Datamodellm
nimbalyst/nimbalyst
Create visual data models for database schemas using Nimbalyst's DataModelLM editor.
Deep expertise in Logseq's Datascript database schema. An agent skill from aiskillstore/marketplace.
Install Understanding DB Schema
$ npx skills add aiskillstore/marketplace --skill understanding-db-schema -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace understanding-db-schema --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/c0ntr0lledcha0s/understanding-db-schema .claude/skills/understanding-db-schema && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "understanding-db-schema" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/c0ntr0lledcha0s/understanding-db-schema into .claude/skills/understanding-db-schema/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "understanding-db-schema", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/c0ntr0lledcha0s/understanding-db-schemaType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill understanding-db-schema -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace understanding-db-schema --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/c0ntr0lledcha0s/understanding-db-schema .agents/skills/understanding-db-schema && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "understanding-db-schema" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/c0ntr0lledcha0s/understanding-db-schema into .agents/skills/understanding-db-schema/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "understanding-db-schema", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill understanding-db-schema -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace understanding-db-schema --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/c0ntr0lledcha0s/understanding-db-schema .cursor/skills/understanding-db-schema && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "understanding-db-schema" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/c0ntr0lledcha0s/understanding-db-schema into .cursor/skills/understanding-db-schema/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "understanding-db-schema", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/c0ntr0lledcha0s/understanding-db-schema--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill understanding-db-schema -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace understanding-db-schema --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/c0ntr0lledcha0s/understanding-db-schema .gemini/skills/understanding-db-schema && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "understanding-db-schema" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/c0ntr0lledcha0s/understanding-db-schema into .gemini/skills/understanding-db-schema/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "understanding-db-schema", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace understanding-db-schemaInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill understanding-db-schema -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/c0ntr0lledcha0s/understanding-db-schema .github/skills/understanding-db-schema && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "understanding-db-schema" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/c0ntr0lledcha0s/understanding-db-schema into .github/skills/understanding-db-schema/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "understanding-db-schema", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill understanding-db-schema -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace understanding-db-schema --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/c0ntr0lledcha0s/understanding-db-schema .opencode/skills/understanding-db-schema && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "understanding-db-schema" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/c0ntr0lledcha0s/understanding-db-schema into .opencode/skills/understanding-db-schema/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "understanding-db-schema", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
understanding-db-schema- GitHub stars
- 430
- Token cost
- ~1.5k tokens
- SKILL.md length
- 300 words
- Files
- 5 (incl. references, assets)
- Skills in repo
- 1,044
- Repo updated
- First seen
- Licence
- None found
At a glance
Deep expertise in Logseq's Datascript database schema. An agent skill from aiskillstore/marketplace.
- Works in 5 steps: Entity transformation: Properties →… → Schema dispatch: Validation dispatches… → Value validation: Individual values… → …
- Tasks that involve Database schema design
- SKILL.md covers When to Use This Skill, Datascript Foundation, Built-in Classes Hierarchy and Property Type System, plus 7 more sections
- Calls node
What it does
Understanding DB Schema is an agent skill from aiskillstore/marketplace. Deep expertise in Logseq's Datascript database schema. Auto-invokes when users ask about Logseq DB schema, Datascript attributes, built-in classes, property types, entity relationships, schema validation, or the node/block/page data model. Provides authoritative knowledge of the DB graph architecture.
Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files and assets (for example `references/built-in-classes.md` and `skill-report.json`).
It sits in Databases, covering Database schema design, Diagrams and Forms and validation. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Tasks that involve Database schema design
- Tasks that involve Diagrams
- Tasks that involve Forms and validation
Example prompts
- “/understanding-db-schema”
Requirements
- Pre-approved tools (allowed-tools): Read, Grep, Glob, WebFetch, WebSearch
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Entity transformation: Properties → [property-map value] tuples
- Schema dispatch: Validation dispatches on :logseq.property/type
- Value validation: Individual values checked against type schemas
- Cardinality handling: Automatic :many vs :one handling
- Transaction validation: validate-tx-report ensures integrity
What it can do on your machine
Read from SKILL.md and the folder at commit 755bc35. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGrepGlobWebFetchWebSearch
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
node
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
github.comdeepwiki.comdiscuss.logseq.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Understanding DB Schema loads about 1.5k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 82 tokens; SKILL.md has 300 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 300 words (~1,513 tokens).
- name
- understanding-db-schema
- allowed-tools
- Read, Grep, Glob, WebFetch, WebSearch
- version
- 1.0.0
Files
SKILL.md and 4 other files (references, assets) in skills/c0ntr0lledcha0s/understanding-db-schema of aiskillstore/marketplace.
- SKILL.md
- assets/class-template.edn
- assets/property-template.edn
- references/built-in-classes.md
- skill-report.json
Open the folder on GitHubat commit 755bc35
Compare with similar skills
Understanding DB Schema next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Understanding DB Schema this skillaiskillstore/marketplace | 430 | — | ~1.5k | Automated safety check: Pass | None | |
| Datamodellmnimbalyst/nimbalyst | 1.9k | — | ~713 | Automated safety check: Pass | MIT | |
| Entity ModelAI-Unified-Process/marketplace | 142 | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Data ModelingProrise-cool/Claude-Code-Multi-Agent | 305 | — | ~3.2k | Automated safety check: Pass | None | |
| Database Schema Designmohitagw15856/pm-claude-skills | 1.4k | — | ~3.9k | Automated safety check: Pass | MIT | |
| Drizzle Erdhiroppy/mf-dashboard | 418 | — | ~627 | Automated safety check: Pass | MIT |
Similar skills
Entity Model
AI-Unified-Process/marketplace
Creates entity model documents with Mermaid.js ER diagrams and attribute tables defining entities, relationships, data types, and validation rules.
Data Modeling
Prorise-cool/Claude-Code-Multi-Agent
Data modeling with Entity-Relationship Diagrams (ERDs), data dictionaries, and conceptual/logical/physical models.
Database Schema Design
mohitagw15856/pm-claude-skills
Document or design a database schema with entity relationships, table definitions, constraints, indexes, and access patterns.
Drizzle Erd
hiroppy/mf-dashboard
A skill your agent uses when needing to visualize database schema, generate ERD diagrams from Drizzle ORM schemas, or understand table relationships
Erd Studio Setup
liam-machine/erd-studio
Friendly, step-by-step setup for ERD Studio in an existing dbt project, for people who may be new to dbt or data modelling.
More from aiskillstore/marketplace
All 1,044 skills in this repoCode Stats
aiskillstore/marketplace
Analyze codebase with tokei (fast line counts by language) and difft (semantic AST-aware diffs).
Data Processing
aiskillstore/marketplace
Process JSON with jq and YAML/TOML with yq. An agent skill from aiskillstore/marketplace.
Doc Scanner
aiskillstore/marketplace
Scans for project documentation files (AGENTS.md, CLAUDE.md, GEMINI.md, COPILOT.md, CURSOR.md, WARP.md, and 15+ other formats) and synthesizes guidance.
File Search
aiskillstore/marketplace
Modern file and content search using fd, ripgrep (rg), and fzf.
Find Replace
aiskillstore/marketplace
Modern find-and-replace using sd (simpler than sed) and batch replacement patterns.
Project Planner
aiskillstore/marketplace
Detects stale project plans and suggests session commands. An agent skill from aiskillstore/marketplace.
Related
Categories
Questions about Understanding DB Schema
What does Understanding DB Schema do?
Deep expertise in Logseq's Datascript database schema. An agent skill from aiskillstore/marketplace. Understanding DB Schema is an agent skill from aiskillstore/marketplace. Deep expertise in Logseq's Datascript database schema.
When should I use Understanding DB Schema?
Understanding DB Schema fits situations like: tasks that involve Database schema design; tasks that involve Diagrams; tasks that involve Forms and validation.
How do I install Understanding DB Schema in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill understanding-db-schema -a claude-code`. Or copy the skill folder (skills/c0ntr0lledcha0s/understanding-db-schema in aiskillstore/marketplace) into .claude/skills/understanding-db-schema in your project. Claude Code loads it when a task matches its description.
How do I install Understanding DB Schema in Codex?
Run `npx skills add aiskillstore/marketplace --skill understanding-db-schema -a codex`. Or copy the skill folder (skills/c0ntr0lledcha0s/understanding-db-schema in aiskillstore/marketplace) into .agents/skills/understanding-db-schema in your project. Codex loads it when a task matches its description.
Can I use Understanding DB Schema in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill understanding-db-schema -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/understanding-db-schema, .gemini/skills/understanding-db-schema, .github/skills/understanding-db-schema and .opencode/skills/understanding-db-schema in your project.
What does Understanding DB Schema need to run?
Going by SKILL.md and its folder, Understanding DB Schema needs the command-line tools its instructions call (node). Its frontmatter pre-approves these tools: Read, Grep, Glob, WebFetch, WebSearch.
Does Understanding DB Schema access the network?
SKILL.md names 3 domains. As links in the text: github.com, deepwiki.com and discuss.logseq.com. This is read from the text; nothing was executed.
Is Understanding DB Schema safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Understanding DB Schema use?
No licence was found for Understanding DB Schema or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Understanding DB Schema use?
About 1.5k tokens (SKILL.md is roughly 6.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 732 tokens, read only when the agent opens those files.
What are the alternatives to Understanding DB Schema?
Skills that share tags, products or a category with Understanding DB Schema: Datamodellm (nimbalyst/nimbalyst, 1.9k stars), Entity Model (AI-Unified-Process/marketplace, 142 stars), Data Modeling (Prorise-cool/Claude-Code-Multi-Agent, 305 stars) and Database Schema Design (mohitagw15856/pm-claude-skills, 1.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Understanding DB Schema?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,044 skills in this directory. The repository was last updated on October 9, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.