Open CSV, Excel, Parquet, JSON or SQLite files and remote URLs, then query them.

Part of DuckDB's official Claude Code plugin, this skill lets Claude read almost any data file locally and answer questions about it. It uses DuckDB, so even large files are handled quickly.

Who it is for

Analysts
Researchers
Developers
Operations staff

Prompts to try

Once the skill is installed, ask for the result in plain words. Claude picks the skill up on its own.

Prompt 1

What's in this Parquet file?

Prompt 2

Read sales_2026.xlsx and show the top 10 customers by revenue

Prompt 3

Preview this CSV from a URL and summarize the columns

How to install it

In Claude Code

>/plugin marketplace add duckdb/duckdb-skills
>/plugin install duckdb-skills@duckdb-skills

In Claude.ai

Not practical in Claude.ai because the skill drives local command-line tools, so use Claude Code.

Good to know

Also listed as duckdb-skills in Anthropic's official marketplace. Tested on macOS and Linux.

Unlock the install steps

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How we checked it

Confirmed SKILL.md at skills/read-file/SKILL.md in duckdb/duckdb-skills via the GitHub API; skill folder last changed 2026-03-30, repo has 608 stars and was pushed 2026-04-23; also listed in Anthropic's official marketplace.

Source: github.com/duckdb/duckdb-skills/tree/main/skills/read-file

DuckDB Read Any Data File