Read Sarbacane campaigns, stats, lists and blacklists; manage contacts and draft email campaigns. 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": {
"sarbacane": {
"url": "https://sarbacane.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"sarbacane": {
"type": "http",
"url": "https://sarbacane.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.
The login page asks for your Account id and API key.
In Sarbacane Suite open Settings → API, enable the API and create a key; the account id is shown next to it (see developers.sarbacane.com). API access depends on your plan. Your credentials are used only to call the Sarbacane API on your behalf; they are 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 Account id and 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 Sarbacane connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
sarbacane_get_credits | read | Get remaining credits The account's remaining credits per type (email campaigns, SMS, eye tracking, Sendkit emails) with expiry date and subscription type. GET /v1/credits. |
sarbacane_list_users | read | List account users Users and pending invitations of the Sarbacane account (name, email, role, team). GET /v1/users. |
sarbacane_list_lists | read | List contact lists All contact lists of the account, with their ids. Use the ids for contacts, fields and campaigns. GET /v1/lists. |
sarbacane_list_list_fields | read | List a list's custom fields The custom fields (columns) of a contact list: id, caption and type (STRING, BOOL, INT, DATE). Field ids are the keys used when writing contacts. GET /v1/lists/{listId}/fields. |
sarbacane_list_contacts | read | List contacts in a list Contacts of one list (personal data: email, phone, custom fields). Filter by email, phone, a text search across fields, or the modification date. GET /v1/lists/{listId}/contacts. |
sarbacane_create_contact | write | Add a contact to a list WRITE: add a contact to a contact list. Give an email, a phone number or both, and optional custom field values. Adds a new record; use sarbacane_upsert_contact to update an existing contact. POST /v1/lists/{listId}/contacts. |
sarbacane_upsert_contact | write | Add or update a contact WRITE: add a contact to a list, or update it when the same email/phone pair already exists (custom field values are overwritten). POST /v1/lists/{listId}/contacts/upsert. |
sarbacane_list_blacklists | read | List blacklists All blacklists (suppression lists) of the account, with their ids. GET /v1/blacklists. |
sarbacane_list_blacklist_entries | read | List blacklist entries Entries of a blacklist by kind: bounces (invalid addresses), unsubscribers or complaints (personal data: email, phone). Filter by email, phone or modification date. GET /v1/blacklists/{blacklistId}/{bounces|unsubscribers|complaints}. |
sarbacane_add_unsubscriber | write | Add an unsubscribed contact to a blacklist WRITE: record an email and/or phone as unsubscribed in a blacklist, so campaigns using that blacklist skip it. Cannot be undone with these tools. POST /v1/blacklists/{blacklistId}/unsubscribers. |
sarbacane_list_campaigns | read | List campaigns Campaigns of the account (id, name, kind, created/edited, recipient count). Filter by state or a text in the name or subject. GET /v1/campaigns. |
sarbacane_get_campaign | read | Get campaign details One campaign: state, kind, blacklists, send ids, sent date. The send id is needed to see content. GET /v1/campaigns/{campaignId}. |
sarbacane_get_campaign_report | read | Get campaign statistics Statistics of a campaign per send: delivered count, opens, openers, clicks, clickers, unsubscribers, devices and operating systems. GET /v1/reports/{campaignId}. |
sarbacane_list_campaign_recipients | read | List a campaign's recipients Recipients attached to a campaign (personal data: email, phone). GET /v1/campaigns/{campaignId}/recipients. |
sarbacane_list_webhooks | read | List webhooks Webhook subscriptions of the account: url, display name and subscribed event kinds. GET /v1/webhooks. |
sarbacane_create_email_campaign | write | Create an email campaign (draft) WRITE: create a new email campaign as a DRAFT. It is never sent by these tools: add content (sarbacane_set_campaign_content or sarbacane_import_campaign_template) and a contact list (sarbacane_set_campaign_list), then send it from Sarbacane. POST /v1/campaigns/email. |
sarbacane_set_campaign_content | write | Set a draft campaign's content WRITE: set the HTML (and optional plain-text) content of an email campaign's send, replacing what was there. Without send_id the campaign's only send is used (an A/B test campaign has several: pass one). POST /v1/campaigns/{campaignId}/send/{sendId}/content. |
sarbacane_import_campaign_template | write | Import a template into a draft campaign WRITE: load a saved template's content into an email campaign, replacing its content. POST /v1/campaigns/{campaignId}/content. |
sarbacane_set_campaign_list | write | Attach a contact list to a draft campaign WRITE: import a contact list's contacts as the recipients of a campaign. It does not send the campaign. POST /v1/campaigns/{campaignId}/list. |
sarbacane_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. | |
sarbacane_request_feature | Request a missing feature Tell usefulapi that the user needs something the Sarbacane 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. | |
sarbacane_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Sarbacane (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. | |
sarbacane_cancel_subscription | Cancel the Pro subscription Cancel the caller's Sarbacane 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 sarbacane_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 account | $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 Sarbacane server only. Subscribe with sarbacane_upgrade (it returns a Stripe Checkout link). Cancel any time with sarbacane_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running sarbacane_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 Sarbacane. The server calls the Sarbacane API with your own Sarbacane 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 Account id and API key. 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 Account id and 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 Sarbacane 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 Sarbacane.
Yes, if you approve it. 7 of the 19 Sarbacane tools can create or change data. The other 12 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 Sarbacane server only. Cancel any time: Pro then runs to the end of the paid period. Run sarbacane_usage_status to see how many calls you used.
Ask the AI to run sarbacane_upgrade: it returns a Stripe Checkout link. To cancel, run sarbacane_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 sarbacane_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.