dask

A Python library for processing data in parallel, including datasets too large to fit in memory or work spread across multiple computers. It provides interfaces similar to familiar pandas and NumPy workflows.

In plain words
What is it for?
Use it for larger-than-memory data analysis, parallel file processing, distributed computation, and workflows involving pandas, NumPy, or remote object storage.
Why use it?
It helps when a single-machine pandas or NumPy job runs out of memory, takes too long, or needs to use a computing cluster.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/dralkh/seerai/dask
Any agent
npx skills add dralkh/seerai --skill dask
Clone the repo
git clone --depth 1 https://github.com/dralkh/seerai

Made for: Claude Code, Codex.

Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,616 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00069 $0.03616
Opus 5 $0.00034 $0.01808
Sonnet 5 $0.00014 $0.00723
Haiku 4.5 $0.00007 $0.00362

Measured yesterday against content hash fffb66c082fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dask 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.

Origin

This is a copy

100% identical to dask — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/dask/SKILL.md · 481 lines

How it starts

The opening of the file, as written. The whole thing — 481 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dask

Overview

Dask is a Python library for parallel and distributed computing that enables three critical capabilities:

  • Larger-than-memory execution on single machines for data exceeding available RAM
  • Parallel processing for improved computational speed across multiple cores
  • Distributed computation supporting terabyte-scale datasets across multiple machines

Dask scales from laptops (processing ~100 GiB) to clusters (processing ~100 TiB) while maintaining familiar Python APIs.

Current upstream: dask 2026.3.0 (PyPI, March 2026). Docs: docs.dask.org. Since 2025.1.0, the expression-based DataFrame API with query planning is the only implementation — do not install dask-expr separately or set dataframe.query-planning: False.

Quick Start

Installation

uv pip install "dask>=2025.1"

For a typical pandas/NumPy workflow with the distributed scheduler and dashboard:

uv pip install "dask[complete]"

Remote object storage (S3, GCS, Azure):

uv pip install s3fs    # s3:// paths
uv pip install gcsfs   # gs:// paths

Requires Python 3.10+ (3.9 support dropped in 2024.12). DataFrame I/O requires PyArrow 16+ (as of dask 2026.1.2).

When to Use This Skill

This skill should be used when:

  • Process datasets that exceed available RAM
  • Scale pandas or NumPy operations to larger datasets
  • Parallelize computations for performance improvements
  • Process multiple files efficiently (CSVs, Parquet, JSON, text logs)
  • Build custom parallel workflows with task dependencies
  • Distribute workloads across multiple cores or machines

Core Capabilities

Dask provides five main components, each suited to different use cases:

1. DataFrames - Parallel Pandas Operations

Purpose: Scale pandas operations to larger datasets through parallel processing.

When to Use:

  • Tabular data exceeds available RAM
  • Need to process multiple CSV/Parquet files together
  • Pandas operations are slow and need parallelization
  • Scaling from pandas prototype to production

Read the full file on GitHub · 481 lines

Files

What ships with it

6 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 · 481 lines · 69 tokens per session scan A fffb66c082fb

Subscribe to this mod's changes

dask is a skill published in the GitHub repository dralkh/seerai (77 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 3,616 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to dask, differing in 4 lines, and is treated as a copy.

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