Agent skill

Database Architect

Full pipeline for DB design. An agent skill from revfactory/harness-100.

Apache-2.0Auto-check passedDatabases

Install Database Architect

skills CLI

$ npx skills add revfactory/harness-100 --skill database-architect -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install revfactory/harness-100 database-architect --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .claude/skills && cp -r skills-src/en/19-database-architect/.claude/skills/database-architect .claude/skills/database-architect && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "database-architect" agent skill from https://github.com/revfactory/harness-100/tree/main/en/19-database-architect/.claude/skills/database-architect into .claude/skills/database-architect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "database-architect", 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

$skill-installer install https://github.com/revfactory/harness-100/tree/main/en/19-database-architect/.claude/skills/database-architect

Type 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.

skills CLI

$ npx skills add revfactory/harness-100 --skill database-architect -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install revfactory/harness-100 database-architect --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .agents/skills && cp -r skills-src/en/19-database-architect/.claude/skills/database-architect .agents/skills/database-architect && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "database-architect" agent skill from https://github.com/revfactory/harness-100/tree/main/en/19-database-architect/.claude/skills/database-architect into .agents/skills/database-architect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "database-architect", 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.

skills CLI

$ npx skills add revfactory/harness-100 --skill database-architect -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install revfactory/harness-100 database-architect --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/en/19-database-architect/.claude/skills/database-architect .cursor/skills/database-architect && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "database-architect" agent skill from https://github.com/revfactory/harness-100/tree/main/en/19-database-architect/.claude/skills/database-architect into .cursor/skills/database-architect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "database-architect", 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

$ gemini skills install https://github.com/revfactory/harness-100.git --path en/19-database-architect/.claude/skills/database-architect

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add revfactory/harness-100 --skill database-architect -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install revfactory/harness-100 database-architect --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/en/19-database-architect/.claude/skills/database-architect .gemini/skills/database-architect && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "database-architect" agent skill from https://github.com/revfactory/harness-100/tree/main/en/19-database-architect/.claude/skills/database-architect into .gemini/skills/database-architect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "database-architect", 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.

GitHub CLI

$ gh skill install revfactory/harness-100 database-architect

Installs 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).

skills CLI

$ npx skills add revfactory/harness-100 --skill database-architect -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .github/skills && cp -r skills-src/en/19-database-architect/.claude/skills/database-architect .github/skills/database-architect && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "database-architect" agent skill from https://github.com/revfactory/harness-100/tree/main/en/19-database-architect/.claude/skills/database-architect into .github/skills/database-architect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "database-architect", 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.

skills CLI

$ npx skills add revfactory/harness-100 --skill database-architect -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install revfactory/harness-100 database-architect --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/en/19-database-architect/.claude/skills/database-architect .opencode/skills/database-architect && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "database-architect" agent skill from https://github.com/revfactory/harness-100/tree/main/en/19-database-architect/.claude/skills/database-architect into .opencode/skills/database-architect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "database-architect", 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: database-architect
GitHub stars: 1.3k
Token cost: ~1.8k tokens
SKILL.md length: 677 words
Files: 1
Skills in repo: 464
Repo updated: Mar 22, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Full pipeline for DB design. An agent skill from revfactory/harness-100.

Works in 3 steps: Preparation (Performed directly by the… → Team Assembly and Execution → Integration and Final Artifacts
Any database design task including design a database
SKILL.md covers Execution Mode, Agent Composition, Workflow and Mode by Task Scale, plus 4 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Database Architect is an agent skill from revfactory/harness-100. Full pipeline for DB design. An agent team collaborates to perform data modeling, migration, indexing, query optimization, and security verification. Use this skill for any database design task including 'design a database', 'database modeling', 'table design', 'ERD', 'migration', 'query optimization', 'index design', 'SQL schema', 'PostgreSQL design', 'MySQL design', etc. Also supports optimization and security auditing for existing schemas. Note: actual DB server installation/operation, cloud infrastructure…

Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Databases, covering Database schema design, Query optimization and SQL. It works with SQL, MySQL and PostgreSQL. The licence is Apache-2.0.

When your agent uses it

Any database design task including design a database
Database modeling
Query optimization
PostgreSQL design

Example prompts

“design a database”
“database modeling”
“table design”
“/database-architect”

Workflow steps

3 steps, taken from the step headings in SKILL.md.

Preparation (Performed directly by the orchestrator)
Team Assembly and Execution
Integration and Final Artifacts

What it can do on your machine

Read from SKILL.md and the folder at commit 8e8d35c. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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

Database Architect loads about 1.8k tokens when it runs. Until then it costs about 154 tokens; SKILL.md has 677 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~154
When it runs · the whole SKILL.md, loaded when a task matches: ~1.8k

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

The full file from revfactory/harness-100 at commit 8e8d35c, republished under its Apache-2.0 licence (© revfactory). 677 words, ~1,766 tokens.

Download SKILL.mdSave it as .claude/skills/database-architect/SKILL.md (or your agent's skills folder).

name: database-architect
description: Full pipeline for DB design. An agent team collaborates to perform data modeling, migration, indexing, query optimization, and security verification. Use this skill for any database design task including 'design a database', 'database modeling', 'table design', 'ERD', 'migration', 'query optimization', 'index design', 'SQL schema', 'PostgreSQL design', 'MySQL design', etc. Also supports optimization and security auditing for existing schemas. Note: actual DB server installation/operation, cloud infrastructure provisioning, and monitoring dashboard setup are outside the scope of this skill.

Database Architect — DB Design Full Pipeline

An agent team collaborates to perform data modeling, migration, indexing, query optimization, and security verification in a single pass.

Execution Mode

Agent Team — 5 members communicate directly via SendMessage and cross-validate each other's work.

Agent Composition

Agent	File	Role	Type
data-modeler	`.claude/agents/data-modeler.md`	ERD, normalization, relationship design	general-purpose
migration-manager	`.claude/agents/migration-manager.md`	DDL, version control, rollback	general-purpose
performance-analyst	`.claude/agents/performance-analyst.md`	Indexing, query optimization	general-purpose
security-auditor	`.claude/agents/security-auditor.md`	Access control, encryption, auditing	general-purpose
integration-reviewer	`.claude/agents/integration-reviewer.md`	Alignment, operational readiness verification	general-purpose

Workflow

Phase 1: Preparation (Performed directly by the orchestrator)

Extract from user input:
- Domain: What service is the DB for
- DBMS: PostgreSQL / MySQL / MongoDB / DynamoDB
- Core Entities: Primary data subjects
- Expected Scale (optional): Row counts, TPS
- Existing Files (optional): Existing schemas, ERDs, SQL, etc.
Create the _workspace/ directory at the project root
Organize the input and save to _workspace/00_input.md
If existing files are provided, copy them to _workspace/ and skip the corresponding phase
Determine the execution mode based on the scope of the request

Phase 2: Team Assembly and Execution

Order	Task	Owner	Dependencies	Artifact
1	Data Modeling	data-modeler	None	`_workspace/01_data_model.md`
2	Migration Generation	migration-manager	Task 1	`_workspace/02_migration.sql`, `02_migration_plan.md`
3a	Performance Optimization	performance-analyst	Tasks 1, 2	`_workspace/03_performance.md`
3b	Security Verification	security-auditor	Tasks 1, 2	`_workspace/04_security.md`
4	Integration Review	integration-reviewer	Tasks 2, 3a, 3b	`_workspace/05_review_report.md`

Tasks 3a (performance) and 3b (security) are executed in parallel.

Inter-team communication flow:

data-modeler completes -> Delivers DDL basis to migration-manager, access patterns to performance-analyst, sensitive data to security-auditor
migration-manager completes -> Delivers index DDL to performance-analyst, permission DDL to security-auditor
performance-analyst <-> security-auditor: Mutually verify that performance optimizations do not compromise security
integration-reviewer cross-validates all artifacts. When 🔴 must-fix issues are found, requests revisions from the relevant agent -> rework -> re-verify (up to 2 rounds)

Phase 3: Integration and Final Artifacts

Organize the final artifacts based on the review report:

Verify all files in _workspace/
Confirm that all 🔴 must-fix items from the review report have been addressed
Report the final summary to the user

Mode by Task Scale

User Request Pattern	Execution Mode	Agents Deployed
"Design a database", "full design"	Full Pipeline	All 5 agents
"Just draw the ERD", "table design only"	Modeling Mode	data-modeler + integration-reviewer
"Optimize this schema" (existing SQL)	Optimization Mode	performance-analyst + integration-reviewer
"DB security audit" (existing DB)	Security Mode	security-auditor + integration-reviewer
"Review this schema"	Review Mode	integration-reviewer only

Leveraging existing files: If the user provides schemas, ERDs, or other existing files, skip the corresponding steps.

Show full SKILL.md (271 more words)Show less

Data Transfer Protocol

Strategy	Method	Purpose
File-based	`_workspace/` directory	Store and share primary artifacts
Message-based	SendMessage	Real-time delivery of key information, revision requests
Task-based	TaskCreate/TaskUpdate	Progress tracking, dependency management

File naming convention: {order}_{agent}_{artifact}.{extension}

Error Handling

Error Type	Strategy
DBMS not specified	Default to PostgreSQL; add compatibility notes for other DBMSs
Insufficient domain information	Data modeler starts with common patterns; document assumptions
Agent failure	Retry once -> If still fails, proceed without that artifact; note the omission in the review report
🔴 found during review	Request revision from the relevant agent -> rework -> re-verify (up to 2 rounds)
Existing schema parsing failure	Manually analyze and reconstruct the data model

Test Scenarios

Normal Flow

Prompt: "Design a PostgreSQL database for an e-commerce platform. I need user, product, order, payment, and review tables. Expecting 100K orders per day" Expected Result:

Model: 5 core tables + junction tables, 3NF normalization, ERD
Migration: Sequential DDL + rollback scripts + seed data
Performance: Index strategy, key query optimization, partitioning design
Security: RBAC, PII encryption, audit logging, backup strategy
Review: All items in the alignment matrix verified

Existing File Flow

Prompt: "Optimize the performance of this SQL schema" + SQL file Expected Result:

Copy existing schema to _workspace/02_migration.sql
Optimization mode: deploy performance-analyst + integration-reviewer
Skip data-modeler, migration-manager, security-auditor

Error Flow

Prompt: "Design a database, blog platform" Expected Result:

Scale/DBMS unknown -> data-modeler infers PostgreSQL + standard blog entities (Post, User, Comment, Tag)
Execute in full pipeline mode
Review report notes "design based on inferred requirements"

Agent Extension Skills

Extension skills that enhance each agent's domain expertise:

Skill	Target Agent	Role
`normalization-patterns`	data-modeler	1NF-BCNF identification, denormalization strategies, domain-specific ERD templates
`query-optimization-catalog`	performance-analyst	Index strategies, EXPLAIN analysis, N+1 resolution, partitioning

Files

Just SKILL.md in en/19-database-architect/.claude/skills/database-architect of revfactory/harness-100.

Open the folder on GitHubat commit 8e8d35c

Compare with similar skills

Database Architect 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.

Database Architect compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Database Architect this skillrevfactory/harness-100	1.3k	—	~1.8k	Automated safety check: Pass	Apache-2.0	6 mo ago
SQL ProJeffallan/claude-skills	12k	—	~1.3k	Automated safety check: Pass	MIT	4 days ago
Agent SQL Proxiaoyuge886/aigc	198	—	~315	Automated safety check: Pass	MIT	2 mo ago
SQL Expertaiskillstore/marketplace	430	—	~3.4k	Automated safety check: Pass	None	today
SQL ToolkitLeoYeAI/openclaw-master-skills	2.2k	—	~3k	Automated safety check: Pass	MIT	2 mo ago
Golang Databaseunxed/f4	240	2 repos	~2.9k	Automated safety check: Pass	MIT	today

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Questions about Database Architect

What does Database Architect do?

Full pipeline for DB design. An agent skill from revfactory/harness-100. Database Architect is an agent skill from revfactory/harness-100. Full pipeline for DB design.

When should I use Database Architect?

Database Architect fits situations like: any database design task including design a database; database modeling; query optimization; postgreSQL design.

How do I install Database Architect in Claude Code?

Run `npx skills add revfactory/harness-100 --skill database-architect -a claude-code`. Or copy the skill folder (en/19-database-architect/.claude/skills/database-architect in revfactory/harness-100) into .claude/skills/database-architect in your project. Claude Code loads it when a task matches its description.

How do I install Database Architect in Codex?

Run `npx skills add revfactory/harness-100 --skill database-architect -a codex`. Or copy the skill folder (en/19-database-architect/.claude/skills/database-architect in revfactory/harness-100) into .agents/skills/database-architect in your project. Codex loads it when a task matches its description.

Can I use Database Architect 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 revfactory/harness-100 --skill database-architect -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/database-architect, .gemini/skills/database-architect, .github/skills/database-architect and .opencode/skills/database-architect in your project.

What does Database Architect need to run?

SKILL.md names no scripts, command-line tools or credentials: Database Architect is instructions for the agent only.

Does Database Architect access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Database Architect 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 Database Architect use?

Database Architect is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Database Architect use?

About 1.8k tokens (SKILL.md is roughly 7.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Database Architect?

Skills that share tags, products or a category with Database Architect: SQL Pro (Jeffallan/claude-skills, 12k stars), Agent SQL Pro (xiaoyuge886/aigc, 198 stars), SQL Expert (aiskillstore/marketplace, 430 stars) and SQL Toolkit (LeoYeAI/openclaw-master-skills, 2.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Database Architect?

revfactory (a GitHub user) maintains it in revfactory/harness-100, which has 1,290 GitHub stars. The repository holds 464 skills in this directory. The repository was last updated on March 22, 2026.

Source: revfactory/harness-100 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Database Architect

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Database Architect — DB Design Full Pipeline

Execution Mode

Agent Composition

Workflow

Phase 1: Preparation (Performed directly by the orchestrator)

Phase 2: Team Assembly and Execution

Phase 3: Integration and Final Artifacts

Mode by Task Scale

Data Transfer Protocol

Error Handling

Test Scenarios

Normal Flow

Existing File Flow

Error Flow

Agent Extension Skills

Files

Compare with similar skills

Similar skills

More from revfactory/harness-100

Related

Questions about Database Architect