Assembly.com API Documentation

This is the complete API documentation for connecting to the Assembly.com API using MindCloud's Universal API. If you are new to MindCloud, start with the Introduction to see how one API can sit in front of many different apps.

MindCloud is an integration company that offers one normalized API to access 3,100+ apps from a single place. It cleans up provider-specific quirks, keeps requests and responses consistent, and centralizes authentication so you do not need to manage separate flows for every app. Browse other apps.

Meet Assembly.com: Manage clients, tasks, contracts, invoices, and messages. Keep reading to get started.

Quickstart

Before you run your first Assembly.com request, you need three things:

1. A MindCloud account — sign in or create an account at MindCloud.
2. A MindCloud API Key — create one in API Keys. Keep it on your server.
3. At least one Assembly.com connection — create or choose one in Connections. Note its connectionId.

Every Assembly.com action uses the same URL pattern:

POST https://connect.mindcloud.co/v2/universal/apps/assemblycom/actions/{actionSlug}/run

You need a MindCloud API Key and a Assembly.com connection. Then call an action such as List App Installs:

curl --request POST \
  --url "https://connect.mindcloud.co/v2/universal/apps/assemblycom/actions/list-app-installs/run" \
  --header "Authorization: Bearer $MINDCLOUD_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
  "connectionId": "$CONNECTION_ID",
  "arguments": {}
}'

Every response comes back in the same envelope, with your rows in a data array:

{
  "success": true,
  "data": [
    { "id": "1042", "name": "Ava" }
  ],
  "meta": {}
}

After your first request works, use Shape your requests to control arguments, pagination, filtering, fields, and errors.

Authenticate with a MindCloud API Key plus a connectionId for your Assembly.com account. See Assembly.com API Authentication for the full flow and how to get your connection credentials.

Assembly.com actions

All 28 published actions for this Assembly.com version. Each page documents the endpoint, arguments, and response controls.

• PUTCancel Subscription
• POSTCreate Client
• POSTCreate Invoice
• POSTCreate Message Channel
• POSTCreate Note
• POSTCreate Subscription
• POSTCreate Task
• GETList App Installs
• GETList Clients
• GETList Companies
• GETList Contracts
• GETList Invoices
• GETList Message Channels
• GETList Messages
• GETList Notes
• GETList Payments
• GETList Subscriptions
• GETList Tasks
• GETRetrieve Client
• GETRetrieve Company
• GETRetrieve Contract
• GETRetrieve Invoice
• GETRetrieve Task
• POSTSend Contract
• POSTSend Message
• PUTUpdate Client
• PUTUpdate Company
• PUTUpdate Task

Related apps

More Sales & CRM apps on the Universal API, behind the same REST shape. Or browse all apps.

PipedriveGoogle TasksGoogle ContactsTodoistZoho CRMFollow Up BossCloseDubsado