What is the key difference between Postgres MCP and Pgvector?

Postgres MCP belongs to the Databases category with local stdio execution, while Pgvector belongs to the Databases category with local stdio execution.

How do I install Postgres MCP or Pgvector in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Postgres MCP and Pgvector free or paid?

Postgres MCP operates under a Free / Open Source model (No auth required). Pgvector operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Postgres MCP lists 0 tools with 0 views and 223 GitHub stars. Pgvector lists 7 tools with 0 views and 0 GitHub stars.

Can I use both Postgres MCP and Pgvector together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Postgres MCP vs Pgvector

In-depth architectural comparison of the Postgres MCP and Pgvector 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

Postgres MCP

Databases · Local stdio

Quality: 35/100 (Fair) | Auth: No auth required

Pgvector

Databases · Local stdio

Quality: 55/100 (Good) | Auth: No auth required

Verdict Summary: Choose Postgres MCP if you need specialized Databases tools running via a local process. Choose Pgvector 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 Postgres MCP when:

You need dedicated capabilities in the Databases domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Postgres MCP Details

Choose Pgvector when:

You need dedicated capabilities in the Databases domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: list_vector_tables, describe_vector_table, similarity_search.

Explore Pgvector Details

Feature & Specification Comparison

Specification	Postgres MCP Databases	P Pgvector Databases
Summary	Enterprise PostgreSQL MCP server with NL queries, hybrid search (pgvector+BM25), and web UI	Similarity search, hybrid search, and index management for pgvector-backed PostgreSQL tables
Category & Scope	Databases	Databases
Quality signal

Tools & Capabilities Breakdown

Postgres MCP Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Pgvector Tools (7)

list_vector_tables

Discover every `vector` column in the database, with its dimensionality

describe_vector_table

Columns, indexes, and approximate row count for a table

similarity_search

k-NN search over a vector column (cosine / L2 / inner product), with structured metadata filters

hybrid_search

Weighted blend of vector similarity and Postgres full-text search (`ts_rank_cd`)

upsert_embedding

Insert or update a row's embedding + metadata

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).

Postgres MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "postgres-mcp-2": {
      "command": "npx",
      "args": [
        "-y",
        "postgres-mcp-2"
      ]
    }
  }
}

Pgvector Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "pgvector": {
      "command": "uvx",
      "args": [
        "mcp-server-pgvector"
      ]
    }
  }
}

Frequently Asked Questions

Postgres MCP is categorized under Databases and uses a local stdio subprocess. In contrast, Pgvector belongs to Databases using local stdio subprocess. Select Postgres MCP when you need capabilities focused on databases and Pgvector when you require tools for databases.

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