pgvector-mcp-server

Provides an MCP (Model Context Protocol) server that exposes operations related to pgvector/pgvector-based vector search, allowing an agent to create/use embeddings-backed search capabilities against a PostgreSQL + pgvector setup via MCP tools.

Evaluated Apr 04, 2026 (27d ago)
Homepage ↗ Ai Ml mcp pgvector postgres vector-search retrieval rag agents
⚙ Agent Friendliness
33
/ 100
Can an agent use this?
🔒 Security
39
/ 100
Is it safe for agents?
⚡ Reliability
19
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
45
Documentation
30
Error Messages
0
Auth Simplicity
40
Rate Limits
0

🔒 Security

TLS Enforcement
60
Auth Strength
35
Scope Granularity
20
Dep. Hygiene
40
Secret Handling
40

Specific security implementation details (TLS enforcement, auth mechanism, secret handling, dependency status) were not provided, so scores reflect uncertainty. As a DB-backed MCP server, treat it as having high blast radius: require least-privilege DB credentials, validate/parameterize any agent-provided SQL/query inputs, and enforce query limits to prevent data leakage and resource exhaustion.

⚡ Reliability

Uptime/SLA
0
Version Stability
45
Breaking Changes
0
Error Recovery
30
AF Security Reliability

Best When

You want agents to perform vector retrieval against a pgvector-backed PostgreSQL database using a standardized MCP tool interface.

Avoid When

You cannot (or do not want to) expose database-backed retrieval to an agent runtime, or you need strong, documented tenant isolation and query safety controls.

Use Cases

  • Agent-driven semantic search over Postgres/pgvector documents
  • Building RAG workflows where retrieval is performed via an MCP tool
  • Integrating pgvector query functionality into agent toolchains

Not For

  • Purely file-based/local vector search without Postgres/pgvector
  • User-facing search UI without an orchestration layer
  • Applications requiring strict multi-tenant isolation guarantees without additional safeguards

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
Yes
SDK
No
Webhooks
No

Authentication

OAuth: No Scopes: No

No authentication/authorization details were provided in the supplied content, so auth strength and scope granularity cannot be determined from observable facts.

Pricing

Free tier: No
Requires CC: No

No pricing information was provided; as an MCP server component, costs would typically be infrastructure/database-related.

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Agent may generate broad/expensive similarity queries; ensure query limits and safety controls
  • Database connectivity errors must be handled; without documented retry behavior, agents may fail unrecoverably
  • Vector retrieval tool outputs can be large; ensure truncation/limits to avoid context bloat

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Scores are editorial opinions as of 2026-04-04.

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