SMS and WhatsApp Messaging

Send WhatsApp, SMS, email or voice to a business with the compliance gate enforced.

CommunityOnlineNo sign-inGlobalFreeCan modify data

What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Send WhatsApp, SMS, email or voice to a business with the compliance gate enforced.

    How to connect

    How to connect SMS and WhatsApp Messaging to Claude

    The server address to paste into Claude settings:

    https://hatchloop.dev/mcp/sms-whatsapp-messaging

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect SMS and WhatsApp Messaging to ChatGPT

    The server address to paste into ChatGPT settings:

    https://hatchloop.dev/mcp/sms-whatsapp-messaging

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect SMS and WhatsApp Messaging to Cursor

    The server address to paste into Cursor settings:

    https://hatchloop.dev/mcp/sms-whatsapp-messaging

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (10)

    Raw names from tools/list. Only developers need these.

    find_businessGiven criteria (vertical, location, capability, price band, availability window), return ranked candidate businesses from our supply network. THE NETWORK IS SMALL AND STILL MOSTLY SAMPLE DATA: entries that are not real are named [DEMO] and flagged is_demo - check that field before acting on a result. [free, no key]
    verify_businessLook up what we know about a business in our supply network: its contact channels, capabilities, and when the record was last verified. This is a DIRECTORY LOOKUP - it does not contact the business. [free, no key]
    send_messageSend a message on behalf of an agent's user or an SMB across WhatsApp (free during launch), SMS, email, or voice. Five message types: transactional, reminder, follow_up, notification, marketing. Every send routes through a non-bypassable compliance gate (TCPA, GDPR, CASL, PDPL across 26 jurisdictions) that enforces opt-in consent for marketing/promotional content — marketing without recorded consent is rejected at runtime with a structured… [from $0.02/call, variable] [async→get_outcome]
    send_transactional_confirmationIdempotent transactional messages: OTPs, booking confirmations, payment receipts, cancellation notices. Falls back across configured channels; an unconfigured channel fails honestly rather than reporting a delivery that did not happen. [$0.02/per_call] [async→get_outcome]
    get_statusQuery the current state of any in-flight async operation by operation_id. [free, no key]
    get_outcomeRetrieve the final OutcomeReceipt for a completed operation. [free, no key]
    preview_costReturn an expected cost estimate, latency estimate, and success-probability estimate for a proposed call before execution. Returns the exact price when it is fixed, and a min/max range when the cost depends on channel or outcome. It does not promise an accuracy percentage - check cost_range. [free, no key]
    self_testService health probe: runs 6 internal checks and reports how many passed. Confirms the server is up and responding - it does NOT probe each tool individually. Use to verify connectivity before production use. [free, no key]
    check_complianceFree, instant pre-flight for the compliance gate. Runs the SAME TCPA / GDPR / CASL / CAN-SPAM / 10DLC gate that send_message and call_business run — but in preview mode, so NO message is sent and NO state changes. Tells you whether a (recipient, channel, message_type, content) send would be permitted BEFORE you pay for it, and if not, names the exact rule and how to remediate. Use it to de-risk a paid send the same way check_booking_link… [free, no key]
    get_conversationRead a two-way conversation thread you started: its state, every message exchanged, and how many replies the business has sent. [free, no key]
    SMS and WhatsApp Messaging: connect to Claude, ChatGPT, Cursor · Connectors.fun