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db

Query the database — list schemas, tables, describe a table, or run SQL. Accepts arguments like schemas, tables, describe <table>, or raw SQL.

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Works withPostgreSQLMySQL
See how to install

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  • SKILL.md1.2 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

DB Skill

Query the database in non-interactive mode.

Usage

/db schemas              # List available schemas
/db tables               # List all tables
/db describe users       # Describe the users table
/db SELECT COUNT(*) FROM orders  # Run raw SQL

Instructions

Determine action from $ARGUMENTS:

ArgumentAction
schemas{{DB_LIST_SCHEMAS_CMD}}
tables{{DB_LIST_TABLES_CMD}}
describe <table>{{DB_DESCRIBE_CMD}} <table>
<raw-sql>{{DB_QUERY_CMD}} "<sql>"

⚠️ Always use non-interactive mode:

  • PostgreSQL: psql -c "SQL" | cat
  • MySQL: mysql -e "SQL" | cat
  • SQLite: sqlite3 db.sqlite "SQL"
  • MongoDB: mongosh --eval "db.collection.find()" --quiet

Rules:

  • Read claude/build.md for the DB connection string and credentials
  • NEVER run destructive SQL (DROP, TRUNCATE, DELETE without WHERE) without explicit user confirmation
  • NEVER commit credentials — always use env var references
  • For $DB_PATH (SQLite): check project config files for the actual path

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