GST API for Microsoft Dynamics 365

What is the GST API for Microsoft Dynamics 365?

For Microsoft Dynamics 365 Business Central, the WhiteBooks GST extension is published on AppSource. It surfaces in the Tax → GST menu and exposes return filing, GSTR-2B fetch, GSTIN verification, and HSN search as native D365 actions.

For Dynamics 365 Finance & Operations (F&O), a Power Platform-based connector exposes WhiteBooks API calls as Power Automate steps — enabling no-code workflow automation around GST compliance events.

Quick spec

• Endpoint: POST /api/v1/gstr1/file
• Auth: OAuth 2.0 bearer token
• Production base: https://api.whitebooks.in/gst
• Sandbox base: https://apisandbox.whitebooks.in/gst
• Format: JSON in / JSON out
• SLA: 99.99% uptime · p95 < 350ms

Code examples

curl -X POST 'https://apisandbox.whitebooks.in/gst/api/v1/gstr1/file' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{ /* payload */ }'

const res = await fetch('https://apisandbox.whitebooks.in/gst/api/v1/gstr1/file', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer ' + accessToken,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(payload),
});
const data = await res.json();

import requests

resp = requests.post(
    'https://apisandbox.whitebooks.in/gst/api/v1/gstr1/file',
    headers={'Authorization': f'Bearer {access_token}'},
    json=payload,
)
data = resp.json()

HttpRequest req = HttpRequest.newBuilder()
    .uri(URI.create("https://apisandbox.whitebooks.in/gst/api/v1/gstr1/file"))
    .header("Authorization", "Bearer " + accessToken)
    .header("Content-Type", "application/json")
    .post(BodyPublishers.ofString(payload))
    .build();
HttpResponse<String> resp = HttpClient.newHttpClient()
    .send(req, BodyHandlers.ofString());

Integrate in 3 steps

1. Sign up at accounts.whitebooks.in — sandbox credentials issued instantly, no sales gate.
2. Make your first call against the sandbox base URL using the code example above. Validate against your local model.
3. Move to production once your tests pass — switch host to https://api.whitebooks.in/gst. Same payload, same response shape.

Frequently asked questions

Explore the full GST API

This is one endpoint inside the WhiteBooks GST API suite. See the full documentation — every endpoint, every parameter, every error code.

Related GST API endpoints