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Heymarket SMS MCP server

Heymarket is a business texting platform that gives you the power to engage with people using shared inboxes.

Heymarket SMS is not a separate install. One Activepieces MCP server exposes it alongside 760+ other apps, behind a single URL.

Start building See the Heymarket SMS integration
Tools
5
Works with
Any MCP client
Auth
API key
License
MIT, open source
Updated
September 2026

About the Heymarket SMS MCP server

Connect Heymarket SMS once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches Heymarket SMS and 760+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

Heymarket SMS tools your AI can run

Once connected, your assistant can call any of these Heymarket SMS actions by asking in plain language.

  • Create or Update Contact

    Create a new contact or update an existing contact by phone number

    9 fields

  • Send Custom Message

    Send a custom text message to an individual contact or a list

    5 fields

  • Send Template Message

    Send a message using a template to an individual contact or a list

    6 fields

  • Update List

    Update an existing list in your team by adding or removing members, or updating list properties

    5 fields

  • Custom API Call

    Make a custom API call to a specific endpoint

    10 fields

Triggers

Heymarket SMS events your agent can watch

These start a run the moment something happens in Heymarket SMS, so work gets picked up on its own.

  • Conversation Started

    Trigger when a new conversation is started or an existing conversation is updated

    2 fields

  • New or Updated Contact

    Trigger when a new contact is created or an existing contact is updated

Give your assistant Heymarket SMS

Connect Heymarket SMS once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 760+ other apps. Free to start.

Get your server URLTalk to sales

Heymarket SMS MCP, answered.

No. That is the point of it. One Activepieces server exposes Heymarket SMS alongside every other piece you connect, so your client keeps a single connection.

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

Connect Heymarket SMS in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

It can call 5 tools, including Create or Update Contact, Send Custom Message, Send Template Message, and chain them with steps in other apps inside the same run.

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.

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