SmitheryListed
Reletter
Reletter is the newsletter data API for apps, agents, and outreach tools. Search 7M+ Substack, LinkedIn, Ghost, Beehiiv, and Kit newsletters; retrieve subscriber numbers, contacts, full-text posts, rankings, and audience data; and monitor mentions in near real time. Use it via REST, Python/CLI, or the remote MCP server. Agents can buy request bundles programmatically through HTTP 402 using MPP, with no browser signup required.
First seen 2 Oct 2026. Evidence as of 5 Oct 2026.
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Tools
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Source listings
Each with its own history
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Recorded changes
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Tools
No tool list captured yet.
Change history
No changes since the first observation. The first snapshot is the baseline.
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Smithery | james-ytpu/reletter | 2 Oct 2026 | 5 Oct 2026 | 1 |