Nlqueries vs Universal Db MCP
A side-by-side look at the Nlqueries and Universal Db MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Nlqueries for databases work as a local process; choose Universal Db MCP for databases as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Nlqueries when
- You need dedicated capabilities in the Databases domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
ANTHROPIC_API_KEY, OPENAI_API_KEY, QDRANT_API_KEY, NLQ_MCP_STATIC_TOKEN.
Choose Universal Db MCP when
- You need dedicated capabilities in the Databases domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
POSTGRES_URI, SQLITE_PATH, MYSQL_URI, DUCKDB_PATH, ALLOW_DESTRUCTIVE, MAX_RESULT_ROWS, QUERY_TIMEOUT, RATE_LIMIT_RPM. - You want tools like
query, schema, explain.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Databases | Databases |
| Quality signal | 49/100 · Fair | 53/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | ANTHROPIC_API_KEYOPENAI_API_KEYQDRANT_API_KEY |
Tools & capabilities
Nlqueries tools
No tool names declared yet. Check the project README from the listing page.
Universal Db MCP tools 8
queryExecute a SQL query against the database. Supports parameterized queries for injection safety. In read-only mode, destructive operations (INSERT, UPDATE, DELETE, DROP, etc.) are blocked.schemaGet database schema information: tables, columns, types, and constraints.explainGet query execution plan without running the query.healthCheck database connection health and get server version info.query_historyGet recent query execution history (most recent first).snapshot_schemaTake a snapshot of the current database schema for later drift detection.schema_diffCompare the current schema against the last snapshot taken with snapshot_schema.list_databasesList all configured databases and their connection status. Returns: JSON with list of databases including key, type, database name, and connection status.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Nlqueries
{
"mcpServers": {
"nlqueries-nlqueries": {
"command": "uvx",
"args": [
"nlqueries-core"
],
"env": {
"ANTHROPIC_API_KEY": "YOUR_ANTHROPIC_API_KEY_HERE",
"OPENAI_API_KEY": "YOUR_OPENAI_API_KEY_HERE",
"QDRANT_API_KEY": "YOUR_QDRANT_API_KEY_HERE",
"NLQ_MCP_STATIC_TOKEN": "YOUR_NLQ_MCP_STATIC_TOKEN_HERE"
}
}
}
}
Universal Db MCP
{
"mcpServers": {
"universal-db-mcp": {
"command": "uvx",
"args": [
"universal-db-mcp"
],
"env": {
"POSTGRES_URI": "YOUR_POSTGRES_URI_HERE",
"SQLITE_PATH": "YOUR_SQLITE_PATH_HERE",
"MYSQL_URI": "YOUR_MYSQL_URI_HERE",
"DUCKDB_PATH": "YOUR_DUCKDB_PATH_HERE",
"ALLOW_DESTRUCTIVE": "YOUR_ALLOW_DESTRUCTIVE_HERE",
"MAX_RESULT_ROWS": "YOUR_MAX_RESULT_ROWS_HERE",
"QUERY_TIMEOUT": "YOUR_QUERY_TIMEOUT_HERE",
"RATE_LIMIT_RPM": "YOUR_RATE_LIMIT_RPM_HERE"
}
}
}
}
Frequently asked questions
Nlqueries is categorized under Databases and uses a local stdio subprocess. Universal Db MCP belongs to Databases and uses a local stdio subprocess. Pick Nlqueries for databases work and Universal Db MCP for databases.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Nlqueries has no declared pricing — check the project's own site. Universal Db MCP has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add nlqueries-nlqueries and universal-db-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Nlqueries has a quality signal of 49/100 (Fair) with 1 views, 0 installs and 4 GitHub stars. Universal Db MCP has 53/100 (Good) with 3 views, 0 installs and 1 GitHub stars.