Mirrord DB Branching
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.
github.com/metalbear-co/mirrord/mirrord/mcp/corpus/skills/mirrord-db-branching (opens in a new tab)
Data as of from the GitHub API; description from the skill's SKILL.md. Report an error
Add this skill
Claude
Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):
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 projectIn the Claude apps, zip the mirrord-db-branching folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).
ChatGPT / Codex
Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:
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 projectsStandalone skills also load in the ChatGPT desktop app.
Cursor
Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:
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 projectsSource (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)
What this skill does
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.
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
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How do I install the Mirrord DB Branching skill?
Copy the mirrord-db-branching folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.
Is the Mirrord DB Branching skill free?
Yes. The repository is open source under the MIT license. The skill mentions an API key or token for an external service, which may need its own account.
Is Mirrord DB Branching maintained?
The repository's most recent commit was on Oct 25, 2026. Its latest release is 3.279.1. appsgit only lists skills from repositories with a commit in the last six months.