AI agents for coding: 68 real examples
Agentic Feats lists 68 sourced examples of AI agents doing coding work; 42 link the artifact; most common agent: Claude Code (26). Newest first.
- Feats
- 68
- Shown
- 4262%
- Agents
- 13
- Updated
- Oct 13
Androidclaw traces broken builds to the relevant pull request and incident, and sometimes prepares and merges fixes itself.
OpenAI build-fix agent on OpenClaw
An OpenAI engineer reports an internal OpenClaw agent, Androidclaw, working across Git, GitHub and logs to trace broken builds back to their causes.
The unfinished output is work the author would have quoted at about €2.5k, built in one overnight run.
Marketing site from Figma
Devin AI connected to a Figma file through MCP and built a WordPress marketing site with easy content management overnight.
A live game with 87 rules, 33 conditions, 14 spells and 15 monsters in two editions, answering rules questions in about 1.3 to 2.2 seconds.
Rule-citing AI dungeon master game
The author built a browser D&D 5e dungeon crawl whose AI Dungeon Master answers rules questions by looking up and citing rules stored in Sanity.
Claude pulled 60 documentation pages into local Markdown files in about 49 seconds, including roughly 10 seconds of backend cold start.
Docs crawler MCP server
Claude used the author's pulpie-mcp server to crawl a documentation site and save every page locally as clean Markdown files.
It cost about two months of Pro subscription over half a working day, and ended up slightly slower than doing the migration by hand.
Password reset migration experiment
Claude Code with Opus migrated a password reset flow in a legacy web app, with the author closely supervising under a pre-made plan.
The author got a working Rust editor, .NET 10 scripting, multi-threaded runtime, culling, weather, lighting, water simulation and hot reloading within minutes.
Game engine from one prompt
Grok Bot ran four bots with one coordinator and built a Unity-style game engine from a single prompt, in minutes.
Db2 support shipped in under two days for a $4172 token bill, versus 9 months and about $160K for Oracle; 27 PRs merged.
Hospital-style agent pipeline ships Db2 support
Cockroach Labs ran a multi-role coding agent pipeline modeled on a teaching hospital to add Db2 support to its MOLT migration tool.
All three produced a playable multiplayer game with a map list and saved rooms; Opus won on visuals, Gemini on backend, Codex landed in between.
Three agents build multiplayer Counter Strike
The Instant team gave Codex, Claude Opus 4.5 and Gemini 3 Pro the same prompts to build a 3D multiplayer Counter Strike clone.
Claude handled analytics, pricing, staffing and simple stall placement well, but failed at pathways, large coasters, and vertical terrain. The mod took about 40 hours.
Claude Code plays RollerCoaster Tycoon
Ramp Labs forked OpenRCT2, built a kubectl-style CLI, and let Claude Code manage a theme park through it.
About 19k lines of Rust across 154 commits in three days. The engine passes 64 SQLLogicTest queries and 282 AI-written unit tests.
SQLite-like engine in Rust
Claude, Codex, and Gemini workers, two of each, built a SQLite-style database engine in Rust by claiming tasks through git lock files.
Shipped llm-coding-agent 0.1a0 to PyPI with six file and shell tools, a CLI and a Python API; it built a working ASCII-art clock app.
Coding agent built on LLM
Claude Code on the web wrote a spec, then built and tested a coding agent library on LLM using red/green TDD.
Out of 20 tasks, Devin had 14 failures, 3 successes, and 3 inconclusive results, with no pattern predicting which would work.
Month of Devin tasks
Devin was given more than 20 real coding, research, and code-modification tasks over a month by an Answer.AI team to test its autonomy.
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Out of 20 tasks, Devin had 14 failures, 3 successes, and 3 inconclusive results, with no predictable pattern for which would work.
Month-long Devin trial
Devin was tested by the Answer.AI team on 20+ real coding, research, and code-modification tasks over a month through Slack.
The author upgraded kentcdodds.com across all dependency tiers, finishing a Remix v2 to React Router v7 migration with routing matching the original structure.
Dependency and framework upgrade
Cursor listed outdated packages by upgrade difficulty, then upgraded them in stages, including Remix v2 to React Router v7 on a 42k-line site.
Devin opened a PR in about four hours and got the build passing, but runtime issues remained and the author gave up.
Vue 2 to Vue 3 migration
Devin was asked to migrate a production Electron app from Vue 2 to Vue 3 with Composition API, script setup, and Pinia.
The author shipped a redesigned personal site, nearly right in one shot, after a few more iterations.
Personal site redesign with Codex
Codex CLI redesigned the author's personal site after reading a design prompt copied from Anthropic's frontend-design plugin into a local markdown file.
Prototyping, code completion, commenting and documentation earned A grades; web scraping, code tidying and getting started got D; dataframe manipulation and code generation got C.
Cursor for data science scorecard
The author used Cursor on a real data science project in Python and graded it across general coding and data tasks.
A working prototype runs on the handset over mobile data: typed chat via DeepSeek, battery check, torch, calls and alarms, tested on the phone.
AI chat app on Nokia 110
Codex helped the author reverse-engineer a Nokia 110 4G's firmware and build a native AI chat app with a custom agent.
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Proof marks:Shown artifact linked·Numbers a specific number stated·Claim claim only