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AoAH Day 20: Human language detection in native code, JS and wasm

Porting the Nu HTML Validator's language detection to OCaml, then optimizing from 115MB to 28MB and fixing WASM array limits for browser deployment.

20 Dec 2025

Anil Madhavapeddy's Blog

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AoAH Day 19: Zulip bot framework to bring Vicuna the friendly camel back

Building an OCaml Zulip bot framework with functional handlers, and pivoting from TOML to INI codecs for Python configparser compatibility

19 Dec 2025

Anil Madhavapeddy's Blog

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AoAH Day 18: TOML 1.1 codecs directly from the spec and paper

Building tomlt, a pure OCaml TOML 1.1 parser with bidirectional codecs following the jsont design patterns

18 Dec 2025

Anil Madhavapeddy's Blog

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Claude and Dune

18 Dec 2025

Jon Ludlam's Blog at recoil.org

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Partridge Puzzle

Quite often, you install a new package from opam and are keen to jump right in and want a tailored example for your use case. This happened to me during Day 12 of Advent of Code.

17 Dec 2025

Marc Elvers

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AoAH Day 17: OCaml JMAP to plaster my painful email papercuts

Building an OCaml JMAP client that runs in browsers and CLI, then using it to build personalised email workflows for taming notification overload.

17 Dec 2025

Anil Madhavapeddy's Blog

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AoAH Day 16: Vibesplaining JSON Pointers using OCaml/Javascript

Building interactive OCaml tutorials that compile to JavaScript, using agents to generate executable documentation that teaches protocols like JSON Pointer while you code review.

16 Dec 2025

Anil Madhavapeddy's Blog

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AoAH Day 15: Porting a complete HTML5 parser and browser test suite

Vibespiling JustHTML from Python to pure OCaml, achieving 100% pass rate on the browser html5lib test suite using agentic workflows.

15 Dec 2025

Anil Madhavapeddy's Blog

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AoAH Day 14: Debugging a Karakeep CLI against the live service

Vibe coding an OCaml library for the Karakeep bookmarking service by giving an agent a live API key and letting it debug jsont codecs against the real service.

13 Dec 2025

Anil Madhavapeddy's Blog

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