Read Voodoo SMS credits, reports, inbox and lists; send one SMS; manage the opt-out blacklist. Hosted by usefulapi — connect from Claude, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"voodoo-sms": {
"url": "https://voodoo-sms.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"voodoo-sms": {
"type": "http",
"url": "https://voodoo-sms.usefulapi.io/mcp"
}
}
}Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
The login page asks for your Voodoo SMS API key.
Create it in the Voodoo SMS portal under Send SMS → API SMS → RESTful API → Create New API Key and copy it when it is shown (it is shown only once). Choose Read-only if you only want reports and lists, or Read-write to let the AI send SMS (which uses your credits). Do not lock the key to an IP address. Your key is used only to call the Voodoo SMS API on your behalf; it is never shown to anyone.
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 Voodoo SMS API key. 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.
| Tool | Type | What it does |
|---|---|---|
voodoosms_get_credits | read | Get credit balance Get the SMS credit balance of the account. One credit pays for one 160-character SMS part (153 characters per part in a long message). Voodoo SMS REST: GET /credits. |
voodoosms_list_delivery_reports | read | List delivery reports List delivery reports of sent messages (message_id, sender_id, to, sent_at, delivered_at, price, status), optionally filtered. Use it to check whether a message was delivered. Dates accept a UNIX timestamp, ISO 8601 (2026-10-01T09:00:00+00:00) or plain English ('yesterday', '2 weeks'). Voodoo SMS REST: GET /report. |
voodoosms_list_scheduled_messages | read | List scheduled messages List SMS that were scheduled through the send API and are still waiting to go out (messages scheduled in the portal's Web SMS are not shown). Voodoo SMS REST: GET /schedule. |
voodoosms_list_inbox | read | List received SMS List SMS received on the account's Virtual Mobile Numbers (replies and keyword messages). Needs a purchased number; an empty inbox returns an empty result. Dates accept a UNIX timestamp, ISO 8601 or plain English. Voodoo SMS REST: GET /inbox. |
voodoosms_list_numbers | read | List virtual mobile numbers List the Virtual Mobile Numbers (VMNs) the account has purchased, used to receive SMS. Returns an empty result if there are none. Voodoo SMS REST: GET /numbers. |
voodoosms_list_contact_lists | read | List contact lists List the account's contact lists (id, name, status, size, created/updated times) without their contacts. Returns an empty result if there are none. Voodoo SMS REST: GET /contacts. |
voodoosms_get_contact_list | read | Get contacts in a list Get one contact list including its contacts (id, number, status, dynamic_data, created_at). Voodoo SMS REST: GET /contacts?contact_list_id=. |
voodoosms_list_blacklist | read | List blacklisted numbers List the numbers on the account's opt-out blacklist (no SMS is ever sent to them), or look up one number (`{empty: true}` means it is not on the list). Returns an empty result when the blacklist is empty. Voodoo SMS REST: GET /blacklist. |
voodoosms_send_sms | write | Send an SMS to one recipient WRITE: SENDS A REAL SMS to ONE recipient and USES THE ACCOUNT'S CREDITS (1 credit per message part, charged whether or not it is delivered; it cannot be undone). `sandbox` is required: true validates and prices the message without sending or charging, false sends it for real. Optional `schedule` queues it for later (cancel with cancel_scheduled_message). Do not retry after an error or timeout without checking list_delivery_reports / list_scheduled_messages, or the recipient may get it twice. One recipient per call; there is no bulk or list send. Voodoo SMS REST: POST /sendsms. |
voodoosms_cancel_scheduled_message | write | Cancel a scheduled SMS WRITE: cancels one SMS that was scheduled through the send API, so it will not be sent. A message that has already gone out cannot be cancelled. Whether credits are refunded for a cancelled message is not documented by the vendor. Voodoo SMS REST: DELETE /schedule/{id}. |
voodoosms_add_to_blacklist | write | Add a number to the blacklist WRITE: adds one number to the account's opt-out blacklist; from then on no SMS is sent to it (sends to it fail with error 20). Use it for a recipient who asked to stop. This tool cannot remove a number again. Voodoo SMS REST: POST /blacklist. |
voodoosms_create_contact_list | write | Create a contact list WRITE: creates a new contact list with up to 500 contacts (the list name must be unique, at most 32 characters). It does not send anything. Voodoo SMS REST: POST /contacts. |
voodoosms_update_contact_list | write | Rename a contact list or add contacts WRITE: renames a contact list and/or adds up to 500 contacts to it (existing contacts are not removed). Adding dynamic data needs a list created as dynamic. It does not send anything. Voodoo SMS REST: PUT /contacts/{contact_list_id}. |
voodoosms_usage_status | Usage status (free-tier meter) Report the caller's current free-tier usage this month: calls used, monthly limit, remaining, and whether the cap is reached. Read-only; does not count against the meter. | |
voodoosms_request_feature | Request a missing feature Tell usefulapi that the user needs something the Voodoo SMS tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
voodoosms_upgrade | Upgrade to Pro (unlimited) Subscribe to the Pro plan for UNLIMITED Voodoo SMS tool calls (the free tier caps monthly usage). Choose monthly ($9/month) or yearly ($90/year — 2 months free) billing. Returns a Stripe Checkout link to open in your browser; after payment your account upgrades automatically. Does not count against the meter. | |
voodoosms_cancel_subscription | Cancel the Pro subscription Cancel the caller's Voodoo SMS Pro subscription at the end of the paid period (no refund for the current period; unlimited calls continue until then, then the free tier applies). Requires confirm: true. Run voodoosms_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 100 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited |
Pro covers this Voodoo SMS server only. Subscribe with voodoosms_upgrade (it returns a Stripe Checkout link). Cancel any time with voodoosms_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running voodoosms_upgrade before then undoes the cancel. Or write to [email protected].
No. usefulapi is an independent service. It is not affiliated with or endorsed by Voodoo SMS. The server calls the Voodoo SMS API with your own Voodoo SMS access, so it sees only the data that your account can see.
The login page asks for your Voodoo SMS API key. See Before you connect for where to find it.
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 Voodoo SMS API key. 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 Voodoo SMS 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 Voodoo SMS.
Yes, if you approve it. 5 of the 13 Voodoo SMS 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 100 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls, for this Voodoo SMS server only. Run voodoosms_usage_status to see how many calls you used.
Ask the AI to run voodoosms_upgrade: it returns a Stripe Checkout link. To cancel, run voodoosms_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with voodoosms_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, 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.