Loading skill
Install any skill in seconds. Free to start, no credit card required.
Get Started Free →evolution-foundation/db-mysql
Query MySQL / MariaDB databases configured in .env (DB_MYSQL_N_*).
Passed 17 of 20 test cases with the skill, and 8 of 20 without it.
and 8 more in the full report
11 fixed9 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
Executing database health checks yields the error code `driver_missing`. What terminal command should be executed to install the required pure-Python MySQL driver?
| Checked | Without skill | With skill |
|---|---|---|
| Recommends executing uv pip install pymysql | Missed | Passed |
The instructions your model reads when the skill loads.
Query MySQL / MariaDB databases declared in .env. Connections follow the same numbered pattern as SOCIAL_YOUTUBE_N_* / SOCIAL_INSTAGRAM_N_* — one block per database, labelled for humans, picked by label or index at call time.
Add a block to .env (gitignored). Increment the index per connection:
# ── MySQL: orders-dev ────────────────────────────────
DB_MYSQL_1_LABEL=orders-dev
DB_MYSQL_1_HOST=mysql.dev.internal
DB_MYSQL_1_PORT=3306
DB_MYSQL_1_DATABASE=orders
DB_MYSQL_1_USER=agent_readonly
DB_MYSQL_1_PASSWORD=... # raw; .env is gitignored
# DB_MYSQL_1_SSL_CA_PATH=/path/ca.pem # optional, enables TLS verification
# DB_MYSQL_1_ALLOW_WRITE=false # default false
# DB_MYSQL_1_QUERY_TIMEOUT=30 # seconds, default 30
# DB_MYSQL_1_MAX_ROWS=1000 # default 1000
Alternative — full DSN instead of components (DSN wins when both are set):
DB_MYSQL_2_LABEL=analytics-prod
DB_MYSQL_2_DSN=mysql://agent_ro:***@analytics.prod.internal:3306/analytics
LABEL is always required — it's how agents pick the connection.
All commands output a single JSON line on stdout (safe to pipe). Errors go to stderr as JSON and exit non-zero.
python3 .claude/skills/db-mysql/scripts/db_client.py accounts
test cases passed, vs 8 / 20 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.