I parsed 10 years of Japanese corporate filings into an API
Unlocked Japanese financial data—XBRL parsed to JSON for 11k companies, no signup.
Zero to OneSolve My ProblemBig Brain
dahaleonkar
403mo ago
Finance Projects
Finance and fintech projects from Show HN — trading tools, budgeting apps, payment systems, and crypto.
Every CEO and CFO change at US public companies, live from SEC
Free SEC filing tracker with compensation data that Bloomberg charges for.
Solve My ProblemDark Horse
porsche959
191632mo ago
GitHub
Open-source Stripe Connect alternative. ~$0.002 payout fees. Identical API to Stripe. Instant global USDC payouts. Self-hosted.
306TypeScript
●●●Banger
Zoneless – Open-source Stripe Connect clone with $0.002 fees using USDC
Stripe-compatible payouts at $0.002 vs Stripe's $9,400/month burn.
Solve My ProblemBold Bet
tinyprojects
1572mo ago
GitHub
An index tracking realtime GPU rental prices and a perpetual futures marketplace that trades it
1Rust
●●●Banger
GPU Perpetual Futures Prototype
GPU derivatives with real funding rates and mark pricing—fills a genuine infrastructure hedging gap.
Big BrainBold BetWizardry
ozzymandiaz96
933mo ago
GitHub
Vibe Trading — agentic AI trading platform for Indian markets. 7 LLM analyst agents analyze stocks in parallel, debate bull vs bear, and deliver trade plans. Open-source agentic quantitative researcher for NSE/BSE/NFO.
63Python
●●●Banger
Trading harness for Indian stock market
Seven AI agents debate bull-vs-bear before execution—actual architecture, not just API chaining.
WizardryNiche GemBig Brain
Arkid
902mo ago
Sheila, an AI agent that replaced our accounting flow
Real agent in production handling fiat + Bitcoin payments, not a framework demo or vaporware.
Solve My ProblemShip It
knewter
723mo ago
I made a simulator for personal finance (5 year update)
Beam search optimizer saves $300k in lifetime taxes by automating Roth conversions.
Big BrainSolve My ProblemSlick
scubakid
751mo ago
Replacing $50k manual forensic audits with a deterministic .py engine
Treats forensic accounting as a state-machine problem, not an AI problem — genuinely clever.
Big BrainSolve My ProblemDark Horse
cd_mkdir
513mo ago
GitHub
Financial Model Engineering — Python code compiles to live Excel formulas
43Python
●●●Banger
Modeleon – Python DSL that compiles to live Excel formulas
Python code compiles to real Excel formulas with automatic dependency graphs.
Big BrainSolve My Problem
adilkhanovkz
501mo ago
GitHub
CCXT for prediction markets. PMXT is a unified API for trading on Polymarket, Kalshi, and more.
1,887TypeScript
●●●Banger
DomeAPI (YC F25) was acquired. pmxt is the open-source equivalent
CCXT for prediction markets—fills real void left by DomeAPI acquisition.
Solve My ProblemDark Horse
SamTinnerholm
403mo ago
MCP server ONLY app for personal finances
MCP-only consumer app proves Claude as a viable UI surface for complex financial workflows.
Zero to OneSlick
bjpless
423mo ago
Micropay – Stripe for Africa's biggest payment network
Stripe for M-Pesa, at 98% lower cost than existing aggregators.
Zero to OneSolve My ProblemBig Brain
possiblelion
304mo ago
SatsAPI – Bitcoin data API, pay per call in sats via Lightning L402
L402 turns Lightning payments into stateless API auth for autonomous agents.
Zero to OneSlickSolve My Problem
Aperezvigoa
333mo ago
GitHub
StripeOnChain is a middleware service that independently monitors blockchain networks to verify on-chain USDC settlement of Stripe stablecoin payments.
4TypeScript
●●●Banger
StripeOnChain – Verify Stripe's stablecoin payments against blockchain
Fills Stripe's blockchain visibility gap with chain-specific finality tracking.
Solve My ProblemBig Brain
techdavepy
303mo ago
Piecely – Content marketplace using dominant assurance contracts
Dominant Assurance Contracts for content: backers get a bonus if the funding goal fails.
Big BrainZero to OneBold Bet
johndebord
302mo ago
I built Pagome – SEPA payment links via GiroCode QR (free, no server)
SEPA links via GiroCode QR with zero servers — why didn't this exist?
Zero to OneSolve My Problem
urbanisierung
321mo ago
A DeFi data API where AI agents pay per call via HTTP 402 micropayments
HTTP 402 finally meets crypto — agents pay micros without auth.
Zero to OneBig BrainSlick
fernsugi
203mo ago
Ditch your budget app subscription. Surebeans is a modern YNAB4
YNAB4 spiritual successor with zero subscription, scraping beats API trap.
Solve My ProblemDark Horse
sltr
243mo ago
I reverse-engineered car lease math against three real dealer documents
Reverse-engineered lease math verified to the cent against three real dealer documents.
Solve My ProblemBig Brain
amirjavid
253mo ago
Open-source personal finance AI that runs locally on your laptop
Beats Mint and YNAB: runs local, estimates taxes, connects AI chat to real data.
Solve My ProblemNiche GemSlick
jfornear
223mo ago
Refund and Arbitration Protocol for Agents
Escrow refunds for failed AI API calls — Austin Griffith and Ethereum Foundation endorse it.
Zero to OneBig BrainSolve My Problem
AliAbdoli
203mo ago
Trade Robinhood from Claude Code – 10 real traders, 60K orders served
5 ladder orders in 1 sentence instead of 50 clicks — 10 users, 60K orders shipped.
Solve My ProblemSlick
teamtrayd
202mo ago
Financial Database API for Vibe Coders
Entity-resolution fixes ticker recycling headaches that break most free financial APIs.
Big BrainNiche Gem
lyonghee97
211mo ago
Filedge – parse SEC filings for $0.05 via x402, no keys
x402 micropayments kill API keys entirely, letting agents pay per parse with zero auth overhead.
Zero to OneDark Horse
arvindravi
201mo ago
See how much gold, plutonium and cocaine SpaceX's Bitcoin buys
Sliding scale from 1 sat to 21M BTC with a working Geiger counter for plutonium.
Rabbit HoleCrowd Pleaser
hmg-ocean
2024d ago
Iban.link – A memorable link for your IBAN
Privacy-first IBAN shortener replaces PayPal for European bank transfers—genuinely useful.
Solve My ProblemZero to One
oliverjanssen
103mo ago
Natural language search across Kalshi and Polymarket
Unified NL search across fragmented prediction market APIs; AI-agent-friendly, real-time odds.
Solve My ProblemSlick
helloiamvu
103mo ago
GitHub
A real-time cryptocurrency trading dashboard powered by AI agents with multi-exchange support
14Python
●●●Banger
HashTrade – Open-source LLM trading agent with episodic memory
LLM-as-strategy replaces rigid backtesting, remembers trades, no code rewrites needed.
Big BrainWizardryBold Bet
mertozbas
113mo ago
Deadhand – trustless Bitcoin inheritance in 2 minutes
Trustless dead man's switch for Bitcoin via Shamir SSS, but execution risk and regulatory uncertainty loom.
Zero to OneBig BrainBold Bet
maxcomperatore
103mo ago
Nett – See what you can spend (not your bank balance)
Founder accounting reality check: reveals actual spend vs. bank balance math.
Solve My ProblemShip It
Clutchone2
103mo ago
Panther - Bloomberg Terminal for prediction markets now in early access
Multi-exchange prediction market terminal with arbitrage scanner beats tab-switching chaos.
SlickSolve My Problem
mkelias
103mo ago
Refinance calculator that shows the real net worth impact
Refinance net worth modeling beats payment-only calculators; honest marginal tax and opportunity cost math.
Solve My ProblemDark Horse
brentdrns
103mo ago
Spectra – local finance dashboard with offline ML categorization
Offline-first bank import with ML categorization—real privacy, real product, shipped.
Zero to OneSolve My ProblemNiche Gem
francesco_gab
103mo ago
A low-latency Middle East OSINT feed for trading crude oil
Geopolitical event → oil price correlation data that Bloomberg Terminal doesn't provide.
Dark HorseBig Brain
MelStan
113mo ago
GitHub
AI-powered personal finance transaction categorizer — FastAPI + React + Ollama
3Python
●●●Banger
NumbyAI – Self-hosted personal finance app powered by a local LLM
Local LLM categorizes transactions — your bank data never leaves your machine.
Big BrainSolve My Problem
suheilaaita
103mo ago
Trading simulator with hidden dates to prove investment skill
Hidden dates prevent hindsight bias — finally a GitHub for finance resumes.
Big BrainZero to OneSolve My Problem
jtaylortech
102mo ago
AgentPass – The credit check for AI agents
First credit-check infrastructure for AI agents spending real money — genuinely novel.
Zero to OneBold Bet
AskCarX
112mo ago
I built a tool that checks if your council tax band is wrong
Generates a ready-to-submit VOA challenge pack with comparison reports in minutes.
Solve My ProblemSlickNiche Gem
giwa_abdul
102mo ago
PayClaw – a gasless USDC wallet for AI agents (12 frameworks)
1% flat fee beats Stripe's $0.20 fixed cost on $0.31 average agent transactions.
Zero to OneSolve My Problem
onsari
101mo ago
I spent 5 years building a financial planning and optimization tool
Beam search tax engine saves median user $300k versus standard retirement calculators.
Big BrainSolve My Problem
scubakid
101mo ago
TreasuryFlow – AI CFO that runs in your spreadsheet, from $49/mo
Fills Bench's fatal gap: forward-looking cash visibility, not backward bookkeeping.
Solve My ProblemBold Bet
michaelgdwn
101mo ago
GitHub
Open-source Windows app that scores Facebook Marketplace listings against real eBay sold-comp data. Deterministic, percentile-rank scoring with confidence intervals — free forever for 3 saved searches, Pro for unlimited and instant alerts.
4Python
●●●Banger
Bullseye – $40/mo for a Marketplace deal-finder? I built a free one
Deterministic deal scoring using Tukey-trimmed eBay comps beats vague 'market value' estimates.
Solve My ProblemBig Brain
reubenlavin
101mo ago
How much gold, silver, or Plutonium-238 does 1 BTC buy?
Dog-for-scale 3D visualizer makes BTC purchasing power instantly graspable.
Eye CandyCrowd PleaserCozy
hmg-ocean
1125d ago
LangAlpha – what if Claude Code was built for Wall Street?
Persistent research workspaces treat investing like code — commits compound over weeks.
Bold BetBig Brain
zc2610
148532mo ago
A website that tracks every stock trade Congress makes
Open-source congressional tracker when Quiver Quantitative and Capitol Trades charge for access.
Solve My ProblemSlick
hubraumhugo
632519d ago
Tanstaafl – Pay-to-inbox email on Bitcoin Lightning
Bitcoin micropayments kill spam economics, but adoption depends on senders willing to pay.
Big BrainNiche Gem
NikoBlack
30543mo ago
GitHub
Terminal UI for personal finance — Plaid sync, CSV import, AI assistant, and MCP server
88TypeScript
●●Solid
Fungible – A local personal finance app in the terminal
MCP server lets Claude read your finances while Plaid tokens stay encrypted at rest.
CozyNiche Gem
tomfunk
301520d ago
Trackm, a personal finance web app
Forecasts exactly when your pockets go negative with zero-knowledge encryption.
Solve My ProblemCozy
iccananea
21223mo ago