MCP · Model Context Protocol

Research sponsors inside any AI

Connect SponsorGap to Claude, Cursor, Windsurf, and more. Ask plain-English questions about brands, budgets, and niches — without switching tabs.

Live · MCP server active

What you can ask

Once connected, your AI has access to SponsorGap's full database through these tools:

search_sponsors
Search brands by niche, industry, or keyword — see who is actively spending on newsletters.
find_recent_sponsors
Find brands that have been sponsoring newsletters in the last N days.
get_trending_brands
Identify brands whose ad spend is growing — ideal timing for outreach.
find_brand_appearances
See every newsletter a specific brand has ever sponsored.
find_competitor_sponsors
Brands that sponsor your competitors but haven't sponsored you yet.
get_sponsor_contact
Get the decision-maker's email and LinkedIn for a brand.
get_outreach_angle
Generate a personalized cold email draft for approaching a specific brand.
search_creators
Find newsletters by niche, audience size, or pricing tier.

Example prompts

Just type these naturally in any connected AI assistant:

Which SaaS brands are actively sponsoring fintech newsletters?
Find sponsors in the AI tools niche with a growing budget
What brands recently raised funding and are buying newsletter ads?
Show me who sponsors Morning Brew and The Hustle
Find competitor sponsors for my newsletter — my competitors are Lenny's Newsletter and Superhuman
Write me a cold email pitch to approach Notion as a sponsor

Connect your AI tool

Follow the guide for your AI tool. You'll need a SponsorGap API key — get one in Settings → API Access.

✦
Claude.ai (web)
Remote MCP via OAuth · No installation needed
1
Open Claude Settings → Integrations

Go to claude.ai → click your profile icon → Settings → Integrations.

2
Add a new MCP server

Click Add integration and paste the SponsorGap MCP URL:

https://sponsorgap-mcp-cc7ac08f6c89.herokuapp.com/mcp
3
Authenticate with your API key

Claude will redirect you to a SponsorGap authorization page. Enter your API key and click Connect Sponsorgap.

4
Start a conversation

Open a new chat in Claude.ai. The SponsorGap tools will be available automatically. Just ask a question about sponsors.

Requires:Professional planAdvanced plan
⬛
Claude Desktop
Local stdio · Runs on your machine
1
Get your API key

Go to Settings → API Access and generate a key.

2
Open Claude Desktop config

Go to Claude Desktop → menu → Settings → Developer → click Edit Config. This opens claude_desktop_config.json.

3
Add the SponsorGap server

Paste this into your config (replace YOUR_API_KEY):

{
  "mcpServers": {
    "sponsorgap": {
      "command": "npx",
      "args": ["-y", "sponsorgap-mcp"],
      "env": {
        "SPONSORGAP_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}
4
Restart Claude Desktop

Save the config and restart Claude Desktop. You'll see the SponsorGap tools listed in the tools panel.

Note: Requires Node.js installed. The npx sponsorgap-mcp command downloads and runs the latest version automatically.
Requires:Professional planAdvanced plan
⌥
Cursor
Remote URL or local stdio

Cursor supports two connection methods. Remote (recommended) requires no installation.

Option A — Remote URL (recommended)
1
Open Cursor Settings → MCP

Go to Cursor Settings → MCP (or press Cmd+Shift+J → MCP tab).

2
Add a new server

Click Add new MCP server and fill in:

{
  "mcpServers": {
    "sponsorgap": {
      "url": "https://sponsorgap-mcp-cc7ac08f6c89.herokuapp.com/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}
3
Use it in Agent mode

Switch to Agent mode in Cursor chat. The SponsorGap tools will be available — just ask your question.

Option B — Local stdio (alternative)
{
  "mcpServers": {
    "sponsorgap": {
      "command": "npx",
      "args": ["-y", "sponsorgap-mcp"],
      "env": {
        "SPONSORGAP_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}
Requires:Professional planAdvanced plan
◈
Windsurf
Remote URL or local stdio
1
Open Windsurf MCP config

Go to Windsurf Settings → MCP Servers → Edit Config to open mcp_config.json.

2
Add the SponsorGap server

Paste one of these configs (replace YOUR_API_KEY):

Remote (no install needed):

{
  "mcpServers": {
    "sponsorgap": {
      "serverUrl": "https://sponsorgap-mcp-cc7ac08f6c89.herokuapp.com/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

Local stdio:

{
  "mcpServers": {
    "sponsorgap": {
      "command": "npx",
      "args": ["-y", "sponsorgap-mcp"],
      "env": {
        "SPONSORGAP_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}
3
Restart Windsurf and use Cascade

Restart Windsurf and open a Cascade chat. SponsorGap tools will be available in agent mode.

Requires:Professional planAdvanced plan
◎
ChatGPT
Remote MCP · OpenAI rollout in progress
ChatGPT MCP support is rolling out. OpenAI added MCP to ChatGPT in 2025. Once available in your account, you can connect using the same URL and OAuth flow as Claude.ai.
1
Open ChatGPT → Settings → Connectors

When available, go to ChatGPT Settings → Connected apps or MCP Servers.

2
Add the SponsorGap MCP URL
https://sponsorgap-mcp-cc7ac08f6c89.herokuapp.com/mcp
3
Authenticate with your API key

You'll be redirected to a SponsorGap page to enter your API key and authorize access.

Requires:Professional planAdvanced plan
✦
Gemini
Google AI Studio / Gemini API
Gemini MCP support is available via Google AI Studio. Google added MCP support to Gemini in 2025. You can connect using the standard MCP URL.
1
Open Google AI Studio → Tools

Go to aistudio.google.com → Tools → MCP Servers.

2
Add the SponsorGap MCP server
https://sponsorgap-mcp-cc7ac08f6c89.herokuapp.com/mcp
3
Add your API key as a Bearer header

In the headers field, add: Authorization: Bearer YOUR_API_KEY

Requires:Professional planAdvanced plan

Get your API key

Available on Professional and Advanced plans. Generate your key in Settings → API Access.

Go to Settings →