ClickHouse with OHarness
- Conector
- Plugin
- Bases de datos
Query and model analytical data in ClickHouse. OHarness works with ClickHouse out of the box — sign in once in your browser and its tools are in every session.
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What you get
| MCP connector | Query and explore your ClickHouse Cloud services. Remote, over streamable HTTP at https://mcp.clickhouse.cloud/mcp. |
| Plugin | 2 skills and 1 MCP server. MCP servers: clickhouse. |
| Published by | ClickHouse |
| Pinned source | ClickHouse/clickhouse-claude-code-plugin@652664c |
How it signs in
Through your browser, the first time a session uses it. The server answers with a sign-in challenge, OHarness discovers ClickHouse’s authorization server and registers itself there on the spot, and the tokens land in ~/.oharness/auth.json, readable only by you. Nothing to paste, and nothing stored by us.
Try it
Once ClickHouse is connected, a first prompt to see it work:
Using ClickHouse, list the tables in my project and draft a query for last week's new sign-ups.
Adding it
- Download OHarness for the Mac, or install the CLI anywhere Node runs.
- In the composer, open the + menu and find ClickHouse under Connectors or Plugins.
- Pick it and sign in when the browser opens. Its tools are available from the next turn.
Links
- ClickHouse website
- ClickHouse MCP server documentation
- Plugin homepage
- The pinned source, ClickHouse/clickhouse-claude-code-plugin@652664c
Common questions
Does OHarness work with ClickHouse?
Yes. ClickHouse ships in OHarness as both an MCP connector and a plugin, so it is in the menu on first launch with nothing to look up.
How does the ClickHouse connector sign in?
Through your browser. The first request is answered with a sign-in challenge, OHarness registers itself with ClickHouse's authorization server on the spot, and the tokens are kept on your machine in auth.json, readable only by you. There is no key to paste.
What does the ClickHouse plugin install?
2 skills and 1 MCP server. It is installed from ClickHouse/clickhouse-claude-code-plugin at commit 652664c, the exact version OHarness was checked against, rather than whatever is on a branch today.
Is OHarness affiliated with ClickHouse?
No. OHarness works with ClickHouse through its public MCP server; ClickHouse and its logo belong to ClickHouse.
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ClickHouse and its logo belong to ClickHouse. Listed because OHarness works with it, not because ClickHouse endorses OHarness.
Use ClickHouse from OHarness
The same ClickHouse tools in every session, whichever of the model providers is underneath.