Sendlane MCP server

Manage Sendlane lists, contacts, tags and custom fields; read campaign and SMS reports. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.

Connect Sendlane50 free tool calls a month

What can I ask?

Turn on the Sendlane connector, then ask in plain words. The AI picks the tools.

What you can do with Sendlane in Claude and ChatGPT

For e-commerce marketers who send email and SMS campaigns with Sendlane.

Check opens, clicks and revenue of a campaign

The AI reads the report of one email campaign: sent, opens, clicks, bounces, unsubscribes, spam and revenue, for a period you set. It reads SMS reports too.

See who joined or left a list

The AI lists the contacts of a list with state, tags and lifetime value, filtered by creation time, and the contacts who unsubscribed.

Look at one contact's lists, tags and fields

The AI opens a contact with consent, lifetime value, list subscriptions, tags and custom field values.

Review tags and segments with their sizes

The AI lists tags with audience counts and segments with their match rule and last count, and the contacts in one tag or segment.

Add contacts to a list, tag them and set custom fields

The AI adds up to 100 contacts to a list, creating those that do not exist, and puts tags and custom field values on a contact.

Changes data

Unsubscribe or remove a contact

The AI unsubscribes a contact from email marketing, or removes a contact from one list while the contact stays in the account.

Changes data

How do I connect Sendlane?

Before you connect

The login page asks for your Sendlane API v2 token.

In Sendlane open the API section, choose Generate a v2 access token and copy it (it is shown once). Your token is used only to call the Sendlane API on your behalf; it is never shown to anyone.

Claude claude.ai · Desktop

  1. Open Customize → Connectors, then click + Add → Add custom connector.
  2. Enter the name Sendlane and this URL, then click Add:
    https://sendlane.usefulapi.io/mcp
  3. Claude opens the login page: enter your Sendlane API v2 token.
  4. In a chat, click + → Connectors and turn on Sendlane.

Team and Enterprise: an Owner adds the connector for the organization first.

ChatGPT chatgpt.com

  1. Open Plugins, click +, then Add custom MCP server.
  2. Enter the name Sendlane and this URL, choose OAuth as the authentication, confirm the warning and create it:
    https://sendlane.usefulapi.io/mcp
  3. ChatGPT opens the login page: enter your Sendlane API v2 token.
  4. In Plugins, install Sendlane, then choose it in a chat.

No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.

Claude Code

Run this command, then run /mcp in Claude Code to log in:

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

Cursor

Add to Cursor or add this to ~/.cursor/mcp.json:

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

VS Code

Add to VS Code or add this to .vscode/mcp.json:

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

Codex

Run these commands. The second one opens the login page:

codex mcp add sendlane --url https://sendlane.usefulapi.io/mcp
codex mcp login sendlane

Other clients

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.

https://sendlane.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: the login page asks for your Sendlane API v2 token. 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.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Proper user$9/mo · $90/yr10,000 tool calls / month
Pro+per user$39/mo · $390/yr100,000 tool calls / month

Each paid plan covers this Sendlane server only. Ask your AI to run sendlane_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with sendlane_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with sendlane_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

Tools 35

Show all 35 tools (the AI picks them for you)

Read only · 22

  • List listssendlane_list_lists
    List the audience lists of the account: id, name, description, status, created date.
  • Get listsendlane_get_list
    One audience list by id.
  • List contacts of a listsendlane_list_list_contacts
    Contacts on one list: email, name, phone, subscribed/suppressed state, tags, custom fields, lifetime value.
  • List unsubscribed contacts of a listsendlane_list_list_unsubscribed
    Contacts that unsubscribed from one list.
  • List contactssendlane_list_contacts
    All contacts of the account: email, name, phone, lists, tags, custom fields, subscribed/suppressed state. Filter by creation time with from/to.
  • Get contactsendlane_get_contact
    One contact by id, with lists, tags, custom fields, consent, lifetime value and subscribed/suppressed state.
  • List unsubscribed contactssendlane_list_unsubscribed_contacts
    Contacts that unsubscribed from the account.
  • Get contact subscriptionssendlane_get_contact_subscriptions
    The list subscriptions of one contact: list, subscribed/suppressed state, who added it and when.
  • Get contact tagssendlane_get_contact_tags
    The tags on one contact.
  • Get contact custom fieldssendlane_get_contact_custom_fields
    The custom field values of one contact.
  • List tagssendlane_list_tags
    The contact tags of the account: id, name, audience count.
  • Get tagsendlane_get_tag
    One tag by id.
  • List contacts with a tagsendlane_list_tag_contacts
    Contacts that carry one tag.
  • List custom fieldssendlane_list_custom_fields
    The custom contact fields of the account: id, name, type. Use the ids when setting field values.
  • List segmentssendlane_list_segments
    The segments of the account: id, name, list, match rule, last count.
  • List contacts of a segmentsendlane_list_segment_contacts
    Contacts in one segment: id, email, name, phone.
  • List campaignssendlane_list_campaigns
    Email campaigns: id, name, status, scheduled and sent time, automation.
  • Get campaignsendlane_get_campaign
    One email campaign by id.
  • Get campaign reportsendlane_get_campaign_report
    Statistics of one email campaign: sent, opens, clicks (unique too), bounced, suppressed, unsubscribed, spam, revenue. from/to limit the period.
  • List SMS messagessendlane_list_sms_messages
    SMS messages (campaign and automation): id, name, campaign status, automation.
  • Get SMS reportsendlane_get_sms_report
    Statistics of one SMS message: sent, delivered, clicks, failed, replies, unsubscribed, credits, revenue. from/to limit the period.
  • List sender profilessendlane_list_sender_profiles
    The sender profiles (from name, from/reply email, postal address, default flag).

Changes data · 9

  • Create listsendlane_create_list
    WRITE: create an audience list. Not idempotent: calling it twice makes two lists.
  • Update listsendlane_update_list
    WRITE: rename a list and/or change its description (a full update: name is required, an omitted description may be cleared).
  • Add contacts to a listsendlane_add_contacts_to_list
    WRITE: add one or more contacts (up to 100) to a list; a contact that does not exist is created. Each needs an email or a phone. Sendlane accepts the request for processing (HTTP 202). Only add people who agreed to receive marketing.
  • Remove a contact from a listsendlane_remove_contact_from_list
    WRITE: remove one contact from one list (the contact stays in the account).
  • Unsubscribe a contactsendlane_unsubscribe_contact
    WRITE: unsubscribe one contact from email marketing. The contact stops receiving campaigns.
  • Create tagsendlane_create_tag
    WRITE: create a contact tag.
  • Tag a contactsendlane_add_contact_tags
    WRITE: put one or more existing tags on a contact.
  • Untag a contactsendlane_remove_contact_tag
    WRITE: remove one tag from a contact (the tag itself is kept).
  • Set contact custom fieldssendlane_set_contact_custom_fields
    WRITE: add custom field values to a contact. Field ids come from sendlane_list_custom_fields.

Your usefulapi plan · 4

  • Usage status (free-tier meter)sendlane_usage_status
    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.
  • Request a missing featuresendlane_request_feature
    Tell usefulapi that the user needs something the Sendlane 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.
  • Upgrade to Pro or Pro+sendlane_upgrade
    Get a paid plan for Sendlane (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter.
  • Cancel the Pro subscriptionsendlane_cancel_subscription
    Cancel the caller's Sendlane 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 sendlane_upgrade later to undo the cancel before the period ends. Does not count against the meter.

FAQ

What can I do with Sendlane in Claude or ChatGPT?

Check opens, clicks and revenue of a campaign. See who joined or left a list. Look at one contact's lists, tags and fields. Review tags and segments with their sizes. Add contacts to a list, tag them and set custom fields. Unsubscribe or remove a contact. See what you can do for the details.

Is this an official Sendlane product?

No. usefulapi is an independent service. It is not affiliated with or endorsed by Sendlane. The server calls the Sendlane API with your own Sendlane access, so it sees only the data that your account can see.

Can I connect Sendlane to Claude or ChatGPT?

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.

What do I need to connect?

The login page asks for your Sendlane API v2 token. See Before you connect for where to find it.

Do I put my Sendlane key or an Authorization header in the client config?

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 Sendlane API v2 token. 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.

How do you keep my Sendlane credentials?

The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Sendlane 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 Sendlane.

Can the AI change my Sendlane data?

Yes, if you approve it. 9 of the 31 Sendlane tools can create or change data. The other 22 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.

What does it cost?

The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Sendlane server only. Cancel any time: your paid plan then runs to the end of the paid period. Run sendlane_usage_status to see how many calls you used.

How do I subscribe or cancel?

Ask the AI to run sendlane_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run sendlane_cancel_subscription. Your paid plan continues to the end of the paid period.

What if a Sendlane tool that I need is missing?

Tell the AI what you wanted to do. It can send the request with sendlane_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.

Which AI clients can I use?

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.

More Messaging & Communication MCP servers

AbleSignAfrica's TalkingAircallAiSensyAushaBeamerBenchmark EmailBigMarkerBirdBotpressBounceBanBouncifyBulkSMSButtondownCallHippoCastosChaportChatraClearstreamCustomer.ioCuttlyCyberimpactD7 NetworksDemioDialMyCallsDisqusEmailableEmailchefEmailOctopusEmmaEnchargeEnginemailerFeefoFireTextGetResponseGoAffProGoTo WebinarGovDeliveryGrooveiContactKeapLapostaLoopsMagicBellMail BlazeMailBlusterMailchimpMailerCheckMailerLiteMailshakeManyChatMentionMessenteMightyCallMillionVerifierMissiveMoosendNeverBounceNewsMANNotifyreNylasOpenPhonePlacetelrapidmailReferral RockReferralHeroReferrals.comRegiReoon Email VerifierRetainfulReviewshakeRewardfulRinkelRoblyRSS.comSakariSarbacaneSendbirdSendGridSendPostShopper ApprovedSimpleTextingSlickTextSMS EveryoneSMSGlobalsmsmodeSpoke PhoneSpryngSpyFuStibeeStreamSuperchatSuperPhoneTelegramTelzioTermiiText RequestText-Em-AllTextlineTextUsTinyURLTrumpiaUnderChatUserlikeViral LoopsViralSweepVision6Voodoo SMSwebinar.netWebinarKitWhatConvertsWincherZadarma

All Messaging & Communication servers →