Crustdata MCP Server for Claude and Cursor

Hosted Crustdata MCP for Claude, Cursor, and ChatGPT. Live company, people, and funding data with managed auth — built for prospecting agents.

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CrustData is an AI-powered data intelligence platform for real-time company and people data. It helps B2B sales teams, AI SDRs, and investors react to live business signals.

15 Tools

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Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
Crustdata
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TOOLS

Supported Tools

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

Enrich person screener

The screener_person_enrich endpoint enriches person data by providing additional information based on the given query.

Fetch headcount by facet timeseries

Retrieves headcount data as a timeseries with faceted analysis capabilities.

Find companies by investor

Find portfolio companies using Crustdata's supported Company Search API.

Filter decision makers data

Filters and retrieves decision maker data from the CrustData B2B SaaS integration platform based on complex criteria.

Post funding milestone timeseries data

The FundingMilestoneTimeseries endpoint retrieves time-series data related to funding milestones for companies.

Post headcount timeseries data

Retrieves filtered and sorted headcount timeseries data from the CrustData Data Lab.

Search indexed job listings

Search indexed jobs using Crustdata's supported versioned Job API.

Post web traffic data

Retrieves filtered and sorted web traffic data from the CrustData platform.

Retrieve linkedin posts

Retrieves LinkedIn posts for a specified company using CrustData's screener functionality.

Screener company information

The GetCompanyScreener endpoint allows users to search and filter companies based on various criteria such as headcount, growth rate, funding, and more.

Screen metrics and filter conditions

The ScreenData endpoint enables advanced data screening and filtering on the CrustData platform.

Search companies with filters

The CompanySearch endpoint enables users to search and filter companies using the CrustData API.

Search for job id in screener

The screener_person_search endpoint allows users to search for persons associated with a specific job ID within the CrustData B2B SaaS integration platform.

Search linkedin posts by keyword

This endpoint enables searching for LinkedIn posts using a specific keyword.

Validate API Credentials

Validate Crustdata API credentials against the current free account endpoint.

SETUP GUIDE

Connect Crustdata 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: ["crustdata"],
  mcp: true,
});
Create a session scoped to Crustdata 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: "Find recent funding rounds for SaaS companies in Germany",
  stopWhen: stepCountIs(10),
});

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

Connect Crustdata 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: ["crustdata"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to Crustdata
3

Run Crustdata tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Find recent funding rounds for SaaS companies in Germany" }],
});

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 Crustdata tool calls through the session, and print the final answer

Why Use Composio?

AI Native Crustdata Integration

  • Supports both Crustdata MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for reading, writing, and querying your Crustdata data

Managed Auth

  • Built-in API key handling with secure storage
  • Central place to manage, scope, and revoke Crustdata 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 Crustdata
  • Scoped, least privilege access to Crustdata resources
  • Full audit trail of agent actions to support review and compliance

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

When you connect a Crustdata account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Crustdata 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 Crustdata. If Crustdata 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 Crustdata 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 Crustdata 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 Crustdata rejects the old key. Create a new key in Crustdata and reconnect the account from the Composio dashboard or by asking your agent to reconnect Crustdata. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Crustdata use. Paid plans add higher limits and team features. Your Crustdata 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 Crustdata accounts).

With Composio, you connect Crustdata 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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