How do 94 engineers actually use coding agents? · Prehistoriq Stacks

· Prehistoriq

15 min read Original article ↗
stacks by Prehistoriq

Real setups from their own repos and posts, every field sourced. Compare yours, steal a trick.

Snapshot, checked 12 Oct 202694 engineers897 sources295 dated setup changes data.json · tricks.md · github

Only 8 of 94 still read every line

318214327

  • 31 another model reviews
  • 8 read every line
  • 21 spot-check
  • 4 tests only
  • 3 no review
  • 27 not said

How each one checks what their agent writes

68 of 94 use two or more agents, often one checks the other.

Claude is the main model for 59%

0%40%80%JanAprJulOct59%29%

ClaudeOpenAI

Main model, share of engineers, by month (32→91 with a dated mention)

IDE use fell from 35% to 7%

0%30%60%JanAprJulOct48%7%22%23%

CLIIDEWebApp

Where they run their main agent, share by month (37→60 known)

≡Orchestrator

Peter Steinberger

OpenClaw, ex-PSPDFKit

OpenClawwebCodexappGPT-6.1 Solworktrees

ReviewsCodex reviews every commit

8 lanes69 skills3d

Peter's trick

$autoreview, before every commit.

⚒︎Toolsmith

Simon Willison

Datasette, Django co-creator

CodexappClaude CodewebGPT-6 SolOpus 5.5phone remote

ReviewsCross-model review: Claude checks GPT, GPT checks Claude

4 skillsAGENTS.md3w

Simon's trick

Showboat, agents demo their own work.

You?

You?

Compare your setup with these 94

Paste into Claude Code or Codex. Nothing is sent to us unless you press Publish.

⁂Swarm Lord

Boris Cherny

Created Claude Code

Claude CodeappClaude TagFable 5.1worktrees

ReviewsReads diffs only for critical code

5 local + 5–10 web2 hooks1mo

Boris's trick

/go, test, /simplify, open PR.

◇Purist

Andrej Karpathy

nanochat, coined “vibe coding”

Claude CodecliCodexFable 5Ghostty + IDE

ReviewsWatches agents like a hawk in an IDE

1 skillprogram.md3mo

Andrej's trick

autoresearch, overnight agent research.

◇Purist

Mitchell Hashimoto

Ghostty, HashiCorp co-founder

Claude appappCodex appappFableGPT-6 Astradesktop apps

ReviewsHand-reviews every line; agents validate, he writes all prose

2 agents2 skills1mo

Mitchell's trick

Harness engineering, after every agent mistake.

⚒︎Toolsmith

DHH

Ruby on Rails, Omarchy

CodexcliClaude CodecliOpenCodecliGPT-6.1 SolOpus 5.5

ReviewsA second model reviews, then he reads the diff

2 at once3 skills6d

DHH's trick

"Review this with claude", adversarial review from Codex.

⚒︎Toolsmith

Armin Ronacher

Flask, Earendil founder

PicliCodexSolFableGhostty + tmux

ReviewsSteers as it goes, reviews when the agent says done

1 hook18 skills1w

Armin's trick

/answer, in place of plan mode.

⁂Swarm Lord

Theo Browne

T3 Stack, T3 Chat, T3 Code

Claude CodeappCodexappOpus 5.5Muse Wonderremote Linux

ReviewsOpus asks Wonder for code review; agents merge when confident

40+ threads1 hook3d

Theo's trick

T3 Code, his own GUI over every agent.

⚒︎Toolsmith

Salvatore Sanfilippo (antirez)

Redis creator, DwarfStar (ds4)

CodexcliClaude Codeclids4-agentcliGPT-6 Astra / GPT-6.1 SolFable

ReviewsStill reviews Redis code, calls it mostly pointless

AGENT.md2w

Salvatore's trick

QA_BEFORE_RELEASES.md, an agent QA pass per release.

§Rules Lawyer

ThePrimeagen

Harpoon, Vim on stream

Cursoride99ideGrok 4.6terminal + 99

19 skills1w

ThePrimeagen's trick

Field guide, agent writes its own lessons.

⁂Swarm Lord

Steve Yegge

Gas Town, Beads, Vibe Coding

Claude CodecliCodexOpus 5.5Fable 5.1Emacs + tmux

ReviewsFable reviews every Opus change; he doesn't read code

20+ agents1 MCP6d

Steve's trick

Seats, 18 long-lived Fable officers.

∿Vibe Maximalist

Pieter Levels

Photo AI, Nomads.com

Claude CodecliOpus 5.5Fable 5.1VPS + tmux

ReviewsStep by step, keeps the agent on a short leash

5d

Pieter's trick

tm, a tmux session per site.

◇Purist

Mario Zechner

pi coding agent, libGDX

PicliGPT-5.5phone

ReviewsLimits daily output to what he can review

no MCP8 skills1w

Mario's trick

Daily code limit, sized to what he can review.

≡Orchestrator

Thorsten Ball

Amp co-founder, interpreter book

AmpwebOpus 5.5GPT-6 Astraorbs

ReviewsSpot checks and architecture, not every line

AGENT.md2w

Thorsten's trick

“Irrefutable proof”, video proof, not line reads.

§Rules Lawyer

Jesse Vincent

Superpowers, Keyboardio, K-9 Mail

Claude CodecliEvenerMuseOpusHaiku

ReviewsAgent sessions do adversarial review

1 hook15 skills2w

Jesse's trick

/par, rival reviewers, 5 points.

∿Vibe Maximalist

Harper Reed

CEO 2389.ai, CTO Obama 2012

Claude CodecliCodexappFable 5.1GPT-6 Astratmux + mosh

ReviewsOne fresh-eyes review pass per change

a dozen2 hooks2w

Harper's trick

"fresh eyes" review, a subagent rereads the code.

◇Purist

Kent Beck

TDD, Extreme Programming, JUnit

Claude CodecliCodexcliGeminilive sessions

ReviewsReviews solo, would rather be pairing

one at a time5 skills1mo

Kent's trick

TCR skill, red tests revert the code.

⚒︎Toolsmith

Kieran Klaassen

Compound Engineering, Cora

CursorClaude CodecliCodexOpus 5.5Sonnet 5.5

ReviewsParallel review agents, no line-by-line reading

36 skillsAGENTS.md1w

Kieran's trick

/ce-compound, turns each fix into a lesson.

⚒︎Toolsmith

Matt Pocock

Total TypeScript, ex-Vercel

Claude CodecliOpus 5.5Opus 5Sandcastle

ReviewsReviews by merge danger, two-axis /code-review

1 hook27 skills1w

Matt's trick

/grill-me, before every change.

⚒︎Toolsmith

Indragie Karunaratne

Context, uniprof, Sentry AI lead

Claude CodecliCodexOpus 5.5GPT-5GitHub Desktop

ReviewsReviews the plan and prompts, not the 10,000-line diff

1 hook6 skills3d

Indragie's trick

Claudescope, transcript link in every PR.

≡Orchestrator

Addy Osmani

Claude Code at Anthropic, ex-Chrome

Claude CodeCodexFableworktrees

ReviewsCareful human review of core paths only

5 at once25 skills2w

Addy's trick

/loop PR triage, on Agent Skills, every day.

∿Vibe Maximalist

Geoffrey Huntley

Creator of the Ralph loop

OpenCodecliCursorwebLoomGPT-6.1 SolGLM / Kimi

ReviewsShips without manual review; stops only for high-risk changes

7 skills2 MCP2w

Geoffrey's trick

The Ralph loop, an agent in a bash while loop.

≡Orchestrator

Quinn Slack

Co-founded Amp and Sourcegraph

AmpwebAmp Dial: mediumorbs

ReviewsAgent reviews first, he scans diffs for red flags

AGENTS.md3w

Quinn's trick

"I'm feeling Pucky" button, starts half their work.

◇Purist

Dax Raad

OpenCode co-founder, SST

OpenCodeAstraFablephone + server

ReviewsAsks a smarter model to review, via subagents

2 MCPAGENTS.md1w

Dax's trick

Voice prompting (Hex), instead of typing.

≡Orchestrator

Nick Baumann

Codex at OpenAI, ex-Cline

CodexappGPT-6 AstraGPT-5.3-Codex-Sparkmonothread

3–6 threads1 skill4w

Nick's trick

"Chief of staff" thread, spawns every project thread.

≡Orchestrator

Adam Wathan

Tailwind CSS, Refactoring UI

AmpwebCodexappClaude CodewebSonnet 4.5cloud Orbs

AGENTS.md2w

Adam's trick

Every tedious OSS task, fed to cloud Claude Code.

⚒︎Toolsmith

Anthony Fu

Vitest, Slidev, UnoCSS, VueUse

Claude CodeCursorideSonnet 5.5Opus 5Storybook

ReviewsWatches the result: Storybook for agent UI, a pulls.review summary on every PR, then the final diff

26 skillsCLAUDE.md2w

Anthony's trick

antfubot, agents ship PRs as a bot.

≡Orchestrator

Andreas Kling

Ladybird browser, SerenityOS

Claude CodeCodexFrontier modelSSH fleet

ReviewsAdversarial review passes by different models

4 computers3w

Andreas's trick

Welfare checks, on workers across 4 machines.

◇Purist

Bryan Cantrill

DTrace, Oxide co-founder and CTO

Claude CodecliChatGPTOpus 4.8no closed loop

ReviewsSelf-review first: nobody else reviews LLM code until the responsible engineer has

2mo

Bryan's trick

This Old Repo, reviving a 1990s game.

⚒︎Toolsmith

Birgitta Böckeler

Thoughtworks, harness engineering

CursorideClaude Code PicliSonnetOpus 4.8

ReviewsRisk triage: probability, impact and detectability set how much she reads; sensors point her to where

1 hook6 skills2mo

Birgitta's trick

sensors check, a sidecar the agent polls.

≡Orchestrator

Burke Holland

Works on GitHub Copilot

GitHub CopilotappClaude CodewebLuna MaxOpus 5.5project leads

ReviewsRubber duck review by a second model family; he no longer reads the code

2 skills1 MCP4d

Burke's trick

A lead agent per project, he just files issues.

◇Purist

Andrew Gallant

ripgrep, Rust regex, Jiff

CodexcliGPT-5.6 Solsandbox

ReviewsFlags his LLM PRs for careful review, then simplifies them by hand; Codex review catches bugs too

1 hook3mo

Andrew's trick

"I wrote this PR with an LLM", flagged for careful review.

⚒︎Toolsmith

Calvin French-Owen

Segment co-founder, ex-Codex

CodexcliClaude CodecliFable 5GPT-5.6 Solworktrees

ReviewsSpot-checks the architecture; Cursor Bugbot and Codex review every PR

3–4 overnight tasks8 skills2mo

Calvin's trick

/pr-pass, loops until CI and bots pass.

◇Purist

Cat Wu

Claude Code product, Anthropic

Claude CodeappClaude TagOpus 5.5Fable 5.1auto mode

ReviewsClaude code review clears the outer layers; code owners review the core

1 hook1 skill3w

Cat's trick

Fresh config per model, reset at every model launch.

⁂Swarm Lord

Chip Huyen

AI Engineering author

CodexClaude CodeFableown runner

ReviewsA second agent reviews the plan; UI work comes with screenshot evidence on the PR

10 subagents per lead4 skills3mo

Chip's trick

Cross-provider runner, Codex, Claude spawn each other.

◇Purist

Chris McCord

Creator of Phoenix, Phoenix.new

Claude CodeClaudeone convo

ReviewsRules file names the tests to run before claiming a fix

CLAUDE.md1mo

Chris's trick

`notify msg`, in CLAUDE.md, not a hook.

⚒︎Toolsmith

David Crawshaw

exe.dev, Tailscale co-founder

ShelleywebOpenAI modelsfresh VMs

ReviewsReads agent code before it hits serious systems, trimmed by meat

2mo

David's trick

meat, strips diffs to what matters.

≡Orchestrator

Claire Vo

ChatPRD founder, How I AI host

CodexappClaude CodeCursorwebGPT-6 AstraOpus 5.5

ReviewsCross-model review: Opus 5.5 reviews GPT's PRs and vice versa; PRs also get human review

1 MCP3w

Claire's trick

LGTM, the PR closer, a bot that clears her PR queue.

≡Orchestrator

Dan Luu

danluu.com essays, ex-Centaur

CodexcliGPT-5.6 Solone-off loops

ReviewsHeavy randomized testing instead of human review

10 agentsAGENTS.md2mo

Dan's trick

Named-persona review panels, with contrarian personas.

⚒︎Toolsmith

Drew Breunig

"How to Fix Your Context", Plumb

Claude CodeFableGLM 5.2

ReviewsSteps through the decisions Plumb extracts at each commit instead of reading the diff

2 hooks4 skills4w

Drew's trick

Plumb, reviews decisions at commit.

⚒︎Toolsmith

Dex Horthy

HumanLayer CEO, 12-Factor Agents

HumanLayerideCodexClaude CodeGPT-5.6 SolFable

ReviewsStill reads the code, one 1k-3k PR at a time

7 skillsCLAUDE.md1w

Dex's trick

/show-me, diagrams, not walls of prose.

∿Vibe Maximalist

CodexappClaude CodeGPT-6 SolFableCodex tasks

ReviewsVibe codes; doesn't read the codebase

AGENTS.md3w

Dan's trick

"Want me to compound?", asked after every sweep.

≡Orchestrator

Alexander Embiricos

Codex product lead, OpenAI

CodexappCodex default modellong-lived thread

ReviewsReads the plan; Codex reviews nearly every PR

4 attempts1 skill6mo

Alexander's trick

"Using a subagent in parallel, do X", from one always-on thread.

◇Purist

Edward Z. Yang

PyTorch at Meta, ghstack

Claude CodecliCodexOpus 5.5Fable 5tmux -CC

ReviewsReads every line, steers with questions and edits

3 work streams2 hooks1w

Edward's trick

sl follow / sl adopt, restack parallel agents.

§Rules Lawyer

Fabien Sanglard

Game Engine Black Books

Claude CodeideAntigravityidesession per feature

ReviewsReads all the code; LLM criticizes first

agent.md2mo

Fabien's trick

"Reload agent.md", when code quality drops.

⚒︎Toolsmith

Filippo Valsorda

Go cryptography, age, mkcert

Shelley (exe.dev)webClaude CodecliGPT-6 AstraOpus 4.8exe.dev VMs

ReviewsLLM review before any human review

AGENTS.md3w

Filippo's trick

filippo-agent, agent's own GitHub account.

≡Orchestrator

Garry Tan

YC CEO, creator of gstack

Claude CodeappCodexcliFable 5.1Conductor

ReviewsEvery branch gets CEO, Codex, DX and eng review passes

10–15 sprints2 hooks1w

Garry's trick

/plan-ceo-review, finds the 10-star product.

?Skeptic

Jeff Geerling

Ansible, Raspberry Pi YouTube

ClaudewebOpus 5.5Fable 5.1chat + files

ReviewsReviews in stages, like a tech lead with juniors

3w

Jeff's trick

AI Disclosure, README names the exact model.

◇Purist

Geoffrey Litt

Malleable software, Notion

Claude CodeCursorideCodex CLIcliOpus 5Fable 5

ReviewsReads an explainer first, then the full diff; must pass a 5-question quiz before sending code on

2 skillsCLAUDE.md2mo

Geoffrey's trick

/explain-diff, with a quiz before he ships.

?Skeptic

George Hotz

tinygrad, comma.ai

OpenCodeKimiOpuslocal models

ReviewsReads and understands each line

AGENTS.md4d

George's trick

(kimi) in the PR title, names the model per PR.

⁂Swarm Lord

Jarred Sumner

Creator of Bun, now at Anthropic

Claude CodecliRoboBunFable 5workflows + /loop

ReviewsTwo adversarial Claude reviewers per implementer, then he reads the outputs

64 Claudes2 hooks3w

Jarred's trick

Adversarial review, 2 Claudes refute every change.

⚒︎Toolsmith

Jessica Kerr

Symmathesy, Honeycomb

Claude CodeOpus 5.5Sonnet 5.5subagents

ReviewsA reviewer agent checks each PR against a stated correctness condition; her own reviews fix the system

8 skills1 MCP4d

Jessica's trick

Capability Owners, standing agents per feature.

§Rules Lawyer

José Valim

Creator of Elixir, Tidewave

CodexTidewaveappSol 5.6review pane

ReviewsReviews agent PRs like any other code

AGENTS.md1mo

José's trick

Adversarial review agents, on compiler & security work.

⚒︎Toolsmith

Jeremy Howard

fast.ai, Answer.AI, ULMFiT

Claude CodecliSolveitwebCodexOpus 4.5persistent kernel

ReviewsSmall steps he follows one by one; the agent must propose before touching his published libraries

8 hooks10 skills1w

Jeremy's trick

claude-air, nudges after 8 silent rounds.

≡Orchestrator

Jason Liu

Instructor creator, OpenAI DX

CodexappGPT-5.5GPT-5.3-Codex-Sparkpinned threads

ReviewsReview skills modelled on colleagues' PR feedback; memory changes reviewed as git diffs

17 skills3 MCP3mo

Jason's trick

$ultragoal, goal kept in an editable file.

≡Orchestrator

Kent C. Dodds

Testing Library, Epic Web

Grok BotCursorwebGrok 4.5Fablecloud agents

ReviewsTrusts gates and AI reviewers, reads the outcome, not the diff

a dozen2 hooks4d

Kent's trick

/ship-pr, Bugbot loop, merge, Discord.

◇Purist

Kenton Varda

Cloudflare Workers, Cap'n Proto

Claude CodecliCloudflare OSwebFable 5.1Solplan first

ReviewsSol reviews every commit; he reviews the plan and the code

1 skill1 MCP1mo

Kenton's trick

plans/ in the repo, checked in for code review.

§Rules Lawyer

Steph Ango

CEO of Obsidian

Claude CodecliObsidian CLI

ReviewsRecorded test output must be read; fixture must fail before the fix

5 skillsAGENTS.md4w

Steph's trick

Fail-first fixtures, before every extraction fix.

≡Orchestrator

Lee Robinson

ML at SpaceX, ex-Cursor, Vercel

Grok BotappCursorwebOpus 4.5GPT-5.1-Codex-Maxalways-on bots

ReviewsReviews most of the code and tests it; Bugbot reviews every PR

2 skillsAGENTS.md2mo

Lee's trick

Plan mode, before every long agent run.

≡Orchestrator

Will Larson

Staff Engineer, CTO at Imprint

Claude CodeAgent FleetCodexGPT 5.4~10 workspaces

ReviewsSame harness reviews first, context cleared; humans after

five or so projects1 skill4w

Will's trick

/linear-project-loop, loops a project to its goal.

◇Purist

Maggie Appleton

Digital garden, GitHub Next

Claude CodewebCodexOpenCodeOpus 5Sonnet 4.6

ReviewsWatches the diffs, checks code in an IDE

23 skills1 MCP3w

Maggie's trick

maggie-design, her design taste, as a skill.

◇Purist

Alex Kladov

rust-analyzer, TigerBeetle

Claude CodecliClaude 3.7 Sonnetspec + skeleton

ReviewsOwns the structure, runs the code, does not vet the guts

plan.md5mo

Alex's trick

Hand-typed skeletons, Claude fills in the bodies.

∿Vibe Maximalist

McKay Wrigley

Founder, Takeoff AI

CodexappClaude CodecliOpus 5.5GPT-6 Astraagent swarms

ReviewsApproves without reading the code

9 AI tabs1 hook3w

McKay's trick

"You are AGI-pilled.", in every agent's system prompt.

⚒︎Toolsmith

Mike McQuaid

Homebrew maintainer since 2009

CodexcliClaude CodecliOpenCodecliFable 5OpenAI Codex 5.4

ReviewsReviews agent work before pushing it himself; depth depends on the code

2 hooksAGENTS.md3w

Mike's trick

AgentIDE, his own vibe-built agent IDE.

≡Orchestrator

Mike Krieger

Instagram co-founder, Anthropic Labs

Claude DesktopappOpus 5.5Sonnet 5.5coordinator Claude

ReviewsHands over whole goals and has Claude verify, then double-verify

2w

Mike's trick

iOS Claude pings Android Claude, to port each feature.

§Rules Lawyer

Max Woolf

Ex-BuzzFeed data scientist

Zed AgentideCodexcliClaude CodecliGPT-6 AstraGPT-5.6 Luna

ReviewsLuna subagents re-check until all satisfied; he watches benchmark diffs

7–12 subagentsAGENTS.md2w

Max's trick

codex exec Luna subagents, 7–12 cheap critics per pass.

⚒︎Toolsmith

Nathan Lambert

RLHF Book, Interconnects

Claude CodecliCodexFable 5GPT 5 ProDGX Spark

ReviewsLets agents catch their own mistakes, then checks the results himself

1 hook6 skills1mo

Nathan's trick

/gemini-feedback, Gemini critiques each diagram.

◇Purist

Ned Batchelder

coverage.py

Claude CodecliGitHub CopilotideLSP tool

ReviewsA person owns and reviews every commit, Claude or not

CLAUDE.md6mo

Ned's trick

Be introspective, Claude fixes its own rules.

◇Purist

Nolan Lawson

PouchDB, emoji-picker-element

Claude CodeCodexcliCursor BugbotwebOpus 4.7GPT 5.5

ReviewsThree agents hunt bugs in every PR; he triages the ranked report and guides the fixes

2 skills2mo

Nolan's trick

code-review-turbo, three-agent PR bug hunt.

◇Purist

Orta Therox

Puzzmo, CocoaPods, Danger

Claude CodeideClaude Code on the webwebFableclones

ReviewsReads all Puzzmo code; Claude reviews every PR too

3 clones1 skill2w

Orta's trick

/commit, human writes the headline.

≡Orchestrator

Paul Irish

Chrome DevTools, Lighthouse

CodexwebGitHub Copilot coding agentwebJuleswebGemini 3 Flash (preview)cloud PRs

ReviewsCodex bot reviews every PR; he has Copilot fix the findings

12 skillsAGENTS.md2w

Paul's trick

paulirish-agent, a GitHub account for agents.

◇Purist

Sebastian Raschka

Build an LLM From Scratch author

CodexClaude CodeQwen CodecliGPT-5.5Qwen3.6-35B-A3B

ReviewsWants to see what the agent is doing; writes the code he cares about himself

4mo

Sebastian's trick

Audit the agent first, before installing any harness.

⚒︎Toolsmith

Guillermo Rauch

CEO of Vercel

Guillermo's trick

gdp-ts, auth checks as type proofs.

⚒︎Toolsmith

Ryan Dahl

Creator of Node.js and Deno

Claude CodeCodexOpus 4.6standalone VMs

CLAUDE.md5mo

Ryan's trick

Claw Patrol, firewall between agents and prod.

≡Orchestrator

Sean Goedecke

Writing on AI and big tech

GitHub Copilot appappCopilot CLIcliGPT-6-AstraOpus 5.5Copilot app

ReviewsSkims each attempt for ~30 seconds, rejects most, then fully reviews the one he keeps

6–7 sessions per task1 skill3w

Sean's trick

30-second triage, rejects most agent attempts.

§Rules Lawyer

Sahil Lavingia

Gumroad founder

Claude CodeCodexFable 5GPT-6issue → PR

ReviewsDoes not just hit merge: QA, then asks a colleague to check

1 skillCONTRIBUTING.md1w

Sahil's trick

Fourth-wall check, enforced in CI on every PR.

≡Orchestrator

Ryan Carson

Founder of Untangle

DevinwebCodexOpus 5.5SWE 1.7Devin + Linear

ReviewsAgents review and land; he watches a test video first

1 hook1 MCP3w

Ryan's trick

!land playbook, refreshes skills on every PR.

≡Orchestrator

Steve Klabnik

Co-author of the Rust book, jj

Claude CodecliCodexappFableGPT Soljj workspaces

ReviewsCodex reviews Fable's PRs; humans stay responsible for what they submit

90 agents2 hooks1mo

Steve's trick

rue-overnight-hunt, bugs filed only with repros.

⚒︎Toolsmith

swyx

Latent Space, AI Engineer

CodexClaude CodecliDevinwebOpus 4.6Ghostty + cmux

ReviewsDevin Review bot comments on each agent PR, often after merge

1 hook99 skills1w

swyx's trick

$cassandra-creator, a standing dissent agent.

?Skeptic

Terence Tao

Fields Medal mathematician, UCLA

Claude CodeOpus 5sub-agents

ReviewsChecks results, doesn't read machine code

CLAUDE.md2w

Terence's trick

Five favorable conditions, before handing code to an agent.

≡Orchestrator

Thariq Shihipar

Claude Code team, Anthropic

Claude CodecliClaude TagFable 5Opus 5.5Claude Tag

ReviewsClaude writes an HTML report and a quiz on the change; he merges only after passing it

1 + a bunch in Tag2 skills3w

Thariq's trick

Change quiz, must pass before merging.

◇Purist

Sebastián Ramírez

FastAPI, Typer, SQLModel

CodexGPT-6 Astra/goal

ReviewsReviews and adjusts all AI code by hand

1w

Sebastián's trick

AI Disclaimer, names agent and model in PRs.

≡Orchestrator

Thibault Sottiaux

Codex & ChatGPT at OpenAI

CodexappGPT-5.6 SolGPT-6 Astraautomations

ReviewsReviews what the agent presents; uses a fast model to understand code, never delegates understanding

4 tasks2 skills1mo

Thibault's trick

Random-file bug hunt, automation, several times a day.

?Skeptic

Tom MacWright

Val Town, Placemark, ex-Mapbox

Claude Codecli PiSonnet 5GLM 5.2Neovim

ReviewsCareful human review of LLM fixes

1 skill2w

Tom's trick

Pi on GLM 5.2, as the security bug hunter.

⚒︎Toolsmith

Tobi Lütke

Shopify CEO, qmd

Claude Code PicliHermes AgentOpus 5.5GPT-6 Astra

ReviewsSpec suite the agent must pass

1 hook2 skills1w

Tobi's trick

qmd, local search, agents too.

⚒︎Toolsmith

Nikita Prokopov

DataScript, Fira Code

Claude CodeCodexOpus 5.5live nREPL

1 skillCLAUDE.md4d

Nikita's trick

Live nREPL for the agent, instead of app restarts.

⚒︎Toolsmith

Linus Torvalds

Creator of Linux and Git

ClaudeOpusside-branch issues

ReviewsOpus writes verification scripts; the AI checks its own output

CLAUDE.md2w

Linus's trick

Pedals in a ring, a bench that tests itself.

⚒︎Toolsmith

Thomas Ptacek

Matasano, Latacora, Cryptopals

Claude CodecliCodexOpus 5.5GPT-5.5spare MacBook

ReviewsAgents push PRs, only he merges

3 skillsCLAUDE.md3w

Thomas's trick

swiftui-app template, copied into every new app.

⚒︎Toolsmith

Robert C. Martin

Clean Code author

GrokcliCodexcliGrokno harness

ReviewsDoes not read agent code: Codex reviews Grok's output, he inspects a UML diagram colored by CRAP and mutation scores

5 skills.grok/rules1w

Robert's trick

uml-viewer, colored by CRAP + mutation.

≡Orchestrator

Walden Yan

Co-founder, Cognition (Devin)

DevinwebFableGPT-5.5Devin teams

ReviewsDevin Review first, then asks Devin what to look at first

2mo

Walden's trick

Daily customer-report Devin, escalates top feature asks.

⚒︎Toolsmith

Wes Bos

Syntax podcast co-host

Claude CodecliCodexappOpenCodecliOpus 5.5Codex models

ReviewsReviews after the fact: tests it works, checks for duplicated messes

3 skills2 MCP3w

Wes's trick

vite-plugin-killer-instincts, hands the LLM a kill command.

⚒︎Toolsmith

Wes McKinney

pandas, Apache Arrow

Claude CodecliCodexappFableGPT-5.6 Solown tools

Reviewsroborev reviews every commit; he checks structure

4-5 projects1 hook1w

Wes's trick

roborev, reviews every agent commit.

⚒︎Toolsmith

Xe Iaso

Anubis, xeiaso.net

Claude CodecliCodexOpenCodeOpus 5.5GPT-6.1 Sol

ReviewsA second agent team reviews; /reviewbot on PRs

5 agents11 skills1w

Xe's trick

Assisted-by: footer, model + tool on every commit.

≡Orchestrator

Zach Lloyd

Co-founder and CEO of Warp

Warp FactorieswebWarp agentappGPT 5.6 Solfactory-as-code

ReviewsEngineer reviews the agent PR and ships it; QA video attached

2 MCP2w

Zach's trick

Scorer + self-improvement agents, agents that fix agents.

Questions

Which coding agent do engineers use most?

Among the 94 engineers here: Claude Code (64), Codex (51), Cursor (9), OpenCode (8). 68 of 94 use more than one agent.

How do engineers review AI-written code?

31 of 94 have another model or agent review the code before it lands, 8 still read every line, 21 spot-check the risky parts, and 7 rely on tests alone or ship without a review.

Do engineers run several coding agents at once?

29 of 94 say how many agents they run in parallel, from one at a time to dozens. See each card for their own words.

How often do engineers change their AI coding setup?

Often: 79 of 94 changed their setup (agent, model, harness or how many agents they run at once) in the year to 15 October 2026. Every card shows how old its newest source is.

Where does this data come from?

From each person's own public repos (rules files like CLAUDE.md and AGENTS.md, skills, hooks), their posts, talks and podcasts. Every claim links to its source with a date. Courses and product pitches don't count. The data is open on GitHub.

What we found of 94

Styles our label, not a rating

How to read a card

agentmodel yellowthe one thing to take from them ⚒︎Toolsmithour name for their style appwhere they run it: cli, app, ide, web 8agents at once 2d2monewest source

How it's made

94 stacks, 897 public sources: rules files in their repos, posts, talks and podcasts, first-person only (courses and product pitches don't count). Every field links to where they said it, with the date; fewer than five sourced facts, no card.

Not a ranking, and not proof of what anyone does every day: it's what people say in public, which leans toward people who write about agents. Values marked inferred are our reading, like a model taken from commit co-author lines. Styles and yellow keys are our picks. Last checked 12 Oct 2026.

Who made this

Peter Hraska (@virpo), with a lot of help from Claude Code and Codex. It started as research for Prehistoriq, the code review tool we're building.

Wrong, out of date, or want out? Open a pull request on GitHub or email [email protected]. prehistoriq.com