Take the scheme master file. A NAV API can give you a fund's full price history once you know its scheme code - the gap is everything around the scheme: what it is called today, who runs it, which category it sits in, whether it is still alive, how big it is. Reachable through search one query at a time, but painful for screening.
The master is all of it in one file: one row per scheme across every scheme in AMFI's public records from April 2006 onward (tens of thousands of them, including matured and merged funds), carrying the name, AMC, category, plan, option, first and last NAV dates, latest average AUM and latest NAV. About 9 MB as plain CSV, ~1 MB compressed, no key, no sign-up, and it opens in Excel.
Think of it as two files that pair. The scheme master is the reference dimension - use it to pick your universe, screen by category or AMC, or check whether a fund was even alive in your window. The full NAV history download is the fact table. Together they are the same universe that runs the MFPRO app itself.
The first and last NAV dates are the most useful column pair and the most overlooked: they tell you a scheme's real lifespan, which is what stops you asking for a 2025 window on a fund that matured in 2015 and reading the empty response as a bug.
One caution while SEBI's recategorisation works through the data: category labels and scheme names are both moving right now, so join on the scheme code or ISIN, not the name. Get it from the MFPRO app's download screen or fetch it from code: https://www.tigzig.com/mfpro. Full write-up: https://www.tigzig.com/post/mfpro-scheme-master-download-aug2026.
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