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Prerequisites

Before setting up your Postman workspace, ensure you have:

Installing Postman

Desktop Application

  1. Visit Postman Downloads
  2. Download the installer for your platform:
    • Windows: .exe installer
    • macOS: .dmg file
    • Linux: .tar.gz or snap package
  3. Run the installer and follow the on-screen instructions

Web Version

Alternatively, use Postman in your browser:
  1. Visit web.postman.com
  2. Sign in or create a free account
  3. Start using Postman directly in your browser

Creating a Workspace

Workspaces help you organise your API collections, environments, and documentation in one place.

Step 1: Create a New Workspace

  1. Open Postman
  2. Click Workspaces in the top left
  3. Click Create Workspace
  4. Enter the workspace details:
    • Name: SCANOSS API Testing
    • Summary: Workspace for testing SCANOSS API endpoints
    • Visibility: Select Personal for individual use or Team for shared access
  5. Click Create Workspace
Create Workspace

Step 2: Create a New Collection

Collections group related API requests together.
  1. In your workspace, click Collections in the left sidebar
  2. Click + or Create a collection
  3. Name it SCANOSS API
  4. Add a description: Collection of SCANOSS API endpoints for security intelligence, cryptography analysis, and component search
  5. Click Create

Setting Up Environment Variables

Environment variables store reusable values such as API keys and base URLs, allowing you to switch between environments without modifying individual requests.

Create an Environment

  1. Click Environments in the left sidebar
  2. Click + or Create Environment
  3. Name it SCANOSS Production
  4. Add the following variables:
Variable NameTypeInitial ValueCurrent Value
base_urldefaulthttps://api.scanoss.comhttps://api.scanoss.com
api_keysecret(leave blank)your-scanoss-api-key
vulnerability_pathdefault/v2/vulnerabilities/v2/vulnerabilities
cryptography_pathdefault/v2/cryptography/v2/cryptography
components_pathdefault/v2/components/v2/components
  1. Click Save

Variable Types Explained

  • default: Visible to collaborators. Use for non-sensitive configuration values.
  • secret: Hidden from collaborators. Use for API keys and passwords.

Initial Value vs Current Value

  • Initial Value: Shared with team members and synchronised to the Postman cloud. Do not store sensitive credentials here when sharing a collection.
  • Current Value: Stored locally on your machine only; never synchronised. Use this field for your actual API key.
Best Practice: When working alone, you may populate both the Initial and Current values with your API key. When sharing a collection with others, leave the Initial Value blank and enter your API key in the Current Value field only.

Configuring Collection Authorisation

Set up authentication at the collection level so that it applies automatically to all requests within the collection.

Step 1: Open Collection Settings

  1. Click on your SCANOSS API collection
  2. Click the (three dots) menu
  3. Select Edit
  4. Go to the Authorization tab

Step 2: Configure API Key Authentication

Terminology note: X-Api-Key is the HTTP header name sent with each request. api_key is the Postman environment variable that holds your key value.
  1. Type: Select API Key from the dropdown
  2. Configure the key:
    • Key: X-Api-Key
    • Value: {{api_key}} (references the environment variable)
    • Add to: Header
  3. Click Save
This configuration automatically adds the X-Api-Key header to all requests in the collection.

Alternative: Per-Request Header Configuration

To add the header manually to individual requests instead:
  1. Open any request and go to the Headers tab
  2. Add a new header:
    • Key: X-Api-Key
    • Value: {{api_key}}

Creating Request Folders

Organise your requests by API category using folders.

Step 1: Create Folders

  1. Hover over your SCANOSS API collection
  2. Click Add folder
  3. Create the following folders:
    • Vulnerability API
    • Cryptography API
    • Component Search
    • Dependency Decoration
    • Raw Output
Note: The Vulnerability API folder corresponds to what the SCANOSS platform also refers to as the Security API in some contexts.

Step 2: Add Descriptions

For each folder:
  1. Click Edit
  2. Add a description:
    • Vulnerability API: Endpoints for retrieving vulnerability data and CPEs
    • Cryptography API: Endpoints for cryptographic algorithm analysis
    • Component Search: Endpoints for searching and retrieving component information
    • Dependency Decoration: Endpoints for enriching dependency data with SCANOSS intelligence
    • Raw Output: Endpoints returning raw scan output for direct fingerprint analysis

Testing Your Setup

Create a Test Request

Verify your configuration with a simple API call.
  1. Right-click the Vulnerability API folder
  2. Select Add request
  3. Name it Get Component CPEs - Test
  4. Configure the request:
    • Method: GET
    • URL: {{base_url}}{{vulnerability_path}}/cpes/component?purl=pkg:github/scanoss/engine&requirement=>=5.0.0
  5. Click Send

Expected Response

A successful request returns a JSON response similar to the following:
{
  "component": {
    "purl": "pkg:github/scanoss/engine",
    "requirement": ">=5.0.0",
    "version": "5.0.0",
    "cpes": ["cpe:2.3:a:scanoss:engine:1.0.0:*:*:*:*:*:*:*"]
  },
  "status": {
    "status": "SUCCESS",
    "message": "CPEs Successfully retrieved"
  }
}

Troubleshooting

401 Unauthorised:
  • Verify that the api_key environment variable contains a valid API key
  • Confirm that the correct environment is selected (dropdown in the top right)
  • Check the Headers tab to confirm the X-Api-Key header is present
404 Not Found:
  • Verify the request URL is correct
  • Check that all environment variables are populated
  • Ensure the base_url value does not have a trailing slash
No Response:
  • Check your internet connection
  • Verify that the SCANOSS API is reachable
  • Open the Postman Console for detailed error output (View → Show Postman Console)

Selecting the Active Environment

To enable environment variable resolution:
  1. Locate the environment dropdown in the top right corner of Postman
  2. Click the dropdown (it may display No Environment)
  3. Select SCANOSS Production
  4. Confirm the environment name is shown in the dropdown

Importing a SCANOSS Collection

If a pre-built SCANOSS API collection file or URL has been provided to you:
  1. Click Import in the top left
  2. Select the Link tab
  3. Paste the collection URL
  4. Click ContinueImport

Import from File

  1. Click Import in the top left
  2. Select the File tab, or drag and drop the file into the import window
  3. Select the collection JSON file
  4. Click Import

Workspace Organisation Tips

Naming Conventions

  • Requests: Use descriptive names such as Get Component Vulnerabilities rather than Request 1
  • Folders: Group by API category or functional workflow
  • Environments: Include the target environment in the name (e.g., SCANOSS Production, SCANOSS Staging)

Documentation

Add documentation to each request:
  1. Select a request
  2. Click the Documentation icon (📄) or tab
  3. Add:
    • Description: What the endpoint does
    • Parameters: Explanation of query parameters and their expected values
    • Example Response: A sample successful response

Using Examples

Save responses as examples for reference and documentation:
  1. After receiving a response, click Save Response
  2. Name the example (e.g., Successful Response or Component Not Found)
  3. Saved examples appear in the right sidebar and in the collection documentation

Collection Variables vs Environment Variables

When to Use Collection Variables

  • Values that are specific to the collection and do not vary between environments
  • Shared path segments or common parameters
  • Mock server URLs

When to Use Environment Variables

  • Values that change between environments (Production, Staging, Development)
  • API keys and authentication tokens
  • Base URLs that differ per environment

Setting Collection Variables

  1. Click on your collection
  2. Go to the Variables tab
  3. Add variables, for example:
    • version: v2
    • timeout: 30000

Best Practices

  1. Use environment variables for credentials: Never hardcode API keys directly in request URLs or headers.
  2. Organise requests into folders: Group related endpoints together to improve navigability.
  3. Document each request: Include a description, parameter definitions, and a sample response for every request.
  4. Save response examples: Capture examples for both success and error scenarios.
  5. Export and version your collections: Regularly export collection and environment JSON files and store them in version control.
  6. Protect sensitive data when sharing: Ensure the Initial Value of secret variables is blank before exporting or sharing a collection.
  7. Write test scripts: Add Postman test scripts to validate response status codes, structure, and field values automatically.

Backing Up Your Workspace

Export Collection

  1. Click on your collection
  2. Select Export
  3. Choose Collection v2.1 (recommended)
  4. Save the JSON file

Export Environment

  1. Click on your environment
  2. Select Export
  3. Save the JSON file
  4. Note: Secret variable values are not included in exports for security reasons.

Cloud Synchronisation

Postman automatically synchronises your workspace to the cloud when you are signed in. To verify:
  1. Check the sync icon in the header
  2. Confirm it shows Synced or a checkmark

Next Steps

With your workspace configured, you can proceed to:
  1. Add requests: Create requests for all SCANOSS API endpoints
  2. Test endpoints: Send requests and review the responses
  3. Write test scripts: Validate response status codes and payloads
  4. Run collection workflows: Use the Collection Runner to execute requests sequentially
  5. Generate documentation: Publish API documentation using Postman’s built-in documentation tools
For detailed examples of API requests, see Sending Requests and Reviewing Results.