First-party app
ClickSend

ClickSend

Send SMS, MMS, voice calls and transactional email, and manage contact lists, via ClickSend.

stable Communication

About

ClickSend ships in the w6w first-party pack. It declares 16 actions, 2 health checks, and the host runs its code in a sandbox that never sees the credential.

App id
io.w6w.clicksend
Version
0.1.1
Author
w6w
Licence
MIT
Categories
Communication

Overview

ClickSend puts several outbound communication channels behind one account and one credential, and this app covers the ones a workflow is most likely to reach for: SMS, MMS, voice calls and transactional email, plus the contact lists that feed them.

Every send reports back what it actually cost — message parts, price, and per-recipient delivery status — so a workflow can see whether a longer message quietly split into extra billed segments, or whether one recipient in a batch failed while the rest went through, rather than assuming a single message and a single price for every send. Voice messages are read from text with a selectable language and voice, and a companion action lists which pairings ClickSend actually supports before a call is placed.

Bulk and campaign-oriented sending, fax, physical mail, and account administration aren’t part of this app — it stays focused on sending a message and knowing what happened to it, and reading and building the contact lists a workflow sends to.

Build with ClickSend

Three routes to the same 16 actions. The Workflow tab is generated from ClickSend's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.

Get Account

account-get

Get the current account's details and balance (GET /account).

Get Account Usage

account-usage-get

Get per-channel usage and spend for a calendar month (GET /account/usage/{year}/{month}/subaccount).

Create Contact

contact-create

Add a contact to a Contact List (POST /lists/{list_id}/contacts). At least one of Phone, Fax or Email is required.

Create Contact List

contact-list-create

Create a new Contact List (POST /lists).

List Contact Lists

contact-list-list

List Contact Lists (GET /lists).

List Countries

countries-list

List the ISO 3166 alpha-2 country codes ClickSend recognizes (GET /countries). Public — no Connection required.

List Email Addresses

email-address-list

List verified sender addresses for Send Transactional Email (GET /email/addresses).

List MMS History

mms-history-list

List sent/received MMS history (GET /mms/history), newest activity first.

Send Transactional Email

send-email

Send a transactional email via ClickSend (POST /email/send).

Send MMS

send-mms

Send a single MMS message via ClickSend (POST /mms/send).

Send SMS

send-sms

Send a single SMS message via ClickSend (POST /sms/send).

Send Voice Call

send-voice

Place a text-to-speech voice call via ClickSend (POST /voice/send).

Cancel Scheduled SMS

sms-cancel

Cancel a scheduled SMS before it sends (PUT /sms/{message_id}/cancel).

List SMS History

sms-history-list

List sent/received SMS history (GET /sms/history), newest activity first.

Cancel Scheduled Voice Call

voice-cancel

Cancel a scheduled voice call before it's placed (PUT /voice/{message_id}/cancel).

List Voice Languages

voice-languages-list

List the language codes and supported genders for Send Voice Call (GET /voice/lang).

A workflow step names the app and the action, and the editor fills in the connection when you pick one. This is the Step shape from the workflow spec, carrying ClickSend's real ids.

{
  "manifestVersion": "2",
  "name": "clicksend-example",
  "steps": [
    {
      "id": "contact-create",
      "uses": {
        "app": "io.w6w.clicksend",
        "action": "contact-create",
        "connection": "conn_YOUR_CONNECTION_ID"
      },
      "with": {
        "listId": "<listId>"
      }
    }
  ]
}

Here are some of the things you can do

  • Create Contact

    perform
    contact-create
  • Get Account

    read
    account-get
  • Get Account Usage

    read
    account-usage-get
  • Create Contact List

    perform
    contact-list-create
  • List Contact Lists

    read
    contact-list-list

+11 more actions available

Every app-specific value here is a blank you have to fill in. An app action is reached through the connection that authenticates it, so the address is a connection id, not the app id — and connections belong to your account, so a public page cannot know yours. Create one for ClickSend, then fill in the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the parameters that action declares. The call itself is real — the shape is transcribed from the studio's own snippet builder, which prints the same kind of blanks — but nothing in it is specific to ClickSend. The Workflow tab is where this app's real ids are.

Install
npm install @w6w/sdk
yarn add @w6w/sdk
pnpm add @w6w/sdk
deno add npm:@w6w/sdk
Code
import { W6wClient, isActionRun } from "@w6w/sdk";

// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();

const envelope = await client.run({
  urn: "conn_YOUR_CONNECTION_ID",
  action: "contact-create",
  payload: {
    listId: "<value>",
    // phoneNumber: "<value>",
    // faxNumber: "<value>",
    // email: "<value>",
    // firstName: "<value>",
    // lastName: "<value>",
    // organizationName: "<value>",
    // custom1: "<value>",
    // custom2: "<value>",
    // custom3: "<value>",
    // custom4: "<value>",
    // addressLine1: "<value>",
    // addressLine2: "<value>",
    // addressCity: "<value>",
    // addressState: "<value>",
    // addressPostalCode: "<value>",
    // addressCountry: "<value>",
  },
});

if (isActionRun(envelope)) console.log(envelope.value);
Install the CLI
npm install -g @w6w/cli
CLI
w6w run conn_YOUR_CONNECTION_ID --action contact-create --payload '{"listId":"<value>"}'

Give an AI agent ClickSend — without giving it ClickSend's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.

One tool call
{
  "name": "w6w_invoke",
  "arguments": {
    "ref": "app:io.w6w.clicksend#contact-create",
    "input": {
      "listId": "<listId>"
    }
  }
}

Every tool names its target with a single ref. The app: form above doesn't name a connection at all — the host resolves which of the caller's ClickSend connections to sign with, and refuses rather than guesses when the answer is ambiguous.

What the agent gets

Credentials it can't read

The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.

A tool surface scoped to the caller

Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.

A durable workflow in one call

Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.

Health-aware discovery

ClickSend's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.

The MCP surface is part of the hosted platform. ClickSend itself is MIT, and the runtime that executes it is source-available (FSL).

Request MCP access

Health checks

ClickSend declares its own checks, so its health is a property of the app rather than something the host guesses at.

service

ClickSend platform status

Atlassian Statuspage rollup for status.clicksend.com, weighted on the REST API component, with per-channel detail (SMS/MMS/Voice/Fax/Email). Unauthenticated and unsigned.

quota

API rate limit headroom

Per-account request rate limit, read from the x-ratelimit-* response headers on the account usage call (undocumented but present on every ClickSend response).