Book a Sponsor MCP Server

by bookasponsor Your server? Claim it

answering

Book a Sponsor is answering right now. Last checked 3 min ago. It exposes 4 tools.

Find brands that already sponsor newsletters like yours, with sponsorship rates.

Uptime history 20 days of history

20 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

158 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 October 2026. No other catalogue keeps this.

7 Oct a tool description was rewritten list_brands_sponsoring_newsletters

Nothing serious here today

Today is the operative word: we check Book a Sponsor every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add book-a-sponsor --transport http https://bookasponsor.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://bookasponsor.com/mcp

~/.codex/config.toml

[mcp_servers.book-a-sponsor]
url = "https://bookasponsor.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "book-a-sponsor": {
      "url": "https://bookasponsor.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "book-a-sponsor": {
      "type": "http",
      "url": "https://bookasponsor.com/mcp"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

newsletter

find_newsletter_sponsors

Use this when someone who runs a newsletter asks which brands might sponsor it or how to find sponsors for it. Takes the newsletter's web address, finds similar newsletters, and returns the brands that sponsored them, with the newsletters and dates where each ad ran. Starts a scan of the public newsletter pages if none exists; a new scan takes about 15 to 60 seconds.

get_newsletter_sponsorship_rates

Use this when someone asks how much to charge for a newsletter sponsorship or what newsletters charge for an ad. Returns the median price newsletters list for the main sponsor slot of one issue, by list size, read from their own advertise pages.

brands

list_brands_sponsoring_newsletters

Use this when someone asks which companies or brands sponsor newsletters, overall or in a topic such as AI, finance or marketing. Returns the brands seen in the most newsletters in the last 12 months, mostly read from published issues.

sponsor

get_sponsor_scan

Use this to read the result of a sponsor scan that find_newsletter_sponsors started, for example when it reported that the scan was still running. Takes the same newsletter web address.

Endpoints

URL	Transport	State	Latency	Checked
https://bookasponsor.com/mcp	streamable-http	answering	153 ms	3 min ago

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Arugula

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Find offers that fit what you want, ranked by fit only, with links to buy.

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Finds the LLM model IDs pinned in your code that vendors have already switched off, or have dated to

16 installs/wk local only

Blogsuche

by trusted-blogs

Find vetted blogs for sponsored posts and link building, with topics and SEO metrics. Read-only.

2 tools answering

Book a Sponsor — questions

Answers built from our own checks of this server.

What can Book a Sponsor do?

It exposes 4 tools, read directly from the server on our last check. Among them: find_newsletter_sponsors, get_newsletter_sponsorship_rates, get_sponsor_scan, list_brands_sponsoring_newsletters. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Book a Sponsor working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 158 ms. The bar chart above shows every period we have measured.

How do I connect Book a Sponsor?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Book a Sponsor need an API key?

No. Book a Sponsor completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Book a Sponsor?

It answers our handshake in 158 ms on average, which is faster than 88% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.