book-a-sponsor
Newsletter sponsor data: give it a newsletter's web address and it finds similar newsletters and the brands that sponsored them, with the newsletter and date where each ad ran…
Plugin bundle · by rdoyle99
About
book-a-sponsor is a plugin bundle for AI coding tools published by rdoyle99. Marketplaces we read that list it: 1 (Community GitHub marketplaces). We first saw it on 2026-10-29 and have recorded no change since. As of our marketplace pass on 2026-11-04.
Newsletter sponsor data: give it a newsletter's web address and it finds similar newsletters and the brands that sponsored them, with the newsletter and date where each ad ran; lists brands sponsoring newsletters by topic; and gives the median price newsletters list for a sponsor slot by list size. Adds the book-a-sponsor skill and the hosted Book a Sponsor MCP server (https://bookasponsor.com/mcp); no sign-in, no API key. Brand-level data only: no people, emails or phone numbers.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a Claude Code plugin
Built from what Community GitHub marketplaces declares.
/plugin marketplace add davepoon/buildwithclaude
/plugin install book-a-sponsor@buildwithclaudeWhere it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Community marketplace davepoon/buildwithclaude (Open the source on GitHub) | Listed | 1.0.1 | Forks (GitHub): 0 Stars (GitHub): 0 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
Listed in one community marketplace
| Marketplace | Repository | Stars (GitHub) |
|---|---|---|
| buildwithclaude | davepoon/buildwithclaude | 3 717 |
What the bundle contains
As published on Community GitHub marketplaces.
MCP servers: 1
book-a-sponsor
Skills: 1
book-a-sponsor
What changed
- Became a product we track
- Community GitHub marketplaces: appeared
Possibly the same plugin
Listings that share a signal with this one but not enough for us to treat them as the same product.
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Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
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Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.