Codex app

Evidence (16)

• 4Simon Willison·8/7/2026product_launch
  Codex Builds a Better Raccoon Heist Game with GPT-5.6 Sol Ultra

  Simon Willison compared the same one-shot game prompt across different coding agents and found Codex Desktop running GPT-5.6 Sol Ultra produced a more compelling Raccoon Heist game than a previous Claude Fable 5 attempt. The post also notes a visible bug in the generated game, which was later fixed with a follow-up prompt, and includes the full Codex transcript plus repository assets generated during the session.

• 3Simon Willison·7/14/2026open_source
  Simon Willison’s custom Codex Desktop pet, Pedalican

  Simon Willison describes creating a custom Codex Desktop pet: a pelican riding a bicycle that animates on his desktop and reports on Codex tasks. He also details how GPT-5.6 Sol, along with multiple rounds of gpt-image-2, generated the sprite assets and notes that the implementation relies on open-source skills from OpenAI.

• 8Hacker News·7/14/2026security
  Leaked ICM schedule appears to reveal 2026 Fields Medal winners

  Front-end code from the official ICM 2026 schedule reportedly exposed four hidden Fields Medal lecture entries, and a Codex-generated curl command surfaced the names Yu Deng, John Pardon, Jacob Tsimerman, and Hong Wang. If confirmed on July 23, the leak would mark a historic edition of the award, including the first time two Chinese mathematicians receive Fields Medals in the same year.

• 2Hacker News·7/9/2026research
  Developer says LLM output fatigue is setting in

  A developer describes spending hours each day using LLMs for coding, search, and code review, and says the tools have made them more productive. Over time, however, repeated exposure to similar writing patterns, hallucinations, and stylistic quirks has become tiring and frustrating.

• 4Hacker News·7/8/2026open_source
  Geosql: Claude/Codex Skill for Geospatial Data

  Geosql is an open-source skill designed to help Claude and Codex work with geospatial data and queries. The project appears aimed at making map- and location-based analysis easier for AI coding assistants.

• 7Hacker News·7/7/2026product_launch
  Rowboat launches as an open-source local-first alternative to Claude Desktop

  Rowboat is a local-first, open-source work app designed to go beyond chat by embedding AI assistants into dedicated work surfaces such as email, meeting notes, browser tasks, coding, and notes. It stores data as Markdown files, supports any LLM including local models via Ollama or LM Studio, and lets users build and install custom apps inside the platform.

• 2Hacker News·7/3/2026research
  Hacker News discussion on better LLM coding workflows

  A Hacker News post asks whether anyone is experimenting with fundamentally different ways to use LLMs for coding, beyond the current prompt-response loop. The author says tools like Claude Code and Codex interrupt flow and suggests a tab-based model may be a better direction.

• 5Simon Willison·6/30/2026framework_update
  shot-scraper adds storyboard-based video recording for web demos

  shot-scraper 1.10 introduces a new `video` command that uses a YAML storyboard and Playwright to record scripted interactions with a web application. The post shows it being used to capture a demo of Datasette features, including bulk inserting rows and creating a table from pasted data.

• 8OpenAI Blog·6/22/2026security
  OpenAI launches Daybreak cybersecurity tools

  OpenAI introduced Daybreak, a new set of tools designed to help organizations identify, validate, and patch security vulnerabilities at scale. The launch includes Codex Security and GPT-5.5-Cyber, positioning the tools for defensive cybersecurity workflows.

• 6Martin Fowler·4/29/2026framework_update
  AI Coding Shifts Toward Harness Engineering and Verification

  Martin Fowler highlights updated guidance from Chris Parsons and related work on harness engineering, emphasizing small changes, strong guardrails, and automated verification before code is shipped. The discussion also points to tools and techniques such as Claude Code, Codex CLI, static analysis, and tests as central to agentic software development.

• 8OpenAI Blog·4/21/2026product_launch
  OpenAI scales Codex for enterprise deployment

  OpenAI introduced Codex Labs and said it is working with partners including Accenture, PwC, and Infosys to help enterprises deploy Codex across the software development lifecycle. The company also reported that Codex has reached 4 million weekly active users.

• 5OpenAI Blog·3/16/2026security
  Why Codex Security Skips Traditional SAST Reports

  OpenAI explains that Codex Security does not depend on conventional static application security testing reports. Instead, it uses AI-driven constraint reasoning and validation to identify real vulnerabilities while reducing false positives.

• 6OpenAI Blog·3/6/2026security
  Codex Security enters research preview

  OpenAI has introduced Codex Security, an AI application security agent that analyzes project context to identify, validate, and patch complex vulnerabilities. The company says it is designed to reduce noise and improve confidence in security findings.

• 6OpenAI Blog·2/4/2026framework_update
  OpenAI details the Codex App Server

  OpenAI explains how it built the Codex App Server, a bidirectional JSON-RPC API for embedding the Codex agent into applications. The server supports streaming progress updates, tool use, approvals, and code diffs to help developers integrate agentic workflows.

• 7OpenAI Blog·2/2/2026product_launch
  OpenAI launches Codex app for macOS

  OpenAI has introduced the Codex app for macOS as a command center for AI-assisted coding and software development. The app supports multiple agents, parallel workflows, and long-running tasks to help manage more complex development work.

• 6OpenAI Blog·1/23/2026framework_update
  Inside the Codex Agent Loop

  OpenAI provides a technical deep dive into how the Codex agent loop works in Codex CLI. The post explains how it orchestrates models, tools, prompts, and performance using the Responses API.