In-depth architectural comparison of the MCP Clickhouse and Microsoft SQL Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
MCP Clickhouse
Databases · Local stdio
Quality: 65/100 (Great) | Auth: other
Microsoft SQL Server
Databases · Local stdio
Quality: 53/100 (Good) | Auth: No auth required
Verdict Summary: Choose MCP Clickhouse if you need specialized Databases tools running via a local process. Choose Microsoft SQL Server if your workspace requires Databases integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose MCP Clickhouse when:
You need dedicated capabilities in the Databases domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: other (Free / Open Source).
List available ClickHouse tables in a database, including schema, comment,
row count, and column count.
Args:
database: The database to list tables from
like: Optional LIKE pattern to filter table names
not_like: Optional NOT LIKE pattern to exclude table names
page_token: Token for pagination, obtained from a previous call
page_size: Number of tables to return per page (default: 50)
include_detailed_columns: Whether to include detailed column metadata (default: True).
When False, the columns array will be empty but create_table_query still contains
all column information. This reduces payload size for large schemas.
Returns:
A JSON-encoded string of an object containing:
- tables: List of table information (as dictionaries)
- next_page_token: Token for the next page, or None if no more pages
- total_tables: Total number of tables matching the filters
run_query
Execute SQL queries in ClickHouse. Queries run in read-only mode by default. Set CLICKHOUSE_ALLOW_WRITE_ACCESS=true to allow DDL and DML operations. Set CLICKHOUSE_ALLOW_DROP=true to additionally allow destructive operations (DROP, TRUNCATE).
Microsoft SQL Server Tools (7)
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
MCP Clickhouse is categorized under Databases and uses a local stdio subprocess. In contrast, Microsoft SQL Server belongs to Databases using local stdio subprocess. Select MCP Clickhouse when you need capabilities focused on databases and Microsoft SQL Server when you require tools for databases.
List configured connection profiles. Call first when picking a non-default profile.
get_server_properties
Get server properties and execution limits (timeouts, row caps, guardrails).
list_objects
List catalog metadata. `kind=catalog`: databases; `schema`: schemas; `relation`: tables/views; `routine`: procedures/functions. `catalog` omitted → active catalog (ignored for `kind=catalog`). `schema` omission depends on kind.
get_object
Get metadata for one relation or routine. Use `list_objects` to resolve names. Returns empty detail payloads if `includes` is null.
run_query
Execute read-only T-SQL SELECT; only SELECT allowed (no DML/DDL). Returns results as CSV in the `data` field (inline) or a snapshot resource URI when `snapshot=true`. Inline limit: 500 rows (hard ceiling 1000). Snapshot limit: 10 000 rows. Prefer `analyze_query` for plan tuning.
analyze_query
Analyze execution plan for a read-only SELECT. Returns compact JSON summary (cost, operators, cardinality, warnings, indexes, waits, stats). Fetch full XML from `plan_uri`; does not return result rows.
run_command
Execute write T-SQL (DDL/DML). Rejected unless the target `profile` sets `AllowWrite=true` (off by default). Caller manages transactions. Returns `rows_affected` (−1 for DDL) and server `messages`. Marked destructive; intended for human-supervised use.