English Français العربية

com.mambabuilt/mcp-vc-accelerator-portfolio-list-builder

Official registry Other

Portfolio company lists from Y Combinator, a16z, Sequoia, Accel, and any VC portfolio page

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @mambalabsdev/mcp-vc-accelerator-portfolio-list-builder
Claude Code 
claude mcp add mcp-vc-accelerator-portfolio-list-builde -e 'APIFY_TOKEN=<your apify_token>' -- npx -y @mambalabsdev/mcp-vc-accelerator-portfolio-list-builder@1.0.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mcp-vc-accelerator-portfolio-list-builde": {
            "command": "npx",
            "args": [
                "-y",
                "@mambalabsdev/mcp-vc-accelerator-portfolio-list-builder@1.0.1"
            ],
            "env": {
                "APIFY_TOKEN": "<your apify_token>"
            }
        }
    }
}

Environment variables

  • APIFY_TOKEN required secret Apify API token from https://console.apify.com/account/integrations

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. VC and Accelerator Portfolio List Builder MCP Server
  2. What's Inside
  3. What it does
  4. Quick start
  5. Prerequisites
  6. Example prompts
  7. Tool
  8. Inputs
  9. Pricing
  10. Full actor documentation
  11. License

VC and Accelerator Portfolio List Builder MCP Server

An MCP server for the Mamba Labs VC and Accelerator Portfolio List Builder actor on Apify. Give it investors or accelerators by name, or portfolio page URLs, and get one row per portfolio company with its name, domain, website, description, and stage, batch, or status where the source gives it.

What's Inside

What it does

Y Combinator is read from its public company directory and can be filtered by batch, industry, region, status, and search words. Andreessen Horowitz (a16z), Sequoia Capital, Accel, Index Ventures, Founders Fund, Greylock, Lightspeed Venture Partners, Khosla Ventures, First Round Capital, Techstars, and Antler are built in, and any other portfolio page works by URL. Each source also returns one free summary row with the count and the way it was read, or the reason it returned nothing. Pages are read from the investor's own site and robots.txt is obeyed.

All of the work runs on Apify. This package is a thin client that starts the actor run, waits for it, and hands back the dataset rows.

Quick start

You need Node.js 18 or newer and an Apify account with an API token.

Add this to your Claude Desktop config (claude_desktop_config.json), Cursor, or any MCP client:

{
  "mcpServers": {
    "mamba-vc-accelerator-portfolio-list-builder": {
      "command": "npx",
      "args": [
        "-y",
        "@mambalabsdev/mcp-vc-accelerator-portfolio-list-builder"
      ],
      "env": {
        "APIFY_TOKEN": "your-apify-token"
      }
    }
  }
}

Restart the client. The build_portfolio_list tool appears.

Prerequisites

Example prompts

  • "List the Y Combinator W25 companies in fintech with their websites."
  • "Which companies are in Accel's and Greylock's portfolios?"
  • "Pull the portfolio of https://example.vc/portfolio into a table."

Tool

build_portfolio_list. One tool. Example arguments:

{
  "investors": ["Y Combinator"],
  "yc_batches": ["W25"],
  "max_companies_per_source": 100
}

Inputs

Every buyer facing input of the actor. Omitted inputs take the actor's own defaults.

InputTypeRequiredDescription
investorsarraynoBuilt in names or portfolio page URLs, up to 25. Default Y Combinator.
yc_batchesarraynoY Combinator batches, for example S24, W25.
yc_industriesarraynoY Combinator industries.
yc_regionsarraynoY Combinator regions.
yc_statusarraynoactive, acquired, public, inactive.
yc_querystringnoWords to search the Y Combinator directory for.
max_companies_per_sourceintegernoCompany rows per source. Default 500.
open_company_pagesbooleannoOpen per company pages when needed. Default true.
max_detail_pagesintegernoCompany pages opened per source. Default 200.
only_newbooleannoSkip companies an earlier run returned. Default false.
state_keystringnoName for the only new companies memory.
max_charge_usdstringnoOptional cost cap for the run.
proxy_modestringnoauto or direct. Default auto.

Pricing

Pay per event on Apify, billed to your Apify account. Prices in USD.

EventFree planBronzeSilverGold
company-row, per portfolio company with a domain$0.007$0.00665$0.0063$0.00595
apify-actor-start, per run start$0.0025$0.0025$0.0025$0.0025

Rows with no domain, source summary rows, and already delivered companies are free. Mamba Labs pays the platform costs of the run, Apify proxy traffic included.

Full actor documentation

apify.com/mambalabs/vc-accelerator-portfolio-list-builder

License

MIT. See LICENSE.

Frequently asked questions

What is com.mambabuilt/mcp-vc-accelerator-portfolio-list-builder?

Portfolio company lists from Y Combinator, a16z, Sequoia, Accel, and any VC portfolio page

How do I install com.mambabuilt/mcp-vc-accelerator-portfolio-list-builder?

It runs on your machine. In Claude Code: claude mcp add mcp-vc-accelerator-portfolio-list-builde -e 'APIFY_TOKEN=<your apify_token>' -- npx -y @mambalabsdev/mcp-vc-accelerator-portfolio-list-builder@1.0.1. For other clients, paste the JSON configuration from this page into their MCP settings.

Does com.mambabuilt/mcp-vc-accelerator-portfolio-list-builder need an API key?

Yes. It expects APIFY_TOKEN, which you set in its configuration.

Is com.mambabuilt/mcp-vc-accelerator-portfolio-list-builder open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains com.mambabuilt/mcp-vc-accelerator-portfolio-list-builder?

It is published by mambalabsdev. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.