# Mirrord DB Branching (agent skill)

> Mirrord DB Branching is an agent skill (a SKILL.md file) from metalbear-co/mirrord. It helps users configure mirrord.json for database branching, enabling isolated database copies for safe development and testing. It works with Claude Code, Codex, Cursor, Gemini CLI and GitHub Copilot and has 5,383 GitHub stars across a repository of 4 listed skills.

Helps users configure mirrord.json for database branching, enabling isolated database copies for safe development and testing. Use when the user wants to set up MySQL, MariaDB, PostgreSQL, MSSQL, MongoDB, Redis, DynamoDB, ClickHouse, Google Spanner, Amazon S3, turbopuffer, or generic branches, configure copy modes, connection sources, schema migrations, IAM authentication, or manage database branches.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/metalbear-co/mirrord |
| Skill path | mirrord/mcp/corpus/skills/mirrord-db-branching/SKILL.md |
| Skill name | mirrord-db-branching |
| GitHub stars | 5,383 |
| Installs on skills.sh | not listed |
| License | MIT |
| Skills in repo | 4 |
| Plugin marketplace | no |
| Official | yes |
| Works with | Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot |
| Category | Security |
| Last commit | Oct 25, 2026 |

## When it triggers

- Use when the user wants to set up MySQL, MariaDB, PostgreSQL, MSSQL, MongoDB, Redis, DynamoDB, ClickHouse, Google Spanner, Amazon S3, turbopuffer, or generic branches, configure copy modes, connection sources, schema migrations, IAM authent

## Add this skill

### Claude Code

```sh
git clone --depth 1 https://github.com/metalbear-co/mirrord.git
cp -r mirrord/mirrord/mcp/corpus/skills/mirrord-db-branching ~/.claude/skills/mirrord-db-branching   # personal, or .claude/skills in a project
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/metalbear-co/mirrord.git
cp -r mirrord/mirrord/mcp/corpus/skills/mirrord-db-branching .agents/skills/mirrord-db-branching   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/metalbear-co/mirrord.git
cp -r mirrord/mirrord/mcp/corpus/skills/mirrord-db-branching .cursor/skills/mirrord-db-branching   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

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Canonical page: https://appsgit.com/skills/metalbear-co-mirrord-db-branching
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