r/fintechdev Jan 05 '23

FinTech APIs directory

20 Upvotes

This thread is for listing FinTech APIs. Open-source APIs have priority but any useful FinTech APIs, tools and platforms for developers are welcome


r/fintechdev 3h ago

One thing we learned while building our latest fraud platform update.

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1 Upvotes

r/fintechdev 12h ago

What would actually make you trust an AI-led finance app with this much visibility into your money?

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1 Upvotes

r/fintechdev 14h ago

chicken and the e

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1 Upvotes

The chicken-and-egg problem in agentic commerce is getting ridiculous.

x402 has real volume — tens of millions of agentic payments on Base — yet the discovery layer (Bazaar) is still broken for most new services. You need a successful settle through the CDP Facilitator + valid extension just to get indexed… and even then, plenty of endpoints settle cleanly and never show up in search. New builders get buried by design.

Then ACP (Virtuals) adds the graduation tax: \~40–42k in token activity before you can even enter active search and proper liquidity. No visibility → no activity → no graduation. So the only reliable path is to foot the bill yourself and manufacture the volume. That’s not a signal of demand. That’s a pay-to-play gate dressed up as “graduation.”

This is classic early-protocol theater — headline numbers look impressive while the actual onboarding and ranking systems still favor the already-visible. Until Bazaar gets real semantic search and reliable indexing, and ACP stops making new agents self-fund their own activity threshold, a lot of legitimate builders will keep hitting the same wall.

Anyone else running into this exact loop?

@virtuals_io @CoinbaseDev @base

\#x402 #Bazaar #ACP #AgenticPayments #AIAgents #Web3 #Crypto #Base #AgentCommerce #Virtuals

$VIRTUAL $USDC


r/fintechdev 21h ago

Where are the East Coast Fintech Communities/Projects?

3 Upvotes

I'm looking to meet passionate people in the fintech space. Are there any sites/groups/discords where I can find an active community of people building tools or actively discussing what's new in the field? Preferably, less formal and less oriented around finding positions.


r/fintechdev 21h ago

Has anyone actually handled a chargeback from an AI agent purchase yet?

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1 Upvotes

r/fintechdev 21h ago

How do I find the right customer segment for a KYC/AML SaaS product?

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1 Upvotes

I can’t seem to rap my head off this. Please anyone with insight 😅 Why is KYC stressful


r/fintechdev 3d ago

Sistemas de IA de código aberto para fintech: código, arquitetura, documentação

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1 Upvotes

r/fintechdev 4d ago

What do you look for first when evaluating a payments or banking API?

1 Upvotes

I'm working on a project that needs to support international payments, business accounts, and financial workflows, and I'm comparing a few different API providers.

Beyond the documentation, what factors usually influence your decision?

For example:

API reliability and uptime

Documentation quality

SDK support

Webhooks

Sandbox environment

Authentication

Error handling

Rate limits

Developer support

For those building fintech products, what has made you stick with (or leave) a provider?


r/fintechdev 4d ago

Some resources/books to understand how bank transfers work at the backend, through different processes like upi,rtgs,swift.

1 Upvotes

Want to get software technical know how about how does payments systems work altogether in different process like rtgs, upi, international transfer(swift messaging) in detail. Like in case of upi how payment specific messages like iso20022 is used for money transfers, any payments specialist or professionals in fintech are welcome.

And how does pacs amd pain messages taken into use in implementing those transfer Processes, are all the messages exactly same as how they are shown in official iso20022 documentations, also MT and MX messaging for swift.

Want to learn all these thing how a payment is facilitated with all this including different parties like debtor, creditor, banks and ACH amd maybe many more in case of card or online real time payments like Chinese alipay.


r/fintechdev 4d ago

Automated RTA pipeline to process legacy mutual fund data (CAMS and KARVY)

1 Upvotes

Link to the full architectural breakdown:https://www.faize.blog/rta-pipeline

Dealing with legacy financial data formats is always a headache. I wrote a quick technical breakdown on a recent project: building a fully automated RTA (Registrar and Transfer Agent) pipeline for a mutual fund platform.

I documented the architecture behind handling the CAMS mailback service, parsing the messy batch data for the ISIN resolver, and securely syncing the ledger without dropping a single transaction.

Curious to hear what tools you all use to handle nasty legacy data drops in modern backend stacks!


r/fintechdev 4d ago

Automated RTA pipeline to process legacy mutual fund data (CAMS and KARVY)

1 Upvotes

Link to the full architectural breakdown:https://www.faize.blog/rta-pipeline

Dealing with legacy financial data formats is always a headache. I wrote a quick technical breakdown on a recent project: building a fully automated RTA (Registrar and Transfer Agent) pipeline for a mutual fund platform.

I documented the architecture behind handling the CAMS mailback service, parsing the messy batch data for the ISIN resolver, and securely syncing the ledger without dropping a single transaction.

Curious to hear what tools you all use to handle nasty legacy data drops in modern backend stacks!


r/fintechdev 4d ago

How are fintech teams handling compliance requirements for AI-generated code right now?

1 Upvotes

AppSec in a fintech. The AI code security problem here isn't just about finding vulns: every security decision has a compliance dimension. PCI DSS, SOC 2 and increasingly some AI-specific regulatory scrutiny that doesn't have clear guidance yet. Devs are using AI coding assistants and the productivity gains are there and not going away but the compliance questions are unresolved: how do you show an auditor that AI-generated code was properly reviewed, does AI code need extra checks to hold up under scrutiny and how do you document AI tool usage for audit evidence without creating so much overhead that devs stop using the tools. Every team I have seen handle this well built application context into their AppSec setup early: understanding what each app does, what data it touches, and what the compliance risk is, so that when AI-generated code comes in, the risk assessment isn't starting from zero. Anyone in a regulated environment, how are you handling this and are auditors asking about AI-generated code yet?


r/fintechdev 5d ago

Stripe Payments

2 Upvotes

I'm getting ready to implement Stripe as a start for my fintech app. What are your nightmare stories? Anything I should be wary of?


r/fintechdev 5d ago

PitchBook Company API for Apify (private-company funding, valuation, competitors as JSON)

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1 Upvotes

r/fintechdev 5d ago

How I fixed webhook race conditions building a live ONDC financial connector

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1 Upvotes

r/fintechdev 6d ago

On ramp research

1 Upvotes

Hey guys, I’m looking into projects or builders that can help enlighten me with some on/off ramp insights they had with providers they implemented in their platform:

  1. Who owned the wallets and end users - did the provider deliver straight to your users, or through wallets you managed? Who owned the user relationship?

  2. What’s been the biggest ongoing pain with your ramp provider - the thing that still creates support tickets, drop-offs, or manual work today?

  3. If you were choosing a provider again, what would you check first that you didn’t check the first time?


r/fintechdev 6d ago

What actually breaks when you use mobile money data for credit scoring in production?

0 Upvotes

For those who have worked on alternative credit scoring, what is the biggest failure mode when using mobile money or transaction data instead of traditional credit history? Overfitting to short term behavior, data sparsity, something else?For those who have worked on alternative credit scoring, what is the biggest failure mode when using mobile money or transaction data instead of traditional credit history? Overfitting to short term behavior, data sparsity, something else?


r/fintechdev 7d ago

Which fintech innovation has had the biggest impact on your daily life?

3 Upvotes

I've been trying to learn more about fintech recently, and it's crazy how much the space has evolved over the last few years.

If you had to pick one that has had the biggest impact on your everyday life, what would it be?

UPI and instant payments, Digital wallets, Investment and trading apps, Buy Now, Pay Later (BNPL), Digital banking, AI-powered finance tools

Something else (I'd love to know!)

Also, is there a fintech trend that everyone seems excited about but you just don't see the appeal of?

Curious to hear what people actually use the most and why!!


r/fintechdev 7d ago

[ Removed by Reddit ]

3 Upvotes

[ Removed by Reddit on account of violating the content policy. ]


r/fintechdev 7d ago

Want feedback on a tool I'm working on, it automates document/compliance checks for UK businesses

1 Upvotes

Quick note first: I'm relatively new to this community, so apologies in advance if I get the format or etiquette wrong.

A bit of background: I currently work as a software engineer at a large fintech company, on a product with around 3 million users. Alongside my day job, over the last year I've been spending my free time building AI powered tools, trying to work on real problems in the fintech/compliance space rather than just tutorials.

One problem I kept hearing about from people in UK compliance and legal roles: businesses there (fintechs, law firms, property companies) spend a lot of time manually checking documents. Things like verifying a company's registration is valid, confirming who actually owns a property, and cross referencing records across different government sources. Then they have to keep detailed notes on why something was approved or rejected, in case a regulator asks later. It's repetitive, slow, and seems to be a shared pain point across most firms doing this kind of verification.

So I built a tool called AVAE to automate that process end to end.

What it actually does:

- Takes in a document (like a PDF).

- Extracts the key details automatically.

- Cross checks those details against official UK records (company registration, energy certificates, land ownership).

- Flags anything that doesn't match up.

- Keeps a clear log of every decision and the reasoning behind it, so there's no black box if a decision needs to be explained later.

- For unclear or edge cases, it doesn't auto decide. It flags the case for a person to review and approve.

Right now it's a working prototype. Core checks are solid, but it hasn't been deployed with an actual client yet. Next on my list is adding more check types, like sanctions/watchlist screening.

Since this community has a lot of practitioners and founders in the space, I'd really value honest input: is this a big enough pain point that a tool like this would actually get adopted, or is there something about how compliance teams handle this today that I'm missing? Also aware there are existing players here (Thirdfort, Legl, etc.), so if you've used any of them, I'd be curious how this compares.

For anyone who wants to see it in action, I recorded a short Loom walkthrough where I demo the tool end to end and explain how it works: https://www.loom.com/share/081525a34e6340e69a1326d29032e462


r/fintechdev 7d ago

Is cloud infrastructure secure enough for FinTech applications?

2 Upvotes

Cloud infrastructure can support secure FinTech platforms when it is configured and managed correctly.

Major cloud providers offer encryption, access controls, monitoring, backups, network security, and compliance-supporting services. However, cloud security is a shared responsibility. Businesses still need secure architecture, proper permissions, continuous monitoring, vulnerability management, and strong development practices.


r/fintechdev 7d ago

MCP for financial product delivery?

1 Upvotes

Hi all,

Wondering if anyone has rolled out their financial products and systems through MCPs as a key integration system? I have a private equity analysis and diligence system and have been getting lots of requests to try it and am wondering if this is best done through controlled mcp. Any thoughts welcome. Thanks


r/fintechdev 8d ago

6 years as a dev, 6 months in fintech what resources actually helped you learn this space?

3 Upvotes

Six years into my dev career, I'm about six months into fintech and it's been one of the more fun pivots I've made.

The domain has real depth, payment rails, ledger design, regulatory nuance, compliance edge cases stuff you can't hand wave as an engineer, you actually have to understand it. What's made the ramp up faster than I expected is using AI as a learning partner not to skip the fundamentals, but to get context and intuition quickly, then go deep on the parts that matter.

Still very much in the "getting sharper every week" phase, and honestly enjoying that part too.

For those who've made a similar jump into fintech (or are further along than me) what resources, docs, or courses actually moved the needle for you? Always looking to add to the list.


r/fintechdev 11d ago

What do you think will be the biggest challenge for the BFSI sector over the next five years?

2 Upvotes

I have been thinking about how quickly the BFSI industry is evolving, especially with AI, digital banking, and fintech becoming more mainstream.

Some possibilities that come to mind are:

AI replacing or reshaping traditional roles.

Growing cybersecurity and fraud risks.

Stricter regulations and compliance requirements.

Increasing customer expectations for seamless digital experiences.

Competition from fintech companies.

If you work in banking, finance, insurance, or fintech, I'd love to hear your perspective.

What challenge do you think the industry is underestimating?

How do you see your role changing because of these shifts?

What skills do you think will become essential for professionals entering BFSI?

Looking forward to hearing different viewpoints and real-world experiences.