Read lists, subscribers, tags and texts; send texts and change subscribers in Clearstream. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the Clearstream connector, then ask in plain words. The AI picks the tools.
For churches, non-profits, schools and government organizations that text their members with Clearstream.
Read the account behind the API key. Then list the shortcodes and longcodes that the account can send texts from.
List the subscriber lists with their counts. Open one list to read its counts and sync status, and list the subscribers in it.
Search subscribers by name or mobile number. Open one subscriber to read its opt-in status, lists and tags.
Read the text volume statistics for a date range, with dates as YYYY-MM-DD. Read the text history, incoming or outgoing, and use the cursor for the next page.
Send a text to one or more mobile numbers. Opted-out numbers never receive it. Use it only with explicit written consent from every recipient.
Changes dataAdd one mobile number to a subscriber list. Use it only with explicit written consent from that person. Locked lists cannot change.
Changes dataThe login page asks for your Clearstream API key.
Optional: Account ID for a subaccount key.
Create or copy the key inside your Clearstream account. Clearstream API integrations are for churches, non-profits, schools and government organizations. Only a subaccount key needs the Account ID. 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.
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": {
"clearstream": {
"url": "https://clearstream.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"clearstream": {
"type": "http",
"url": "https://clearstream.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 Clearstream 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.
| 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 Clearstream server only. Subscribe with clearstream_upgrade (it returns a Stripe Checkout link). Cancel any time with clearstream_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running clearstream_upgrade before then undoes the cancel. Or write to [email protected].
clearstream_get_accountclearstream_list_numbersclearstream_list_listsclearstream_get_listclearstream_list_subscribers_of_listclearstream_list_subscribersclearstream_get_subscriberclearstream_list_tagsclearstream_list_textsclearstream_get_text_statsclearstream_send_textclearstream_add_subscriberclearstream_add_subscriber_to_listclearstream_remove_subscriber_from_listclearstream_tag_subscribersclearstream_usage_statusclearstream_request_featureclearstream_upgradeclearstream_cancel_subscriptionCheck the connected account and sending numbers. Review subscriber lists and their counts. Look up one subscriber by mobile number. Review text volume and the text history. Send a text to one or more members. Add a volunteer to a subscriber list. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Clearstream. The server calls the Clearstream API with your own Clearstream 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 Clearstream 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 Clearstream 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 Clearstream 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 Clearstream.
Yes, if you approve it. 5 of the 15 Clearstream tools can create or change data. The other 10 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 Clearstream server only. Cancel any time: Pro then runs to the end of the paid period. Run clearstream_usage_status to see how many calls you used.
Ask the AI to run clearstream_upgrade: it returns a Stripe Checkout link. To cancel, run clearstream_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 clearstream_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.