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Particle API Authentication

How to authenticate Particle API requests: one Bearer API key plus a connectionId. MindCloud stores your API key securely — set it once, never resend it.

Every Particle API request through MindCloud needs two things: a MindCloud API Key and a connectionId for your Particle account. This page covers both, plus exactly how to send them, so you do not need to visit any other page to get authenticated.

Steps to authenticate

  1. Create a MindCloud account at app.mindcloud.co if you do not already have one.
  2. Generate a MindCloud API Key in API Keys. This is the Bearer token you send on every request. Keep it on your server.
  3. Create a Particle connection in Connections. Particle uses an API key. You generate the key in your Particle account, then paste it in when you create the connection — MindCloud stores it securely and never returns it in a response.
  4. Copy the connection’s connectionId — you will send it on every request alongside your MindCloud API Key.

How requests are authenticated

Authentication has two layers. Your MindCloud API Key authenticates the request to MindCloud, sent as a Bearer token in the Authorization header. The connectionId selects the connected Particle account that should run the action. MindCloud stores and refreshes the Particle credentials behind that connection, so you never send provider tokens with your requests.

Pass connectionId in the query string for GET and DELETE actions, and in the JSON body for POST, PUT, and PATCH actions.

For example, calling Get Current User with an Particle connection looks like this:

curl --request GET \
  --url "https://connect.mindcloud.co/v1/universal/particle/latest/actions/get-current-user" \
  --header "Authorization: Bearer $MINDCLOUD_API_KEY" \
  --get \
  --data-urlencode "connectionId=$CONNECTION_ID"

The Authorization: Bearer <your MindCloud API Key> header authenticates you to MindCloud; the connectionId tells MindCloud which Particle account to run the action against. Missing or invalid Authorization returns 401, and a missing or mismatched connectionId returns 400.

Connect your Particle account

You need a Particle long-lived access token with permission to call the Particle Cloud API.

  1. Open your Particle account settings

    Sign in to Particle and open the area where access tokens are managed.

    Particle → Account Settings
  2. Create or copy a long-lived access token

    Generate a token that will still be valid after this setup flow completes.

  3. Paste the token into MindCloud

    Enter the token in the connection form when MindCloud asks for your access token.

Keep your key safe

Keep your MindCloud API Key on your server; do not ship it in browser code, mobile apps, public repositories, or logs. Anyone with the key can call the Universal API as your MindCloud account, across every connection you have created.