Connect SoloWOS to Claude or ChatGPT

The connector uses the Model Context Protocol (MCP), the open standard Claude, ChatGPT and other assistants use to talk to outside apps. Once it's connected, the assistant can look up your contacts, invoices, proposals, bookings, forms and expenses, and with your permission create drafts and send them. It only reaches the one workspace you pick, and you can cut it off from SoloWOS at any time.

What you need

• A SoloWOS account on any plan, Basic included, or on its 14-day free trial. Start your free trial if you don't have one yet (it needs a card).
• Claude or ChatGPT on a plan that lets you add your own connectors. Both apps change what each plan includes, so check their help pages if you don't see the option.
• The server URL: https://solowos.com/api/mcp. It's also in Settings > Advanced > Connected apps, with a copy button.

Connect Claude

1. In Claude, open your settings and go to the connectors section.
2. Add a custom connector. Give it a name, like SoloWOS, and paste https://solowos.com/api/mcp as the URL.
3. Claude opens a SoloWOS page. Sign in if you aren't already, pick the workspace, choose Read or Read and act, and click Allow.
4. Back in Claude, turn the connector on for a chat and ask a question, for example "Who owes me money?".

Connect ChatGPT

1. In ChatGPT, open the settings where you manage connectors. Depending on your plan, you may have to turn on developer mode before you can add your own.
2. Create a connector with https://solowos.com/api/mcp as the server URL and OAuth as the authentication.
3. ChatGPT opens a SoloWOS page. Sign in, pick the workspace, choose the access and click Allow.
4. Start a chat with the connector turned on and ask your question.

What each access level allows

Creating is always a draft. Sending is a separate step that SoloWOS marks as one the assistant must confirm with you, and it only sends a draft to the client already on it. Plan limits work as they do in the app: on Basic, 5 invoices and 3 proposals sent a month.

Example prompts

• "Who owes me money, and what's overdue?"
• "What's on my schedule this week?"
• "Draft a $3,000 invoice for Ana for the photo session."
• "Which proposals did clients open but not answer?"
• "How much did I spend on software this year?"
• "Send me the booking link for my intro call."
• "Make a short link to my portfolio and add a task to my board to post it on Friday."

See and revoke connected apps

Settings > Advanced > Connected apps lists every app connected to the workspace, with its access and when it was last used. Revoke stops the app on its next request. Every change an assistant makes is recorded with the app's name. To connect a second workspace, add the connector again and pick the other workspace on the SoloWOS page.

For developers

The server speaks MCP over Streamable HTTP and uses OAuth 2.1 with dynamic client registration and PKCE, so any MCP client that supports remote servers can connect. On Solo and Team, an API key from Settings > Advanced > Developers also works as a bearer token: a read-only key gives Read, a read and write key gives Read and act. Each connection can make 120 requests and 30 changes a minute. The SoloWOS API covers the same data over REST.