Mercury Reviews

1. Veeresh G T

   · Founder at Vepapu · over 3 years ago
   The best for Non-Residents

   The best in the market for helping US non-residents get a checking bank account for their US companies. Mercury's secure experience takes founders to another level in their global journey.

   🏁 Competitors: Vepapu

   👍 Pros:    Free pricing|Place for non-residents

FastAPI Reviews

1. Kurslog team

   · Working at Kurslog · 5 months ago

   When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding.

   The combination of Pydantic for data validation and built-in async support keeps our shared codebase clean, strictly typed, and reliable. But the biggest highlight for our cross-functional team is the automatic generation of interactive OpenAPI (Swagger) documentation. Our frontend and mobile developers no longer have to wait for backend engineers to manually update API docs; everything stays perfectly in sync automatically. It has drastically improved our team's communication and delivery speed.

   🏁 Competitors: Django, Flask, ExpressJS, Nest.js, Spring Boot

   👍 Pros:    Blazing fast performance (on par with nodejs and go)|Native asynchronous support out of the box|Automatic, interactive documentation generation (swagger/redoc)|Strict typing and data validation with pydantic

   👎 Cons:    Smaller plug-and-play ecosystem compared to older frameworks like django|Requires our architects to design the project structure and directory layout from scratch

Mercury mentions (37)

• How to Form a US LLC as a Non-Resident (2026 Complete Guide)

  Banking and payment processor access. Stripe, PayPal, and most US processors require a US entity. An LLC with an EIN gets you into Mercury, Relay, Wise Business, and other neobanks that accept non-resident founders. See Mercury vs Wise vs Relay for a full comparison. For many founders, banking access is the real reason they form the LLC. - Source: dev.to / 4 months ago

• Sonos CEO Patrick Spence steps down after app update debacle

  Interestingly, Mercury [0] is VC-backed, and their backend is entirely Haskell. In an interview [1], their CTO mentions that it’s actually quite easy to hire for Haskell, as the demand is much lower than the supply, and, as he slyly puts it, “interest in Haskell acts as a decent proxy for baseline developer quality.” So while the pool is larger for JS/TS and Python, that may not always be beneficial. [0]:... - Source: Hacker News / over 1 year ago

• Haskell vs. Ada vs. C++ vs. an Experiment in Software Prototyping Productivity [pdf]

  I work on one of the largest Haskell codebases in the world that I know of (https://mercury.com/). We're in the ballpark of 1.5 million lines of proprietary code built and deployed as effectively a single executable, and of course if you included open source libraries and stuff that we have built or depend on, it would be larger. I can't really speak to your problem domain, but I feel like we do a lot with what we... - Source: Hacker News / over 1 year ago

• Privacy/secruity experience with RBFCU? (Randolph Brooks Credit Union)

  Not just a fintech front for a privacy dis-respecting bank (like Mercury business banking for example). Source: over 2 years ago

• The Meaning of Monad in MonadTrans

  Mercury (https://mercury.com/) uses Haskell extensively for pretty much all of its backend systems. It’s a great general purpose language. - Source: Hacker News / about 3 years ago

FastAPI mentions (312)

• I Built My First Machine Learning API — Here's Everything I Learned

  I used FastAPI, a Python framework built specifically for creating APIs quickly, with automatic validation and interactive documentation baked in. - Source: dev.to / 6 days ago

• Shipping Sovereign SDK: Cryptographic Forensic Receipts and the End of the AI "Prose Tax"

  The Sovereign SDK is a Python-native framework designed to minimize prose overhead while generating ironclad, cryptographic execution receipts for AI agents, complete with drop-in FastAPI/Starlette ASGI middleware. - Source: dev.to / 3 months ago

• 5-Minute AI Jobs and Closed Tabs — Why We Built Replay-Then-Tail SSE

  We had a feature in production where a single user request could run for five-plus minutes — fetch documents, chunk them, hit an LLM per chunk, synthesize a final answer. We did the obvious thing first: a FastAPI handler that ran the pipeline and streamed progress back to the browser over Server-Sent Events. - Source: dev.to / 4 months ago

• FastAPI With LangChain and MongoDB

  FastAPI is a Python framework for building APIs quickly, efficiently, and with very little code. - Source: dev.to / 4 months ago

• I Built A " CrowdSense AI " : A Scalable, Context-Aware Platform for Smart Stadiums

  Backend: Python-based FastAPI for its asynchronous I/O capabilities and rapid JSON serialization. - Source: dev.to / 4 months ago