# vercel-labs/fx0

> A lightweight design agent built on libfx: describe a page in words and the agent writes it as a single HTML file. Also a working example of an app built on libfx with durable sessions.

- Magnitude: 5.9 out of 10 — Early signal
- Stars: 127 total · +20 stars measured 2026-10-20, 00:23–01:47 UTC, ≈ 148 by evening
- Star trust: star growth looks organic
- Category: AI agents · Language: TypeScript · License: Apache-2.0 · Created: 2026-10-19 · Last push: 2026-10-19
- GitHub: https://github.com/vercel-labs/fx0 · Homepage: https://fx0.vercel.dev · Page: https://gitnova.dev/en/r/vercel-labs/fx0

## Useful for

- Generate a single-page HTML mockup from a text description
- Build your own libfx agent using fx0 as a reference
- Resume an interrupted agent turn without losing progress

## Why it’s here

- Star-counter measurements on 2026-10-20 (UTC), 00:23–01:47: 107 → 127 stars (+20). This is the change over that interval.
- Estimated end-of-day forecast: about +148 stars, using observed gains and the previous day.
- The repository is 1 day old and already has 127 stars. With less than two weeks of history, there's no usual pace to compare the spike against yet.
- Top new repositories this week: #147.
- About 56 forks a day — people are taking the code.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 25
- Issues and pull requests: 8
- Watchers: 0
- Average over the last week: 139 per day
- Usual pace: too little history (under two weeks)
- Stars in the last hour (measured): 14

## Stars per day, last 2 days (oldest → newest, today is partial)

2026-10-19 … 2026-10-20: 130, 20

## Spotted in now

- Top new repositories this week: #147

## More in this category

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   A framework for recursive optimization of AI agent harnesses (prompts, tools, memory, skills) without fine-tuning model weights, with JobBench, LAB and WorkBuddy-Bench benchmarks.
   Full card: https://gitnova.dev/en/r/google-research/harness2.md
2. **MadsLorentzen/ai-job-search** — 9.2 · Breakout · AI agents · Python · +221 stars measured 2026-10-20, 00:22–01:47 UTC, ≈ 3,100 by evening
   A job application framework built on Claude Code: evaluates postings, tailors CVs, and writes cover letters. Runs locally, focused on the Danish job market.
   Full card: https://gitnova.dev/en/r/MadsLorentzen/ai-job-search.md
3. **xerj-org/xerj** — 7.3 · Breakout · AI agents · Rust · +34 stars measured 2026-10-20, 00:22–01:47 UTC, ≈ 1,693 by evening
   A local Rust search engine that auto-indexes folders of code, docs, logs and PDFs so AI agents retrieve exact passages instead of reading whole files. Elasticsearch-compatible and cuts token usage for agents.
   Full card: https://gitnova.dev/en/r/xerj-org/xerj.md
4. **IsuruMaduranga/harness-engineering-101** — 7.2 · Early signal · AI agents · Python · +3 stars measured 2026-10-20, 00:22–01:47 UTC, ≈ 219 by evening
   A book series explaining how to build AI agents from first principles, treating the LLM as a stateless brain and the harness as the program that manages the conversation array. It grows a ~300-line toy agent in plain Python across 16…
   Full card: https://gitnova.dev/en/r/IsuruMaduranga/harness-engineering-101.md
5. **anomalyco/opencode** — 7.2 · Breakout · AI agents · TypeScript · +71 stars measured 2026-10-20, 00:22–01:47 UTC, ≈ 981 by evening
   Open source AI coding agent with terminal and desktop interfaces. Ships with a build agent (full edit and command access) and a read-only plan agent for code analysis.
   Full card: https://gitnova.dev/en/r/anomalyco/opencode.md

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-10-20 01:58 UTC, updated every 30 minutes.