Developer Tools Articles
55 articles across AI Catchup's news, guides, tutorials, and comparisons.
All Developer Tools articles
Claude Managed Agents Adds a Terminal Session Viewer and Auto Permission Mode
Claude Managed Agents now includes a terminal workflow for attaching to live sessions and a local web session viewer. Anthropic also added an auto permission mode that evaluates each agent or MCP tool call against the intent in user.message and runs, denies, or pauses for approval.
OpenAI Welcomes the Git AI Team Behind an Open-Source Agent Attribution Tool
OpenAI says Aidan Cunniffe and Sasha Varlamov from the Git AI team have joined OpenAI. Their open-source Git extension tracks AI-generated code at line level, linking it to the agent, model, and prompts that produced it, with commands for attribution stats and AI-aware blame.
Claude Code Adds Plugin Evals for Regression Testing and No-Plugin Baselines
Claude Code now includes `claude plugin eval`, a testing workflow for plugin and skill authors. The command can create cases and graders, run a plugin in isolated non-interactive sessions, compare results with a no-plugin baseline, generate an HTML report, and support CI gates for plugin changes. Evals require Claude Code v2.1.269 or later and consume model usage.
Cursor Projects Give a Coordinator Agent a Long-Lived Body of Work
Cursor's Projects beta moves beyond one chat at a time: a coordinator agent keeps context over months, delegates implementation and testing to subagents, shares research and artifacts across cloud and local machines, and can watch PRs, Slack, or a schedule for recurring work.
OpenAI Opens Its Codex-Powered Agents API to All Developers in Public Beta
OpenAI's Agents API is now in public beta for all developers. The managed service uses the Codex harness to run long-lived cloud agents, coordinate parallel subagents, compact context across long sessions, and work in OpenAI-hosted, VPC, or partner-provided sandboxes.
Claude Code Desktop Adds Pop-Out Panes for Diff and Terminal Work
ClaudeDevs says Claude Code Desktop can now pop out any pane into its own window. You can move a diff or terminal to another screen while Claude keeps working, dock it back later, and run sessions side by side or stacked.
OpenAI Shares a Defense Factory Playbook for Agentic Cyber Defense
OpenAI is sharing a Defense Factory playbook that connects security tools, skills, reproducible environments, and agents into a continuous loop for discovering, validating, assigning, remediating, and independently verifying vulnerabilities.
Claude's ant CLI Can Now Manage Agent Resources as Code
Anthropic added `ant apply` to the Claude CLI, letting teams declare Managed Agent environments, agents, skills, memory stores, and deployments in a repository and reconcile them with the Claude API.
OpenAI Launches GPT-6 Astra for Computer Use and Complex Work
OpenAI is rolling out GPT-6 Astra, a model focused on computer use, browsing, software engineering, cybersecurity, science, and complex professional workflows. Access starts with a limited set of organizations before expanding to ChatGPT plans and developer platforms.
Anthropic Open-Sources a Commerce Agents Blueprint for Claude
Anthropic has launched an open-source blueprint for building commerce agents with Claude. It includes shopping and merchant agent implementations, demos across retail, travel, telecom, and ticketing, guardrails, and a Claude Code plugin.
Cursor Cloud Agents Can Now Run on Self-Hosted Machines
Cursor Cloud Agents can now execute on machines that a team manages, including dynamically scaling pools inside its network. The execution environment moves to the team's infrastructure while Cursor continues to handle the agent loop, inference, and planning.
Claude Code Desktop Can Now Resume Sessions Started in the Terminal
Claude Code can now move a terminal-started session into the Claude Code desktop app. Anthropic says users can type /resume, choose a CLI session, and continue with the full conversation and context intact.
Cursor Cloud Agents Can Now Start Apps From Scratch
Cursor Cloud Agents can now begin a web app without an existing repository. The workflow can create an Origin repository, preview the result, and publish it to Vercel without requiring a local setup first.
ChatGPT Workspaces Can Sync GitHub Plugin Marketplaces Daily
ChatGPT workspace admins and owners can now import plugin marketplaces from public or private GitHub repositories and keep them synchronized automatically. The feature gives teams a central way to distribute Codex and Claude-compatible plugins while keeping installation policies and app permissions under workspace control.
Claude Code Weekly Limits Are Now 25% Higher Permanently: Anthropic Confirms the September 14 Change
As of September 14, 2026, Anthropic documents the permanent increase on its own support article: weekly limits in Claude Code are 25% higher than they were before the May-September promotion for Pro, Max, Team, and seat-based Enterprise plans. The 50% promotion ended September 13 at 11:59 PM PT. Five-hour limits, prices, and other Claude products are unchanged.
OpenAI Plans to End Direct Cursor Model Access on November 12
OpenAI plans to end Cursor's direct access to OpenAI models, with November 12, 2026 proposed and not yet confirmed. You are affected only if you pick OpenAI models inside Cursor, which Cursor says is about 5% of its traffic. Local Chat and Agent can keep OpenAI through your own API key or the Codex extension; Tab, Auto, Cloud Agents and automations cannot.
Claude Makes Enterprise-Managed Auth for MCP Connectors Generally Available
Anthropic says enterprise-managed auth for MCP connectors is now generally available. Claude Team and Enterprise admins can centralize authorization through their identity provider, while users receive connector access automatically without individual OAuth consent flows.
OpenAI Brings GPT-5.6 Model Family to Kiro for Spec-Driven Coding
OpenAI says the GPT-5.6 model family, including Sol, Terra, and Luna, is now available in Kiro. The OpenAI-AWS update targets structured, long-running software work and reports roughly an 82% cost reduction per successful Terminal-Bench 2.1 task for GPT-5.6 Terra in Kiro's spec-driven environment.
Claude Code Remote Control Can Start Sessions From Your Phone
As of August 2026, a machine running claude remote-control appears as a device card at the top of the Code tab in the Claude app: tap it, pick a directory, and a session starts on that machine. Anthropic's Week 34 digest also took Remote Control out of research preview. Code and files stay local.
OpenAI Adds API-Key Spend Dashboards and Hard Limits
OpenAI's API platform now lets teams group Usage and Costs data by API key and set monthly organization or project spend limits. The dashboard feature helps identify which apps and workloads drive spend, while a hard limit can stop affected API traffic with a documented 429 error after the cap is reached.
Claude Security Brings Mythos 5 Scans to Enterprise Customers
Anthropic says Claude Security scans now run on Claude Mythos 5 for Claude Enterprise customers. The public-beta product scans connected codebases, returns CWE, confidence, severity, and suggested-fix details, and opens approved fixes in Claude Code on the web without exposing the Mythos model directly.
Claude Platform Makes Computer Use, Browser Use, Skills, and Files Generally Available
Anthropic says computer use, browser use, the Skills API, and the Files API are now generally available on the Claude Platform, combining multi-action software control with versioned skills and reusable files for production agents.
OpenAI Adds Transparent Backgrounds to GPT-Image-2 in API Preview
OpenAI added transparent-background output in preview for gpt-image-2 and gpt-image-2-2026-04-21 across the Images API and Responses API image-generation tool, with PNG or WebP output required.
Claude Managed Agents Add Memory Stores, Domain Controls, and a Redesigned Console
Anthropic's Claude Managed Agents updates let self-hosted sandbox sessions attach memory stores, restrict web_search and web_fetch with allowed_domains or blocked_domains, and inspect multi-agent sessions in a redesigned Claude Console viewer.
Cursor Cloud Agents Add Event Triggers, Long-Lived Goals, and Isolated Subagents
Cursor says Cloud Agents can now pick up work from events, keep working toward a long-lived goal, monitor pull requests, watch Slack threads, run scheduled tasks, and launch subagents in isolated virtual machines. The same update adds skill-based Custom Modes and less disruptive steering while an agent is working.
OpenAI's GPT-5.6 Builder's Guide Shows How to Make Agents More Efficient
OpenAI's GPT-5.6 builder's guide lays out a Responses API architecture for longer-running agents: persist reasoning, compact context, delegate work across agents, and move deterministic tool processing into code. OpenAI reports that these patterns raised GPT-5.6 Sol's ARC-AGI-3 score from 13.3% to 38.3% while using roughly 6x fewer output tokens.
Claude Code Desktop Adds Auto-Continue After Usage Limits
Claude Code waits in the open session and continues your task automatically when a claude.ai usage limit resets. It is on by default from version 2.1.234 in interactive sessions signed in with a claude.ai subscription. Turn it off in /config under 'Continue automatically at usage limit' or set autoContinueAtUsageLimit to false. It resumes work; it does not raise the limit.
Cursor Welcomes Firetiger to Connect Coding Agents to Production
Cursor says the Firetiger team is joining Cursor to bring production-operation agents closer to coding agents. Firetiger's agents monitor rollouts, catch regressions, investigate incidents, and pass their findings back to coding agents. The announcement points to a longer-term workflow, not an immediate Cursor plan or feature change.
Cursor Is Now Part of SpaceX
Cursor says its acquisition by SpaceX has officially closed. The Cursor team will join SpaceXAI, with the companies aiming to combine SpaceX's computing capacity and Cursor's product experience to build stronger, more economical models and make them useful in products such as Cursor and Grok.
Cursor Cloud Agents Start Up to 3x Faster With Builds
Cursor says Cloud Agents can start up to 3x faster with Builds, ready-to-use copies of development environments prepared in the background. Builds keep agents on the latest successful environment, expose logs and version history in the dashboard, and are now the default path for every Cloud Agent environment.
ChatGPT Desktop App Arrives on Linux in Preview
OpenAI is previewing the ChatGPT desktop app for Linux. The app brings ChatGPT, ChatGPT Work, and Codex to supported Linux systems, with official posts listing Ubuntu 24.04 and 26.04, Debian 13, and Fedora 43 and 44, plus .deb and .rpm packages for x64 and ARM64.
Codex Can Import Workflows From Other AI Agents
OpenAI now lets the ChatGPT desktop app and Codex CLI import supported setup and recent work from other agents. The desktop app can import from Claude Code, Claude Cowork, and Cursor, while Codex CLI supports Claude Code and Cursor, with automatic updates and import history available in the desktop app.
OpenAI Brings Codex Security Review to GitHub Pull Requests
Codex Security Review is OpenAI’s research-preview workflow for deeper security analysis of GitHub pull requests. It uses the diff, repository context, and optional threat-model guidance, then reports actionable findings in the pull request and a fuller report in Codex. Enterprise, Business, Edu, and Pro users can configure it; Plus is excluded.
Claude Code Sessions Can Now Message Each Other
Claude Code lets independent sessions discover and message one another, with controls for holding, refusing, or approving incoming messages. As of August 2026, sessions can also start conversations with sessions on other machines or Claude Code on the web, and native Windows is supported; the August 7 launch allowed only replies across machines and covered macOS and Linux. Messaging is on with nothing to enable; a held message in a headless session now expires after five minutes by default.
Agent Plugins: An Open Standard for Skills and MCP
OpenAI Developers introduced Agent Plugins, an open, vendor-neutral package format for sharing Agent Skills and MCP server configurations across compatible agent clients.
Cursor Router: Auto Balance, Auto Intelligence, and Cost Modes
Cursor Router is the routing system behind Auto, and Cursor documents it as available only on Teams and Enterprise plans. Open the model picker, select Auto, and pick Cost, Balance, or Intelligence under Optimize For. Every mode bills at the list price of whichever model the request is routed to.
Cursor SDK Bridge Opens Agent Control to Rust, Go, and More
Cursor has open-sourced an SDK Bridge that exposes a stable sdk.v1 protocol for driving Cursor agents from Rust, Go, Java, and other languages. Adapters run a small local bridge and communicate over Connect RPCs, while the bridge handles the connection to Cursor's API.
Cursor Agents Can Now Act Across Google Workspace
Cursor says new Google Workspace plugins give its coding agents direct access to Gmail, Google Drive, and Google Calendar. The plugins can search, read, draft, send, create, and manage Workspace data from inside Cursor, and install from the Cursor Marketplace or the Customize page.
OpenAI Details GPT-Live’s Full-Duplex Voice Architecture
OpenAI says GPT-Live is a third-generation voice system that can listen and speak at the same time, keep media flowing while deeper reasoning and tool use run asynchronously, and power ChatGPT Voice today. The architecture is also intended to underpin an upcoming GPT-Live API.
Cursor Says Cloud Agents Use 20-30% Fewer Tokens
Cursor says its cloud agents are now 20-30% more token efficient, with runs that use computer use becoming 80% more efficient. The update credits improvements to MCP, skills, computer use, and the cloud development environment behind those workflows.
GPT-5.4 Left ChatGPT-Signed-In Codex on August 31, 2026
OpenAI said GPT-5.4 and GPT-5.4 mini would stop being available in Codex for users signed in with ChatGPT on August 31, 2026, and that date has now passed. The models remain available through the OpenAI API and Codex sessions authenticated with an API key, confirmed September 1, 2026. Recommended replacements: GPT-5.6 Terra and GPT-5.6 Luna.
MCP 2026-07-28 Moves to a Stateless Core as Claude Rolls Out Support
Anthropic says the MCP 2026-07-28 specification moves the Model Context Protocol from a bidirectional stateful design to a request/response model, adds versioned extensions for MCP Apps and Tasks, and aligns authorization with production OAuth 2.0 and OIDC deployments.
OpenAI Releases Codex Security CLI for Repository Scans and CI Checks
OpenAI says its open-source Codex Security CLI can scan repositories, track findings across runs, verify fixes, and add security checks to CI/CD. The beta CLI requires Codex Security access and is built for teams that want code-aware security review in the terminal.
Codex ImageGen Adds a Lightbox + Canvas Workflow for Image Editing on Desktop
OpenAI Developers announced a new ImageGen workflow in Codex: a lightbox viewer and a canvas-style editing surface designed for direct, point-and-edit changes (erase, annotate, place text) instead of long prompt rewrites.
Claude Code Artifacts Expand to Pro and Max Plans (Private by Default)
Anthropic's ClaudeDevs says Claude Code Artifacts are now available on Pro and Max plans. The Claude Code docs now list Pro/Max/Team/Enterprise as eligible, with Pro/Max artifacts remaining private to the individual user.
Anthropic raises Claude API rate limits and consolidates tiers into Start, Build, and Scale
Anthropic consolidated Claude Platform usage tiers into three -- Start, Build, and Scale -- and raised rate limits so Sonnet and Haiku match Opus at every tier. Tier placement is automatic, based on usage history rather than spend, but each tier still carries a monthly spend cap.
Claude Code Adds Artifacts: Live, Shareable Pages for PR Walkthroughs and Dashboards
Anthropic introduced Artifacts in Claude Code, letting Team and Enterprise orgs turn an in-progress Claude Code session into a live web page that updates as the session progresses and can be shared privately within the organization.
Claude Design's `/design-sync` Makes Claude Design and Claude Code a Two-Way Workflow
Anthropic's `/design-sync` pulls your design system into Claude Design so everything Claude builds starts from your real components, and keeps work synced as you move between Claude Design and Claude Code. You can start in either surface, hand a finished design off to Claude Code, and continue from existing work instead of a screenshot.
Cursor Origin Enters Early Beta: Code Hosting, Pull Requests, and GitHub Sync
Cursor's Origin code-hosting platform is now rolling out in early beta to paid plans, with hosted repositories, pull requests, code browsing, GitHub sync, and agents in every repo.
Cursor Shared Canvases: Publish an Agent Canvas and Share It With Your Team via URL
Cursor added shared canvases -- you can now share a canvas from Cursor with your team by generating a link to a live snapshot that teammates open in the browser. Recipients view it read-only in the Cursor Dashboard, so you distribute a working dashboard or report instead of a full chat thread. Shared canvases are available on Pro, Teams, and Enterprise plans.
Claude Platform's 'ant' CLI Brings the Full Claude API to Your Terminal
Anthropic's 'ant' CLI exposes every Claude API resource as a terminal subcommand. As of September 2026 you install it through Homebrew, curl, or Go, authenticate by browser login, API key, or Workload Identity Federation, manage agents as code with 'ant apply' (CLI 1.30.0 or later), and run a self-hosted Managed Agents worker with 'ant beta:worker poll' or 'ant beta:worker run'.
Cursor Canvases: When to Ask the Agent for a UI Instead of Text
Cursor canvases are agent-generated interactive artifacts -- dashboards, reports, audits -- that render beside the chat. Cursor saves each one to your workspace canvas list, so you can reopen, edit, and rerun it later with fresh data. Publishing a canvas as a browser link for teammates needs a paid plan and a team.
Inside Claude Code's Rebuilt Desktop: Parallel Agents, Drag-Drop Panes, Side Chat
Anthropic rebuilt the Claude Code desktop app on April 14, 2026 around parallel agent workflows: a multi-session sidebar, drag-and-drop panes, an in-app file editor, integrated terminal, side chat, three view modes, and SSH on macOS. Four months on the app also creates routines and local scheduled tasks, browses external sites, and controls your computer.
How to Build Your Own MCP Server: A Beginner's Guide
Building an MCP server involves three steps: scaffold a TypeScript project with the MCP SDK, define tools that expose your desired functionality, and test the server locally with Claude Code or another MCP client. The entire process takes under an hour for a basic server.
Cursor vs Claude Code in 2026: Which AI Coding Tool Is Better?
Neither tool is terminal-only or editor-only any more. Cursor ships a CLI and Claude Code ships a desktop app, an IDE extension, and a browser surface. Choose Cursor for inline tab autocomplete and cross-lab model choice; choose Claude Code for one agent that follows you across surfaces.