What this skill does
Writes, reviews, and optimizes SQL queries; designs schemas, indexes, and constraints; plans migrations for any relational database. Use when a query is slow, EXPLAIN shows a sequential scan, or an index is ignored; when rows come back duplicated, missing, or with inflated totals after a JOIN; on deadlocks, lock timeouts, "too many connections", or transactions that never commit; when designing tables, keys, and column types, normalizing or denormalizing a model, or deciding between a JSON column and real columns; for ALTER TABLE on a live table, expand-migrate-contract rollouts, backups and restores, replication lag, connection pooling, partitioning, bulk CSV imports, and moving data between engines; for window functions, CTEs, keyset pagination, upserts, full-text search, multi-tenancy, row-level security, and timezone handling in MySQL, SQLite, MariaDB, or SQL Server. Not for PostgreSQL server internals such as vacuum tuning and work_mem sizing, and not for ORM schema modeling inside a framework.
SQL is part of the Developer Tools category — developer tools that help your agent write, review, debug, and ship code. You can install it on its own or alongside other developer tools skills from the OpenClaw catalog.
How to install SQL
The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:
- Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
- Open the in-app Skills panel.
- Search for
sqland click Install. - The skill activates automatically when an incoming message matches its description.
Install from the command line
If you already run the OpenClaw CLI, add SQL with a single command:
openclaw skills add sql
This pulls sql from ClawHub and installs it into ~/.openclaw/skills/sql/. Restart the OpenClaw gateway afterwards so the new skill is discovered.
How to use SQL
Once installed, SQL activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.
Manual install (advanced)
If you prefer manual installation:
- Click the Download .zip button above to grab
sql-1.0.4.zipdirectly from our S3 mirror. - Unzip into
~/.openclaw/skills/sql/(create the directory if it does not exist). - Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.
Frequently asked questions
How do I install SQL?
Install SQL in the OpenClaw Easy desktop app by opening the Skills panel, searching for sql, and clicking Install. From a terminal you can run: openclaw skills add sql. Either way the skill is placed in ~/.openclaw/skills/sql/.
Is SQL free?
Yes. SQL is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.
What does SQL do?
Writes, reviews, and optimizes SQL queries; designs schemas, indexes, and constraints; plans migrations for any relational database.
Related: more developer tools skills
If SQL looks useful, you may also want to check out other developer tools skills in the OpenClaw catalog:
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Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models