BlockCypher vs TWZRD Agent Intel

Same instrument, two spec sheets — measured, not claimed.

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitRetry-After: 1787sUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

BlockCypher vs TWZRD Agent Intel: common questions

Which is more reliable, BlockCypher or TWZRD Agent Intel?

On our scheduled checks, TWZRD Agent Intel leads on measured uptime — BlockCypher at —% versus TWZRD Agent Intel at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do BlockCypher and TWZRD Agent Intel need an API key?

Neither needs a paid key — BlockCypher is callable with no signup, and TWZRD Agent Intel is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call BlockCypher and TWZRD Agent Intel from the browser?

Neither sends browser-friendly CORS headers reliably, so call BlockCypher and TWZRD Agent Intel from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are BlockCypher and TWZRD Agent Intel free for commercial use?

BlockCypher has unclear commercial terms, and TWZRD Agent Intel has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.