ggsql SKILL.md skillA
ggsql from posit-dev/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add posit-dev/skills/ggsql@v1.1Pins v1.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- posit-dev/skills
- Path
ggsql/ggsql/SKILL.md- Versions recorded
- 3
- Latest version
- v1.1, committed Sep 14, 2026
- First version recorded
- Apr 20, 2026
- Size
- 13,925 bytes
- Repository stars
- 552
- License
- MIT
Write ggsql queries — a grammar of graphics for SQL. Use when the user wants to create, modify, or understand a ggsql visualization query.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# ggsql Query Writer ggsql combines a SQL query with a Grammar-of-Graphics visualization spec in one syntax. Write queries using ONLY the syntax below — NEVER invent clauses, settings, aesthetics, layer types, or palette names; say so if unsure whether something exists. ## Query structure Optional SQL part + required `VISUALISE`/`VISUALIZE` part. - **SELECT → VISUALISE**: last statement is a SELECT (bare, `WITH...SELECT`, set ops); its result feeds VISUALISE, which has no `FROM`. ```ggsql SELECT name, score_a, score_b FROM 'dataset.csv' WHERE value > 50 VISUALISE score_a AS x, score_b AS y [DRAW / PLACE / SCALE / FACET / PROJECT / LABEL clauses] ``` - **VISUALISE FROM**: VISUALISE supplies its own source (table/file/CTE/built-in), no trailing SELECT. ```ggsql WITH summary AS (SELECT category, COUNT(*) AS n FROM 'dataset.csv' GROUP BY category) VISUALISE category AS x, n AS y FROM summary DRAW bar ``` **Data sources** (in `VISUALISE ... FROM` or `DRAW ... MAPPING ... FROM`): unquoted table/CTE (`FROM sales`), quoted file path (`FROM 'data.csv'`), built-in dataset (`FROM ggsql:penguins`, `FROM ggsql:airquality`). ## VISUALISE clause …
Read the whole file at its exact version.
How to install
mdr add posit-dev/skills/ggsql@sha256:a24943e2e2354f58The line at the top of this page pins the label v1.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_n7xoeo7wwjls72u4)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Apr 20, 2026 and Sep 14, 2026, about one every 74 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1 latest | 2026-09-14 | 1bb49b8 | 13,925 B | A | view · diff |
| v1.0 | 2026-04-29 | e3927d4 | 17,721 B | A | view · diff |
| v1.0 | 2026-04-20 | 1dc75cb | 17,556 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 (13925 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
posit-dev/skills · 552 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_n7xoeo7wwjls72u4 GET https://markdownregistry.com/api/v1/resolve?ref=posit-dev/skills/ggsql GET https://markdownregistry.com/api/v1/blob/a24943e2e2354f58fadd5f63a19b088353fb99ebb87840ca49f2c9e1b43e6732
Your AI assistant 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.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.