Userlist MCP server
8 operations14 webhooks
Customer messaging with Userlist - push users, companies, relationships and events, send transactional email and in-app messages, and receive webhooks for user, company, relationship, form and message activity.
Try Userlist with your agent
Connect Userlist, then paste this into Claude, ChatGPT or Cursor. For ideas from other apps, see the use cases.
Using Corsair, show me what you can do in Userlist on my account, then run one read-only example and show me the result.
Userlist tools and triggers
Tools are what your agent can do in Userlist through Corsair's MCP server. Triggers are the Userlist events a routine can start from.
Companies
- DeleteDestructive
Delete a company, leaving its users in place; only the relationships go
companies.delete
- UpsertWrite
Create or update a company by identifier, with a name and custom properties
companies.upsert
Relationships
- DeleteDestructive
Unlink one user from one company, leaving both objects in place; the relationship properties, such as a role, are lost
relationships.delete
- UpsertWrite
Tie a user to a company, with properties on the relationship such as a role
relationships.upsert
Users
- DeleteDestructive
Delete a user along with their relationships and events; queued, and not reversible
users.delete
- UpsertWrite
Create or update a user by identifier or email, with properties, companies, relationships and topic preferences; queued, not applied at once
users.upsert
Events
- CreateWrite
Record an event against a user, a company or both, with properties and an optional past timestamp
events.create
Messages
- SendWrite
Queue a transactional email or in-app message, from a template or with an inline subject and body
messages.send
Connect Userlist to Claude, ChatGPT or Cursor
- 1
Connect Userlist in Corsair
Add your Userlist API key once in Corsair. Corsair stores the credential encrypted and makes the Userlist API calls for your agent, so it never goes into a prompt or a config file. Connect Userlist
If your link lets the agent add apps, you can skip this: it gives you a sign-in link the first time it needs Userlist. On a ChatGPT personal plan, connect Userlist here first.
- 2
Add Corsair's MCP server to your agent
Every client uses the same address:
https://mcp.corsair.dev/mcpOpen Customize → Connectors → Add custom connector, paste the address, then select Connect.Add a custom MCP server with the address and choose OAuth. Personal plans get read tools only.Add to CursorOr add this to~/.cursor/mcp.json. Cursor opens Corsair to sign in the first time it connects.{ "mcpServers": { "corsair": { "url": "https://mcp.corsair.dev/mcp" } } }Run this, then run/mcpin Claude Code to sign in.claude mcp add --transport http corsair https://mcp.corsair.dev/mcpCodex, Gemini CLI, VS Code, Zed and other clients with OAuth sign-in work the same way. Clients without it, such as GitHub Copilot's coding agent, use a link's own address and an API key. Setup for every client
- 3
Sign in and choose what needs your approval
Your client opens Corsair to sign in. Pick a link: the apps your agent can use and a mode that decides what it may do without asking. In the default Cautious mode, Userlist's read and write operations run right away and its 3 destructive operations wait for your approval. Strict mode asks before every write and refuses destructive operations, and Read mode allows reads only.
FAQ
Install corsair and @corsair-dev/userlist, add the Userlist plugin, and connect with an API key. Then call methods like corsair.userlist.api.companies.delete() from your app. Corsair verifies webhooks, and keeps each tenant isolated.
Yes. Userlist requires an API key from your Userlist account or developer dashboard. Create credentials with access that matches what you automate, then paste them into Corsair or connect through managed auth in Hub.
Yes. One Corsair client can hit Userlist, GitHub, Notion, Stripe, and the rest. Trigger Userlist from a webhook, push updates to Slack, or chain actions across plugins. Same tenant context across integrations, plain TypeScript.
Teams use Corsair for customer messaging with Userlist - push users, companies, relationships and events, send transactional email and in-app messages, and receive webhooks for user, company, relationship, form and message activity. Common builds include sync jobs, admin tooling, and agents that call Userlist APIs from your backend. Webhook handlers react to Userlist events and fan out to Slack, email, or other plugins in the same tenant.
The SDK is open source. Self-host and you pay Corsair nothing for the integration layer. Hub bills for hosted auth and execution, not per Userlist API call. Hub has a generous free tier. For hobby projects you can probably run the whole thing on free. Paid plans start to matter with more tenants or heavier traffic.
We maintain @corsair-dev/userlist in the open repo. When Userlist ships API changes, upgrade the package. Your call sites stay typed. You should not need to rewrite the integration layer each time.
No. Corsair does not read your Userlist data or hold individual access credentials. Credentials stay in your database. API calls run on your instance. We do not store Userlist data on your behalf.
Yes. Add https://mcp.corsair.dev/mcp as a custom connector or MCP server in Claude, ChatGPT, Cursor, VS Code, Claude Code, Codex or any client that supports remote MCP servers with OAuth sign-in, then sign in to Corsair. On ChatGPT personal plans, custom servers currently get read tools only.
Yes. Put Userlist on a link in Strict mode and every write waits for your approval, while destructive actions are refused. The default Cautious mode asks only before the 3 destructive Userlist operations. You can change a link's mode at hub.corsair.dev/me.