Skill v1.0.2

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withqwerty/nutmeg/store

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PublishedOctober 14, 2026 at 09:21 AM

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version: "1.0.2" name: nutmeg-store description: "Store and publish football data: databases, file formats, cloud storage, project layout, and sharing outputs (Streamlit, Observable, GitHub Pages)." argument-hint: "[storage question or 'publish']" allowed-tools: ["Read", "Write", "Bash", "AskUserQuestion", "mcp__plugin_nutmeg_football-docs__search_docs", "mcp__football-docs__search_docs"]

Store

Help the user choose storage formats, locations, and publishing methods for their football data.

Accuracy

Read and follow ${CLAUDE_PLUGIN_ROOT}/docs/accuracy-guardrail.md before answering any question about provider-specific facts (IDs, endpoints, schemas, coordinates, rate limits). Always use search_docs — never guess from training data.

First: check profile

Read .nutmeg.user.md. If it doesn't exist, continue with sensible defaults (Python and pandas, intermediate level) and suggest running /nutmeg setup at the end.

Storage format decision tree

Small projects (< 100MB, single user)

Format	Best for	Tools
JSON	Raw event data, API responses	Any language
CSV	Tabular stats, easy to share	Spreadsheets, pandas, R
Parquet	Columnar analytics, fast queries	polars, pandas, DuckDB, Arrow
SQLite	Relational queries, multiple tables	Any language, DB browser tools

Recommendation: Start with JSON for raw data, Parquet for processed data.

Medium projects (100MB - 10GB)

Format	Best for	Notes
Parquet files	Analytics workloads	5-10x smaller than JSON, fast columnar reads
DuckDB	SQL analytics on local files	Queries Parquet/CSV directly, no server needed
SQLite	Relational data with joins	Single file, portable, ACID compliant

Recommendation: Parquet for storage, DuckDB for querying.

Large projects (> 10GB, multiple users)

Solution	Best for	Cost
PostgreSQL	Production apps, complex queries	Free self-hosted; managed hosting is paid
BigQuery	Massive analytical queries	Free tier, then pay per query
Cloudflare R2	Object storage (raw files)	Free tier, then pay per GB
S3 / GCS	Object storage at scale	Pay per GB

Prices and free tiers change. Check the provider's current pricing page before you quote a number.

Directory structure

Recommend this structure for football data projects:

project/
  data/
    raw/                  # Untouched API/scrape responses
      statsbomb/
        events/
        matches.json
      fbref/
        2024/
    processed/            # Cleaned, transformed data
      events.parquet
      shots.parquet
      passes.parquet
    derived/              # Computed metrics
      xg_model.parquet
      passing_networks/
  notebooks/              # Analysis notebooks
  scripts/                # Data pipeline scripts
  outputs/                # Charts, reports, exports
  .env                    # API keys (gitignored)
  .nutmeg.user.md         # Nutmeg profile

Publishing and sharing

Interactive dashboards

Platform	Language	Cost	Notes
Streamlit	Python	Free (community cloud)	Most popular for football analytics. Deploy from GitHub
Observable	JavaScript	Free tier	Great for D3.js visualisations. Notebooks + Framework
Shiny	R	Free tier (shinyapps.io)	R ecosystem integration
Gradio	Python	Free (HuggingFace Spaces)	Quick ML model demos

Static sites

Platform	Notes
GitHub Pages	Free. Good for static charts (D3, matplotlib exports)
Cloudflare Pages	Free. Faster, more features than GH Pages
Vercel	Free tier. Good for Next.js/Astro sites

Sharing data

Method	Best for
GitHub repo	Small datasets (< 100MB), code + data together
GitHub Releases	Larger files (check GitHub's current size limits)
Kaggle Datasets	Community sharing, discoverable, free
HuggingFace Datasets	ML-focused, versioned, free

Handing over a research project

In a research project (research/.active exists), package the work for a teammate, a reviewer or a client with python3 "${CLAUDE_PLUGIN_ROOT}/core/nutmeg.py" bundle --raw no (or --raw yes). Always ask the user which, every time:

--raw no keeps raw data (the project's data/, run outputs and figure snapshots) out and lists it by hash.

Safe for licensed provider or club data.

--raw yes includes it. Only when the user has the right to share the data; the gate shows the team's licence notes.

The bundle always holds the question, plan, ledger, receipts, outputs, run records with their code, the data manifest and the environment (lockfiles, or the Python version and package list).

Social media / content

Output	Tool	Notes
Static charts	matplotlib, ggplot2, D3.js	Export as PNG/SVG
Animated charts	matplotlib.animation, D3 transitions	Export as GIF/MP4
Twitter/X threads	Chart images + alt text	Accessibility matters
Blog posts	Markdown + embedded charts	GitHub Pages, Medium, Substack

Cost awareness

Based on the user's .nutmeg.user.md goals, flag costs:

Exploration/learning: Everything can be free. StatsBomb open data + Jupyter/Colab + GitHub Pages.
Content creation: Streamlit Community Cloud is free. Cloudflare Pages is free.
Professional: Budget for commercial data access. Provider pricing is negotiated, so do not quote a figure.
Product: Database hosting ($7-50/mo), consider data licensing costs separately.

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