Copy the name and the address. Both go into Claude's connector dialog in a moment.
Name — your choice
wecallio

Connector address
https://wecallio.com/mcp
Add the connector. Open Claude's settings, choose “Add custom connector” at the bottom and enter the name and the address.
Add connector
Confirm access. Sign in or create an account in the new window. After that your phone assistant stays connected.
Get going. Tell your assistant “done”. It checks the connection and offers you a short test call right away.

Using Claude Code in the terminal?

Then this one command is enough:

claude mcp add --transport http callagent https://wecallio.com/mcp

The first call opens the login in your browser.

ChatGPT uses developer mode for this. You enable it once in the ChatGPT settings and then add wecallio as a custom MCP server.

Setup happens in ChatGPT in a browser.

Enable developer mode. Open the settings in ChatGPT, choose “Security and sign-in” and switch on “Developer mode”.
Open ChatGPT
Copy the name and the address. Both go into the dialog for the new MCP server.
Name — your choice
wecallio

MCP server address
https://wecallio.com/mcp
Add the MCP server. Open the plugin page in ChatGPT, choose the plus and enter the name and the server address.
Go to ChatGPT plugins
Confirm access. Sign in to wecallio in the window that opens, or create an account. Then confirm the connection.
Get going. Open a new chat and write, for example: “Check my phone assistant and offer me a test call.”

Where do these steps come from?

They follow OpenAI's current official procedure for custom remote MCP servers in ChatGPT developer mode.

Official OpenAI guide ↗

Gemini connects custom MCP tools through custom apps in Gemini Spark.

Google currently offers this in English only, for eligible Spark users aged 18 and over with a personal Google account in the USA.

Copy the address. You will paste this MCP address into Gemini as a custom app.
MCP server address
https://wecallio.com/mcp
Open Connected Apps. Open Gemini in a browser and go via “Settings & help” to “Connected Apps”. If you do not see it there, look under “Personal Intelligence”.
Open Gemini
Add a custom app. Under “Custom apps for Spark” choose “Add a custom app”, paste in the MCP address and click “Next”.
Confirm access. Sign in to wecallio in the window that opens, or create an account. Then confirm the connection.
Get going. Type @wecallio in Gemini Spark, pick the app and say, for example: “Call my doctor's office and ask for the next free appointment.”

Using the Gemini CLI in the terminal?

Then you can add wecallio for your user with this command:

gemini mcp add --transport http --scope user wecallio https://wecallio.com/mcp

Then start Gemini and run /mcp auth wecallio. The login opens in your browser.

Official Gemini CLI guide ↗

Where do these steps come from?

They follow Google's current official procedure for custom MCP apps in Gemini Spark.

Official Google guide ↗

OpenClaw runs on your own machine and has its own shell. You do not have to click through a settings page — you send your agent a message and it connects itself.

The connection uses OAuth: the login opens automatically in your browser as soon as your agent runs the command.

Copy the message. You will send this straight to your OpenClaw agent in the chat — it runs the commands itself in its own shell.
Message for your agent
Please connect to the MCP server "wecallio" for phone calls: openclaw mcp add wecallio --url https://wecallio.com/mcp --transport streamable-http --auth oauth openclaw mcp login wecallio Open the login link printed by the second command in my browser and confirm access. Then tell me briefly whether the connection is up.
Send it to your agent. Open your OpenClaw chat and paste the message. The agent runs the commands in its own shell — you do not have to type anything into a terminal.
Confirm access. The login link opens in your browser. Sign in to wecallio or create an account and confirm access.
Get going. Once your agent confirms the connection, tell it something like: “Call the garage and ask what an oil change costs.”

Rather type it yourself?

Then these two commands are all it takes:

openclaw mcp add wecallio --url https://wecallio.com/mcp --transport streamable-http --auth oauth
openclaw mcp login wecallio

The second command opens the login in your browser.

Where do these steps come from?

They follow the official OpenClaw CLI reference for remote MCP servers.

Official OpenClaw guide ↗

Hermes Agent runs on your own machine and has access to your files and a shell. Here too a message to your agent is enough — it writes the connection into its own configuration.

As of today Hermes has no command that adds an MCP server directly by URL — your agent edits its own configuration file instead.

Copy the message. You will send this straight to your Hermes agent in the chat — it edits its configuration itself.
Message for your agent
Please connect to the MCP server "wecallio" for phone calls: 1. Add this entry under mcp_servers in ~/.hermes/config.yaml: wecallio: url: "https://wecallio.com/mcp" auth: oauth enabled: true 2. Run hermes mcp login wecallio and open the login link in my browser. 3. Then reload the connection with /reload-mcp. Finally, tell me briefly whether the connection is up.
Send it to your agent. Open your Hermes session and paste the message. It adds the server and signs in — you do not have to open a file yourself.
Confirm access. The login link opens in your browser. Sign in to wecallio or create an account and confirm access.
Get going. Once your agent confirms the connection, tell it something like: “Call my dentist and ask for the next free appointment.”

Rather edit the configuration yourself?

Then add this entry under mcp_servers in ~/.hermes/config.yaml:

wecallio:
  url: "https://wecallio.com/mcp"
  auth: oauth
  enabled: true

Then in the terminal: hermes mcp login wecallio, followed by /reload-mcp in a running session.

Where do these steps come from?

They follow the official Hermes reference for MCP server configuration.

Official Hermes guide ↗

Connect once.Then simply call.

Connect once.
Then simply call.