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Kit

Kit MCP Server

Yes. Kit ships a first-party MCP server, so Claude, ChatGPT, or Cursor can read your subscriber and broadcast data and take approved actions in your account without any custom code.

OFFICIAL MCP✓ alivePublic APILLMs: Claude (Desktop/Web), ChatGPT, Claude Code, Cursor, Windsurf, Cline, Gemini
Open MCP pageTry Kit
MCP status verified 2026-07-13Agent-readiness 8/10
Data from Buddy's database, auto-rechecked weekly

What is the Kit MCP server?

Kit runs an official MCP server at app.kit.com/mcp (HTTP transport, documented at developers.kit.com/mcp/kit-mcp). Authentication is OAuth: connecting from Claude, ChatGPT or Cursor opens a Kit sign-in flow, and the token is scoped to your creator account. No API keys to paste around.

The server maps the full v4 API surface: subscribers, tags, segments, custom fields, sequences and broadcasts, including write operations like composing and scheduling a broadcast. Write and destructive tools carry safety annotations, so a client like Claude asks for confirmation before anything irreversible. Rate limit is 120 requests per minute per token, and it is available on the paid Creator and Creator Pro plans.

Kit also ships a second, separate MCP for developers: the Kit Developer Docs MCP at developers.kit.com/mcp gives coding agents (Claude Code, Cursor, Windsurf) live access to the full API reference. One MCP to act on your account, one to build against the platform. Very few email tools offer either, let alone both.

For the rest of the picture see the Kit review or full pricing breakdown.

Inside Claude / Cursor / Codex

What you can build with the Kit MCP

Illustrative workflow examples. Exact tool names, parameters, and outputs come from Kit's MCP server schema, so check the docs for the live surface.

kit-mcplive
>Tag everyone who clicked my last email as "engaged-reader"
●kit.tag_subscribers({ clicked: "last_broadcast", tag: "engaged-reader" })
TAGGED · 412 SUBSCRIBERS
Clicked last broadcast412 matched
Tag appliedengaged-reader
Already had tag37 skipped
Enroll the 412 into the upsell sequence?
kit-mcplive
>How did my last 5 broadcasts do on opens and clicks?
●kit.list_broadcasts({ limit: 5 })
LAST 5 BROADCASTS · OPEN / CLICK
Product launch48.2% / 9.1%
Weekly digest #1431.0% / 4.2%
Black Friday teaser44.6% / 12.3%
Re-engagement12.1% / 1.4%
Welcome step 263.5% / 18.0%
Draft A/B subject lines for the two weakest?
kit-mcplive
>Enroll new ebook subscribers into my welcome sequence
●kit.add_to_sequence({ sequence: "welcome", filter: "tag:ebook" })
ENROLLED · WELCOME SEQUENCE
Subscribers enrolled58
SequenceWelcome (3 emails)
First emailsends now
TMB SCORE FOR KitMCP: OfficialAgent fit: 8/10
Read review →

Which AI clients can use Kit MCP?

Not every AI assistant supports MCP natively. Per-client picture for Kit:

ClientSupportNotes
Claude (Desktop/Web)Native MCPAdd app.kit.com/mcp as a custom connector; OAuth sign-in to your Kit account, no API key needed.
ChatGPTNative MCPExplicitly supported by Kit's official MCP docs; connect via the same OAuth flow.
Claude CodeNative MCPclaude mcp add --transport http kit https://app.kit.com/mcp. The separate Developer Docs MCP (developers.kit.com/mcp) is built for coding agents.
CursorNative MCPOfficial Kit setup guide at developers.kit.com/mcp; add app.kit.com/mcp as an MCP server, OAuth sign-in to your Kit account, no API key.
WindsurfNative MCPCovered by Kit's official MCP setup guides; connect app.kit.com/mcp via the OAuth flow.
ClineNative MCPCovered by Kit's official MCP setup guides; connect app.kit.com/mcp via the OAuth flow.
GeminiNative MCPListed as a supported client on kit.com/ai/mcp; connect via the same OAuth flow, no API key needed.

How to connect Kit MCP to Claude Desktop

Add this block to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop. Cursor and Codex use a similar schema.

{
  "mcpServers": {
    "kit": {
      "command": "npx",
      "args": ["mcp-remote", "<YOUR_MCP_URL>"]
    }
  }
}
// HTTP-transport MCP. Get your <YOUR_MCP_URL> from the vendor dashboard.
// Server source: https://app.kit.com/mcp
// Claude Code (one-liner): claude mcp add kit <YOUR_MCP_URL> --transport http

Some MCP servers require an API key. Check the source page for setup: app.kit.com/mcp.

Does Kit MCP cost extra?

Included with subscription

Kit ships an official MCP server that uses your existing subscription credentials.

  • No separate MCP licence to buy. You pay for your Kit plan, the MCP server queries that account.
  • Whether it's gated to a specific tier wasn't extracted automatically — verify the access requirements on the MCP page or pricing docs.

Kit also publishes a REST API

Kit publishes an API, but per-tier gating wasn't extracted automatically.

Auth method
—
SDK languages
—
OpenAPI spec
—
Webhooks
available
Structured outputs
—
See Kit API page

What you can do with Kit from an AI agent

Three shapes of agent workflow. Pick the row that matches how you actually use Claude / Cursor / Codex day to day.

INDIE / SOLO

Skip the dashboard, ask Claude

  • "What changed this week?" answered in seconds
  • Quick one-off questions without leaving the editor
  • Pipe Kit data into your personal notes / docs without writing a script
Effort: 30 seconds — paste the config, restart Claude
AGENCY

Run client analysis at agent speed

  • Hand the MCP server to your team — every consultant can ask Claude about any client's Kit account
  • Multi-account workflows without context-switching the Kit UI
  • Reports you'd normally spend hours on, done before standup
Effort: An afternoon — set up auth per client
IN-HOUSE TEAM

Production agent workflows

  • Embed in your internal Codex / Cursor agents that triage Kit data daily
  • Combine with other MCP servers in a multi-step agent chain
  • Constrain agents to read-only roles to keep production Kit safe
Effort: Days — security review + role config

Limits and gotchas

  • Official MCP server — published by Kit themselves, so it should track product changes.
  • Fallback: the REST API works for any flow the MCP server doesn't cover.
  • Rate limits: MCP calls count against your underlying Kit API quota. Burst usage from a curious agent can drain a daily allowance fast.
8/10

Agent-readiness verdict

A first-party MCP server with OAuth, full v4 API coverage including writes with confirmation guards, and explicit ChatGPT, Claude and Cursor support, plus a separate developer-docs MCP. It earns an 8 out of 10: about as complete as email-platform MCP gets today, held back only by requiring a paid plan and the 120 requests per minute ceiling.

Official MCP at app.kit.com/mcp verified 2026-07-07: OAuth, full v4 surface incl. writes w/ safety annotations, ChatGPT+Claude+Cursor, paid plans, 120rpm. Second Developer Docs MCP at developers.kit.com/mcp. llms.txt live. Score 7->8 (Joonas approved).

Scored by Joonas (TMB).

Kit MCP & API FAQ

Is the Kit MCP server official?+
Yes — an official, vendor-maintained server at https://app.kit.com/mcp.
Can I use the Kit MCP with Cursor or Codex?+
Yes — MCP is a protocol, not Claude-specific. Any MCP-capable client (Cursor, Codex, Windsurf, Zed) can use the same server config with minor path adjustments.
Does Kit have a public API?+
Yes — public REST API at developers.kit.com.
Does Kit support webhooks?+
Yes — webhooks are available on standard plans.

Sources

Data verified by Joonas on the dates shown. MCP server status auto-rechecked weekly.

Joonas Rotko
Joonas RotkoAuthor & Founder of That Marketing Buddy

10+ years in digital marketing. I review marketing software for AI-stack fit: real pricing, MCP and API support, and how cleanly each tool drops into an AI agent workflow, cross-checked against verified data and real user feedback.

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