aVenture MCP Server

Ask Claude, ChatGPT, Cursor, or any MCP client questions about private companies, founders, investors, funding rounds, and news, and get answers with sources. aVenture hosts the server at https://mcp.aventure.vc/mcp; you sign in with a free aVenture account (sign up).

Connect by Pasting One Prompt

Paste this into Claude, ChatGPT, Claude Code, or your AI app:

Connect the aVenture MCP server for me.
- URL: https://mcp.aventure.vc/mcp
- Transport: Streamable HTTP
- OAuth: leave client fields blank when the app supports dynamic registration;
  use client ID KL7mINzGk0le0QiD when it requires a pre-registered client.
If you can add it yourself (in Claude Code, run
`claude mcp add --scope user --transport http --client-id KL7mINzGk0le0QiD --callback-port 6276 aventure https://mcp.aventure.vc/mcp`),
do that. Otherwise tell me exactly where to enter these settings in this app.
When it's connected and I've signed in, read aVenture's profile for stripe.com
to confirm it works. Docs: https://docs.aventure.vc/mcp

Related MCP server: VentureRadar Company API

Connect by Hand

1. In Claude, ChatGPT, or Cursor, open the settings for custom connectors (MCP servers).

2. Add the aVenture server: URL https://mcp.aventure.vc/mcp, transport Streamable HTTP.

3. Leave the OAuth client fields blank when the app supports dynamic registration; enter client ID KL7mINzGk0le0QiD when it requires a pre-registered client.

4. Sign in to aVenture in the browser window that opens.

Claude Code: run claude mcp add --scope user --transport http --client-id KL7mINzGk0le0QiD --callback-port 6276 aventure https://mcp.aventure.vc/mcp, then /mcp, select aventure, and sign in.

Other MCP clients: follow the app's OAuth setup. URL-only clients can use the advertised registration endpoint; clients requiring pre-registration use the client ID from step 3. In Claude and ChatGPT, the client ID goes under advanced settings.

Free vs. Paid

• Free account: 25 company and 25 person profile reads a month and 20 name lookups a day. Create an account.

• AI Plus, $49/mo: plain-English questions in the API, CLI, and MCP server, competitor and investor-activity questions, 500 company and 500 person profile reads, and 30 company and 30 person research requests a month. Get AI Plus.

MCP, CLI, or Researchly?

If Sign-In Fails

• does not support dynamic client registration: enter the client ID above in the client's OAuth settings.

• 401 on a server that worked before: the sign-in expired. Reconnect the server in your client; in Claude Code, run /mcp, select aventure, and sign in.

• More fixes: MCP troubleshooting.

Ask Your First Question

• "Read aVenture's profile for ramp.com."

• "Look up Stripe on aVenture and summarize its funding history."

• "Who is Patrick Collison, and which companies is he connected to?"

• "Which company owns ramp.com, and who founded it?"

• "Find seed-stage climate software companies in Austin."

Plans and Usage

Profile views, web searches, and research requests count toward your plan's monthly allowance. When one runs out, the answer says which limit you reached and how to upgrade. Ask your assistant to list aVenture plans with monthly and annual prices. You can also manage your plan in subscription settings.

Advanced: Run the Server Locally

Run the server yourself only when your client can't complete an OAuth sign-in or you need it inside your own network. It requires Node.js 24.18.0 or later.

npm install --global @aventurevc/mcp-server
aventure-mcp-server

The server listens at http://localhost:3333/mcp, which only clients on the same machine can reach; a cloud app such as ChatGPT cannot. Create a key in API key settings and have your client send it with every request:

{
  "mcpServers": {
    "aventure": {
      "type": "http",
      "url": "http://localhost:3333/mcp",
      "headers": { "Authorization": "Bearer <your-api-key>" }
    }
  }
}

Store the key in your client's secret storage, not in a file you commit. AVENTURE_MCP_PORT and AVENTURE_MCP_PATH change the port and route.

Documentation

• MCP quickstart

• Authentication and plans

• Errors