duckdb skillA
duckdb is agent-read markdown (skill) from fmind/dot: Query, transform, and export files or databases with DuckDB and SQLite..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
# DuckDB and SQLite DuckDB is the default engine for local analysis: it reads CSV, Parquet, and JSON directly, attaches SQLite files, and writes any of them back. SQLite stays the embedded store for applications; DuckDB is the tool you point at data. ## Commands ```bash duckdb -c "SELECT name, score FROM 'people.csv' WHERE score > 80 ORDER BY score DESC" # files are tables duckdb -json -c "SELECT * FROM 'events/*.json'" # JSON output for agents and jq duckdb lab.duckdb -c "CREATE OR REPLACE TABLE people AS FROM 'people.csv'" # persist into a database file duckdb -c "COPY (FROM 'people.csv') TO 'people.parquet'" # convert; Parquet is the durable format duckdb -c "ATTACH 'app.sqlite' AS s (TYPE sqlite, READ_ONLY); SELECT count(*) FROM s.users" # read an application database duckdb -c "SUMMARIZE FROM 'people.parquet'" # column stats in one call sqlite3 -readonly app.sqlite ".schema" && sqlite3 -readonly app.sqlite "PRAGMA integrity_check" # inspect the app store itself ``` …
Read the whole file at its exact version.
How to install
mdr add fmind/dot/duckdb@git:20260919.4491844mdr add fmind/dot/duckdb@sha256:b2afa2a83ea7c066Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_srktlagokfdp3y4l)
1 badge views in 30 days
Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260919.4491844 latest | 2026-09-19 | 4491844 | 4,119 B | A | view · diff |
| git:20260916.50d6810 | 2026-09-16 | 50d6810 | 4,095 B | A | view · diff |
| git:20260912.0ce18c0 | 2026-09-12 | 0ce18c0 | 4,166 B | A | view · diff |
| git:20260909.892d859 | 2026-09-09 | 892d859 | 4,049 B | A | view · diff |
| git:20260909.17296ea | 2026-09-09 | 17296ea | 3,869 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4119 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
fmind/dot · 9 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_srktlagokfdp3y4l GET https://markdownregistry.com/api/v1/resolve?ref=fmind/dot/duckdb GET https://markdownregistry.com/api/v1/blob/b2afa2a83ea7c066c469caf7d687f4af536c9c2241d6862b21940acac3180256
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.