PopMCPClaude Web MCP connector for Shopify, HubSpot and 100+ tools
Add one URL on claude.ai under Customize, then Connectors, and sign in with OAuth. Claude can then read live orders, deals, payments and tickets in any browser. No API keys, and nothing to install.
https://app.popmcp.com/mcp
Connect Claude Web to PopMCP
The steps depend on your Claude plan. Both paths end with the same PopMCP sign-in.
Add PopMCP on a Free, Pro or Max plan
You add the connector yourself on claude.ai. Free accounts get one custom connector, and PopMCP uses that one slot for every tool you connect.
Sign in at app.popmcp.com, connect Shopify, Klaviyo or any other tool, and check each one shows as Verified.
In the Claude desktop app or on claude.ai, go to Customize, then Connectors, click + Add, then Add custom connector.
Name it PopMCP and enter the URL below. There is no token to paste, and the OAuth client ID and secret stay empty.
MCP server URLhttps://app.popmcp.com/mcpIf Claude asks how to register, choose Register automatically. PopMCP supports dynamic client registration, not the Client ID Metadata Documents that Claude's published identity needs.
Click Add and sign in to PopMCP. On the consent screen, tick only the connectors Claude should reach, then authorize.
Turn PopMCP on from the + menu in a chat, then ask Claude to run list_connections before anything that writes.
Try this promptRun list_connections and tell me which tools you can use.
Add PopMCP for a Team or Enterprise organization
An Owner adds the connector once for the organization. Each member then connects with their own PopMCP sign-in, so access follows the person.
Sign in at app.popmcp.com, connect the tools the team uses, and check each one shows as Verified.
An Owner or Primary Owner goes to Organization settings, then Connectors, and selects Add, then Custom, then Web.
Name it PopMCP and enter the URL below. Leave the OAuth client ID and secret empty.
MCP server URLhttps://app.popmcp.com/mcpIf Claude asks how to register, choose Register automatically.
The Owner clicks Add. Each member then opens Customize, then Connectors, finds PopMCP with a Custom label, clicks Connect and signs in to PopMCP.
Each member turns PopMCP on from the + menu in a chat and asks Claude to run list_connections to see what they were granted.
The short answer
Claude on the web supports the Model Context Protocol (MCP) through custom connectors: you give claude.ai the URL of a remote MCP server and Claude can call that server's tools in a chat. PopMCP is a hosted MCP server that puts 100+ business tools behind one URL, https://app.popmcp.com/mcp, so a single custom connector reaches every tool you connect in PopMCP. It works on every Claude plan, and you choose which connectors Claude may use.
What to ask Claude
Claude calls PopMCP's tools, PopMCP reads your connected accounts, and the answer comes back in the chat. The tool names are the real ones Claude calls.
Which Klaviyo campaign drove the most revenue this month?
PopMCP, 2 tool calls
klaviyo_get_campaignsCampaigns sent this monthreadklaviyo_query_campaign_valuesAttributed revenue and open rate per campaignread
The reply is drawn as bars on purpose: the figures come from your own accounts, so this page does not make any up.
More to paste into Claude
- Which Klaviyo campaign made the most revenue this month?
- Compare Meta Ads spend with Shopify revenue for the last 14 days.
- Which Google Ads search terms spent money with no conversions?
- Which pages lost the most organic clicks this month?
- Which queries sit in positions 8 to 15 with rising impressions?
- Break down last week's sessions by channel in GA4.
- Summarize open tickets about refunds and link each to its order.
- Who are our top 10 customers by lifetime spend?
- Find tickets nobody has answered for more than a day.
- List failed Stripe payments from the last 7 days.
- Which invoices are more than 30 days overdue?
- How many subscriptions churned this month?
You decide what Claude can reach
That is set in PopMCP, not in Claude Web. The sign-in ends on a consent screen that lists your connections.
- OAuth sign-in, no API keys
- Claude signs in to PopMCP with OAuth 2.1. There is nothing to paste, and your Shopify or Stripe credentials stay encrypted inside PopMCP.
- You pick the connectors
- The consent screen lists your connections. Claude reaches only the ones you tick.
- Read-only where you want it
- A workspace owner or admin sets each teammate to no access, read, or read and write, per connection.
- Every call is on the record
- Usage shows each request by user, connector and tool. Removing someone's access applies on the next request.
Where PopMCP works in Claude Web
Each row is one place Claude Web runs, and what its vendor says about adding a remote MCP server there.
| Where | Remote MCP | How it signs in |
|---|---|---|
| claude.aiAny desktop browser | Supported | OAuth sign-in, as a custom connector |
| Team and Enterprise organizationsclaude.ai, set up by an Owner | Supported | An Owner adds it once, then each member signs in |
| Claude Desktop appmacOS, Windows | Supported | The same connector, on your Claude account |
| Claude iOS and Android appsiPhone, iPad, Android | Supported | Appears at your next login. Add it on the web first |
Before you connect Claude Web
Four things from Anthropic's help pages that decide how this behaves.
- Free allows one custom connector
- Custom connectors work on Free, Pro, Max, Team and Enterprise, and Free is limited to one. PopMCP's own Free plan also stops at two connections.
- Team members cannot add it themselves
- On Team and Enterprise, an Owner or Primary Owner adds the connector for the organization first. Members only see it after that, with a Custom label.
- Too many tools slows a chat down
- With ten or more connectors active, Anthropic suggests changing Tool access in the + menu from Auto to On demand. PopMCP loads a curated set per tool to keep the list short.
- Research skips the approval prompt
- Anthropic says Claude can call connector tools during research without asking again. Turn off tools that write before you start a research task.
Questions about Claude Web and PopMCP
Answered from Anthropic's documentation, checked on .
How do I add a custom connector in Claude on the web?
On claude.ai, go to Customize, then Connectors, click + Add, then Add custom connector. Enter a name and the remote MCP server URL, such as https://app.popmcp.com/mcp, and click Add.
Can I use Claude custom connectors on the free plan?
Yes, one. Anthropic limits Free accounts to a single custom connector. PopMCP serves every tool you connect through that one connector.
How does a Claude Team or Enterprise organization add PopMCP?
An Owner goes to Organization settings, then Connectors, and selects Add, then Custom, then Web, and enters https://app.popmcp.com/mcp. Each member then clicks Connect in Customize, then Connectors, and signs in to PopMCP with their own account.
Do I need an API key to connect Claude to PopMCP?
No. PopMCP uses OAuth 2.1 sign-in, so Claude never holds an API key. Your Shopify, Klaviyo or Stripe credentials stay encrypted inside PopMCP.
Does the connector also work in Claude Desktop and on mobile?
Yes. A remote connector belongs to your Claude account, so one you add on the web also appears in Claude Desktop, Cowork and the mobile apps at your next login.
Can Claude change data in my tools?
Only where you allow it. In PopMCP a new connection starts read-only until an owner or admin turns on write actions, and each teammate is set to no access, read, or read and write. Claude can also ask before it uses a tool.
Sources
5 references, checked 5 October 2026
Every step on this page comes from these sources. Community sources are labelled, and we used them only where the vendor has not documented a step.
- Claude Help Center: Get started with custom connectors using remote MCPCustom connectors are on Free, Pro, Max, Team and Enterprise with Free limited to one, and Claude connects to the server from Anthropic's cloud.support.claude.com
- Claude Help Center: Use connectors to extend Claude's capabilitiesConnectors are switched on per chat from the + menu, Tool access can be set to On demand, and research can call tools without further approval.support.claude.com
- Claude docs: Add a connector that isn't in the directoryThe path is Customize, Connectors, + Add, Add custom connector, and on Team and Enterprise an Owner adds it under Organization settings with Add, Custom, Web.claude.com
- Claude docs: Get started with connectorsWhere connectors live in Claude and how members connect one an Owner has added.claude.com
- Model Context Protocol: AuthorizationThe MCP OAuth 2.1 flow, with PKCE, protected resource metadata and dynamic client registration, that PopMCP implements.modelcontextprotocol.io
Use the same URL everywhere
Every client adds the same PopMCP URL and signs in with OAuth.
Put 100+ business tools inside Claude
Connect your tools in PopMCP, add the PopMCP URL, and approve the sign-in. There is nothing to install.