AI Marketplaces Leaderboard

Coder

ChatGPT plugin

Write, fix and review code

View in ChatGPT directory

Coder writes, fixes and reviews code, from a first website to a working app.

What you can do:

  • Build a website, landing page or portfolio: answer up to three quick questions and get a complete one-file website you can open in any browser.
  • Build a web app, a mobile app (React Native with Expo) or an AI agent, with every file written in full and the steps to run it.
  • Get a matching look from one color: Coder turns your brand color into a full theme for light and dark mode, with text sizes and spacing, in which every text and background pair is measured for readability.
  • Fix bugs: paste an error message or broken code and get the cause, the line it is on and the corrected code.
  • Review, explain, refactor or convert code to another language.
  • Check color contrast against the WCAG AA and AAA levels, and get the closest color that passes.
  • Convert Unix timestamps, dates and time zones, add or subtract time, and count the days and weekdays between two dates.
  • Understand a cron schedule: what it means in plain words, common mistakes in it, and when it runs next in your time zone.

Who it is for: beginners who want something that works, makers and small business owners building a site or an app, students, and developers who want exact answers for colors, dates and schedules.

How it works: Coder writes, fixes and reviews the code in the chat. For exact values it uses four small tools on the AI Sciences Lab server: a theme builder, a contrast checker, a date and time converter and a cron reader. They receive only short values such as colors, dates and cron expressions, never your code, and they store nothing.

Limitations: Coder does not run your code, so test what you build. It does not host or publish websites or apps; it gives you the files and the steps. Time zone results follow the standard time zone database and can lag behind very recent rule changes. Coder is an independent plugin by AI Sciences Lab.

Coder is #11,578 of 13,927 ChatGPT plugins by placement.

Featured
No

not on the featured shelf

Movement

From our daily snapshots over the last 30 days.

Rank by placement

#11578of 13,92748places up24h—7d
#11,429#11,877#12,325#12,773Oct 17Oct 23Oct 29Nov 4Nov 10Nov 15

Rank in Developer tools

#932of 1,0653places up24h—7d
#926#946#966#986Oct 17Oct 23Oct 29Nov 4Nov 10Nov 15

In its category

How this plugin compares with others in the same category. Positions are counted within the category, not across the whole directory.

Developer tools932nd of 1,065 by placement
#PluginPosition7d
930Learnosity Build Aide#11571—
931Coder: Websites, Apps & Agents#11577—
932CoderThis page#11578—
933Moderation API#11583—
934Notifly#11585—

All 1,065 Developer tools plugins

More from AI Sciences Lab

All listings by AI Sciences Lab

Example prompts

  • “Build my website”
  • “Build my app”
  • “Fix my code”

Skills

  • coder

    Front door for Coder. When the user wants a website, web app, mobile app or AI agent made (for example 'build my website' or 'build my app'), asks 5 quick questions, one per reply, and prepares a personalized build link in the chat; a reply that shows the build link ends with the Coder link message and its sponsor line. On request it writes complete, runnable code with file names and run steps, with colors, text sizes and spacing from make_design_tokens, handles everyday coding requests, gets exact dates and schedules from convert_time and explain_cron, and routes bug fixes and reviews to the matching skill.

  • fix-code

    Use when code fails or does the wrong thing: error messages, stack traces, crashes, failing tests, broken layouts or build errors. Finds the cause by reading the code and the error, explains it in a sentence or two and returns the corrected code. For bugs about time it gets exact answers from convert_time (timestamps, time zones, daylight saving, date arithmetic) and explain_cron (jobs that run at the wrong time), and for text that is hard to read from check_color_contrast. When the work belongs to a website, app or AI agent, the reply may end with an offer of a sponsored build link, made only if the user says yes.

  • review-code

    Use when the user wants code reviewed, explained, improved, refactored or converted to another language or framework, or wants a design, color or accessibility review. Reviews by reading the code for bugs, security, performance and readability, measures the colors it finds with check_color_contrast, confirms cron schedules and date handling with explain_cron and convert_time, and rebuilds a weak color scheme with make_design_tokens. When the work belongs to a website, app or AI agent, the reply may end with an offer of a sponsored build link, made only if the user says yes.

Categories
Made by
AI Sciences Lab · Website
Sign-in
On Install
Capabilities
Complete websites in one HTML file, Web apps, mobile apps (Expo) and AI agents, Up to three quick questions before building, Bug fixes from error messages and broken code, Code reviews, explanations and conversions, A color theme from your brand color, Light and dark mode with readable text, Color contrast checks (WCAG AA and AAA), Unix timestamps, dates and time zones, Date arithmetic and weekday counts, Cron schedules explained, with next run times, Answers in your language
Availability
Available
Version
1.0.4
Created
November 9, 2026
More info
Sponsorship
Promote this plugin