---
title: "Ondb - Air Market"
description: "You have documents and notes, and the thing you need is buried somewhere in them. This pulls them apart into facts you can query: what do I know about this, how is this connected to that, what depend…"
canonical: "https://airmarket.ai/app/ondb"
---

[Air Market](/) / [Data & Analytics](/category/data) / Ondb

Skill by [x-cmd](/@x-cmd)

# Ondb

Turn documents into something you can actually ask questions of

## What this does

You have documents and notes, and the thing you need is buried somewhere in them. This pulls them apart into facts you can query: what do I know about this, how is this connected to that, what depends on this. It also checks that what you have stored stays consistent. Reach for it when remembering is the hard part.

### Top 3 things it does for you

- Break a document down into what it actually says
- Ask what you already know about something
- Link one thing to another

## Information

**Ondb at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [x-cmd](/@x-cmd) |
| Category | [Data & Analytics](/category/data) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 158 KB |
| Licence | Apache-2.0 |
| Repository | [x-cmd/x-cmd](https://github.com/x-cmd/x-cmd/tree/460cf788d73a18a4bd95be3f2472660a16ff5432/mod/ondb) |
| GitHub stars | 4,584 (as of Nov 2026) |
| Installs | 1, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Ondb and flagged nothing. AIR's verdict: **safe**.

**What Ondb's check was run against**

|  |  |
| --- | --- |
| Commit | 460cf788d73a18a4bd95be3f2472660a16ff5432 |
| Content hash | 6ba369255410ebc65fea8a5ac4050731758d0a3b80b1bd2e2770a6517e46204f |
| Files read | [Browse the files at this exact commit](https://github.com/x-cmd/x-cmd/blob/460cf788d73a18a4bd95be3f2472660a16ff5432/mod/ondb/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Ondb](/security/ondb)

## About Ondb

This is a logical analysis and reasoning tool. It decomposes documents into structured knowledge, then lets you query the entities and relations inside it, validate consistency, and index files.

It triggers on the natural asks - "remember", "what do I know about", "link X to Y", "show dependencies", "analyze this document" - as well as entity CRUD and access to data across skills.

## What's inside

- SKILL.md - instructions
- latest
- lib/__runcmd
- lib/add
- lib/advise
- lib/awk/compact_sql.awk
- lib/awk/genid.awk
- lib/awk/get.awk
- lib/awk/linked.awk
- lib/awk/ls.awk
- lib/awk/ontology.awk
- lib/awk/query.awk
- lib/awk/README.md - reference
- lib/awk/related.awk
- lib/awk/schema.awk
- lib/awk/snapshot.awk
- lib/awk/validate.awk
- lib/bench
- lib/compact
- lib/comprehensive-test
- lib/db
- lib/dbpath
- lib/example-test
- lib/example.sh - script
- lib/get
- lib/js/compact.js - script
- lib/js/get.js - script
- lib/js/ls.js - script
- lib/js/ondb_core.js - script
- lib/js/ontology.js - script
- lib/js/query.js - script
- lib/js/README.md - reference
- lib/libpath
- lib/link
- lib/linked
- lib/ls
- lib/main
- lib/py/compact.py - script
- lib/py/get.py - script
- lib/py/linked.py - script
- lib/py/ls.py - script
- lib/py/ondb_core.py - script
- lib/py/ontology.py - script
- lib/py/query.py - script
- lib/py/README.md - reference
- lib/query
- lib/related
- lib/rm
- lib/schema
- lib/set
- lib/sqlite/README.md - reference
- lib/test-unit
- lib/unlink
- lib/validate

## Questions

### Is Ondb safe to install?

AIR scanned this exact version of Ondb and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 460cf788d73a, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/ondb.

### How do I install Ondb?

Open https://airmarket.ai/app/ondb on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/x-cmd/x-cmd/tree/460cf788d73a18a4bd95be3f2472660a16ff5432/mod/ondb. Install from that link, not the branch.

## Related on Air Market

- [More Data & Analytics listings](/category/data)
- [Everything by x-cmd](/@x-cmd)

---

Canonical URL: <https://airmarket.ai/app/ondb>