PopMCP
kit_add_Add subscriber to sequence by email address.
Kit MCP server for your AI
Tag and untag subscribers by email, add them to sequences, draft broadcasts, and pull open, click and growth stats without opening the dashboard.
PopMCPKit
Which broadcast last month got the most link clicks?
Supported Kit tools
Every subscriber, tag, sequence, broadcast, form and webhook call the server exposes, plus the account events it can watch.
kit_create_Create a broadcast.
kit_create_Create a subscriber.
kit_create_Create a tag
kit_filter_Filter subscribers based on engagement
kit_get_Get a broadcast
kit_get_Get a sequence.
kit_get_Get a subscriber
kit_get_Get stats for a broadcast
kit_list_List broadcasts
kit_list_List sequences.
kit_list_List subscribers
kit_list_List subscribers for a sequence
kit_list_List subscribers for a tag
kit_list_List tags
kit_list_List tags for a subscriber
kit_remove_Remove tag from subscriber by email address
kit_tag_Tag a subscriber by email address.
kit_unsubscribe_Unsubscribe subscriber
kit_update_Update a subscriber.
kit_update_Update tag name
kit_get_Get Creator Profile
kit_get_Get current account
kit_get_Get email stats
kit_get_Get growth stats.
kit_add_Add subscriber to form by email address.
kit_create_Create a custom field.
kit_list_List custom fields.
kit_list_List forms
kit_list_List subscribers for a form
kit_create_Create a webhook.
kit_list_List webhooks.
kit_list_List posts
kit_list_List email templates
kit_list_List segments
kit_add_Add subscriber to sequence.
kit_create_Create a sequence.
kit_delete_Delete a broadcast
kit_delete_Delete a sequence.
kit_get_Get link clicks for a broadcast.
kit_get_Get stats for a list of broadcasts
kit_list_List stats for a subscriber.
kit_remove_Remove tag from subscriber
kit_tag_Tag a subscriber.
kit_update_Update a broadcast.
kit_update_Update a sequence.
kit_list_List colors
kit_update_Update colors
kit_create_Create a sequence email.
kit_delete_Delete a sequence email.
kit_get_Get a sequence email.
kit_list_List sequence emails.
kit_update_Update a sequence email.
kit_add_Add subscriber to form.
kit_create_Create a snippet.
kit_delete_Delete custom field.
kit_get_Get a snippet.
kit_list_List snippets.
kit_update_Update a custom field.
kit_update_Update a snippet.
kit_delete_Delete a webhook
kit_get_Get a post
Connect Kit to your AI
Credentials off one Kit screen, then an endpoint your client signs into. Nothing to deploy, and nothing to install.
Paste a Kit V4 API key into the API key field. That's the whole flow, with no OAuth popup and no token to refresh. The key is scoped to one Kit account, so the connection stays locked to that account.
API key
••••••••••••3f7aConnectionVerified
Read-only keeps the agent on lists and stats. On full access, require approval for writes so unsubscribing a subscriber or deleting a broadcast or sequence waits for your yes, and load the full catalog for rarer calls.
Full accessRead-only
Expose full catalog
Approval required for writes
Drop the PopMCP URL into Claude, ChatGPT, Codex or any other supported client. It signs in through PopMCP with OAuth, so your Kit credential never leaves the server.
app.popmcp.com/mcp/…
Claude wants to connectApproveAsk for something harmless before you turn writes on. Once it comes back clean, widen the tool set or switch the connection to full access.
Which broadcast last month got the most link clicks?
kit_list_broadcastsok
Then just ask for the work
“Which broadcast last month got the most link clicks?”
- list_broadcasts
- get_stats_for_a_broadcast
- get_link_clicks_for_a_broadcast
“Tag everyone who hasn't opened an email in 90 days as dormant”
- filter_subscribers_based_on_engagement
- create_a_tag
- tag_a_subscriber_by_email_address
“Create a welcome sequence and add everyone who signed up this week”
- create_a_sequence
- list_subscribers
- add_subscriber_to_sequence_by_email_address
“What tags do subscribers who finished my onboarding sequence have?”
- list_sequences
- list_subscribers_for_a_sequence
- list_tags_for_a_subscriber
Use Kit from the assistant you already open
One hosted endpoint, registered once per client. The same tools and the same permissions, whichever window the request comes from.
Claude DesktopCustom connector
Add the PopMCP URL under Settings → Connectors and the tools appear in every chat.
Claude WebCustom connector
The same endpoint, registered in the browser. Nothing to install on the machine you are working from.
ChatGPTCustom connector
Register PopMCP as a custom connector, then let ChatGPT read and update the account.
CodexDesktop & CLI
Wire the endpoint into Codex or the Codex CLI when a task needs live business context, not a fixture.
OpenCodeCoding agent
Register the remote MCP server in OpenCode's config for terminal-first and scripted agent runs.
ZCodeDesktop app
Add PopMCP as an MCP server in Z.ai's desktop app and work the account from the same window.
Explore other MCP servers
Every one of them runs on the same hosted endpoint, with the same controls.
FAQ
Kit MCP server questions
What teams ask before putting Kit behind an AI client.
Which Kit API key does the connection need?
One field, labeled API key, and it takes a Kit V4 API key (Kit was formerly ConvertKit). You paste it once and the MCP server is ready, with no OAuth popups and no token refresh to babysit. The key belongs to a single Kit account, so the connection is locked to that account.
What parts of my Kit account can the agent reach?
Subscribers, including the engagement filter and a single subscriber's tags and stats; tags, with tag and untag by email address or id; custom fields; forms; sequences (courses) and their sequence emails; broadcasts (newsletters) with stats and link clicks; segments; email templates; posts; snippets; account stats and creator profile; and webhooks. Anything outside those 13 API modules is not exposed.
How many Kit operations does the server expose, and do they all load at once?
62 operations across 13 API modules, split 31 read and 31 write. 35 load into your AI client by default and the rest stay searchable, so a niche call may not appear in the tool list until you turn the full catalog on. That default keeps the tool list short enough for a client to reason over.
Can it tag people by email address, or do I need subscriber IDs?
Email address works. Tagging and untagging accept either the email address or the subscriber id, and adding someone to a sequence or a form has an email-address route as well. That matters in practice because the list you paste into an AI chat is usually a column of emails, not Kit ids.
Which Kit events can PopMCP watch?
Webhook events cover a subscriber confirming their email, unsubscribing, hard bouncing, or filing a spam complaint; signups through a form or landing page; a sequence starting or completing; a tag being added or removed; a purchase recorded against a subscriber; and custom fields being created, deleted, or having a value change. There is also a polled check that catches a new subscriber added by any route. The server can create and list webhooks in the account too.
Can I stop the agent from unsubscribing people or deleting a sequence?
Yes. Set the connection to read-only and it can only list and report, which is the right mode if you just want broadcast stats and growth numbers. On full access, turn on approval for writes so destructive calls like unsubscribing a subscriber, deleting a broadcast, or deleting a sequence wait for your explicit yes before they run.
Do I have to run or host the Kit MCP server myself?
No. PopMCP hosts it and gives you a Streamable HTTP MCP URL. There is nothing to deploy, no callback URL to register, and no infrastructure to keep running or patch.
Which AI clients can use this MCP server?
Any client that supports a remote Streamable HTTP MCP server — Claude Desktop, Claude Web, ChatGPT custom connectors, Codex and the Codex CLI, OpenCode and Z.ai's ZCode, as well as editors such as Cursor, Windsurf and Zed. Your client signs in to PopMCP with OAuth; the provider credential never leaves the server.
Why do only 35 of the 62 tools load by default?
Loading 62 tool definitions into every conversation burns context before the work starts. PopMCP loads a curated 35-tool set covering the everyday workflows and keeps the rest searchable, so your AI pulls a specialist tool only when a task needs it. You can switch a connection to the full catalog at any time.
What is the difference between a tool and a trigger?
A tool is something your AI calls — there are 62 here. A trigger is something PopMCP watches for you: 21 Kit events that can start work on the PopMCP side. Triggers never enter your AI client's context, and none of them ask you to paste a callback URL into Kit.
Connect Kit to your AI in minutes
Launch a hosted MCP endpoint for Kit, keep tool access under control, and start testing real workflow prompts right away.