anofox-forecast-data-prep

anofox-forecast-data-prep is a skill for Claude Code from DataZooDE/anofox-forecast. It costs 69 tokens per session (1,806 once invoked), scanned A, original, no licence file.

A guide to preparing time-based data for the anofoxforecast DuckDB extension. It covers filling missing time points, handling null values, removing unsuitable series, differencing, detrending, and working with grouped or hierarchical data.

In plain words
What is it for?
Use it before forecasting to repair gaps, handle missing values, adjust trends, or organise related series.
Why use it?
It helps turn incomplete or inconsistent raw data into a form that forecasting and backtesting can use.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Good fit Use it before forecasting to repair gaps, handle missing values, adjust trends, or organise related series.

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Install with agentmods
npx agentmods add skills/datazoode/anofox-forecast/anofox-forecast-data-prep
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 DataZooDE/anofox-forecast --skill anofox-forecast-data-prep
Clone the repo
git clone --depth 1 https://github.com/DataZooDE/anofox-forecast

Made for: Claude Code.

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 anofox-forecast-data-prep

README.md
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Your own site
<a href="https://agentmods.dev/skills/datazoode/anofox-forecast/anofox-forecast-data-prep"><img src="https://agentmods.dev/badge/skills/datazoode/anofox-forecast/anofox-forecast-data-prep/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 anofox-forecast-data-prep

Your own site · 80×15
<a href="https://agentmods.dev/skills/datazoode/anofox-forecast/anofox-forecast-data-prep"><img src="https://agentmods.dev/badge/skills/datazoode/anofox-forecast/anofox-forecast-data-prep.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,806 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 unknown 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 $0.00069 $0.01806
Opus 5 $0.00034 $0.00903
Sonnet 5 $0.00014 $0.00361
Haiku 4.5 $0.00007 $0.00181

Measured 9d ago against content hash 5ab3c81f6e00, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

anofox-forecast-data-prep 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 9d 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.

.claude/skills/anofox-forecast-data-prep/SKILL.md · 165 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 9d ago First seen · 165 lines · 69 tokens per session scan A 5ab3c81f6e00

Subscribe to this mod's changes

anofox-forecast-data-prep is a skill published in the GitHub repository DataZooDE/anofox-forecast (37 stars, last pushed 7d ago), with no licence file. It adds 69 tokens to every session and 1,806 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 2026-08-30.