Release history
ClickHouse/mcp-clickhouse releases
ClickHouse database integration with schema inspection and query capabilities
All releases
3 shown
v0.3.0
New feature
⚠ Upgrade required
- Set CLICKHOUSE_WRITE_ACCESS to enable write‑access mode with built‑in DROP/TRUNCATE protection
- Use CLICKHOUSE_MCP_MIDDLEWARE to inject custom middleware into the MCP server lifecycle
Notable features
- SNI override via CLICKHOUSE_SNI environment variable for proxy/load balancer connections
- Client config override through MCP Context session states enabling runtime connection switching
- Optional chdb dependency and lazy-load to reduce memory overhead on Windows
Full changelog
What's Changed
- SNI override support via
CLICKHOUSE_SNIenvironment variable for connections behind proxies or load balancers. (#127) - Lazy-load chdb to avoid ~80-100 MB memory overhead when the feature is disabled. (#144)
- Made chdb an optional dependency for Windows compatibility. (#145)
- Optional write access mode via
CLICKHOUSE_WRITE_ACCESSenvironment variable, with built-in DROP and TRUNCATE protection. (#93) - Client config override support through MCP Context session states, enabling dynamic connection switching at runtime. (#115)
- Custom middleware injection via
CLICKHOUSE_MCP_MIDDLEWAREenvironment variable for hooking into the MCP server lifecycle. Includes an example middleware module. (#114)
Full Changelog: https://github.com/ClickHouse/mcp-clickhouse/compare/v0.2.0...v0.3.0
v0.2.0
New feature
Notable features
- Authentication added for HTTP and Server-Sent Events (SSE) transports
Full changelog
What's Changed
- Add authentication support for HTTP and SSE transports by @joe-clickhouse in https://github.com/ClickHouse/mcp-clickhouse/pull/113
Full Changelog: https://github.com/ClickHouse/mcp-clickhouse/compare/v0.1.13...v0.2.0