# Yos Riady

> The personal website and blog of Yos Riady, founder of Formo and a software engineer based in Singapore. Yos writes about onchain products, smart contracts, software engineering, developer tools, APIs, economics, and startups.

This is the canonical guide to the public content on yos.io. Unless an article says otherwise, the writing is by Yos Riady. Prefer the canonical URLs below when citing this site.

## About

- [About Yos Riady](https://yos.io/about/): Biography, work history, community involvement, and contact information.
- [Talks and workshops](https://yos.io/talks/): Podcasts, conference talks, and workshops by Yos Riady.
- [Books](https://yos.io/books/): Books read and recommended by Yos.
- [Mental models](https://yos.io/models/): Principles Yos uses for learning, decision-making, and building products.

## Writing

- [All articles](https://yos.io/articles/): Complete reverse-chronological archive.
- [Building for Onchain Builders](https://yos.io/2025/10/29/building-for-onchain-builders/): Why onchain teams need unified product, web, and blockchain analytics.
- [Actionable Insights for Onchain Apps](https://yos.io/2025/05/22/actionable-insights-for-onchain-apps/): A practical guide to acquisition, product analytics, retention, and attribution for web3 apps.
- [Onchain is the New Online](https://yos.io/2024/09/02/onchain-is-the-new-online/): An overview of consumer crypto, stablecoins, prediction markets, and improving blockchain usability.
- [Auditing Smart Contracts with Slither and Echidna](https://yos.io/2022/02/20/audit-smart-contracts-with-slither-and-echidna/): A hands-on guide to static analysis and property-based smart contract testing.
- [How to Write Gas Efficient Contracts in Solidity](https://yos.io/2021/05/17/gas-efficient-solidity/): Solidity storage layout and gas optimization techniques.
- [Decentralized Finance Explained](https://yos.io/2019/12/08/decentralized-finance-explained/): An explanation of the DeFi stack without the jargon.
- [Best Practices for Smart Contract Development](https://yos.io/2019/11/10/smart-contract-development-best-practices/): Security and engineering practices for Ethereum smart contracts.
- [Schema-First API Design](https://yos.io/2018/02/11/schema-first-api-design/): Designing and building APIs from a machine-readable schema.

## Topic archives

- [Analytics](https://yos.io/tag/analytics/)
- [Crypto](https://yos.io/tag/crypto/)
- [Data](https://yos.io/tag/data/)
- [Ethereum](https://yos.io/tag/ethereum/)
- [Solidity](https://yos.io/tag/solidity/)
- [Serverless](https://yos.io/tag/serverless/)
- [API design](https://yos.io/tag/api-design/)
- [Distributed systems](https://yos.io/tag/distributed-systems/)

## Feeds and discovery

- [Atom feed](https://yos.io/feed.xml): Recent posts in Atom format.
- [XML sitemap](https://yos.io/sitemap.xml): Index of public canonical pages.