# Pranit Sharma

> Agent Harness Engineer at Vercel. Previously built Orbit at Recursive Labs.

I'm Pranit, and I make developer tools at [Vercel](https://vercel.com/). I'm currently building [fx](https://fx.sh/), a small open-source coding agent written in Zig. It runs in your terminal or inside other apps. Before Vercel I founded [Recursive Labs](https://recursive.ac/), where I built [Agents SDK](https://www.agentsdk.build/) and [Orbit](https://orbit.build/), an AI-native IDE for macOS. I also write about building software with AI.

## About

- [Profile](https://www.fazxes.com/index.md): Bio, work history, projects, writings, and skills in one file

## Writings

- [High, Extra High, Max, Ultra: Reasoning Levels Are Making Models Dumber](https://www.fazxes.com/blog/reasoning-levels-are-making-models-dumber/index.md): I tested Fable 5, Opus 4.8, GPT-5.5, and GPT-5.6 at every reasoning level they ship. Past a point, more effort means more hallucination, not more intelligence. The research backs this up, and the labs aren't telling you.
- [Measure Once: Rebuilding Chat Virtualization for AI-Era Apps](https://orbit.build/blog/measure-once-ai-chat-virtualization): Our chat scrolled like it was drunk. Then we realized LLM apps break the assumptions every virtualization library was built on. Here's what we changed.
- [Introducing OPS: The System That Makes AI Write Code Like a Senior Engineer](https://orbit.build/blog/introducing-ops-orbit-protocol-server): AI writes working code that ignores your conventions. OPS is 17 subsystems of real-time enforcement that turn suggestions into laws, so every AI-written line meets your standards.
- [Introducing Nightshift: An Autonomous Overnight Agent That Actually Works](https://orbit.build/blog/introducing-nightshift-autonomous-overnight-agent): Nightshift is an open-source Python orchestrator that runs AI agents overnight to harden your codebase, build features, and produce auditable shift logs by morning.

## Skills

- [align-scope](https://www.fazxes.com/skills/align-scope/index.md): Goes through every decision in a pull request, proposal, issue, or plan with you, one at a time, before any planning starts.
- [blueprint-first](https://www.fazxes.com/skills/blueprint-first/index.md): Has an agent study the codebase before it plans or writes code, the way a senior engineer would.
- [code-simplifier](https://www.fazxes.com/skills/code-simplifier/index.md): Cleans up recently edited code for clarity without changing what it does. Making no edits is a valid outcome.
- [hand-written](https://www.fazxes.com/skills/hand-written/index.md): Rewrites prose so it reads like a skilled professional wrote it, not a language model. Has professional, semi-casual, and casual modes.
- [humanizer](https://www.fazxes.com/skills/humanizer/index.md): Rewrites AI-sounding text so it reads like the writer, without changing what it says. Based on Wikipedia's Signs of AI writing.
- [impeccable](https://www.fazxes.com/skills/impeccable/index.md): Design guidance for frontend interfaces: websites, dashboards, product UI, and native iOS and Android screens.
- [problem-clarifier](https://www.fazxes.com/skills/problem-clarifier/index.md): Interviews you about a bug or feature request and reflects it back, so the problem is clear before planning starts.
- [pure-core](https://www.fazxes.com/skills/pure-core/index.md): Keeps a pure core and pushes side effects to the edges, in any language.
- [write-swift](https://www.fazxes.com/skills/write-swift/index.md): How to write modern Swift: value types, Swift 6 concurrency, protocols and generics, API design, and testing.
- [zig-0.17](https://www.fazxes.com/skills/zig-0.17/index.md): What changed in Zig 0.17, and how to move 0.16 code over without silent behavior changes.
- [zig-best-practices](https://www.fazxes.com/skills/zig-best-practices/index.md): Guidance on correctness, ownership, error handling, and testing for Zig 0.17 and later.

## Optional

- [GitHub](https://github.com/fazxes): Code and open-source projects
- [X](https://x.com/fazxes): Posts
- [Sitemap](https://www.fazxes.com/sitemap.xml): Every page meant for search engines