Building Cross-Exchange Trading Library with OpenAPI / AsyncAPI `Sho Kaneko CEO, Repoch Indie Hacker, Rustascean 

Sho Kaneko 2019 embedded rust developer / running hardware product prototyping agency 2023 started doing open-source trading in rusttransitioned to crypto trading software rust 2024 80% contracting rust project,20% open-source trading software100% digital nomad / indie hacker intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource 

doc-first integration Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource REST WebSocket Events/Signals Strategy REST WebSocket Ledger Backtest Get Market Data Place Order reading inaccurate / unmaintained API document testing parsers figuring out cross-exchange trading execution 20-50% of the dev time spent on 

cross-exchange trading libraries Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource Opinionated doesn’t fit into actual software design requirements Rust Wrapper on Javascript/Python (like fr?) Less people using Rust not leveraging the Python community Javascript Python Rust 

what we want for a cross exchange trading library Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource opensource native python support library, not a framework code-gen clients Sounds familiar as embedded software engineer… 

Idea from embedded to trading: arduino Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource above: application below arduino: h/w support 

Idea from embedded to trading: above the abstraction Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource Arduino Uno R3 

Idea from embedded to trading: below the abstraction Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource “All of them run the same code, Can’t we do the same thing for crypto trading?” 

key to openness: abstraction Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource arduino hardware abstraction layer (HAL)e.g. GPIO, UART, I2C, SPI, PWM espressif BSP/HAL Flash driver nrf52 BSP/HAL LCD display driver smartwatch, fleet management, 3D printer memory map memory map above: application below arduino: h/w support 

key to openness: abstraction Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource trading abstraction layere.g. order placement, fetch market data Hyperliquid local orderbook Binance BSP/HAL trading signals strategy, backtesting, reporting REST/ WS Client REST/ WS Client above: application below:CEX support OpenAPI / AsyncAPI OpenAPI / AsyncAPI 

guilder: the trading abstraction Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource trading.yaml guilder.py guilder.r s Domain Specific Language (DSL) “get L2 orderbook”, “get funding rate” “place order”, “check current balance” 

guilder: the trading abstraction Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource trading.py trading.rs trading.yaml ongoing implemented local orderbook sync adding backtesting, visualization porting cyclic arbitrage code 

exchange-collection: OpenAPI / AsyncAPI collection Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource OpenAP I(REST) AsyncAP I(WS) client code api testing tools gathered 3 exchanges(binance, coinbase, hyperliquid) building client code-gen CI adding AsyncAPI WS codegen 

useful tool #1: API viewer Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource https://repoch.co/exchange-collection/ OpenAP I(REST) AsyncAP I(WS) 

useful tool #2: client codegen Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource OpenAP I(REST) AsyncAP I(WS) janky, but I can rebuild it because it is open source 

google it or (re)build it Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource fixing OpenAPI REST client codegen adding AsyncAPI WS client codegen (maybe) add extensions to OpenAPI / AsyncAPI 

useful tool #2: client codegen Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource Rust Trading Bot Dev https://discord.gg/nabHXUN9RS Q&A 

future integration pipeline:code-first approach Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource appendix 

future integration pipeline:api-first approach Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource 200USD OpenAPI150USD AsyncAPI1 doc per week ? 

future integration pipeline:code-first approach Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource poem and poem-openapi 

OpenAPI tools Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource 

AsyncAPI tools Russian boss who doesn’t speak Intelligent CTO intro trading project hurdles solution inspired by embedded leveraging AsyncAPI useful tools power of opensource