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weaviate · AI & ML

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Weaviate MCP Server gives any AI agent direct, structured access to your Weaviate vector database through the Model Context Protocol, so Claude, GPT, Gemini or any other model-agnostic assistant can run hybrid search, semantic lookups, and keyword filtering without custom integration code. Weaviate's hybrid search architecture blends dense vector similarity with traditional BM25-style keyword scoring, which means agents get results that are both semantically relevant and precise on exact terms, product names, or IDs — a common weak spot for pure vector search engines. This makes it a strong fit for teams building retrieval-augmented generation (RAG) pipelines, internal knowledge assistants, e-commerce product search, or support-ticket triage where recall and precision both matter.

On BusinessMCP, this connector plugs into the same hosted MCP server as your other tools, databases, and ad platforms, so your Weaviate vector index isn't a standalone integration living in one app — it becomes one capability among many that any agent can call through a single authenticated endpoint at /api/mcp using your mcph_* bearer key. Instead of wiring Weaviate credentials into every AI tool separately, you connect it once inside BusinessMCP's growth-suite dashboard, and every downstream agent inherits the same hybrid search access, governed by the same business-intelligence layer that tracks what's being queried and why. That unification is the core value: a vector database that's normally an isolated backend service becomes part of a coherent, auditable AI operations layer alongside your CRM data, revenue metrics, and other MCP-connected systems.

Because the hosted setup is cookieless and GDPR-friendly by design, teams in regulated industries or with strict data-handling policies can expose Weaviate-backed semantic search to AI agents without introducing new tracking or compliance risk. This matters for use cases like customer support knowledge bases, internal documentation search, or product catalog retrieval where the underlying content may include personal or sensitive information — the MCP layer adds a consistent access and observability boundary on top of raw vector search.

Typical deployments pair this Weaviate MCP server with schema definitions tailored to a specific domain — support articles, product listings, legal documents, research papers — and expose a small set of well-scoped tools (search, upsert, delete) rather than raw database access, keeping agent behavior predictable and auditable. Teams already running Weaviate in production can bring their existing cluster and collections into BusinessMCP rather than migrating data, making this a low-friction way to make an existing vector search engine agent-callable. For teams comparing vector database options or running multiple engines side by side, this connector sits naturally alongside other vector DB integrations in the same hosted MCP server, so agents can be routed to whichever store fits a given workload without changing how the agent itself is built.

$ npx mcphosting-cli add weaviate

Just say it in a thread

No configs, no docs. Once connected, these are the kinds of messages your agents act on.

"Run a combined vector and keyword search over a specified collection and return ranked results — and give me the highlights."

"Perform pure vector similarity search against a collection using a natural language query for me, then post a summary in the thread."

"Execute a bm25-style keyword search for exact term matching within a collection and flag anything that needs my approval."

What teams use it for

  • Power a retrieval-augmented generation (RAG) assistant with hybrid semantic + keyword search over internal documents
  • Let support agents query a Weaviate-backed knowledge base for precise, relevant troubleshooting answers
  • Enable AI-driven product search on an e-commerce catalog combining vector similarity with exact keyword matches
  • Give research or legal teams an AI agent that can semantically search large document collections without losing keyword precision
  • Centralize vector search access across multiple AI tools through one governed MCP endpoint instead of per-app integrations

Agent-callable tools

hybrid_search

Run a combined vector and keyword search over a specified collection and return ranked results.

semantic_search

Perform pure vector similarity search against a collection using a natural language query.

keyword_search

Execute a BM25-style keyword search for exact term matching within a collection.

upsert_objects

Insert or update one or more objects with their vector embeddings and metadata into a collection.

create_collection_schema

Define a new Weaviate collection schema including properties, vectorizer settings, and indexing config.

delete_objects

Remove objects from a collection by ID or by matching a filter condition.

get_object_by_id

Retrieve a single object's full data and vector by its unique identifier.

list_collections

Return the names and schemas of all collections available in the connected Weaviate instance.

Your data stays yours

Credentials live in your vault. We route requests — we never store, log, or train on your data.

Works with every AI

Connect once — portable across Claude, GPT, Gemini, and every local agent you run.

Frequently asked questions

Does this connector require my Weaviate cluster to be hosted by BusinessMCP?

No, you can connect an existing self-hosted or Weaviate Cloud cluster; BusinessMCP exposes it through your unified MCP endpoint rather than requiring migration.

How is hybrid search different from plain vector search here?

Hybrid search combines dense vector similarity with keyword-based scoring in a single query, so results stay semantically relevant while still matching exact terms like product names or IDs.

Can multiple AI agents use this same Weaviate connection at once?

Yes, since it's exposed through one hosted MCP server at /api/mcp, any authorized agent — Claude, GPT, Gemini, or others — can query it using the same bearer key and governed access rules.

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