Developer tools news — AI coding assistants, IDEs, CLI tools, APIs, and productivity tools for software engineers. GitHub Copilot, Cursor, and more.
A developer maintaining RTBlint, an open-source OpenRTB and ARTF linter, has detailed a common publisher-stage ARTF misconfiguration in which an envelope labeled LIFECYCLE_PUBLISHER_BID_REQUEST still carries a bid_respon…
A developer built quota-catchup.py, a companion tool to the claude-quota-guard.py quota circuit breaker that decides which of 15 launchd jobs to re-run after a quota-exhaustion circuit closes. The script identifies re-ru…
Developer MrDesjardins extended Jev Realtime Code Check, an open-source tool with 480 rules, so the same rule set runs in three places: inside LLM coding agents such as Codex and Claude, in the VS Code editor on save or …
A software company founder who mandated AI-assisted coding across his development team in January 2026 reported that one engineer can now produce several times as much output as before, but said code review has become "a…
Harness Arena, a platform sponsored by On Demand, launched a blind-comparison tool that runs multiple AI coding agent harnesses — including Codex, On Demand, Hermes, OpenCode, OpenClaw, and Claude Code — on the same task…
Harness Arena, an open-source platform for comparing AI agent harnesses, now lets signed-in users upload their own task datasets, select harnesses such as Codex, Claude Code, OpenCode and Hermes, choose a model, and subm…
A comparison of four formal-verification tools — Bend, Verus, Dafny and Lean — argues that proofs, not tests, are what make agent-written code trustworthy, citing Amazon Science's August 31, 2026 post on the Rust verifie…
Effect, the TypeScript library for building synchronous and asynchronous programs, published its weekly community update, This Week in Effect - 136, detailing continued release-candidate hardening plus new capabilities i…
OpenAI's Codex CLI is open source under Apache-2.0 and its Free plan is listed at $0 a month, but OpenAI publishes no usage allowance for that tier — its published estimates begin with Plus at $20 a month, according to O…
Anthropic does not include Claude Code in its free plan, listing it as "No" on Free and including it from Pro at $20 a month or $17 a month billed annually, and in Max from $100 a month, according to Anthropic's pricing …
GitHub Next published a post titled "Sparkle Pills" describing a templating convention in which instructions wrapped in `*(...)` mark slots that a large language model fills in while surrounding verbatim text is preserve…
Vercel added GLM 5.3 FlashX, Z.ai's multimodal coding model, to its AI Gateway, offering inference at roughly 200 tokens per second. The high-speed serving option is aimed at coding agents, tool loops, and interactive ap…
A blog post warns that developers should treat installing anything on someone else's computer as a deliberate decision, citing git pre-commit hooks, `npx`/`uvx` commands, and LLM context files such as `AGENTS.md`, `CLAUD…
Vincent 0.9.0 was released 14 days and 428 commits after 0.8.0, adding event triggers, pull request actions, and a firmer base for a 1.0 release, according to the project's changelog. The release lists 23 additions, 6 ch…
CodeRabbit introduced CodeRabbit Triage, a pull-request triage system that separates workflow classification from comparative ranking so reviewers see what each PR needs next and who is responsible for it. The classifier…
Ziva runs as an AI copilot dock inside the Godot editor in Godot 4.2 and later on Windows, macOS and Linux, since Godot itself ships no built-in AI assistant. Ziva's editor tools include get_scene_tree, get_godot_errors,…
TypeSafe's Jev returns typed probabilistic decisions — Noul (P(yes) from 0 to 1), Choice (selected option plus probability distribution), and Score (weighted score plus distribution) — rather than free-form text, and dev…
Arcjet launched agent runtime security on September 17, a product from founder David Mytton that observes, enforces and audits AI agent actions before they execute, available now with a free 15-day trial. The product ing…
TypeSafe AI's first System One model, Jev, is the subject of a new open-source demo called Grug that holds conversations by repeatedly selecting the next word from a compact 979-word vocabulary via the API's `choice` pri…
Developer alxcrt published is-odd-jev, an npm package that determines whether a number is odd using the TypeSafe "jev-latest" model and returns a calibrated probability rather than a boolean, e.g. { odd: true, p: 0.999, …