Weaviate MCP Server (Official)
Official Weaviate MCP server enabling AI agents to interact with Weaviate's vector database — semantic search, hybrid search, object management, schema administration, and RAG-ready knowledge retrieval.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Cloud deployments: HTTPS enforced, SOC 2 Type II. Self-hosted: TLS responsibility falls on operator. No fine-grained scopes is a gap.
⚡ Reliability
Best When
An agent needs semantic or hybrid search over a Weaviate collection, or needs to manage a vector knowledge base with rich metadata filtering.
Avoid When
You're using a different vector DB — use that provider's MCP server instead.
Use Cases
- • Semantic and hybrid search over Weaviate collections from agent workflows
- • Inserting and querying objects in Weaviate for knowledge base management
- • Schema management and collection creation via agents
- • Multi-modal vector search (text, image) from agent pipelines
- • RAG retrieval over Weaviate-stored documents with generative modules
Not For
- • Traditional relational queries (Weaviate is a vector-first DB)
- • Teams using Pinecone, Qdrant, or other vector DB providers
- • Simple key-value lookups not requiring semantic understanding
Interface
Authentication
Weaviate Cloud uses API key auth. Self-hosted supports OIDC or no auth. API key via WEAVIATE_API_KEY env var. No fine-grained scopes.
Pricing
Open source Weaviate can be self-hosted at no cost. Weaviate Cloud provides managed clusters. Competitive with Pinecone on pricing.
Agent Metadata
Known Gotchas
- ⚠ Weaviate has multiple query interfaces (REST, GraphQL, gRPC) — agents should use v4 Python/JS client's native methods
- ⚠ Schema changes require careful migration — adding properties is safe, removing is destructive
- ⚠ Vectorizer module must be configured per collection — mismatch causes insertion failures
- ⚠ Cross-reference properties between collections require careful ordering for upserts
- ⚠ Sandbox clusters auto-sleep after inactivity — cold start adds latency
- ⚠ v3 vs v4 client breaking changes — ensure MCP server uses v4 API style
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Weaviate MCP Server (Official).
Scores are editorial opinions as of 2026-03-06.