dna-methylation

dna-methylation is a skill for Claude Code, Codex from inflexa-ai/inflexa. It costs 40 tokens per session (2,682 once invoked), scanned A, original, Apache-2.0.

A guide for studying DNA methylation, a chemical mark that can affect how genes are used. It covers methylation arrays such as 450K and EPIC, bisulfite sequencing, differential methylation, biological-age clocks, cell-type estimation, and epigenome-wide association studies.

In plain words
What is it for?
Use it to plan methylation quality checks, differentially methylated positions or regions, clock calculations, cell-type deconvolution, and association studies when the needed inputs and annotations are available.
Why use it?
It identifies which analyses cannot run because the required Illumina array manifest and annotation files are not available. This prevents planning a pipeline that would fail at the first data-reading or annotation step.

Skill for Claude CodeCodex

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

Good fit Use it to plan methylation quality checks, differentially methylated positions or regions, clock calculations, cell-type deconvolution, and association studies when the needed inputs and annotations are available.

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Install with agentmods
npx agentmods add skills/inflexa-ai/inflexa/dna-methylation
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 inflexa-ai/inflexa --skill dna-methylation
Clone the repo
git clone --depth 1 https://github.com/inflexa-ai/inflexa

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 dna-methylation

README.md
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Your own site
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Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,682 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 $0.00040 $0.02682
Opus 5 $0.00020 $0.01341
Sonnet 5 $0.00008 $0.00536
Haiku 4.5 $0.00004 $0.00268

Measured yesterday against content hash cf21ba020c9f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

dna-methylation 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 yesterday.

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.

skills/dna-methylation/SKILL.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DNA Methylation Analysis

Comprehensive guidelines for methylation array processing, bisulfite sequencing analysis, differential methylation, epigenetic clocks, cell type deconvolution, and epigenome-wide association studies.

Environment Constraint: Array Annotation Is Not Staged

Read this before planning any array pipeline. The analysis packages (minfi, ChAMP, DMRcate, missMethyl, EpiDISH, methylclock) are installed, but the Illumina array manifest and annotation packages they depend on are not — no IlluminaHumanMethylation450kanno.*, IlluminaHumanMethylationEPICanno.*, IlluminaHumanMethylationEPICv2anno.*, and no matching *manifest package. There is also no network egress, so they cannot be installed at runtime, and Bioconductor's ExperimentHub/AnnotationHub fetches fail even though those client packages are present.

What this means in practice:

Step Status
IDAT → RGChannelSet → normalized betas (minfi, ChAMP) Cannot run. Requires the manifest package to decode probe addresses.
Genomic mapping / probe annotation (mapToGenome(), getAnnotation()) Cannot run. Requires the anno package.
Array DMR calling (DMRcate::cpg.annotate(datatype = "array")) Cannot run. Resolves probe coordinates from the anno package.
Deconvolution from an existing beta matrix (EpiDISH) Runs. Self-contained references, no annotation dependency.
Epigenetic clocks (methylclock) Runs on a beta matrix, but needs clock coefficients — see references/methylclock-api.md.
Bisulfite-seq (dmrseq / DSS) Downstream only. Both run on a methylation/coverage matrix you already have; bisulfite read alignment and methylation extraction are upstream of this pack (see §2).

How to proceed: verify the annotation package actually loads before building a pipeline around it. If it does not, say so plainly — name the missing package and the step it blocks — and then do the analysis the data does support. A beta or M-value matrix that arrives already processed (from GEO, a collaborator, or an upstream step) still supports DMP testing, deconvolution, clocks, and EWAS modelling; only the probe-to-genome annotation is missing, and results can be reported by CpG ID. Do not silently substitute a different array's annotation, and do not present an unannotated result as though it were annotated.

Read the full file on GitHub · 181 lines

Files

What ships with it

5 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. yesterday First seen · 181 lines · 40 tokens per session scan A cf21ba020c9f

Subscribe to this mod's changes

dna-methylation is a skill published in the GitHub repository inflexa-ai/inflexa (33 stars, last pushed today), licensed Apache-2.0. It adds 40 tokens to every session and 2,682 once invoked, about $0.0002 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 2026-09-09.

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