Your Small PR Rule Won't Survive AI

Two years of strict small-PR culture at Rootly stopped working when AI started writing 80% of their code by count. Humans think in increments. Agents think in features. Stacked PRs of AI output created busywork: the reviewer still needs the full feature to evaluate any single piece, now across five tabs instead of one. What replaced it: an internal AI reviewer that scores risk, standardisation, and confidence; risk labels (low, medium, high) instead of line counts; feature flags as the real review gate. A 12-line PR altering a database index on a 50-million-row table is risk:high. A 3,000-line feature behind a flag, shipping to internal users first, is risk:low. The PR template now requires a Rollback/Revert Plan field as a hard gate.

By Quentin Rousseau (CTO & co-founder, Rootly) →

Everything new from the Google I/O 2026 Developer Keynote

Useful as a single-page index of what shipped on May 19. Gemini 3.5 Flash went GA with a 1M context window. Antigravity 2.0 added a CLI, an SDK, native voice support, and Managed Agents in the Gemini API. Android got a stable CLI, an Android Bench harness, and an Android migration agent. WebMCP landed as an open standard. HTML-in-Canvas shipped. The demo that anchored the keynote: parallel sub-agents built a small operating system inside Antigravity and then ran Doom on it. Gemini CLI is being folded into Antigravity CLI. Read this once and you have the I/O 2026 surface area in your head.

By Google Developers Blog →

Anthropic's Bun Rust rewrite merged at speed of AI

Bun, the JavaScript runtime Anthropic acquired last year, just had its Zig codebase swapped for Rust in a single merge of more than a million lines of code. Five days before the merge, Jarred Sumner posted that "99.8% of bun's pre-existing test suite passes on Linux x64 glibc in the rust rewrite." The merged version passes the test suite on all platforms, fixes some memory leaks, and shrinks binary size by 3 to 8 MB. Same architecture, same data structures, no async Rust. A follow-up PR removing 600,000 lines of Zig source was auto-flagged by GitHub as "AI slop" and closed. The keeper quote from Sumner, on whether the new Rust version will be maintained mainly by Claude Code: "this is already the status quo; we haven't been typing code ourselves for many months now."

By Tim Anderson (The Register) →

Anthropic moves Claude agents inside the customer perimeter

At Code with Claude London on May 19, Anthropic shipped two enterprise-aimed features for Claude Managed Agents: self-hosted sandboxes (public beta) and MCP tunnels (research preview). The split matters. The agent loop (orchestration, context, error recovery) stays on Anthropic. Tool execution moves into your perimeter, either self-hosted or through managed providers Cloudflare, Daytona, Modal, or Vercel. MCP tunnels are the bigger deal for most teams: a lightweight gateway opens a single outbound encrypted connection so Claude can reach private MCP servers without inbound firewall rules or public endpoints. Files and repositories never leave your environment. Works with both Managed Agents and the Messages API.

Via The Decoder →

Forge

An open source reliability layer for self-hosted LLM tool-calling. Built around the compounding-error math problem: 90% per-step accuracy over a 5-step workflow is a 40% failure rate. Forge wraps an 8B local model in structured guardrails and reports moving from 53% to 99% success on the author's agentic benchmarks. Designed for people running always-on agents on their own hardware who do not want to pay frontier API rates. Launched on Show HN on May 20.

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Bun 1.3.14

The last Zig-based release of Bun shipped May 12 with serious feature work, not a goodbye. Bun.Image lands as a built-in image processing API (the team claims it outperforms sharp). Warm installs are 7x faster via the isolated linker's global virtual store. Experimental HTTP/2 and HTTP/3 clients for fetch() ship alongside HTTP/3 (QUIC) support in Bun.serve(). Plus a rewritten fs.watch() on Linux and macOS, Bun.Terminal on Windows via ConPTY, FreeBSD and Android builds, and a shared SSL_CTX cache. Pin to 1.3.14 if you want the proven Zig version while the Rust rewrite settles in canary.

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Ardent

Git for your data infrastructure. Ardent replicates your production Postgres into a read replica, then lets you create isolated branches from that replica in under 6 seconds, each one a full Postgres database with your real data. Branches auto-suspend after 5 minutes of inactivity and spin back up instantly on reconnect, and you only pay for changes made on the branch. The CLI mirrors git: branch create, switch, info, delete. Works with Supabase, AWS RDS, PlanetScale, or self-hosted Postgres. Useful for migration testing, agent database work, and replacing shared staging databases with one-off branches.

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