Weaviate MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Weaviate MCP or direct API to search collections, answer questions, retrieve relevant objects, and explore vector data through natural language.

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Api Key

Weaviate MCP is a provider-hosted Query Agent for searching Weaviate Cloud collections. It turns natural-language questions into AI-powered collection searches.

2 Tools

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TOOL ROUTER PLAYGROUND
Weaviate MCP
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TOOLS

Supported Tools

Every Weaviate MCP action and event your agent gets out of the box.

Query agent ask

Ask Mode transforms your query into actionable searches or aggregations, and then provides a final answer to the question.

Query agent search

Search Mode combines AI-powered semantic search with structured filtering and returns the matching Weaviate objects directly.

SETUP GUIDE

Connect Weaviate MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["weaviate_mcp"],
  mcp: true,
});
Create a session scoped to Weaviate MCP and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Search my Weaviate Cloud collections for documents about reducing vector search latency and summarize the three most relevant findings.",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a Weaviate MCP request
SETUP GUIDE

Connect Weaviate MCP API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["weaviate_mcp"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Weaviate MCP
3

Run Weaviate MCP tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Search my Weaviate Cloud collections for documents about reducing vector search latency and summarize the three most relevant findings." }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the Weaviate MCP tool calls through the session, and print the final answer

Why Use Composio?

AI Native Weaviate MCP Integration

  • Supports both Weaviate MCP and direct API-based integrations
  • Structured, LLM-friendly schemas for reliable collection queries
  • Rich coverage for searching and retrieving data from Weaviate Cloud

Secure API Key Handling

  • Connect Weaviate MCP with your own API key credentials
  • Central place to manage, scope, and revoke Weaviate access
  • Per-user and per-environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access Weaviate MCP
  • Scoped, least-privilege access to Weaviate Cloud collections
  • Full audit trail of agent actions to support review and compliance
FRAMEWORKS

Use Weaviate MCP with any AI Agent Framework

Choose a Framework you want to connect Weaviate MCP with

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

Yes, Weaviate MCP requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your Weaviate connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your Weaviate account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Weaviate actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Weaviate at any time.

When you connect a Weaviate account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Weaviate as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside Weaviate. If Weaviate lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside Weaviate at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Weaviate connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment Weaviate rejects the old key. Create a new key in Weaviate and reconnect the account from the Composio dashboard or by asking your agent to reconnect Weaviate. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Weaviate use. Paid plans add higher limits and team features. Your Weaviate plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Weaviate accounts).

With Composio, you connect Weaviate once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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