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Connectors · Email & messaging

Omnisend MCP server for AI agents.

actionlake is an MCP gateway: one remote MCP server that connects Claude and other MCP clients to Omnisend and the rest of your systems. It gives your agent 103 Omnisend actions (44 reads, 41 writes and 18 that wait for a confirmation) and holds the Omnisend credential itself, so the agent never does. It paces Omnisend's limits and records every call.

Connect Omnisend freeSee pricing

100,000 free calls a month. No card, no email, no password: press Start a free sandbox on the next screen and keep the key it shows you.

claude mcp add --transport http actionlake https://connect.actionlake.com/mcp
the first call
do {  action: "omnisend.contacts.list",  intent: "check which Omnisend account is connected"}# List contacts · read · 1 upstream call
  • 103actionsin one signed file
  • 44readlook, never change
  • 41writecreate and update
  • 18wait for a yesdestructive, confirmed first

Set up

Connect Omnisend in three steps.

  1. 01

    Add actionlake to Claude.

    Run the command once in Claude Code; its consent page can create a free sandbox: 100,000 calls a month, no card. In the Claude app, add a custom connector with the URL below and paste your key on the consent page. Creating a new sandbox from the Claude app is not yet tested by us.

    https://connect.actionlake.com/mcp
  2. 02

    Connect Omnisend.

    API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead. actionlake stores what you paste write-only, sealed under your tenant's key.

    • api_keyOmnisend API key (Store settings > API keys), with the scopes the actions need
    account { op: "connections.requirements", service: "omnisend" }
# free: exactly what to paste, and what is found for you
  3. 03

    Make the first call. Check before a write.

    Ask in plain words; Claude picks the action. Before anything changes, check validates the call and prices it, for free.

    do    { action: "omnisend.contacts.list" }# list contacts · read · 1 upstream callcheck { action: "omnisend.contacts.update", input: { … } }# free: inputs, permissions, cost and confirmations, nothing sent

Omnisend at a glance

Sign-in
API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead.
You provide
api_key
Limits we pace to
400 calls a minute, per connection
API covered
Omnisend REST API 2026-03-15 (Omnisend-Version header)api.omnisend.com
Built from
Omnisend's documentation, read 23 October 2026api-docs.omnisend.comapi-docs.omnisend.com
Service file
Version 1.0.0, signed (Ed25519)
Cached reads
37 of 44 reads, for up to 5 minutes; a write clears what it affects
Shared entities
1, so ask can line Omnisend up with your other systems
Data
Processed and stored in Sydney, Australia. No US region yet

Capabilities

What an AI agent can do in Omnisend.

103 actions in 19 areas. Every one carries its effect, so a key can allow the reads and hold the rest.

  • 44readlook, never change
  • 41writecreate and update
  • 18destructivewait for a confirmation

  1. Campaigns

    15

    3 read · 9 write · 3 destructive

    List campaigns with filtering, sorting, and cursor pagination · Get campaign · Create campaign · Update campaign (draft status only)

  2. Automations

    13

    4 read · 7 write · 2 destructive

    List automation workflows · Get automation workflow · Create automation workflow · Patch automation workflow

  3. Forms

    12

    7 read · 4 write · 1 destructive

    List forms · Get form · Create form · Update form

  4. Email templates

    7

    3 read · 2 write · 2 destructive

    Get email templates · Get email template · Create email template · Delete email template

  5. Form ab setups

    6

    2 read · 3 write · 1 destructive

    List form A/B setups · Get a form A/B setup · Create a form A/B setup · Select a form A/B setup winner

  6. Segments

    6

    3 read · 2 write · 1 destructive

    List segments · Get segment · Create segment · Update segment

  7. Contacts

    5

    2 read · 3 write · 0 destructive

    List contacts · Get contact · Update contact by ID · Create or update existing contact

  8. Email universal layouts

    5

    2 read · 1 write · 2 destructive

    Get universal layouts · Get universal layout · Create universal layout · Delete universal layout

11 more areas · 34 actions
  • Product categories 5
  • Products 5
  • Batches 4
  • Images 4
  • Email content 3
  • Event metadata 3
  • Form templates 3
  • Analytics 2
  • Brands 2
  • Contact tags 2
  • Events 1

Top actions

The Omnisend API, shaped for agents.

The ids your agent types, what each does, and the one name it shares with other systems. 38 of Omnisend's 38 action names are shared with at least one other connector, so an agent learns them once.

ActionWhat it doesEffectSame name in
omnisend.contacts.listList contactsList contacts.readcrm.contact.list177 connectors
omnisend.contacts.getGet contactGet contact.readcrm.contact.get176 connectors
omnisend.campaigns.listList campaigns with filtering, sorting, and cursor paginationList campaigns with filtering, sorting, and cursor pagination.readcomm.campaign.list41 connectors
omnisend.email_templates.listGet email templatesGet email templates.readcomm.email_template.list40 connectors
omnisend.products.listList productsList products.readcommerce.product.list112 connectors
omnisend.campaigns.getGet campaignGet campaign.readcomm.campaign.get39 connectors
omnisend.email_templates.getGet email templateGet email template.readcomm.email_template.get38 connectors
omnisend.products.getGet productGet product.readcommerce.product.get112 connectors
omnisend.contacts.updateUpdate contact by IDUpdate contact by ID.writecrm.contact.update159 connectors
omnisend.campaigns.createCreate campaignCreate campaign.writecomm.campaign.create38 connectors
omnisend.email_templates.createCreate email templateCreate email template.writecomm.email_template.create34 connectors
omnisend.email_templates.deleteDelete email templateDelete email template.destructivecomm.email_template.delete33 connectors

Try it

Prompts to paste into Claude.

Each one names the Omnisend actions it will call, so you know what it reads and what it changes before you send it.

  1. Readread

    Find the Omnisend contacts with no email address, so we can clean them up.

    callsomnisend.contacts.list

  2. Writewrite

    Update contact by ID in Omnisend. Show me exactly what you will send before you save it.

    callsomnisend.contacts.update

  3. Across systemsread

    Which contacts are in both Omnisend and HaloPSA, and how many are in only one of them?

    callsomnisend.contacts.listhalopsa.users.list

Across your systems

Omnisend, joined to the rest of your business.

One ask fetches from Omnisend and another system, joins the rows on the same customer on our side, and hands your agent the answer, not every row.

  • Which contacts are in both Omnisend and HaloPSA, and how many are in only one of them?

    omnisend.contacts.list + halopsa.users.list, on crm.contact · HaloPSA

  • Which contacts are in both Omnisend and NetSuite, and how many are in only one of them?

    omnisend.contacts.list + netsuite.views.contacts, on crm.contact · NetSuite

Also mapped by other connectorscrm.contact 192
ask
ask {  intent: "which contacts are in both Omnisend and HaloPSA, and how many are in only one of them",  steps: [    { action: "omnisend.contacts.list", as: "people", input: {}, limit: 100, max_pages: 5 },    { action: "halopsa.users.list", as: "people2", input: {}, limit: 100, max_pages: 5 },    { join: {        left: "people",        right: "people2",        on: "crm.contact",        group_by: "people.email",        select: ["people.email", "count(people2.id) as in_halopsa"]    } }  ]}
Example. Run it through check first: it validates the steps and prices them, and it is free.

Governance for Omnisend

Destructive actions wait for a yes.

18 Omnisend actions are destructive. These are all of them:

  • Delete email templateomnisend.email_templates.delete
  • Delete campaignomnisend.campaigns.delete
  • Delete productomnisend.products.delete
  • Cancel campaignomnisend.campaigns.cancel
  • Delete product categoryomnisend.product_categories.delete
  • Delete automation workflowomnisend.automations.delete
  • Delete formomnisend.forms.delete
  • Delete segmentomnisend.segments.delete
  • Delete imageomnisend.images.delete
  • Send campaignomnisend.campaigns.send
  • Replace productomnisend.products.replace
  • Batch remove tagsomnisend.contact_tags.remove
  • Update email contentomnisend.email_content.replace
  • Delete a form A/B setupomnisend.form_ab_setups.delete
  • Update email templateomnisend.email_templates.replace
  • Replace automation workflow blocksomnisend.automations.replace_blocks
  • Delete universal layoutomnisend.email_universal_layouts.delete
  • Update universal layoutomnisend.email_universal_layouts.replace

A destructive action runs only with confirm: true. Under the human policy the agent cannot confirm for itself: the run stops until a named person approves, in the console or from a signed link in an email. The cap on a key is refused before the call is sent, never after.

doomnisend.email_templates.deleteconfirm_policy: human

Delete email template?

intent: the user asked me to delete email template

run suspended · waiting for a named person · key omnisend-agent cannot confirm itself
In the console, or from an emailed signed link.
a key for this connector
account {  op: "keys.create", name: "omnisend-agent",  allowed_actions: ["omnisend.*"], cap_calls: 2000,  confirm_policy: "human_for_writes",  approval_rules: [    { match: "omnisend.email_templates.delete", approver: "[email protected]" },    { match: "omnisend.campaigns.delete", approver: "[email protected]" },    { match: "omnisend.products.delete", approver: "[email protected]" }  ]}
Illustrative. Scoped to Omnisend only, capped at 2,000 upstream calls, every write confirmed, and the destructive ones approved by a named person.

Cost

What Omnisend costs on actionlake.

Every Omnisend action is one upstream call, the only thing actionlake bills. Searching, check, cost, account and any call Omnisend refused with 401, 403, 429 or a 5xx are free. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

  • 1upstream call per actionall 103 Omnisend actions
  • 14actions pageeach page of a long list is one call
  • 37reads can be cacheda cache hit costs nothing
  • 100,000calls a month, freepaid plans from US$49 a month for 250,000

See pricing

Action index

Every Omnisend action.

103 actions by area: the id your agent calls, what it does, and its effect.

Campaigns15
  • omnisend.campaigns.cancelCancel campaigndestructive
  • omnisend.campaigns.copyCopy campaignwrite
  • omnisend.campaigns.createCreate campaignwrite
  • omnisend.campaigns.deleteDelete campaigndestructive
  • omnisend.campaigns.getGet campaignread
  • omnisend.campaigns.get_utmGet campaign UTM settingsread
  • omnisend.campaigns.listList campaigns with filtering, sorting, and cursor paginationread
  • omnisend.campaigns.restore_to_draftRestore campaign to draftwrite
  • omnisend.campaigns.resume_ab_testResume A/B testwrite
  • omnisend.campaigns.select_ab_test_winnerSelect A/B test winnerwrite
  • omnisend.campaigns.sendSend campaigndestructive
  • omnisend.campaigns.send_test_emailSend campaign test emailwrite
  • omnisend.campaigns.stop_ab_testStop A/B testwrite
  • omnisend.campaigns.updateUpdate campaign (draft status only)write
  • omnisend.campaigns.update_utmUpdate campaign UTM settingswrite
Automations13
  • omnisend.automations.copyCopy automation workflowwrite
  • omnisend.automations.createCreate automation workflowwrite
  • omnisend.automations.deleteDelete automation workflowdestructive
  • omnisend.automations.disableDisable automation workflowwrite
  • omnisend.automations.enableEnable automation workflowwrite
  • omnisend.automations.getGet automation workflowread
  • omnisend.automations.get_block_utmGet UTM tags for an automation blockread
  • omnisend.automations.get_utmGet aggregated UTM tags for all blocksread
  • omnisend.automations.listList automation workflowsread
  • omnisend.automations.replace_blocksReplace automation workflow blocksdestructive
  • omnisend.automations.send_block_test_emailSend test emailwrite
  • omnisend.automations.updatePatch automation workflowwrite
  • omnisend.automations.update_block_utmUpdate UTM tags for an automation blockwrite
Forms12
  • omnisend.forms.createCreate formwrite
  • omnisend.forms.deleteDelete formdestructive
  • omnisend.forms.disableDisable formwrite
  • omnisend.forms.enableEnable formwrite
  • omnisend.forms.getGet formread
  • omnisend.forms.get_periodic_reportGet form periodic reportread
  • omnisend.forms.get_reportGet form reportread
  • omnisend.forms.listList formsread
  • omnisend.forms.list_ab_setup_reportsList A/B setup reports for a formread
  • omnisend.forms.list_submitted_contactsGet form submitted contactsread
  • omnisend.forms.renderRender a formread
  • omnisend.forms.updateUpdate formwrite
Email templates7
  • omnisend.email_templates.createCreate email templatewrite
  • omnisend.email_templates.deleteDelete email templatedestructive
  • omnisend.email_templates.getGet email templateread
  • omnisend.email_templates.import_htmlImport email template from HTMLwrite
  • omnisend.email_templates.listGet email templatesread
  • omnisend.email_templates.renderRender email templateread
  • omnisend.email_templates.replaceUpdate email templatedestructive
Form ab setups6
  • omnisend.form_ab_setups.createCreate a form A/B setupwrite
  • omnisend.form_ab_setups.deleteDelete a form A/B setupdestructive
  • omnisend.form_ab_setups.getGet a form A/B setupread
  • omnisend.form_ab_setups.listList form A/B setupsread
  • omnisend.form_ab_setups.select_winnerSelect a form A/B setup winnerwrite
  • omnisend.form_ab_setups.startStart a form A/B setupwrite
Segments6
  • omnisend.segments.createCreate segmentwrite
  • omnisend.segments.deleteDelete segmentdestructive
  • omnisend.segments.getGet segmentread
  • omnisend.segments.get_statisticsGet segment statisticsread
  • omnisend.segments.listList segmentsread
  • omnisend.segments.updateUpdate segmentwrite
Contacts5
  • omnisend.contacts.create_or_updateCreate or update existing contactwrite
  • omnisend.contacts.getGet contactread
  • omnisend.contacts.listList contactsread
  • omnisend.contacts.updateUpdate contact by IDwrite
  • omnisend.contacts.update_by_emailUpdate contact by emailwrite
Email universal layouts5
  • omnisend.email_universal_layouts.createCreate universal layoutwrite
  • omnisend.email_universal_layouts.deleteDelete universal layoutdestructive
  • omnisend.email_universal_layouts.getGet universal layoutread
  • omnisend.email_universal_layouts.listGet universal layoutsread
  • omnisend.email_universal_layouts.replaceUpdate universal layoutdestructive
Product categories5
  • omnisend.product_categories.createCreate product categorywrite
  • omnisend.product_categories.deleteDelete product categorydestructive
  • omnisend.product_categories.getGet product categoryread
  • omnisend.product_categories.listList product categoriesread
  • omnisend.product_categories.updateUpdate product categorywrite
Products5
  • omnisend.products.createCreate productwrite
  • omnisend.products.deleteDelete productdestructive
  • omnisend.products.getGet productread
  • omnisend.products.listList productsread
  • omnisend.products.replaceReplace productdestructive
Batches4
  • omnisend.batches.createCreate batchwrite
  • omnisend.batches.getGet batch informationread
  • omnisend.batches.get_itemsGet batch itemsread
  • omnisend.batches.listGet batchesread
Images4
  • omnisend.images.createUpload image by URLwrite
  • omnisend.images.deleteDelete imagedestructive
  • omnisend.images.getGet imageread
  • omnisend.images.listList imagesread
Email content3
  • omnisend.email_content.getGet email contentread
  • omnisend.email_content.renderRender email contentread
  • omnisend.email_content.replaceUpdate email contentdestructive
Event metadata3
  • omnisend.event_metadata.createCreate custom event metadatawrite
  • omnisend.event_metadata.queryQuery events metadataread
  • omnisend.event_metadata.updateUpdate custom event metadatawrite
Form templates3
  • omnisend.form_templates.getGet templateread
  • omnisend.form_templates.listList form templatesread
  • omnisend.form_templates.renderRender a form templateread
Analytics2
  • omnisend.analytics.generate_reportGenerate reportread
  • omnisend.analytics.generate_statisticsGenerate reportread
Brands2
  • omnisend.brands.connect_currentConnect brandwrite
  • omnisend.brands.get_currentGet information about brandread
Contact tags2
  • omnisend.contact_tags.addBatch add tagswrite
  • omnisend.contact_tags.removeBatch remove tagsdestructive
Events1
  • omnisend.events.sendSend Customer eventwrite

Questions

The Omnisend MCP server, answered.

Is there an Omnisend MCP server for Claude?

Yes. actionlake is an MCP gateway: a remote MCP server that gives Claude, or another MCP client, 103 Omnisend actions across campaigns, automations, forms and email templates, through the same eight tools it uses for every other connector. actionlake is independent; it is not made or endorsed by Omnisend.

What do I need to connect Omnisend?

Omnisend API key (Store settings > API keys), with the scopes the actions need. The free call account { op: "connections.requirements", service: "omnisend" } lists exactly what to paste.

Can an AI agent delete or change things in Omnisend?

Only if its key allows it, and only with an explicit confirmation. 18 Omnisend actions are destructive, including delete email template, delete campaign and delete product. Each runs only with confirm: true. Under the human confirm policy, or an approval rule on the key, the run waits until a named person approves it.

Will an AI agent use up my Omnisend API limit?

actionlake paces every call to the limits in the Omnisend service file: 400 calls a minute per connection. Repeated reads are answered from cache (37 Omnisend actions can be), which never reaches Omnisend.

What does an Omnisend action cost?

One upstream call, the only unit actionlake bills. A list that pages bills one call per page (14 Omnisend actions page). Cache hits, searches, dry runs and calls Omnisend refused with 401, 403, 429 or a 5xx are free. The Free plan includes 100,000 calls a month with no card. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000.

Which Omnisend API does it cover?

The Omnisend REST API 2026-03-15 (Omnisend-Version header) at api.omnisend.com. It is built from Omnisend's documentation as read on 23 October 2026. 103 actions in 19 areas, each one in the signed service file (version 1.0.0).

Can I combine Omnisend with my other systems?

Yes. ask joins Omnisend to HaloPSA or NetSuite on the same customer and returns the answer rather than every row. Omnisend maps crm.contact, which 192 other connectors also map.

Does actionlake keep my Omnisend data, and where?

actionlake processes and stores data in Sydney, Australia; there is no US region yet. Reads may be cached for up to 5 minutes, and a write clears the reads it affects. Each run's request and response is kept, sealed, for your plan's trace window: 1 day on Free, 3 days on Starter, 7 days on Pro, 14 days on Team, 30 days on Business and 30 days on Enterprise. Your Omnisend credential is sealed under your tenant's key, never logged and never returned. Your traffic is not used to train models.

Which AI clients can use it?

Claude Code, tested by us end to end, and the Claude app as a custom connector, tested by us with an existing key. Other MCP clients that support remote servers over Streamable HTTP (MCP revisions 2025-06-18 and 2025-11-25) and OAuth dynamic client registration, or a bearer header, should connect the same way; we have not tested them. Or plain REST, under the same action names.

More connectors like Omnisend

Shares the most action names with

Joins with, on shared entities

Browse

actionlake is independent. It is not made or endorsed by Omnisend; the name is the vendor's own. Counts are from the Omnisend service file, version 1.0.0.

Give your agent Omnisend today.

Connect Omnisend freeSee pricing

Start free - 100,000 calls/month, no card. No signup. Hard caps on every key. Cached answers are free.