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Trello

Available

This integration is active and ready to use in Frihet.

Connect your Trello boards to Frihet. View boards, lists, and cards directly from your ERP to get project context when invoicing.

What is it for?​

With Trello integrated:

  • View boards — View all your Trello boards from Frihet
  • View lists and cards — Navigate your project structure
  • Context for invoicing — View completed tasks before creating an invoice
  • Centralized visibility — Without switching between applications

Requirements​

  • Active Trello account — trello.com
  • Trello API Key — Obtained from the developer portal
  • Authorization token — Generated when authorizing your application
  • Frihet Pro or higher

Connect Trello with Frihet​

Step 1: Get your API Key​

  1. Go to trello.com/power-ups/admin
  2. Log in to your Trello account
  3. Click New to create a new Power-Up or integration
  4. Fill in the fields:
    • Name: "Frihet ERP"
    • Workspace: Select your workspace
  5. Once created, go to the API Key tab
  6. Copy your API Key

Step 2: Generate a Token​

  1. On the same page, next to the API Key, click the Token link
  2. A Trello authorization page will open
  3. Review the requested permissions and click Allow
  4. Copy the generated Token
Two credentials

You need both: the API Key and the Token. Copy them before continuing.

Step 3: Configure in Frihet​

  1. Go to Settings → Integrations
  2. Search for Trello
  3. Click Connect
  4. Enter your API Key
  5. Enter your Token
  6. Click Verify connection
  7. If correct, you will see your boards listed

How it works​

Frihet uses the Trello REST API with query params authentication:

  1. You provide API Key and Token
  2. Frihet adds both as query parameters in each request: ?key=<api-key>&token=<token>
  3. Boards, lists, and cards are queried on demand
  4. Both credentials are stored encrypted (AES-256-GCM) in Frihet

Synchronized data​

DataDirectionFrequency
BoardsTrello → FrihetOn demand
ListsTrello → FrihetOn demand
CardsTrello → FrihetOn demand
MembersTrello → FrihetWith each query

Use cases​

Freelancer managing projects in Trello​

You have a board per client with columns like "To Do", "In Progress", and "Completed". Before invoicing, you check the completed cards from Frihet to verify which work to include.

Agency with client boards​

Your team works with shared client boards. From Frihet, you can view the status of each board to know when a project is ready for invoicing.

Verify deliverables before invoicing​

Before issuing a project invoice, you check the cards of the corresponding board in Trello from Frihet. You confirm that all deliverables are completed.

Features​

View boards​

  1. From Frihet, access the Trello section
  2. You will see all boards your account has access to
  3. Select a board to view its lists and cards

View lists and cards​

  1. Select a board
  2. Frihet displays the lists (columns) with their cards
  3. Each card shows title, assigned members, and labels
  1. Click on a card to see more details
  2. View the description, checklist, comments, and attachments
  3. Use this information as a reference when creating invoices

API Limits​

Frihet implements automatic throttling (100ms between requests) to respect Trello API limits. Queries to large boards may take a few additional seconds.

Troubleshooting​

"Authentication error"​

  • Verify that the API Key and Token are correct
  • The Token must correspond to the same account as the API Key
  • If you revoked the Token, generate a new one and update it in Frihet

"I don't see all my boards"​

  • Verify that your account has access to those boards in Trello
  • Private boards of other members will not be visible
  • If you are invited to a board, access depends on the board's permissions

"The Token has expired"​

  • Trello tokens do not expire by default unless you configure them to
  • If the token was manually revoked, generate a new one
  • Go to trello.com/power-ups/admin to manage tokens

"I want to disconnect"​

  1. Go to Settings → Integrations → Trello
  2. Click Disconnect
  3. Optionally, revoke the Token from Trello in Settings → Applications

Next steps​