonnet 5 $0.00013 $0.00298
Haiku 4.5 $0.00006 $0.00149

Measured 6d ago against content hash 9d5dfbf9368e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

tabix-index-validation-and-inspection 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.

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.

collections/epigenomics/v1/skills/tabix-index-validation-and-inspection/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

tabix-index-validation-and-inspection

Summary

Validate and inspect tabix-indexed bgzipped methylation data files to confirm correct indexing, file integrity, and methylKit metadata presence. This skill ensures that disk-backed methylRawListDB objects reference valid external tabix files with proper headers before downstream analysis.

When to use

After creating a methylRawListDB object via methRead() with dbtype='tabix', or when loading pre-existing tabix-backed methylation files, to verify that bgzipped files are correctly indexed and contain required methylKit metadata headers (≥v1.13.1) before proceeding with differential methylation analysis or sample merging.

When NOT to use

  • Input data is already loaded in memory as a standard methylRawList (non-database-backed) object
  • Tabix files are not available or have been deleted after initial loading
  • methylKit version is < 1.13.1 and does not support tabix-backed database mode

Inputs

  • methylRawListDB object created with dbtype='tabix'
  • bgzipped tabix-indexed methylation files (.gz with .tbi index)
  • methylKit metadata headers within tabix files

Outputs

  • Validated methylRawListDB object with confirmed dbpath references
  • Inspection report of tabix file headers and metadata
  • File integrity assessment (presence of index, header validity, version check)

How to apply

Verify that the methylRawListDB object's dbpath slot in each constituent methylRaw object references valid file paths to bgzipped tabix files. Inspect the tabix file headers using appropriate tools (e.g., zcat or tabix command-line utilities) to confirm presence of methylKit-specific metadata and version information. Cross-check that file timestamps and index (.tbi) presence match expected standards for database-mode storage. Validate object structure by examining the methylRawListDB list composition and ensuring coverage statistics align with input file contents. Compare object integrity metrics (total bases, sample counts) against the raw tabix file statistics to confirm lossless loading from external storage.

Read the full file on GitHub · 98 lines

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 · 98 lines · 65 tokens per session scan A 9d5dfbf9368e

Subscribe to this mod's changes

tabix-index-validation-and-inspection is a skill published in the GitHub repository HolobiomicsLab/asb-skill-collections (15 stars, last pushed 2d ago), licensed Apache-2.0. It adds 65 tokens to every session and 1,488 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 2026-09-06.

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