The Bounty API server provides Singapore property/financial intelligence and general research APIs, using an x402 micropayment model (pay-per-call in USDC on Base) with no API keys or subscriptions required.

Free Endpoints

• Stamp Duty: Calculate BSD + ABSD by buyer profile (SC/SPR/Foreigner/Entity), property type, and count — verified against IRAS

• Postal Lookup: Get district, area, and name from a 6-digit Singapore postal code

• Address Intelligence: Full details including URA planning area, market region (CCR/RCR/OCR), HDB town, coordinates, and nearest 5 MRT stations with walking distance

• MRT Nearby / MRT Search: Find nearest MRT/LRT stations to a postal code, or search stations by name

• Income Tax: Singapore resident (progressive) and non-resident (flat) tax with reliefs and deductions

• GST: Add or remove Singapore 9% GST

• Property Commission: Estimate agent commission for sale or rental (HDB, private, landed)

• CPF Housing: Estimate CPF OA accumulation for housing use

• Salary Benchmark: Median and percentile salaries from live MyCareersFuture job postings

• Mortgage Calculation: Standard amortization calculation

• Currency Conversion: Convert currencies using ECB rates

Paid Endpoints (USDC micropayments)

• Affordability: Loan affordability under MAS TDSR/MSR rules with stress-tested rates and LTV limits

• Rental Yield: Gross/net yield, cap rate, cashflow, and break-even years

• HDB Resale Median: Median resale prices by flat type and town

• HDB Resale Search: Search transactions with filters (town, flat type, price range)

• Property Analyze: Comprehensive analysis combining stamp duty, HDB comparables, rental yield, affordability, and location — with verdict and risk flags

• Property Rank: Rank multiple candidate properties across value, yield, affordability, and location dimensions

• Property Pitch: Generate a complete one-page investment pitch with plain-English recommendation

• Company Intelligence ($0.05): Tech stack, contacts, social links, SSL/security headers

• News Search ($0.01): Structured current news by keyword

• Job Search ($0.02): Job postings and hiring signals

• App Reviews ($0.02): Recent App Store reviews with rating samples and topic flags

Integration: Available via direct REST API or as an MCP (Model Context Protocol) package for AI agent integration.

Provides access to recent App Store reviews for applications, including ratings and topic flags.