Read calls, voicemails and journal requests; set requests to Open or Resolved in MightyCall. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the MightyCall connector, then ask in plain words. The AI picks the tools.
For Sales and support teams that take calls and voicemails on MightyCall.
List calls in a time window, then open one call to see the caller, the called parties and the call record.
List voicemails in a time window, filtered by read state, then open one for its caller, time and duration.
List journal requests by direction, outcome or phone number. Open one to read its state, contacts and comment.
Set one or more journal requests to Resolved, or back to Open. This changes live data in the account.
Changes dataList the business phone numbers, and read the profile of the MightyCall user that the key belongs to.
The login page asks for your API key and Secret key (or extension number).
Create the keys in the MightyCall web app under Settings → API. The secret key is the web-app key, or your user extension number if sign-in by key is off. Your keys are used only to call your own MightyCall account and are never shown to anyone.
Team and Enterprise: an Owner adds the connector for the organization first.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"mightycall": {
"url": "https://mightycall.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"mightycall": {
"type": "http",
"url": "https://mightycall.usefulapi.io/mcp"
}
}
} Run these commands. The second one opens the login page:
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your API key and Secret key (or extension number). If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per user | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this MightyCall server only. Ask your AI to run mightycall_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with mightycall_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with mightycall_upgrade before then undoes the cancel. Or write to [email protected].
mightycall_get_profilemightycall_list_phone_numbersmightycall_list_callsmightycall_get_callmightycall_list_voicemailsmightycall_get_voicemailmightycall_list_journal_requestsmightycall_get_journal_requestmightycall_set_workflow_statemightycall_usage_statusmightycall_request_featuremightycall_upgrademightycall_cancel_subscriptionReview missed and recent calls. Review new voicemails. Work through open journal requests. Resolve journal requests after the team handles them. Check business numbers and your extension. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by MightyCall. The server calls the MightyCall API with your own MightyCall access, so it sees only the data that your account can see.
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
The login page asks for your API key and Secret key (or extension number). See Before you connect for where to find them.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your API key and Secret key (or extension number). If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the MightyCall API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in MightyCall.
Yes, if you approve it. 1 of the 9 MightyCall tools can create or change data. The other 8 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this MightyCall server only. Cancel any time: your paid plan then runs to the end of the paid period. Run mightycall_usage_status to see how many calls you used.
Ask the AI to run mightycall_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run mightycall_cancel_subscription. Your paid plan continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with mightycall_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.