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Bun's Zig-to-Rust Port Took 11 Days and 64 Parallel Agents Developer Tools

Bun's Zig-to-Rust Port Took 11 Days and 64 Parallel Agents

The largest agent-authored rewrite yet shipped in production — and the regressions it let through are the interesting part

Seung Jung 2026.09.21
Survey of 305 Developers Finds 71% Shipped AI Code They Didn't Understand Developer Tools

Survey of 305 Developers Finds 71% Shipped AI Code They Didn't Understand

Coddy's AI Coding Addiction Report measures the behavioral cost of agentic coding, and finds it varies sharply by which tool you use

Seung Jung 2026.09.20
A Model That Writes No Text Reached 13% of Vercel's Paid Teams in a Day Developer Tools

A Model That Writes No Text Reached 13% of Vercel's Paid Teams in a Day

Jev's first-day adoption is the fastest AI Gateway has recorded — and it measures trial breadth, not production volume

Seung Jung 2026.09.19
DoorDash's Agents Clear a Stale Feature Flag for $4.79 in 14 Minutes Developer Tools

DoorDash's Agents Clear a Stale Feature Flag for $4.79 in 14 Minutes

A two-phase system pairs a Sonnet planner with Opus editors in isolated git worktrees, and the quality gates — not the models — decide what ships

Seung Jung 2026.09.19
ZCode Packaged 42,411 Files Per Snapshot. Only Z.ai Could Decrypt Them. Developer Tools

ZCode Packaged 42,411 Files Per Snapshot. Only Z.ai Could Decrypt Them.

A reverse-engineering report found the GLM maker's coding app shipping full Git histories to Alibaba Cloud, with the unwrapping key held server-side

Seung Jung 2026.09.19
Vercel Disabled AVIF Platform-Wide. The Bug Was Three Layers Below Next.js Developer Tools

Vercel Disabled AVIF Platform-Wide. The Bug Was Three Layers Below Next.js

An RCE reported against Next.js image optimization sat in a decoder Vercel does not maintain, leaving one lever it could pull in hours

Seung Jung 2026.09.19
832,378 Lines of Rust in 14.5 Weeks: Inside an Agent-Run Rewrite Developer Tools

832,378 Lines of Rust in 14.5 Weeks: Inside an Agent-Run Rewrite

The port cut memory use from 1,383MB to 126MB and cost roughly $120,000 in tokens — and still shipped dozens of regressions the compiler happily approved

Seung Jung 2026.09.19
Researchers Reached OpenAI's Internal Repo Through a Forum Image Bug Developer Tools

Researchers Reached OpenAI's Internal Repo Through a Forum Image Bug

Hacktron AI chained a libheif heap overflow with an OpenAI SSO misconfiguration, and says Claude Opus 5 closed the gap its predecessor could not

Seung Jung 2026.09.18
Plugin4Shell: A Zero-Click RCE Hits Claude Code, Codex, Copilot and Gemini CLI Developer Tools

Plugin4Shell: A Zero-Click RCE Hits Claude Code, Codex, Copilot and Gemini CLI

Security firm Air says every major coding agent trusts a pinned plugin version it never verifies

Seung Jung 2026.09.18
Claude Code Projects Returns as a Coordinator That Runs Parallel Cloud Threads Developer Tools

Claude Code Projects Returns as a Coordinator That Runs Parallel Cloud Threads

Anthropic's beta hands one agent the job of splitting a goal across branch-isolated sessions — and warns it will eat a plan faster

Seung Jung 2026.09.18
Perplexity Let Hundreds of Agents Write Its Database. Deploy Rights Stayed Human. Developer Tools

Perplexity Let Hundreds of Agents Write Its Database. Deploy Rights Stayed Human.

CobbleDB cut median batch-read latency from 31.4 ms to 5.6 ms and is projected to save up to $100 million a year — built in two months by two engineers directing a swarm of coding agents

Seung Jung 2026.09.17
Microsoft's Record 966-Flaw Patch Month Moves the Bottleneck to Defenders Developer Tools

Microsoft's Record 966-Flaw Patch Month Moves the Bottleneck to Defenders

AI-assisted discovery is filling the pipeline faster than IT teams can evaluate, test and deploy what comes out of it

Seung Jung 2026.09.16
Meta Hands WhatsApp Business Setup to Claude and Codex via MCP Developer Tools

Meta Hands WhatsApp Business Setup to Claude and Codex via MCP

An 18-tool beta server lets agents onboard phone numbers, build templates and wire webhooks without the Meta dashboard

Seung Jung 2026.09.16
OpenRouter Walls Off US AI Traffic as Chinese Models Dominate Developer Tools

OpenRouter Walls Off US AI Traffic as Chinese Models Dominate

Chinese open-weight models supply most of the marketplace's rising open-weight token volume in the US.

Seung Jung 2026.09.15
Companies Are Now Licensing Their Private Source Code as AI Evaluation Data Developer Tools

Companies Are Now Licensing Their Private Source Code as AI Evaluation Data

Specific Labs paid a consumer product and a fintech platform for repository access, creating an eval asset that cannot be scraped

Seung Jung 2026.09.15
Meta Open-Sources Astryx, a React Design System Agents Can Query Developer Tools

Meta Open-Sources Astryx, a React Design System Agents Can Query

Eight years inside Meta's monorepo, 150+ components, and an MCP endpoint built for coding agents

Seung Jung 2026.09.14
LLM Bug-Fixers Broke Working Code Ten Times More Often Than They Fixed Broken Code Developer Tools

LLM Bug-Fixers Broke Working Code Ten Times More Often Than They Fixed Broken Code

A new arXiv report measures blind iterative repair — and finds a steering vector that switches the damage off, along with every real fix

Seung Jung 2026.09.13
n8n's New Assistant Builds Your Workflow, Then Stays to Debug It Developer Tools

n8n's New Assistant Builds Your Workflow, Then Stays to Debug It

The generation step is table stakes — n8n is betting on what happens after the first run fails

Seung Jung 2026.09.13
GitHub's HydraFusion Stops Picking a Model. It Builds a Workflow Instead. Developer Tools

GitHub's HydraFusion Stops Picking a Model. It Builds a Workflow Instead.

A Copilot research preview matched Claude Opus 5 on three agentic coding suites while cutting estimated cost by up to 67%

Seung Jung 2026.09.13
Shopify Buys Tailwind Labs as AI Coding Tools Erode the Framework's Business Developer Tools

Shopify Buys Tailwind Labs as AI Coding Tools Erode the Framework's Business

Tailwind CSS stays MIT-licensed, but the template business that funded it is closing

Seung Jung 2026.09.12
AI Agents Flooded RubyGems With 2,000 Packages. Sign-Ups Closed for Four Days Developer Tools

AI Agents Flooded RubyGems With 2,000 Packages. Sign-Ups Closed for Four Days

A forensic report reconstructs the May GemStuffer campaign and traces it to OpenAI, which never told the registry

Seung Jung 2026.09.12
OpenAI Opens Its Full-Duplex Voice Model to Developers at 5 Cents a Minute Developer Tools

OpenAI Opens Its Full-Duplex Voice Model to Developers at 5 Cents a Minute

GPT-Live-1 listens while it speaks, scores 86.2% on a voice-agent benchmark, and is already answering restaurant phones for Yelp

Seung Jung 2026.09.11
Cognition's SWE-2 Gets Within a Point of the Frontier for 64% Less Developer Tools

Cognition's SWE-2 Gets Within a Point of the Frontier for 64% Less

The coding model is post-trained from Moonshot AI's open-weight Kimi K3, and trains every reasoning-effort level in a single RL run

Seung Jung 2026.09.11
Researchers Found 227 Install Commands Pointing at Code Nobody Owns Developer Tools

Researchers Found 227 Install Commands Pointing at Code Nobody Owns

A scan of 6,214 corporate domains found AI documentation files quietly steering coding agents toward unregistered packages

Seung Jung 2026.08.28
Bun's Zig-to-Rust Port Took 11 Days and 64 Parallel Agents
Developer Tools

Bun's Zig-to-Rust Port Took 11 Days and 64 Parallel Agents

The largest agent-authored rewrite yet shipped in production — and the regressions it let through are the interesting part

Seung Jung 2026.09.21
Survey of 305 Developers Finds 71% Shipped AI Code They Didn't Understand
Developer Tools

Survey of 305 Developers Finds 71% Shipped AI Code They Didn't Understand

Coddy's AI Coding Addiction Report measures the behavioral cost of agentic coding, and finds it varies sharply by which tool you use

Seung Jung 2026.09.20
A Model That Writes No Text Reached 13% of Vercel's Paid Teams in a Day
Developer Tools

A Model That Writes No Text Reached 13% of Vercel's Paid Teams in a Day

Jev's first-day adoption is the fastest AI Gateway has recorded — and it measures trial breadth, not production volume

Seung Jung 2026.09.19
DoorDash's Agents Clear a Stale Feature Flag for $4.79 in 14 Minutes
Developer Tools

DoorDash's Agents Clear a Stale Feature Flag for $4.79 in 14 Minutes

A two-phase system pairs a Sonnet planner with Opus editors in isolated git worktrees, and the quality gates — not the models — decide what ships

Seung Jung 2026.09.19
ZCode Packaged 42,411 Files Per Snapshot. Only Z.ai Could Decrypt Them.
Developer Tools

ZCode Packaged 42,411 Files Per Snapshot. Only Z.ai Could Decrypt Them.

A reverse-engineering report found the GLM maker's coding app shipping full Git histories to Alibaba Cloud, with the unwrapping key held server-side

Seung Jung 2026.09.19
Vercel Disabled AVIF Platform-Wide. The Bug Was Three Layers Below Next.js
Developer Tools

Vercel Disabled AVIF Platform-Wide. The Bug Was Three Layers Below Next.js

An RCE reported against Next.js image optimization sat in a decoder Vercel does not maintain, leaving one lever it could pull in hours

Seung Jung 2026.09.19
832,378 Lines of Rust in 14.5 Weeks: Inside an Agent-Run Rewrite
Developer Tools

832,378 Lines of Rust in 14.5 Weeks: Inside an Agent-Run Rewrite

The port cut memory use from 1,383MB to 126MB and cost roughly $120,000 in tokens — and still shipped dozens of regressions the compiler happily approved

Seung Jung 2026.09.19
Researchers Reached OpenAI's Internal Repo Through a Forum Image Bug
Developer Tools

Researchers Reached OpenAI's Internal Repo Through a Forum Image Bug

Hacktron AI chained a libheif heap overflow with an OpenAI SSO misconfiguration, and says Claude Opus 5 closed the gap its predecessor could not

Seung Jung 2026.09.18
Plugin4Shell: A Zero-Click RCE Hits Claude Code, Codex, Copilot and Gemini CLI
Developer Tools

Plugin4Shell: A Zero-Click RCE Hits Claude Code, Codex, Copilot and Gemini CLI

Security firm Air says every major coding agent trusts a pinned plugin version it never verifies

Seung Jung 2026.09.18
Claude Code Projects Returns as a Coordinator That Runs Parallel Cloud Threads
Developer Tools

Claude Code Projects Returns as a Coordinator That Runs Parallel Cloud Threads

Anthropic's beta hands one agent the job of splitting a goal across branch-isolated sessions — and warns it will eat a plan faster

Seung Jung 2026.09.18
Perplexity Let Hundreds of Agents Write Its Database. Deploy Rights Stayed Human.
Developer Tools

Perplexity Let Hundreds of Agents Write Its Database. Deploy Rights Stayed Human.

CobbleDB cut median batch-read latency from 31.4 ms to 5.6 ms and is projected to save up to $100 million a year — built in two months by two engineers directing a swarm of coding agents

Seung Jung 2026.09.17
Microsoft's Record 966-Flaw Patch Month Moves the Bottleneck to Defenders
Developer Tools

Microsoft's Record 966-Flaw Patch Month Moves the Bottleneck to Defenders

AI-assisted discovery is filling the pipeline faster than IT teams can evaluate, test and deploy what comes out of it

Seung Jung 2026.09.16
Meta Hands WhatsApp Business Setup to Claude and Codex via MCP
Developer Tools

Meta Hands WhatsApp Business Setup to Claude and Codex via MCP

An 18-tool beta server lets agents onboard phone numbers, build templates and wire webhooks without the Meta dashboard

Seung Jung 2026.09.16
OpenRouter Walls Off US AI Traffic as Chinese Models Dominate
Developer Tools

OpenRouter Walls Off US AI Traffic as Chinese Models Dominate

Chinese open-weight models supply most of the marketplace's rising open-weight token volume in the US.

Seung Jung 2026.09.15
Companies Are Now Licensing Their Private Source Code as AI Evaluation Data
Developer Tools

Companies Are Now Licensing Their Private Source Code as AI Evaluation Data

Specific Labs paid a consumer product and a fintech platform for repository access, creating an eval asset that cannot be scraped

Seung Jung 2026.09.15
Meta Open-Sources Astryx, a React Design System Agents Can Query
Developer Tools

Meta Open-Sources Astryx, a React Design System Agents Can Query

Eight years inside Meta's monorepo, 150+ components, and an MCP endpoint built for coding agents

Seung Jung 2026.09.14
LLM Bug-Fixers Broke Working Code Ten Times More Often Than They Fixed Broken Code
Developer Tools

LLM Bug-Fixers Broke Working Code Ten Times More Often Than They Fixed Broken Code

A new arXiv report measures blind iterative repair — and finds a steering vector that switches the damage off, along with every real fix

Seung Jung 2026.09.13
n8n's New Assistant Builds Your Workflow, Then Stays to Debug It
Developer Tools

n8n's New Assistant Builds Your Workflow, Then Stays to Debug It

The generation step is table stakes — n8n is betting on what happens after the first run fails

Seung Jung 2026.09.13
GitHub's HydraFusion Stops Picking a Model. It Builds a Workflow Instead.
Developer Tools

GitHub's HydraFusion Stops Picking a Model. It Builds a Workflow Instead.

A Copilot research preview matched Claude Opus 5 on three agentic coding suites while cutting estimated cost by up to 67%

Seung Jung 2026.09.13
Shopify Buys Tailwind Labs as AI Coding Tools Erode the Framework's Business
Developer Tools

Shopify Buys Tailwind Labs as AI Coding Tools Erode the Framework's Business

Tailwind CSS stays MIT-licensed, but the template business that funded it is closing

Seung Jung 2026.09.12
AI Agents Flooded RubyGems With 2,000 Packages. Sign-Ups Closed for Four Days
Developer Tools

AI Agents Flooded RubyGems With 2,000 Packages. Sign-Ups Closed for Four Days

A forensic report reconstructs the May GemStuffer campaign and traces it to OpenAI, which never told the registry

Seung Jung 2026.09.12
OpenAI Opens Its Full-Duplex Voice Model to Developers at 5 Cents a Minute
Developer Tools

OpenAI Opens Its Full-Duplex Voice Model to Developers at 5 Cents a Minute

GPT-Live-1 listens while it speaks, scores 86.2% on a voice-agent benchmark, and is already answering restaurant phones for Yelp

Seung Jung 2026.09.11
Cognition's SWE-2 Gets Within a Point of the Frontier for 64% Less
Developer Tools

Cognition's SWE-2 Gets Within a Point of the Frontier for 64% Less

The coding model is post-trained from Moonshot AI's open-weight Kimi K3, and trains every reasoning-effort level in a single RL run

Seung Jung 2026.09.11
Researchers Found 227 Install Commands Pointing at Code Nobody Owns
Developer Tools

Researchers Found 227 Install Commands Pointing at Code Nobody Owns

A scan of 6,214 corporate domains found AI documentation files quietly steering coding agents toward unregistered packages

Seung Jung 2026.08.28

Bun's Zig-to-Rust Port Took 11 Days and 64 Parallel Agents

Developer Tools | Seung Jung | 2026.09.21

Survey of 305 Developers Finds 71% Shipped AI Code They Didn't Understand

Developer Tools | Seung Jung | 2026.09.20

A Model That Writes No Text Reached 13% of Vercel's Paid Teams in a Day

Developer Tools | Seung Jung | 2026.09.19

DoorDash's Agents Clear a Stale Feature Flag for $4.79 in 14 Minutes

Developer Tools | Seung Jung | 2026.09.19

ZCode Packaged 42,411 Files Per Snapshot. Only Z.ai Could Decrypt Them.

Developer Tools | Seung Jung | 2026.09.19

Vercel Disabled AVIF Platform-Wide. The Bug Was Three Layers Below Next.js

Developer Tools | Seung Jung | 2026.09.19

832,378 Lines of Rust in 14.5 Weeks: Inside an Agent-Run Rewrite

Developer Tools | Seung Jung | 2026.09.19

Researchers Reached OpenAI's Internal Repo Through a Forum Image Bug

Developer Tools | Seung Jung | 2026.09.18

Plugin4Shell: A Zero-Click RCE Hits Claude Code, Codex, Copilot and Gemini CLI

Developer Tools | Seung Jung | 2026.09.18

Claude Code Projects Returns as a Coordinator That Runs Parallel Cloud Threads

Developer Tools | Seung Jung | 2026.09.18

Perplexity Let Hundreds of Agents Write Its Database. Deploy Rights Stayed Human.

Developer Tools | Seung Jung | 2026.09.17

Microsoft's Record 966-Flaw Patch Month Moves the Bottleneck to Defenders

Developer Tools | Seung Jung | 2026.09.16

Meta Hands WhatsApp Business Setup to Claude and Codex via MCP

Developer Tools | Seung Jung | 2026.09.16

OpenRouter Walls Off US AI Traffic as Chinese Models Dominate

Developer Tools | Seung Jung | 2026.09.15

Companies Are Now Licensing Their Private Source Code as AI Evaluation Data

Developer Tools | Seung Jung | 2026.09.15

Meta Open-Sources Astryx, a React Design System Agents Can Query

Developer Tools | Seung Jung | 2026.09.14

LLM Bug-Fixers Broke Working Code Ten Times More Often Than They Fixed Broken Code

Developer Tools | Seung Jung | 2026.09.13

n8n's New Assistant Builds Your Workflow, Then Stays to Debug It

Developer Tools | Seung Jung | 2026.09.13

GitHub's HydraFusion Stops Picking a Model. It Builds a Workflow Instead.

Developer Tools | Seung Jung | 2026.09.13

Shopify Buys Tailwind Labs as AI Coding Tools Erode the Framework's Business

Developer Tools | Seung Jung | 2026.09.12

AI Agents Flooded RubyGems With 2,000 Packages. Sign-Ups Closed for Four Days

Developer Tools | Seung Jung | 2026.09.12

OpenAI Opens Its Full-Duplex Voice Model to Developers at 5 Cents a Minute

Developer Tools | Seung Jung | 2026.09.11

Cognition's SWE-2 Gets Within a Point of the Frontier for 64% Less

Developer Tools | Seung Jung | 2026.09.11

Researchers Found 227 Install Commands Pointing at Code Nobody Owns

Developer Tools | Seung Jung | 2026.08.28
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