Check credits, read sent messages, send or cancel scheduled SMS in Spryng. For businesses that send SMS reminders and alerts from a Spryng account. Hosted by usefulapi — connect from Claude, ChatGPT, 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": {
"spryng": {
"url": "https://spryng.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"spryng": {
"type": "http",
"url": "https://spryng.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
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.
Read the credit balance of the account. Check it before you send a large batch of messages.
spryng_get_balance
Filter the sent messages by status failed and by date range. Open one message by id to see its status.
spryng_list_messages spryng_get_message
Filter the sent messages by recipient number or by your own reference. Use the results to answer a customer.
spryng_list_messages
Send one SMS to up to 50 recipients. Use a scheduled time to send it later. Sending spends credits, and a sent message cannot be undone.
Changes data · spryng_send_message
Cancel a scheduled message before Spryng sends it. A message that was already sent cannot be cancelled.
Changes data · spryng_cancel_message
The login page asks for your Spryng REST API key.
Find it in the Spryng portal under Your Profile → Security (generate a REST API key). Your key is used only to call the API on your behalf and to derive a private account id; 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 Spryng REST 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.
Turn on the Spryng connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
spryng_get_balance | read | Get SMS balance Return the credit balance of the Spryng account behind this key. |
spryng_list_messages | read | List messages List SMS messages sent from this account, newest first by default. Filter by status (pending, sent, delivered, failed), recipient number, originator, reference, created or scheduled date range, or country code. |
spryng_get_message | read | Get message Return one SMS message by its Spryng id (UUID), including its status when available. |
spryng_list_subaccounts | read | List subaccounts List the subaccounts of this Spryng account. Filter by active state or a username/email search string. |
spryng_send_message | write | Send SMS Send one SMS to up to 50 recipients. Spends credits and cannot be undone once sent. Use scheduled_at to send later (cancel with spryng_cancel_message before it is sent). |
spryng_cancel_message | write | Cancel scheduled message Cancel a scheduled message before Spryng sends it. A message already sent cannot be cancelled. |
spryng_usage_status | Usage status (free-tier meter) Report the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. | |
spryng_request_feature | Request a missing feature Tell usefulapi that the user needs something the Spryng 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. | |
spryng_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Spryng (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $39/month or $390/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
spryng_cancel_subscription | Cancel the Pro subscription Cancel the caller's Spryng Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run spryng_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this Spryng server only. Subscribe with spryng_upgrade (it returns a Stripe Checkout link). Cancel any time with spryng_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running spryng_upgrade before then undoes the cancel. Or write to [email protected].
Check the SMS credit balance. Find messages that failed to deliver. Trace messages by recipient or reference. Send an SMS now or at a set time. Cancel a scheduled reminder. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Spryng. The server calls the Spryng API with your own Spryng 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 Spryng REST 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 Spryng REST 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 Spryng 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 Spryng.
Yes, if you approve it. 2 of the 6 Spryng tools can create or change data. The other 4 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 unlimited tool calls (fair use limit: 10,000 tool calls a month), for this Spryng server only. Cancel any time: Pro then runs to the end of the paid period. Run spryng_usage_status to see how many calls you used.
Ask the AI to run spryng_upgrade: it returns a Stripe Checkout link. To cancel, run spryng_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 spryng_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.