DuckDB · DataFrames

Migrate a whole ArcGIS Hub site into a PortalJS Arc portal end-to-end.

datopian/portaljs

Convert any data file to another format: CSV, Parquet, JSON, Excel, GeoJSON, and more.

duckdb/duckdb-skills

Investigates geocoder data quality issues by querying live S3 parquet files via MotherDuck MCP.

walkthru-earth/geocoding-playground

Read any data file (CSV, JSON, Parquet, Avro, Excel, spatial, SQLite) or remote URL (S3, HTTPS).

duckdb/duckdb-skills

Analyse GC2/Centia Parquet snapshots with DuckDB by walking the STAC catalog.json in the snapshot store — find datasets, decide whether a dataset has geometry (and in which CRS), read one snapshot…

mapcentia/geocloud2

Works with datasets far too big to download or load in pandas — SQL over remote Parquet with DuckDB, aggregate-then-model, iterate on samples.

flyrank-bih/flyrank-ml-internship-starter

Analyzes CSV, Parquet and JSON data with DuckDB, Polars, numpy and matplotlib, preferring a persistent kernel over repeated one-shot processes.

code-yeongyu/oh-my-openagent

Guides database architecture for PostgreSQL, DuckDB, Parquet, PGVector, and Neo4j.

rileyhilliard/claude-essentials

Exploratory data analysis. An agent skill from oaustegard/claude-skills.

oaustegard/claude-skills

Internal — for Boundless team members only. An agent skill from boundless-xyz/boundless.

boundless-xyz/boundless

QuantDB 服务器数据结构与读取口径 — 数据目录组织（1klinedata~6mldatasets）、Hive 分区规律（dt=YYYYMMDD 整数）、单文件 {symbol}.parquet、parquet 后缀式代码 600519.SH 与 PG 前缀式 SH600519 的转换口径、quantdbhub.py 单一读取入口与 DuckDB…

qusong0627/QuantMind

Use DuckDB from MATLAB via Database Toolbox (R2026a+) as a non-math operations engine on large tabular files (CSV/Parquet/JSON) and as a zero-config embedded database.

matlab/matlab-agentic-toolkit

A skill your agent uses when a raw table is too dirty to trust — nulls, sentinels, duplicate rows, category sprawl, mixed types, bad dates — and you need a re-runnable clean() plus a schema gate…

ericrisco/rsc-harness

DuckDB CLI specialist for SQL analysis, data processing and file conversion.

aAAaqwq/AGI-Super-Team

A skill your agent uses when working with structured data files (CSV, JSON, YAML, TOML, Parquet) — querying, transforming, filtering, aggregating, or converting between formats

jeremylongshore/tons-of-skills-marketplace