Read-only-by-default MCP server for one or many ClickHouse clusters: schema discovery, SELECT-only queries, EXPLAIN analysis, opt-in writes.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add clickhouse --env MCP_CLICKHOUSE_DSN='<MCP_CLICKHOUSE_DSN>' -- uvx mcp-clickhousex~/.codex/config.toml
[mcp_servers.clickhouse]
command = "uvx"
args = ["mcp-clickhousex"]
env = { MCP_CLICKHOUSE_DSN = "<MCP_CLICKHOUSE_DSN>" }
# codex mcp add clickhouse --env MCP_CLICKHOUSE_DSN='<MCP_CLICKHOUSE_DSN>' -- uvx mcp-clickhousex~/.cursor/mcp.json
{
"mcpServers": {
"clickhouse": {
"command": "uvx",
"args": [
"mcp-clickhousex"
],
"env": {
"MCP_CLICKHOUSE_DSN": "<MCP_CLICKHOUSE_DSN>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"clickhouse": {
"type": "stdio",
"command": "uvx",
"args": [
"mcp-clickhousex"
],
"env": {
"MCP_CLICKHOUSE_DSN": "<MCP_CLICKHOUSE_DSN>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"clickhouse": {
"command": "uvx",
"args": [
"mcp-clickhousex"
],
"env": {
"MCP_CLICKHOUSE_DSN": "<MCP_CLICKHOUSE_DSN>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"clickhouse": {
"command": "uvx",
"args": [
"mcp-clickhousex"
],
"env": {
"MCP_CLICKHOUSE_DSN": "<MCP_CLICKHOUSE_DSN>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"clickhouse": {
"command": "uvx",
"args": [
"mcp-clickhousex"
],
"env": {
"MCP_CLICKHOUSE_DSN": "<MCP_CLICKHOUSE_DSN>"
}
}
}
}Environment variables
MCP_CLICKHOUSE_DSN
Replace the placeholders with your own credentials and keep them out of version control.