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.
npx agentmods add skills/nextflow-io/agent-skills/install-nextflownpx skills add nextflow-io/agent-skills --skill install-nextflowgit clone --depth 1 https://github.com/nextflow-io/agent-skillsWrote 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.
[](https://agentmods.dev/skills/nextflow-io/agent-skills/install-nextflow)<a href="https://agentmods.dev/skills/nextflow-io/agent-skills/install-nextflow"><img src="https://agentmods.dev/badge/skills/nextflow-io/agent-skills/install-nextflow.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00051 | $0.01403 |
| Opus 5 | $0.00026 | $0.00701 |
| Sonnet 5 | $0.00010 | $0.00281 |
| Haiku 4.5 | $0.00005 | $0.00140 |
Grade C, and why
install-nextflow scanned grade C with 2 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -s "https://get.sdkman.io" | bash Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s "https://get.sdkman.io" | bash How it starts
The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Install or Upgrade Nextflow
Install Nextflow (or upgrade an existing installation) and ensure the Java prerequisite is in place.
Step 1: Check Whether Nextflow Is Installed
command -v nextflow && nextflow -version
- If installed, parse the version from the output and proceed to Step 2.
- If not installed, skip to Step 3.
Step 2: Check for Upgrades (Existing Install)
If Nextflow is already installed:
- Read the installed version from
nextflow -version. - If the installed version is older than 26.04, the user MUST upgrade — other Nextflow skills depend on it.
- Otherwise, propose an upgrade only if a newer version is available.
Run a self-update (it checks the latest release and updates if newer):
nextflow self-update
Confirm with the user before running it. After the update, re-run nextflow -version to verify.
If the install is already up to date, stop here.
Step 3: Verify Java 17+ (Required for Installing Nextflow)
Nextflow requires Java 17 or later. Check the installed Java version:
java -version
Note: java -version writes to stderr, not stdout. Capture both streams when parsing:
java -version 2>&1 | head -1
- If Java 17+ is present, proceed to Step 4.
- If Java is missing or older than 17, install Java 21 using SDKMAN (Step 3a).
Step 3a: Install Java 21 via SDKMAN
First, check whether SDKMAN is installed:
[ -s "$HOME/.sdkman/bin/sdkman-init.sh" ] && echo "SDKMAN present" || echo "SDKMAN missing"
If SDKMAN is missing, install it:
curl -s "https://get.sdkman.io" | bash
Then load SDKMAN into the current shell session and install Java 21:
source "$HOME/.sdkman/bin/sdkman-init.sh"
sdk install java 21-tem
After installation, verify:
java -version
Step 4: Install Nextflow
Prefer curl; fall back to wget if curl is unavailable.
Detect which downloader is available:
command -v curl >/dev/null && echo "curl" || (command -v wget >/dev/null && echo "wget" || echo "none")
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.
- 6d ago First seen · 171 lines · 51 tokens per session scan C a2b8ba6464bc
install-nextflow is a skill published in the GitHub repository nextflow-io/agent-skills (21 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 51 tokens to every session and 1,403 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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