MCP server
Newsletter data inside your AI assistant
The NewsletterFIT MCP server gives Claude, ChatGPT, Cursor and other MCP clients tools to search newsletters, read profiles, look up sponsors and follow entities. Sign in with OAuth or use an API key.
7 days of Pro, no credit card required
What it does
Works where you already work
Claude.ai, ChatGPT, Claude Code, Cursor and Claude Desktop, with setup steps for each.
Grounded answers
The assistant answers from newsletter records and can cite the newsletter and issue.
OAuth or API key
Connectors sign in with OAuth; scripts and IDEs can use a Bearer key.
Same quotas as the API
MCP calls count against your plan's API quota.
Example
An example conversation
Made-up companies and newsletters, real tool flow.
Which newsletters wrote about Halcyon Data this month, and has it sponsored any?
→ search-entities-tool · get-entity-tool · search-sponsors-tool
Five newsletters mentioned Halcyon Data in the last 30 days. The most-read was The Ops Ledger (est. 64K), in an issue on rebuilding the mid-market data stack.
It sponsored Pipeline Weekly twice in that period, its first placements this year.
FAQ
Which clients are supported?
Any client that supports remote MCP over HTTP. The docs have tested setup steps for Claude.ai, ChatGPT, Claude Code, Cursor and Claude Desktop.
What tools does it expose?
Search newsletters, articles, sponsors, entities and topics; read newsletter, sponsor and entity profiles; rising newsletters; your watchlist and alerts. The tool schemas are published.