Agents In Use1125 use casesShowing 529–552
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note.comBillest built Travel OS eight days before an August 9 family trip to Nagasaki and Huis Ten Bosch. Markdown and YAML in GitHub held the plans, reservations, expenses and packing information; a Next.js site on Vercel displayed the latest version.
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Claudenote.comMonopo had 4,500 PayPay points due to expire on March 31 and wanted a useful purchase rather than letting them lapse. They asked Claude Code to find gadgets on Yahoo Shopping that could use those points and cost less than the corresponding Amazon offer.
AddedClaude
reddit.comCodex wrote and flashed an ESP32 bridge for a Bluetooth cat printer. Camera snapshots checked real paper output while the owner handled wiring and final checks.
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Codex
common-sense.comJohn Sambrook prepared S-Corp tax materials with Claude Code and Codex working in different roles. QuickBooks data and bank statements went into a private Git repository; Claude wrote Python scripts to compute forms, while Codex reviewed those scripts using a model configured for deeper reasoning.
AddedCodex
devpost.comCodex built Forage’s shopping workflow; tests found incomplete carts, substitution budget drift and invented attributes, leading to explicit checks and limits.
AddedCodexvia Codex build; GPT-5.6 Sol cart agent and Terra enrichment
letsgochristo.comChristo Roberts corrected Codex's initial itinerary editor, then shipped Daytripper with deterministic activity scoring, saved plans and preference checks.
AddedCodex
linkedin.comCodex organized 21 statements into a balance database for family scenarios; Jesse Dhillon supplied assumptions and retained review, with key accounts missing.
AddedCodexnote.comAfter a new baby brought more visiting relatives into the house, Roji used Codex to build a small drinks-order system for guests. It was a household tool, with no plan to turn it into a public service. The author says it took about two days to build and was still in use at home.
AddedCodexnote.comEriko wanted to make a monthly ten percent shopping discount useful without buying items the household already had. Living in Sydney meant buying meat, vegetables, everyday supplies and Japanese goods from different places, while actual stock levels were still managed from memory.
AddedCodexdevpost.comCodex built a live robot mission simulation with checked routes, memory, and audit evidence; its owner kept optional physical camera access strictly read-only.
AddedCodexdevpost.comCodex debugged an Astartis MCP control plane with seven inspection and simulation tools; its creator retained policy authority and gated destructive functions.
AddedCodexvia Codex with GPT-5.6
simonwillison.netSimon Willison used Codex voice mode to build Django newsletter imports and searchable archives, then reviewed a pull request and corrected private-repo access.
AddedCodexdevpost.comCodex built a phone-to-USB bootstrap bridge with independently observed terminal output. Review fixed queue ownership; remote-control claims remained limited.
AddedCodexvia Codex implementation; GPT-5.6 independent reviewdevpost.comCodex helped build ÉLANE’s separate outfit staging, private concept preview and approved cart changes; the demo stopped before checkout and made no fit promise.
AddedCodexvia Codex development; compatible external agent in shopping demo
nomaditsu.comRay de Guzman used Codex and Claude planning to build a Shopify publishing MCP server, reviewing phase reports while Codex built, tested and deployed tools.
AddedCodexvia Codex with Claude planning in Notiondevpost.comCodex built Neural Apex’s strategy-run experiment with telemetry and local explanation fallback; its source labels AI mechanics as educational approximations.
AddedCodexKian Kyars coordinated Codex, Gemini and Claude workers on a Rust SQLite-like engine, using task locks, shared notes and sqlite3 checks while noting limits.
AddedCodexvia Codex CLI alongside Gemini CLI and Claude Codedevpost.comCodex-assisted development produced a shopping state machine that retains useful constraints and forgets replaced intent; gains concern public evaluation.
AddedCodexvia Codex-assisted development; deterministic local runtime
developers.openai.comCodex built a space game linking flight, landing, walking and takeoff. Journey tests checked transitions while the maker judged controls and rendering limits.
AddedCodexvia Codex with Astrareddit.comCodex wrote firmware for a homemade ESP32-S3 USB macropad. Its maker wired keys, printed the enclosure and published code, CAD and shortcut setup documentation.
AddedCodexdevpost.comCodex helped build VibeStick’s embedded status display, local bridge, and voice path, with explicit human checkpoints for flashing and Mac permissions.
AddedCodexdevelopers.openai.comCodex helped wire an LED wall and build its voice interface. Real trials exposed missing image tools and conversation context while the owner checked hardware.
AddedCodexdevpost.comCodex built a two-level WebMCP puzzle with unequal human and agent information, dynamic tools, and reconnection; its creator retained art and playtesting.
AddedCodexdevpost.comCodex built an offline causal-chain game with order-sensitive scoring and trap penalties; missing model access falls back, while live multiplayer stays future.
AddedCodex