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Clicksign API Authentication

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

Every Clicksign API request through MindCloud needs two things: a MindCloud API Key and a connectionId for your Clicksign 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 Clicksign connection in Connections. Clicksign uses an API key. You generate the key in your Clicksign 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 Clicksign account that should run the action. MindCloud stores and refreshes the Clicksign 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 List Envelopes with an Clicksign connection looks like this:

curl --request POST \
  --url "https://connect.mindcloud.co/v2/universal/apps/clicksign/actions/list-envelopes/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 Clicksign account to run the action against. Missing or invalid Authorization returns 401, and a missing or mismatched connectionId returns 400.

Connect your Clicksign Sandbox account

You need a Clicksign Sandbox account. The access token works like a password, so store it securely.

  1. Create a Sandbox account

    Go to https://sandbox.clicksign.com/signup and create a free account for testing.

  2. Open the API settings

    Sign in to Sandbox, then open Configuracoes > API.

  3. Generate an access token

    Click Gerar Access Token, enter a description, and generate the token.

  4. Save the token

    Copy the token and keep it in a secure place. Paste this value into the MindCloud connection as the API key.

  5. Associate your email with the API

    On the same API settings screen, associate your email with the API and save it.

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.