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Lemcal API Authentication

How to authenticate Lemcal API requests: one Bearer API key plus a connectionId. MindCloud handles Lemcal's custom auth scheme for you.

Every Lemcal API request through MindCloud needs two things: a MindCloud API Key and a connectionId for your Lemcal 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 Lemcal connection in Connections. Lemcal uses its own authentication scheme. You provide whatever it requires when you create the connection — MindCloud handles the provider-specific details for you.
  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 Lemcal account that should run the action. MindCloud stores and refreshes the Lemcal 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 Validate Authentication with an Lemcal connection looks like this:

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

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

Connect Lemcal with a Base64 authorization value

You need your Lemcal user ID and a valid Lemcal API key.

  1. Build the raw credential string

    Combine your Lemcal user ID, a colon, and your API key as userId:apiKey.

  2. Base64-encode that string

    Encode the full userId:apiKey value with standard Base64 encoding.

  3. Paste only the Base64 value into Authorization Header

    In the MindCloud connection form, paste only the encoded value. Do not include the Basic prefix.

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.