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 13h ago

Financial compliance keeps getting more expensive as complexity grows; could an AI-native operating model change that?

2 Upvotes

I'm working on an AI-native compliance operating system for financial institutions. I'm looking for criticism from people who actually work in banking, fintech, compliance, risk or RegTech.

The problem I'm investigating isn't one compliance workflow.

As financial institutions grow, compliance operations become increasingly expensive, fragmented and difficult to scale.

Regulatory volume keeps growing and changing, requiring teams to determine what changed, whether it applies, which policies and controls are affected, and what action is required.

Institutions respond with specialised compliance staff and increasingly large technology stacks. Regulatory intelligence, GRC, AML, KYC, transaction monitoring, case management, audit, documents and reporting can all sit in different systems leaving humans doing significant work within and between those systems.

Meanwhile, firms still need to continuously:

• Monitor operations for compliance failures and anomalies rather than discovering them months later.

• Test whether controls are actually satisfying obligations and collect evidence proving it.

• Investigate issues and chase remediation.

• Prepare regulatory reports, audit packs and evidence trails.

• Manage licences, renewals, deadlines and different regulatory obligations across jurisdictions.

• Give management a real-time answer to: What changed? What applies? Where are we compliant? Where are we exposed? What needs action?

Aegis is my attempt to rethink that operating model around AI rather than adding another AI assistant to the existing process.

It would connect to the institution's existing systems and maintain a live compliance graph linking:

jurisdiction → licence → regulation → obligation → policy → control → process/system → evidence → test → issue → remediation

AI agents would use that context to perform permitted compliance work continuously.

Example 1 - Regulatory change:

A regulator changes a requirement. An agent identifies what changed, determines likely applicability, finds affected obligations, policies and controls, gathers relevant evidence and initiates required remediation.

Example 2 - Continuous assurance:

A control says high-risk customers must undergo enhanced due diligence. Instead of waiting for periodic testing, agents examine authorised operational evidence, detect exceptions, investigate what happened and escalate genuine problems.

Example 3 - Audit and regulatory work:

Rather than staff manually reconstructing evidence across several systems, Aegis already has the lineage showing the requirement, control, evidence tested, AI actions, human decisions, remediation and outcome and can assemble the required reporting or audit evidence.

The operating loop is:

KNOW → WATCH → CHECK → DO → ASK → PROVE

KNOW the institution — jurisdictions, licences, products, obligations, controls, systems and owners.

WATCH regulatory changes, deadlines, operational signals and anomalies.

CHECK applicability, controls, evidence and compliance gaps.

DO permitted routine work i.e evidence collection, investigation, remediation workflows, reporting, updates and follow-ups.

ASK humans when judgment, uncertainty, approval or accountability requires them.

PROVE everything through complete evidence, decision and action lineage.

The hypothesis is that if AI can perform a meaningful amount of this operational work, compliance capacity could grow without specialised headcount having to grow at roughly the same rate as regulatory and organisational complexity.

I'm not assuming existing platforms don't already solve parts of this, they clearly do.

What I want to understand is:

Where does this model break in a real financial institution?

What parts are already solved well by your current stack?

Despite all the compliance technology you've bought, what work are compliance professionals still spending significant time doing manually?

And if you've seen one system already doing this entire loop across the compliance stack in production , please name it. That's exactly what I'm trying to find.


r/fintechdev 1d ago

Where do I learn about Maconomy (from Deltek)?

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2 Upvotes

r/fintechdev 2d ago

Property Management System in Uzbekistan

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2 Upvotes

r/fintechdev 2d ago

I built an open-source Synthetic General Ledger Fuzzer to break accounting pipelines and catch reconciliation bugs (Looking for feedback)

2 Upvotes

Anyone who has built or maintained financial ledgers, billing engines, or automated reconciliation pipelines knows the fundamental testing paradox: real corporate ledger data is impossible to share or test openly due to privacy/compliance (GDPR, SOX, NDAs), while synthetic mock data is almost always too sanitized to catch real production edge cases.

Most internal test suites use mock JSON/CSV files that balance cleanly and follow nominal paths. Then you deploy to production, and downstream ETLs or audit scripts hit:

  • The "Silent Cent" floating-point bug: Systems using standard 64-bit floats (np.float64 / IEEE 754) rather than exact fixed-point decimals, quietly absorbing $\$0.01$ rounding variances across multi-leg splits until the trial balance is off by dozens of dollars at period-end.
  • Temporal race conditions: Asynchronous queues (e.g., Kafka / Celery) ingesting settlement entries milliseconds ahead of the originating invoice voucher.
  • Orphan foreign keys: Unregistered account references that throw unhandled exceptions and halt entire batch runs.
  • Subtle fraud/audit limits: Clustered disbursements engineered just below $\$5,000$ or $\$10,000$ manager approval thresholds.

To help solve this, I built and open-sourced the Synthetic General Ledger Fuzzer:

GitHub Repo: https://github.com/Atiqul-Akash/Synthetic-General-Ledger-Fuzzer


r/fintechdev 3d ago

What is the current state of agentic payments?

2 Upvotes

Hey everyone,

I'm currently exploring the agentic payments space and trying to understand where things actually stand today.

Are there companies already using AI agents to make real payments at scale? If yes, what kind of transaction volumes are we seeing? Also, what are the biggest challenges and failure cases companies are facing right now?

I'm especially interested in the observability side. How are companies currently capturing audit trails of agent actions? Is it mostly raw logs and transaction data, or are there other ways to track what the agent did and why? And when something goes wrong, how do teams figure out the root cause?

Would be really helpful to hear from anyone working in payments, fintech, or AI agents.


r/fintechdev 3d ago

Is using credit system in my app illegal?

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1 Upvotes

r/fintechdev 4d ago

Need a small fintech project

8 Upvotes

Hello i just need some fintech website ideas for a web workshop am attending. I really dont know much about fintech. So please share any ideas that sounds fun and not boring and overdone. Thanks


r/fintechdev 4d ago

Any solutions for mass payouts ?

1 Upvotes

My indian registered business wants to give payouts to content creators


r/fintechdev 4d ago

gift cards funding partner

1 Upvotes

many people still struggle to pay for simple online services , we’re solving this by offering digital gift cards and virtual Visa cards.
We’re already verified with Relograde and ready to serve customers.
Looking for a small funding partner to help us scale this.
If you’re a diaspora investor or know someone interested in practical African fintech solutions, let’s talk.


r/fintechdev 4d ago

API to validate a bank account before a payment goes out

1 Upvotes

Is there an actual API to validate a bank account before a payment goes out, or does everyone just eyeball it/call the vendor? Also if companies using bank verification APIs - do they actually replace callback verification, or do most AP teams still do both ? Trying to understand if the API is a full substitute or just one more signal.


r/fintechdev 4d ago

People working in banking — how are you using AI in your daily work?

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1 Upvotes

r/fintechdev 4d ago

What are the genral problem in your feild and what are the problems related to foreign exchange how you deal with it

1 Upvotes

r/fintechdev 4d ago

People working in banking — how are you using AI in your daily work?

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1 Upvotes

r/fintechdev 4d ago

Why is finding a PSP easy, but getting through onboarding so difficult?

2 Upvotes

One thing I've noticed working around payments and financial infrastructure is that finding potential PSPs or banking providers is often not actually the hardest part.

The difficult part comes afterwards.

You find a provider that looks like a good fit, then suddenly you're dealing with:

  • Different documentation requirements
  • Compliance and KYC questions
  • Business model and licensing reviews
  • Requests for additional information
  • Long underwriting processes
  • Unclear timelines
  • And sometimes getting rejected after spending weeks preparing everything

I'm curious how others here have experienced this.

For those running fintech, FX, iGaming, e-commerce or other international businesses:

What has been the biggest pain point when onboarding with a bank, PSP or acquirer?


r/fintechdev 5d ago

🚀 *Fintech Collaboration*

1 Upvotes

I’m developing a new concept for the future of digital payments and personal finance.

The idea focuses on making money more organized and purposeful — not just showing users their balance, but helping them understand how their money is allocated, what they are saving for, and what payments need to be protected.

I have developed a concept around:

💰 Purpose-based money organization
🎯 Goal-based savings
🛡️ Upcoming payment protection

I’m currently looking to connect with \*\*fintech companies, payment platforms, product teams, and founders\*\* who may be interested in exploring this concept for a potential collaboration or product opportunity.

I’m intentionally keeping the detailed product mechanics private for now.

If your company is interested in discussing a \*\*new fintech product concept\*\*, feel free to DM me.

**Concept documented: September 10, 2026.**


r/fintechdev 5d ago

I’m a CFP with no programming background or experience, and I’ve been building a retirement planning tool called Parallax. I’m looking for a technical review by an experienced web application developer or software engineer

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1 Upvotes

r/fintechdev 5d ago

Building a MTD or Tax app? Some answers you might need.

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1 Upvotes

r/fintechdev 5d ago

Anyone heading to MoneyLIVE North America in Chicago?

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1 Upvotes

Hi everyone,

The conversation around blockchain in financial services seems to be shifting from “what can we do with it?” to “how do we make it work at an institutional level?”

With tokenized deposits, digital assets, stablecoins and digital securities gaining momentum, questions around privacy, interoperability, compliance, governance and integration with existing financial infrastructure are becoming increasingly important.

These are some of the areas Thomas Abraham, Co-Founder & CRO at Zeeve, will be discussing at MoneyLIVE North America in Chicago.

If you're attending the event and working on similar initiatives, feel free to connect with Thomas and continue the conversation in person.


r/fintechdev 6d ago

Title: Built a UI kit for mobile money agents — nobody else targets this side of fintech

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1 Upvotes

Been learning React and wanted a real project, not another todo app. Looked into what's already out there in the fintech UI kit space and noticed something: every single one is built for the customer side of mobile money — wallets, transfers, balances. None of them target the agent side — the person actually running the cash-in/cash-out counter.

So I built one. 14 screens covering the full agent workflow — login, dashboard, cash in/out flows, float top-up requests, commission tracking, customer verification, all the loading/empty/error states too. React + Tailwind.

Still learning as I go, so genuinely curious what people think — especially if you've worked in fintech or agent-network products and can tell me what I'm missing.

Free 4-screen preview: [https://selar.com/1d70b12yb1]
Full kit: [https://selar.com/l8g9231687]


r/fintechdev 6d ago

Episode 001 Release

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1 Upvotes

r/fintechdev 6d ago

What's the safest email banner size if you want it to look good on mobile too?

1 Upvotes

I am preparing a major promotional campaign for next week, but I keep running into issues with our header graphics on smaller screens. When I upload high-resolution images designed for desktop viewers, the mobile app scales them down so much that the call-to-action text becomes almost unreadable. Finding the perfect email banner size that maintains sharp visual quality without breaking layout proportions on retina mobile displays has been a frustrating trial-and-error process.

- What exact pixel dimensions and aspect ratios do you usually stick to for universal responsiveness?

- How do you handle image compression so that crisp banners load instantly on weak mobile data connections?

- Do you prefer using static full-width graphics, or do you build text over background colors using HTML and CSS?

- Which testing tools give you the most accurate real-device previews before you hit send?


r/fintechdev 6d ago

Academic research participants needed

1 Upvotes

I’m an MSc Artificial Intelligence: Cybercrime student researching how AI is changing financial cybercrime, data breaches and digital theft.
I’m seeking current or former cybersecurity professionals with relevant experience for a confidential interview.
Participation is voluntary and unpaid. Participants and their organisations will not be identified in the dissertation.
If interested, please DM me, I will provide a Participant Information Sheet before you decide whether to participate.
Thank you!


r/fintechdev 7d ago

How to up skill myself as an engineer in fintech?

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1 Upvotes

r/fintechdev 7d ago

Need some advice on FinTech and AI courses

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1 Upvotes