What is the update frequency of Grey Market Premium (GMP) data in your API?

Our GMP market intelligence engine continuously polls and updates live grey market premium quotes, percentage estimated listing gains, and Kostak rates every few minutes throughout Indian stock market trading hours.

Which Indian stock exchanges and segments are supported?

We provide 100% complete coverage for both NSE (National Stock Exchange) and BSE (Bombay Stock Exchange), covering both Mainboard public issues as well as SME IPOs listed on BSE SME and NSE Emerge.

How do I authenticate my API requests?

Authentication is straightforward and secure using HTTP request headers. Every API request requires passing your unique credentials via the X-API-KEY and X-API-SECRET headers.

Does the IPO API stream live bidding subscription multiples?

Yes! The /api/ipo/subscription-rates/:ipoId endpoint streams live subscription multiples for QIB, NII (both sNII and bNII), Retail Individual Investors (RII), and Employees directly updated during active exchange bidding sessions.

Can I access historical Basis of Allotment (BoA) data?

Yes. Through the /api/allotment/basis-records/:year/:ipoType endpoint, you can query decade-long registrar records including category-wise allotment ratios, lottery odds, and valid application counts.

Are there any free APIs available?

No, we do not provide free APIs. All our endpoints provide institutional-grade, real-time Indian IPO and GMP data under paid commercial subscriptions (Monthly, Quarterly, or Yearly) to guarantee high availability and sub-15ms edge latency.

What programming languages and frameworks are supported?

Because our service is a standard RESTful JSON API, it is compatible with any language or HTTP client. We provide official code snippets for cURL, JavaScript/TypeScript (Node.js/Axios), Python (Requests), PHP (cURL), and C# (.NET RestSharp).

Market Comparison 2026•Developer Evaluation

Best IPO API in India: Free vs Pro & Alternatives Guide

Building an IPO portal, Telegram alert bot, or algorithmic tracking system in India? Compare your data sourcing options: informal web scrapers, broker APIs (Upstox, Zerodha Kite), and dedicated institutional feeds.

Feature Comparison Matrix: Free vs Broker APIs vs IPO API PRO

Feature / Capability	Free Web Scraping	Broker APIs (Upstox/Zerodha)	IPO API PRO
Mainboard IPO Listings (NSE/BSE)	Fragile (HTML changes break code)	Basic open/close dates	Full price bands, lot size, exchange circulars
SME IPO Listings (BSE SME / NSE Emerge)	Inconsistent coverage	Rarely supported or delayed	100% dedicated SME coverage with lot sizing
Live Grey Market Premium (GMP) Quotes	Scraped from unverified blogs	Not supported (Brokers cannot list GMP)	Verified OTC quotes updated every few minutes
Historical GMP Timeline & Kostak Rates	No historical archive	Not available	Complete day-by-day historical audit trail
Live Category Bidding Multiples (QIB/NII/Retail)	Delayed by hours	Occasionally supported	Real-time exchange book sync every 2 minutes
Application Counts & Lottery Odds (PeopleBase)	Not calculated	Not available	Automatic 1-in-X lottery probability computation
Official Registrar Basis of Allotment (BoA) PDFs	No official documents	Not available	Direct certified registrar PDF repository
Query Latency & Global Edge Caching	2,000ms - 5,000ms	300ms - 800ms	Sub-15ms edge caching across Indian metros
API SLA & Uptime Guarantee	0% (IP bans & CAPTCHAs)	99.0% (Trading session prioritized)	99.99% Enterprise uptime SLA

Why Generic Broker APIs Fail at IPO Intelligence

1. Regulatory Prohibition of GMP

Registered stock brokers regulated by SEBI cannot publish or stream unofficial Grey Market Premium (GMP) quotes. If your product needs live GMP or Kostak rates, broker APIs like Upstox or Zerodha Kite are completely unable to provide this data.

2. Missing SME & Emerge Segments

India's SME public market (BSE SME and NSE Emerge) has exploded in transaction volume. Most generic broker APIs only index Mainboard issues, leaving developers blind to high-growth SME offerings and minimum lot size requirements.

3. No Lottery Odds (PeopleBase)

Under SEBI guidelines, retail IPO shares are allotted by lottery rather than pro-rata. Computing the true odds requires real-time reconciliation of total valid applications against retail quota caps—a feature exclusive to IPO API PRO.

4. Sub-15ms Latency & Edge Reliability

Scraping financial news portals results in fragile scrapers that break whenever HTML structures update. IPO API PRO guarantees 99.99% uptime with sub-15ms cached edge latency across Indian metro hubs.

Frequently Asked Questions

Why can't I use broker APIs like Upstox or Zerodha Kite for IPO data?

Broker APIs are designed primarily for order execution (buy/sell equities) and trading accounts. They do not provide Grey Market Premium (GMP) data (as grey market trading is unofficial and brokers are barred by SEBI from displaying it), lack detailed SME lot sizes, and do not track registrar Basis of Allotment documents or retail lottery odds.

What are the risks of using free web scraping for IPO data in production?

Web scrapers frequently break whenever target websites alter HTML markup, change CSS selectors, or implement Cloudflare bot management. Additionally, scraping websites risks IP blacklisting and introduces 2-5 second latencies that ruin user experience on mobile apps.

Does IPO API PRO offer a free tier?

We offer sandbox documentation, sample mock responses, and commercial subscription packages designed for startups, fintech portals, and algorithmic trading desks requiring sub-15ms guaranteed latency and 99.99% uptime.

Ready to integrate institutional IPO data?

Explore the API documentation or activate your API key instantly.