API client tooling
Postman
Section titled “Postman”Download the Vantrace Evaluate Postman collection.
After importing it, set these collection variables:
| Variable | Value |
|---|---|
baseUrl |
Your authorized environment base URL |
apiKey |
Your environment API key |
hmacSecret |
Your environment HMAC secret |
The pre-request script serializes the JSON body, computes the HMAC-SHA256 signature, sets X-Signature-Version: v2, creates the current timestamp, and generates a fresh request UUID. The secret remains a local collection variable; do not sync or export it with a populated value.