Example: Use MCP OAuth 2.0 sign-in to retrieve job descriptions from Trello

This example shows what you can build with the MCP OAuth 2.0 (Sign-in) authentication method. It is an outbound MCP example using the MCP Server connector.

We'll connect Applaud to Trello, create a tool to retrieve job descriptions from Trello cards, and then grant a specialist agent access to it. Once it's set up, an employee can ask the main assistant for a job description, and the agent can retrieve it from Trello.

Use this tutorial as a starting point and adapt the approach to your own use cases.

What we'll build

We'll create this experience:

Employee → Applaud AI assistant → Job descriptions agent → Trello Read Card tool → Trello

For our example, we used Trello to store job descriptions:

• A board called Job description
• A list for each department
• A card for each available role within the relevant department
• The job description stored on each card

For example, an employee might ask:

I'm interested in the Product Enablement Specialist. Can you send me the job description?

The specialist agent uses the Trello tool to retrieve the relevant card and returns the job description to the employee.

Before you begin

You'll need:

• An Applaud environment where you can create connections, tools, and agents.
• A Trello account with access to the board containing the job descriptions.
• A Trello board with job descriptions stored as cards.

Step 1: Create the MCP connection

First, find the MCP server details for Trello.

For this example, we used:

MCP server URL: https://mcp.trello.com/v1

We created the Applaud connection with the name:

Trello job descriptions

Create the connection

In Applaud:

1. Go to Agents > Tools.
2. Select Add Tool.
3. Select New connection.
4. Select MCP Server.
5. Select MCP OAuth 2.0 (Sign-in).
6. Enter the following connection details:

• Connection name: Trello job descriptions
• Server URL: https://mcp.trello.com/v1

7. Select Add connection.

Connect your account

After creating the connection, you'll be prompted to connect your Trello account.

1. Select Connect account.

2. Review the permissions requested by the connection.
3. Select Accept.

Once your account is connected, Applaud displays the tools available from the Trello MCP server.

Step 2: Create the Trello tool

For this example, we only needed to retrieve the contents of a Trello card.

From the available tools, select:

Trello Read Card

Applaud creates the tool configuration for you. You can adapt the configuration to suit your use case.

Configure the essentials

For this example, we configured the essential tool settings as shown below.

Step 3: Test the tool

Before using the tool with an agent, test that Applaud can successfully retrieve a Trello card.

Use the Get action and provide the required values:

• cardIdOrUrl
• boardIdOrUrl

For this example, we used the Trello URLs directly. Simple URLs work fine, so you don't need to extract the IDs separately.

Select Test.

• If the test succeeds, review the returned card information to ensure you're receiving the data you expect.
• If the test fails, use the test results to identify what needs to be changed. For example, you might need to check the card URL, board URL, or connection permissions.

When you're happy with the result, select Add tool.

Step 4: Create a specialist agent

Now that the Trello tool is working, we'll give it to a specialist agent.

For this example, we created a specialist agent called:

Job descriptions

Attach the new Trello tool under Agent tools.

Configure the agent as shown below.

Save and activate to make the agent available.

Step 5: Test the experience

The final step is to test the complete experience through the main assistant.

Ask a question that should cause the Job descriptions agent to use the Trello tool.

For example:

I'm interested in the Product Enablement Specialist. Can you send me the job description?

The main assistant should route the request to the Job descriptions specialist agent. The agent can then use the Trello Read Card tool to retrieve the relevant card and return the job description.

Your final result should look something like this:

What you can adapt

This example uses Trello to retrieve job descriptions, but the same pattern can be adapted to other use cases.

The important pieces are:

1. Connect to an MCP server using OAuth 2.0 sign-in.
2. Choose the MCP capability you need.
3. Configure and test it as an Applaud tool.
4. Give the tool to a specialist agent that knows when to use it.
5. Let the main assistant route relevant requests to that specialist.