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PopNx MCPMCP servers for people who use AI · explained in plain words

Sarbacane MCP by usefulapi

by m190version 1.13.3i★ –iRuns in the cloud
Registry nameio.usefulapi/sarbacane

Install

Overview

Description from the maker (original English)

Read Sarbacane campaigns, stats, lists and blacklists; manage contacts and draft email campaigns.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 3 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • Can do 19 things (tools) sarbacane_get_credits, sarbacane_list_users, sarbacane_list_lists, sarbacane_list_list_fields …
  • The registry lists no key to fill in.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://sarbacane.usefulapi.io/mcp

Run this in your terminal

claude mcp add --transport http sarbacane https://sarbacane.usefulapi.io/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "sarbacane": {
      "url": "https://sarbacane.usefulapi.io/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "sarbacane": {
      "type": "http",
      "url": "https://sarbacane.usefulapi.io/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://sarbacane.usefulapi.io/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • sarbacane_get_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

    Users and pending invitations of the Sarbacane account (name, email, role, team). GET /v1/users.

  • sarbacane_list_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

    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

    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 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 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

    All blacklists (suppression lists) of the account, with their ids. GET /v1/blacklists.

  • sarbacane_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: 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

    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

    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

    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

    Recipients attached to a campaign (personal data: email, phone). GET /v1/campaigns/{campaignId}/recipients.

  • sarbacane_list_webhooks

    Webhook subscriptions of the account: url, display name and subscribed event kinds. GET /v1/webhooks.

  • sarbacane_create_email_campaign

    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 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: load a saved template's content into an email campaign, replacing its content. POST /v1/campaigns/{campaignId}/content.

  • sarbacane_set_campaign_list

    WRITE: import a contact list's contacts as the recipients of a campaign. It does not send the campaign. POST /v1/campaigns/{campaignId}/list.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 55 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 19 tool descriptions and found no hidden instructions to the AI

Compared with others in Chat & emaili

  • More stars than 0% of the other 1765 servers in this category
  • Published to the registry more recently than 96% of the other 1765 servers in this category
  • Basic checks equal to or better than 100% of the other 1765 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Sarbacane MCP by usefulapi safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.13.3) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Vexa

by Vexa-ai

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago
Install

emailmd

by anypost

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

Computer or cloud★ 1,385MITUpdated 31 days ago
Install

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months ago
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Sarbacane MCP by usefulapi

Live endpoint: https://sarbacane.usefulapi.io/mcp · Homepage: https://usefulapi.io/sarbacane

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://sarbacane.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http sarbacane https://sarbacane.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
{

"mcpServers": { "sarbacane": { "url": "https://sarbacane.usefulapi.io/mcp" } } }

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, and the login page asks for your Sarbacane credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/sarbacane/

Tools

ToolTypeWhat it does
sarbacane_get_creditsreadGet remaining credits
sarbacane_list_usersreadList account users
sarbacane_list_listsreadList contact lists
sarbacane_list_list_fieldsreadList a list's custom fields
sarbacane_list_contactsreadList contacts in a list
sarbacane_create_contactwriteAdd a contact to a list
sarbacane_upsert_contactwriteAdd or update a contact
sarbacane_list_blacklistsreadList blacklists
sarbacane_list_blacklist_entriesreadList blacklist entries
sarbacane_add_unsubscriberwriteAdd an unsubscribed contact to a blacklist
sarbacane_list_campaignsreadList campaigns
sarbacane_get_campaignreadGet campaign details
sarbacane_get_campaign_reportreadGet campaign statistics
sarbacane_list_campaign_recipientsreadList a campaign's recipients
sarbacane_list_webhooksreadList webhooks
sarbacane_create_email_campaignwriteCreate an email campaign (draft)
sarbacane_set_campaign_contentwriteSet a draft campaign's content
sarbacane_import_campaign_templatewriteImport a template into a draft campaign
sarbacane_set_campaign_listwriteAttach a contact list to a draft campaign
sarbacane_usage_statusmetaUsage status (free-tier meter)
sarbacane_request_featuremetaRequest a missing feature
sarbacane_upgrademetaUpgrade to Pro or Pro+
sarbacane_cancel_subscriptionmetaCancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro (per account)$9/mo or $90/yr (2 months free)Unlimited*

\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.

Pro covers this 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 support@usefulapi.io.

License

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