Blockchain, Crypto & Web3 indexes 1,260 providers publishing 6,690 APIs on the network.
It has the widest quality spread of any vertical covered this week — from 85.2 at the top to 7.3 at the bottom, among providers the network surfaces as notable in the same category.
The cohort
| Provider | APIs | Band | Score |
|---|---|---|---|
| Alpaca | 23 | exemplar | 85.2 |
| Polygon | 12 | exemplar | 76.9 |
| EODHD | 11 | exemplar | 74.4 |
| PAY.JP | 14 | exemplar | 73.2 |
| Solana | 12 | exemplar | 71.8 |
| Twelve Data | 1 | minimal | 7.3 |
Alpaca at 85.2 is the highest score in any vertical covered this week — higher than Salesforce, higher than Trulioo. Twenty-three APIs of brokerage and market-data infrastructure.
Twelve Data at 7.3 publishes one indexed API.
The vertical is really two verticals
Read the cohort and the boundary is obvious: almost none of the top scorers are blockchain companies.
Alpaca is a brokerage. EODHD is end-of-day market data. PAY.JP is Japanese payments. These are financial data and trading infrastructure businesses that get tagged into this vertical because their customers overlap with crypto.
Polygon and Solana are the actual chains, at 76.9 and 71.8 — both strong, both smaller surfaces, both well-described.
What the numbers say is that the best API practice in this vertical comes from regulated financial infrastructure, not from the crypto-native side. That is not a knock on the chains, which score well. It is a statement about who has been held to a standard longest.
What has shifted
Market data is the real product. Five of the six named providers sell data rather than transactions. Whatever the narrative, the durable API businesses here are the ones answering what is the price, what is the volume, what happened — the same business as any other financial data vendor.
The chains describe themselves well. Polygon and Solana both publish tight, well-scored surfaces in the low-to-mid seventies. RPC interfaces are relatively standardised, which helps, and both projects treat developer documentation as a growth channel rather than an afterthought.
The tail is very long and very thin. 1,260 providers and 6,690 APIs means an average of five APIs each, and the distribution is nothing like even. Twelve Data at 7.3 with a single indexed API is representative of a large tail: real companies with real products whose published, machine-readable surface is close to nonexistent.
A note on reading this vertical
Tag-derived verticals surface what providers signal about themselves. A market-data company that tags itself for crypto coverage lands here alongside an L1 chain, and both listings are correct on their own terms.
Treat the vertical as a demand cut — who serves this market — rather than a technology cut. The 78-point spread is partly quality and partly the fact that two quite different industries are being measured on one page.
Takeaway
6,690 APIs across 1,260 providers, topped by a brokerage at 85.2 and floored by a market-data vendor at 7.3. The best API practice in crypto belongs to the regulated financial infrastructure that serves it, and the chains themselves score respectably — while a very long tail publishes almost nothing.
Browse it at apis.io/industries/blockchain-crypto/.