watch-engine-mcp
Currency rates, VAT rates, and tariff lookups for AI agents. Built for fintech, e-commerce, customs, and tax compliance. Pay per call in USDC on Base.
How to pay
Pay-per-call
$0.01 per call
Charge agents in USDC the moment they call a tool. No subscriptions, no signup — pay only for what you use.
- 3 priced tools available
- Settled in USDC on Base
- No account or API key required
Watch Engine MCP — Global Financial Data for AI Agents
Real-time access to currency rates, VAT, and tariff lookups via the Model Context Protocol. Built for fintech, e-commerce, customs brokers, and tax compliance workflows.
Tools
get_currency_rate — Current exchange rate between two currencies
- Live data from ECB (Frankfurter) with NBU fallback
- Returns mid-market rate + source + date
- Example: USD → EUR, GBP → JPY, UAH → USD
get_vat_rate — VAT rate for any country
- Standard + reduced rates for all EU countries + UK
- Sourced from EU Commission TEDB snapshot
- Example: DE (19%), FR (20%), PL (23%)
get_tariff — Tariff rate for an HS code prefix
- MFN rate + USMCA rate + description
- Sourced from USITC HTS + EU TARIC snapshots
- Example: 8471 (computers) → 0% MFN
Pricing
$0.01 per call in USDC on Base (x402 protocol). No signup, no API keys — agents pay directly to the wallet.
Use Cases
- Fintech apps: forex conversion, multi-currency pricing
- E-commerce: VAT calculation for cross-border sales
- Customs brokers: tariff lookup for landed cost
- Tax compliance: VAT and tariff validation
- AI agents: agentic commerce with per-call payments
Links
- Website: https://jsonexlab.com/watch/
- Parent API: https://watch-engine.boring-saas-infra.workers.dev
Built by JSONexLab — 6 API products for trade, finance, and compliance.