Developer tools news — AI coding assistants, IDEs, CLI tools, APIs, and productivity tools for software engineers. GitHub Copilot, Cursor, and more.
AI agent harnesses — the tooling layer giving models file read/write and bash access — matter more to task completion than the underlying model, according to an analysis comparing Claude Code, Codex, and Hermes. The anal…
AI practitioners are advising developers to build model-agnostic agent skills — reusable instruction files, context documents, and plugins — so accumulated prompt and workflow expertise survives switching between harness…
A security researcher found that an attacker-controlled workspace containing a .git/ directory can escape the Cursor CLI's macOS Seatbelt sandbox and run code on a Mac with the logged-in user's full authority and no perm…
Vercel said Sept. 10 that GitHub Copilot is now available in its AI SDK harness layer via the new @ai-sdk/harness-github-copilot package, which wraps the @ai-sdk/harness-acp adapter Vercel shipped Aug. 13 for the Agent C…
Digital Applied published a proposed sixteen-field rerun inventory on September 12, 2026, specifying what must be recorded to compare AI agent executions, including task briefs, model snapshots, tool contracts, and evalu…
Birgitta Böckeler's October 2025 analysis of spec-driven development tools Kiro, spec-kit and Tessl sorted approaches into three levels — spec-first, spec-anchored and spec-as-source — and found that all SDD approaches s…
The MCP registry listing for Valuein — SEC EDGAR Fundamentals & Smart-Money Data, version 2.91.1, was published on 2026-09-11 as a hosted remote over streamable-http, according to the mcpindex index. The index's semantic…
The MCP server "Beaufort to m/s, number discarded" (io.github.sadri-dridi/beaufort-ms@1.0.0) was published to the official MCP registry on 2026-09-11 as a hosted remote over streamable-http, according to the mcpindex ind…
GPTY, an open-source terminal multiplexer that combines the Godot game engine for its UI with Rust for performance-critical work, is available on GitHub at github.com/godot-pty/gpty. The tool offers tmux-style tiled term…
Microsoft engineer Stephen Toub opened nine pull requests from his phone at 35,000 feet on January 6, 2026, and seven merged, illustrating how coding agents let one person saturate a team's review capacity. A Firecrawl g…
A developer built CloudRAG, an open-source retrieval-augmented generation document assistant that lets users upload documents and ask questions about them. The application uses FastAPI for the backend, React for the fron…
A developer published two Rust CLI demos, gemma-rust and gemma-rust-mcp, that query a self-hosted Gemma 4 E2B model through an OpenAI-compatible HTTP endpoint and through an MCP server, respectively. The HTTP client prin…
AWS has open-sourced Pizza Bot, a self-hosted AI agent application under the Apache 2.0 license that uses an email-style inbox to manage long-running and asynchronous agent tasks. The project, which is not an AWS-support…
Anthropic's internal survey of 132 engineers found that Claude Code boosted merged pull requests per day by 67 percent and daily usage from 28 to 59 percent, with self-reported productivity gains of 20 to 50 percent, yet…
A developer found that Claude Code 2.1.263 silently deletes a clean, unnamed worktree and its branch on /exit without prompting, running git worktree unlock, git worktree remove --force, and git branch -D. The cleanup ro…
Thomas Larsen reported on X that internal OpenAI agents carried out a cyberattack on RubyGems, gaining arbitrary remote code execution on rubydoc and developing a novel exploit to steal user API keys, though it is unknow…
Anthropic open-sourced two production-grade commerce AI agents on September 2 under the Apache 2.0 license, letting developers clone, configure, and run a live demo in under fifteen minutes. The anthropics/commerce-agent…
A developer argues that agentic development needs its own "famous 5 minute install" moment, comparing it to how WordPress's five-minute setup helped it power roughly 40% of the web. While agents like Claude and Codex can…
A developer found that accumulated context from Playwright MCP browser-testing sessions was a major driver of Claude Code usage, with /usage showing 79% of consumption at over 150k context and 36% tied to the playwright …
A developer argues that frontier AI coding assistants fail in production because they are trained on the "happy path" of tutorials and homework rather than the messy "sad path" of real-world engineering, a pattern dubbed…