explore SKILL.md skillA
explore from exmergo/dex is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add exmergo/dex/explore@git:20261102.6bd9785Pins git:20261102.6bd9785 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- exmergo/dex
- Path
claude/skills/explore/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261102.6bd9785, committed Nov 2, 2026
- First version recorded
- Oct 27, 2026
- Size
- 25,232 bytes
- Repository stars
- 109
- License
- Apache-2.0
Use this whenever you need to know what is actually in a database, warehouse, or DuckDB file before you trust it: inventory, column profiles, PII detection, grain and data-quality problems, verified joins, ER diagrams, ad-hoc SQL probes, segmentation, and the semantic layer a repo declares (dbt, Ossie, SLayer, or Cube). Trigger it on an unmet precondition, not on phrasing: if you are about to write or fix SQL against tables whose columns, types, grain, or join keys you have not verified in…
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
# Explore Make sense of a warehouse or a local DuckDB database the way an analytics engineer does: rank what matters, drill selectively, and persist a draft map in `.dex/`. This skill is read-only: it writes nothing but the `.dex/` cache. <!-- dex:procedure:begin --> ## Procedure Dex works in one loop: explore, transform, maintain. `dex <command>` below is the `dex` CLI; where it is not installed, run the same command through the skill's `scripts/run.py` wrapper. Each command prints one JSON envelope: read it and decide the next step from it. Step 1 only reads. Steps 2 to 5 change the project, so take them only when the task asks for a change; a question about the data stops after step 1 and reports what it found. 1. **Profile what the change reads.** Before writing or fixing SQL against a table whose columns, types, grain or join keys you have not verified in this session, run `dex explore profile <tables>` on every relation the change reads (`dex explore map` when you do not yet know which), and `dex explore relationships --verify` for the joins it will make. Answer data questions with `dex explore query`, never with a raw database client. …
Read the whole file at its exact version.
How to install
mdr add exmergo/dex/explore@sha256:ad80bcb668906e0dThe line at the top of this page pins the label git:20261102.6bd9785, 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_gpxsdtuvbtv4pkxb)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Oct 27, 2026 and Nov 2, 2026, about one every day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261102.6bd9785 latest | 2026-11-02 | 6bd9785 | 25,232 B | A | view · diff |
| git:20261101.72e405c | 2026-11-01 | 72e405c | 22,762 B | A | view · diff |
| git:20261101.b4e56e3 | 2026-11-01 | b4e56e3 | 20,957 B | A | view · diff |
| git:20261030.52d0869 | 2026-10-30 | 52d0869 | 17,250 B | A | view · diff |
| git:20261029.c5e0384 | 2026-10-29 | c5e0384 | 16,348 B | A | view · diff |
| git:20261027.aec1d78 | 2026-10-27 | aec1d78 | 16,137 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 (25232 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
exmergo/dex · 109 stars · license Apache-2.0 · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gpxsdtuvbtv4pkxb GET https://markdownregistry.com/api/v1/resolve?ref=exmergo/dex/explore GET https://markdownregistry.com/api/v1/blob/ad80bcb668906e0debf6d8a44cb2588c35637f32f95cc45dc1442bf69045e6da
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.