wdl-task-starter

wdl-task-starter is a skill for Claude Code, Codex from ma-compbio-lab/SkillFoundry. It costs 41 tokens per session (508 once invoked), scanned A, original, Apache-2.0.

A minimal WDL task and workflow that runs locally with miniwdl and produces a greeting file. WDL is a language for describing data-processing tasks, while miniwdl is a local runner for them.

In plain words
What is it for?
Use it to run a task with JSON inputs, inspect its outputs, and adapt the example for new workflows.
Why use it?
It gives you a verified example for learning or authoring small WDL workflows without needing cloud execution.

Skill for Claude CodeCodex

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

Good fit Use it to run a task with JSON inputs, inspect its outputs, and adapt the example for new workflows.

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Install with agentmods
npx agentmods add skills/ma-compbio-lab/skillfoundry/wdl-task-starter
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 ma-compbio-lab/SkillFoundry --skill wdl-task-starter
Clone the repo
git clone --depth 1 https://github.com/ma-compbio-lab/SkillFoundry

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 wdl-task-starter

README.md
[![agentmods](https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/wdl-task-starter/github.svg)](https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/wdl-task-starter)
Your own site
<a href="https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/wdl-task-starter"><img src="https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/wdl-task-starter/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 wdl-task-starter

Your own site · 80×15
<a href="https://agentmods.dev/skills/ma-compbio-lab/skillfoundry/wdl-task-starter"><img src="https://agentmods.dev/badge/skills/ma-compbio-lab/skillfoundry/wdl-task-starter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 508 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 $0.00041 $0.00508
Opus 5 $0.00020 $0.00254
Sonnet 5 $0.00008 $0.00102
Haiku 4.5 $0.00004 $0.00051

Measured 6d ago against content hash f900d17ebbbb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

wdl-task-starter 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.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/run_wdl_hello.py, tests/test_run_wdl_hello.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/reproducible-workflows/wdl-task-starter/SKILL.md · 53 lines

What it actually says

Purpose

Run a local WDL task end to end and use it as a starter for task and workflow authoring.

When to use

  • You need a verified OpenWDL-style local example.
  • You want a small WDL task or workflow starter with JSON inputs.

When not to use

  • You need cloud backends or Cromwell execution.
  • You need advanced imports or large workflow graphs.

Inputs

  • A WDL document
  • A Cromwell-style JSON input object
  • Optional run directory and summary path

Outputs

  • A JSON run summary with the output JSON emitted by miniwdl
  • The rendered greeting.txt file inside the run directory

Requirements

  • slurm/envs/workflow-languages
  • miniwdl
  • udocker inside the same prefix for daemonless local execution

Procedure

  1. Run python3 skills/reproducible-workflows/wdl-task-starter/scripts/run_wdl_hello.py --name Ada --workspace scratch/wdl/workspace --summary-out scratch/wdl/summary.json.
  2. Inspect the WDL outputs JSON and the materialized greeting.txt; the wrapper configures a daemonless local miniwdl execution path for this toy task.
  3. Use examples/hello.wdl and examples/hello-inputs.json as the base for new tasks or workflows.

Validation

  • miniwdl run exits successfully.
  • The output JSON includes greeting text and a file output.

Failure modes and fixes

  • Missing runtime: verify slurm/envs/workflow-languages exists and python -m WDL --version works.
  • Missing daemonless backend: verify slurm/envs/workflow-languages/bin/udocker --version works.
  • Input mismatch: run miniwdl run --json to inspect the required input object shape.

Safety and limits

  • This skill runs a local toy workflow only.
  • Extend runtime blocks carefully before using external containers or large file inputs.

Provenance

Files

What ships with it

10 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. 6d ago First seen · 53 lines · 41 tokens per session scan A f900d17ebbbb

Subscribe to this mod's changes

wdl-task-starter is a skill published in the GitHub repository ma-compbio-lab/SkillFoundry (38 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 41 tokens to every session and 508 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 2026-09-03.

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