# agentic-coding

Andrew Ng's AI engineering skills map lists four abilities, and the fourth deserves the closest read: he argues coding agents are getting rapidly better at delivering to spec, so engineers' work is shifting toward deciding what goes into the spec. gu-log pushes further: once implementation gets cheap, what does a wrong spec cost, which decisions can't be undone, and does your company's process even leave engineers room to do this?

3-minute lightning talk slides. AI has read almost everything — but some concepts aren't in training data yet. What you know that AI doesn't = your leverage.

The Claude Code source leak had everyone excited about KAIROS and model codenames. But the same codebase had a 3,167-line function, zero tests, silent model downgrades, and regex emotion detection. These aren't just Anthropic's mistakes — they're AI-generated code's default failure modes.

gu-log had 336 AI-translated posts. We thought they were 'fine' — until we built a multi-agent scoring system and discovered 74% needed rewriting. This is the story of how we designed the eval, ran it overnight, and what we learned.

Simon Willison finally defines Agentic Engineering after 11 hands-on chapters: using coding agents to help build software. The interesting part is why he needed the patterns first before the simple definition felt earned.

Simon Willison's Agentic Engineering Patterns, Chapter 3: AI should help us ship better code, not worse. Technical debt cleanup costs near zero now, architecture decisions can be validated with prototypes instead of guesses, and quality compounds over time.

Simon Willison's First Run the Tests pattern is four words with three effects: the agent learns the test command, gauges codebase size, and shifts into a test-maintenance mindset. Tiny instruction, large behavioral nudge.

Simon Willison shared his agentic engineering playbook at the Pragmatic Summit — five tokens to start TDD, Showboat for manual verification, reverse-engineering six frameworks into a standard, and why bad code is a choice you make.

Simon Willison's new Agentic Engineering anti-pattern hits hard: do not submit AI-generated code you have not personally verified. That is not saving time; it is stealing reviewer time. The post pairs principles with a terraform destroy horror story.

Cursor launches always-on background agents (Automations) — self-healing CI, auto-approving PRs, security review, and team memory. This marks the paradigm shift from Coding Assistant to Self-Driving Codebase.

Simon Willison introduces Agentic Manual Testing: let AI agents manually operate code and UI like humans do, catching bugs that automated tests miss. With Playwright, Rodney, and Showboat, the 'tests pass but it's broken' nightmare becomes a thing of the past.

Karpathy spent a weekend running 4 Claude + 4 Codex agents as an ML research team on GPUs. The result: agents are S-tier at implementation but F-tier at experiment design. His key insight — 'You are now programming an organization' — might define agentic engineering in 2026.

Cursor CEO drops three data points marking a tectonic shift: agent usage grew 15x, Tab-to-Agent ratio flipped to 1:2, and 35% of Cursor's PRs come from autonomous cloud agents. We're not coding anymore — we're building the factory (╯°□°)╯

Cloudflare engineer Steve Faulkner used Claude to rebuild 94% of the Next.js API in a week for $1,100. The secret was Next.js's public test suite as spec. When tldraw moved 327 tests private afterward, open source's rules changed.

Andrew Ng says he has not only stopped writing code, he has long stopped reading generated code. He now directs agents at a higher abstraction layer and sees X Engineers emerging inside business functions. A radical programming forecast from AI's most influential educator.

Anthropic acquired Vercept, bringing in R-CNN inventor Ross Girshick and cofounders Kiana Ehsani and Luca Weihs to push Claude's Computer Use toward human-level computer operation. OSWorld gains and UiPath's drop show RPA investors noticed.

Anthropic's Claude Cowork enterprise update adds industry plugins, private marketplaces, new connectors, and Excel + PowerPoint workflows. The market signal changed too: instead of crashing software stocks, partnerships lifted Salesforce, Thomson Reuters, and FactSet.

Fintool founder Nicolas Bustamante runs a six-person company through Agent + API integrations across Brex, QuickBooks, HubSpot, and Stripe. His B2A warning: SaaS without good APIs will be bypassed by agents through WebMCP or browsers.

Claude Code creator Boris Cherny declares coding 'practically solved,' predicts the 'software engineer' title will fade in 2026. He shares 3 team principles: let Claude do it, underfund to force AI adoption, and go faster.

Claude Code CLI now includes first-class Git worktree support via `--worktree`. Teams can run multiple isolated AI coding sessions in parallel without file collisions, making multi-agent workflows more reliable and easier to standardize for real engineering teams.