// category

CLI Agents

Terminal-native coding agents — Claude Code, Codex CLI, Aider, OpenCode, Gemini CLI.

CLI agents are terminal-native coding assistants — Claude Code, Codex CLI, Aider, OpenCode, Gemini CLI. Unlike IDE extensions, they live in your shell, read your whole repo, run tests, and open PRs. This category covers releases, workflow changes, and the migration from autocomplete-style AI to task-level delegation.

155 stories · last 90 days

How to write a Claude Code skill (and the gotchas the docs skip)

Claude Code skills are markdown files stored in a folder at `~/.claude/skills/<name>/SKILL.md`, requiring only a name and description in YAML frontmatter to function. The description field acts as the trigger Claude matches against user requests to determine which skill to activate.

Dev.to - Claude · 2026-06-02

Harness: Turn a One-Line Prompt Into a Full Agent Team for Claude Code

Harness is a Claude Code plugin that generates multi-agent team scaffolding — including agent definitions, skill files, and orchestration logic — from a single plain-English prompt. It selects from six architecture patterns and is available via the Claude Code plugin marketplace or GitHub at revf...

Dev.to - Claude · 2026-06-02

Pasted File Editor

Simon Willison built a browser-based "Pasted File Editor" tool using Codex desktop, modeled after Claude.ai's feature that converts large text pastes into file attachments. The tool supports direct file opening, image thumbnails, and drag-and-drop onto a textarea.

Simon Willison · 2026-06-02

Claude Code Commands Beginner’s Handbook

A developer published a reference guide covering CLI commands, flags, and in-session slash commands for Anthropic's Claude Code tool, which is installed via npm as @anthropic-ai/claude-code. The guide covers session management, one-shot mode, piping file contents, authentication, and in-prompt sy...

Dev.to - Claude · 2026-06-01

The best Claude Code agents are defined by what they refuse to do

A developer published a method for writing Claude Code subagents centered on explicit "refusal lists" — instructions defining what the agent must not do — arguing these constraints prevent LLMs from producing bloated, unfocused output. The approach is illustrated with a pre-merge diff checker tha...

Dev.to - Claude · 2026-05-31

Claude Code Slash Commands You Should Know (I wasn't either)

Claude Code includes slash commands for session and context management, including /resume to continue prior sessions, /branch to fork conversations, /diff to review changes, /compact to compress context, and /security-review to audit code before deployment.

Dev.to - Claude · 2026-05-28

Getting Started with Claude Code: Your First AI Coding Partner

Anthropic's Claude Code is a command-line interface for AI-assisted software development that reads and writes files, executes commands, manages Git workflows, and reasons across up to 1 million tokens of codebase context. It runs on Claude Sonnet 4.6 by default for Pro users and Opus 4.6 on Max ...

Dev.to - Claude · 2026-05-28

Building OpenCode with Dax Raad

OpenCode, an open-source AI coding tool co-founded by Dax Raad, grew from approximately 650,000 to nearly 8 million monthly active users within a few months, alongside nearly 1 million daily active users. After Anthropic blocked integration with Claude Code, OpenCode pursued partnerships with Ope...

Pragmatic Engineer · 2026-05-28

I built a CLI that scaffolds agentic workflows for Claude Code

A developer released AgentKit, a CLI tool published as @patricksardinha/agentkit-cli on npm, that generates markdown orchestration files to structure multi-agent workflows for Anthropic's Claude Code. The tool requires no API key and works by reading a plain-language project blueprint to produce ...

Dev.to - Claude · 2026-05-28

How Claude Code Thinks: Inside Your AI Coding Assistant

Anthropic's Claude Code processes code as text through tokenization and pattern matching, without executing it. Current models include Claude Sonnet 4.6 and Opus 4.6/4.7 with 1M-token context windows, and Claude Haiku 4.5 with 200K tokens; the Claude 3 Haiku model has been retired.

Dev.to - Claude · 2026-05-28

How I manage 40+ skills across Claude Code, Codex, and .agents folders

A developer built a Go CLI tool to manage selective loading of 40+ skills across AI coding agents including Claude Code and Codex, after global skill directories caused irrelevant tool suggestions across different project contexts. Prior fixes including manual file moves and shell aliases failed ...

Dev.to - Claude · 2026-05-26

Vibe Coding: My Daily Workflow with Claude Code

A developer published their workflow for using Claude Code in AI-assisted ("vibe") coding, describing a hands-on approach where they write project plans independently before consulting the model, use separate context files to reduce token usage, and validate AI-suggested bug diagnoses before allo...

Dev.to - Claude · 2026-05-26

50 Claude Code Skills That Paid Developers Don't Talk About

A developer published a collection of Claude Code CLI prompt templates covering tasks such as generating conventional commit messages, pre-push code review, codebase mapping, refactoring planning, and root cause analysis. A full pack of 50 prompts spanning git, security, DevOps, and architecture ...

Dev.to - Claude · 2026-05-25

How to use Claude in vscode?

A tutorial describes how to configure the Claude Code VSCode extension to use Zhipu AI's Anthropic-compatible API endpoint by creating a config.json file in the ~/.claude directory and setting ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN environment variables in VSCode settings.

Dev.to - Claude · 2026-05-25

Writing Your Own Claude Code Skill in 2026: The Practical Guide

Claude Code supports a custom skills system where users create SKILL.md files in a plugin directory to store reusable instructions that trigger automatically based on user prompts. Each skill consists of a directory with a SKILL.md file containing frontmatter metadata and a body with instructions.

Dev.to - Claude · 2026-05-22

I built nvm-style account manager for Claude Code

A developer released "claudenv," a shell-based account manager for Claude Code that uses the `CLAUDE_CONFIG_DIR` environment variable to switch between multiple Claude accounts. It supports global defaults, per-project `.claudenvrc` files, and auto-switching on directory change, requiring only ba...

Dev.to - Claude · 2026-05-21

How to use Claude Code like you’ve used it for a year

A developer with nearly a year of Claude Code experience published a guide covering session management techniques, including when to use /compact versus /clear, how subagents protect main context, and why hooks are more reliable than memory for consistent behavior.

Dev.to - Claude · 2026-05-20

How data science teams use Codex

OpenAI published guidance on how data science teams can use Codex to automate analytical outputs including root-cause briefs, KPI memos, impact readouts, scoped analyses, and dashboard specifications from existing work inputs.

OpenAI Blog · 2026-05-16

How business operations teams use Codex

OpenAI published a guide showing how business operations teams can use Codex to generate documents such as initiative briefs, strategy updates, leadership decision packets, and progress updates from existing work inputs.

OpenAI Blog · 2026-05-16

2026 Best Claude Code Skills: Top 8 Skills, Setup Guide & Use Cases

Claude Code Skills are folders containing SKILL.md files that provide Claude Code with reusable workflow instructions, loading approximately 100 tokens per skill at session start and expanding only when triggered. A Dev.to guide outlines eight such skills for 2026, including Frontend Design, Play...

Dev.to - Claude · 2026-05-15

OpenAI’s Codex is now in the ChatGPT mobile app

OpenAI is adding Codex, its AI coding assistant, to the ChatGPT mobile app on iOS and Android. The move follows a recent Codex update that enabled it to operate apps on macOS, as OpenAI competes with Anthropic's Claude Code.

The Verge - AI · 2026-05-15

OpenAI brings Codex to the ChatGPT mobile app

OpenAI added Codex to the ChatGPT mobile app on iOS and Android, where it connects to a desktop machine running Codex via a relay layer rather than operating as a standalone product. The feature is rolling out to all Codex users, including free and Go plan subscribers, with macOS support only for...

The New Stack · 2026-05-15

Work with Codex from anywhere

OpenAI added Codex access to the ChatGPT mobile app, allowing users to monitor, steer, and approve coding tasks remotely across devices and remote environments.

OpenAI Blog · 2026-05-15

Agent Poke: Scheduled Check-ins for Codex and Claude Code

A developer released "agent-poke," an open-source Docker-based tool that sends scheduled "Hey!" messages to OpenAI Codex CLI and Claude Code at four fixed times daily to trigger subscription usage windows. The tool uses cron jobs and requires manual login via each CLI's official auth flow.

Dev.to - Claude · 2026-05-15

⚽️ Claude Code Isn’t the Only Game in Town

Several AI coding agents compete with Anthropic's Claude Code, including OpenAI's Codex, which offers built-in browser access and cloud environments, and openCode, an open-source alternative. Most offer free tiers, and the tools vary in form factor between CLI, TUI, and full applications.

Dev.to - Claude · 2026-05-14

How finance teams use Codex

OpenAI published a guide describing how finance teams can use its Codex coding assistant to automate tasks including monthly business reviews, reporting packs, variance bridges, model checks, and planning scenarios.

OpenAI Blog · 2026-05-13

7 Claude Code Routines That Actually Save Me Hours Each Week

Claude Code's Routines feature lets users configure automated cloud-based jobs that run on schedules, API triggers, or GitHub events without requiring a local machine. Usage limits are 5 routines per day on Pro, 15 on Max, and 25 on Team and Enterprise plans.

Dev.to - Claude · 2026-05-13

Claude Code Dreaming - What /dream Actually Does for Your Memory

Anthropic's Claude Code includes a memory consolidation feature called Dreaming, which reads project memory files, removes stale entries, and merges duplicates into a condensed version. It runs automatically after roughly 24 hours and five sessions of inactivity, or can be triggered manually with...

Dev.to - Claude · 2026-05-13

You Can Probably Use Claude Code for Free at Work

Claude Code can be configured to route requests through Microsoft Azure AI Foundry by setting environment variables and authenticating via Azure CLI, allowing users whose employers already have Claude models deployed on Foundry to avoid a $17/month personal subscription fee.

Dev.to - Claude · 2026-05-13

OpenAI Codex vs Claude Code: Hands-On Python Benchmark for Devs

A benchmark pitting OpenAI Codex against Anthropic's Claude Code on identical Python tasks found Claude Code completed refactoring in roughly four minutes versus Codex's seven, and produced cleaner bug fixes on first attempts. Codex generated more extensive refactors with larger diffs; both tools...

Dev.to - AI · 2026-05-12

I Built a Skin System for Claude Code — Here's How It Works

A developer built a skin system for Claude Code that adds nine visual themes to the terminal interface, each with custom colors, ASCII banners, tool sounds, and narration styles. The system runs on bash using Claude Code's SessionStart, SessionEnd, and PostToolUse lifecycle hooks with YAML config...

Dev.to - Claude · 2026-05-12

Why 157,000 developers are hedging against Anthropic with OpenCode

SST's OpenCode, an open-source coding agent, has accumulated 157,000 GitHub stars — surpassing Anthropic's own Claude Code repository at 122,000 — after Anthropic blocked third-party OAuth authentication to Claude Pro and Max subscriptions in January 2026 without advance notice.

The New Stack · 2026-05-11

Claude Code Source Analysis Series, Chapter 4: Context Management

A developer series analyzing Claude Code's source code covers context management in its fourth installment, explaining that the coding agent rebuilds its full model request each turn from system rules, tool descriptions, message history, and compressed summaries, since the underlying model is sta...

Dev.to - Claude · 2026-05-10

Claude auf Colossus: Musk-Deal verdoppelt Code-Limits

Anthropic has rented 300 megawatts of compute capacity from xAI's Colossus 1 datacenter, nearly 70% of its total capacity, as Claude usage grew 80-fold annually in Q1 2026. The deal doubled the 5-hour usage limit in Claude Code and expanded API rate limits, with Tier 1 output tokens rising from 8...

Dev.to - Claude · 2026-05-10

🧠 I Tried 100 Claude Skills. These Are The Best.

Anthropic's Claude Code platform added a feature called Agent Skills — modular capability packs defined by a directory containing a SKILL.md file — enabling Claude to load context and scripts on demand rather than at startup. Claude Code runs on terminal, IDE, desktop, web, iOS, and Slack, using ...

Dev.to - Claude · 2026-05-10

OpenAI Codex arrives in the browser with new Chrome extension

OpenAI released a Chrome extension for its Codex product that allows agents to operate within a user's existing browser session, accessing signed-in sites, cookies, and authenticated workflows across multiple tabs. The extension connects Chrome to the Codex desktop app on Windows and macOS, enabl...

The New Stack · 2026-05-09

Stop hand-syncing Claude Code and Codex configs

A developer released ai-config-sync-manager v0.1.0, a Node.js CLI tool that synchronizes configuration files between Claude Code and OpenAI Codex, translating between their differing formats for agents, permissions, and MCP servers. The tool runs via npx and supports six sync areas with automatic...

Dev.to - Claude · 2026-05-08

OpenClaw and Claude can put your AI-generated podcasts in Spotify

Spotify released a command-line tool called "Save to Spotify" that lets AI agents such as Claude Code and OpenAI Codex upload AI-generated audio summaries and podcasts directly to a user's Spotify podcast feed. The tool is available on GitHub and is triggered by adding "save to Spotify" to an AI ...

The Verge - AI · 2026-05-08

Live blog: Code w/ Claude 2026

Anthropic held a "Code w/ Claude 2026" developer event featuring morning keynote sessions focused on Claude Code, its AI coding tool. Simon Willison live-blogged the event for simonwillison.net.

Simon Willison · 2026-05-07

Which Claude Code Hook Do You Need? A Decision Guide

Claude Code supports four hook handler types — command, prompt, agent, and http — across 21 lifecycle events. Command hooks run in under 5ms and produce deterministic results, while prompt hooks invoke an LLM and take 300–2000ms, and agent hooks spawn full Claude Code sessions with file and tool ...

Dev.to - Claude · 2026-05-06

Stop prompting Codex like ChatGPT

A developer guide argues that OpenAI's Codex, an autonomous coding agent that reads repos and runs commands, performs better when given bounded "atomic" tasks with defined outcomes and verification steps rather than the open-ended conversational prompts suited to ChatGPT.

Dev.to - AI · 2026-05-06

Running Claude Code and Claude Desktop on Amazon Bedrock

Claude Code CLI and Claude Desktop can be configured to use Amazon Bedrock as the inference backend by setting environment variables in ~/.claude/settings.json and providing AWS IAM credentials, removing the need for a separate Anthropic API subscription.

Dev.to - Claude · 2026-05-04

Claude Code is powerful—but a black box: how much is it spending? looping? how much context is left? I built claudestat: a real-time dashboard with costs, tool calls, loop detection, and reports. npm i -g @deibygs/claudestat full visibility.

A developer released claudestat, an npm package that provides a real-time monitoring dashboard for Claude Code sessions, tracking token costs, tool calls, context usage, and detecting loops. It is installable via `npm i -g @deibygs/claudestat`.

Dev.to - Claude · 2026-05-04

6 Claude Code skills for indie hackers — with real output samples

A developer outlined six Claude Code workflow configurations for indie hackers: a pre-deploy shipping checklist, launch thread writer, support reply drafter, pricing page generator, architecture decision recorder, and competitor analysis tool. Each is designed to read actual codebase files and ou...

Dev.to - Claude · 2026-05-04

Codex for Claude Code Users: What to Know Before You Try It

A developer documented their shift from Claude Code to OpenAI's Codex for personal projects, citing lower cost and improved model quality around GPT-5.4 and later versions. The guide outlines differences in tooling, subscription plans, and CLI vs. desktop app usage for Claude Code users evaluatin...

Dev.to - Claude · 2026-05-04

Sightings

Simon Willison added a "Sightings" section to his blog that pulls in wildlife photos from his iNaturalist account, back-populating over a decade of observations totaling 208 entries. He built the feature using Claude Code on his phone as an extension of his existing content syndication system.

Simon Willison · 2026-05-03

Building a self-hosted deep-research agent with Claude Code

A developer released Scout, an MIT-licensed self-hosted research agent that uses Claude Code to convert GitHub Issues into cited research reports published to GitHub Pages. The system includes a pre-research "sharpening" step that clarifies ambiguous queries before dispatching parallel sub-agents...

Dev.to - Claude · 2026-05-02

I built Governor to reduce Claude Code token and context waste

A developer released Governor, an open-source Claude Code plugin that compresses memory files, filters build/test log output, and adds usage telemetry to reduce token consumption. Small local benchmarks reported approximately 55% reduction in output tokens and 96% of noisy pytest output blocked.

Dev.to - Claude · 2026-05-02

Claude Code gave me no mirror. I built one.

Developer Robert Nowell released "skill-tree," a tool that analyzes Claude Code session history against 11 collaboration behaviors from Anthropic's February 2026 AI Fluency Index study, scoring users and assigning one of seven archetype cards. It is available as a Claude Code plugin and as an npm...

Dev.to - Claude · 2026-05-02

Codex CLI 0.128.0 adds /goal

OpenAI released Codex CLI version 0.128.0, adding a `/goal` command that causes the coding agent to loop repeatedly until it determines a user-set goal has been completed or a configured token budget is exhausted. The feature is implemented via two prompt templates injected automatically at the e...

Simon Willison · 2026-05-01

Claude Code is Gem

A software engineer with a background in trading systems at Bloomberg described shifting from skepticism about LLMs to regular use of Claude Code after finding that structuring interactions with proper context improved results more than prompt wording alone.

Dev.to - Claude · 2026-04-28

Claude Code Token Usage Hides in History and Tools

In Claude Code, token consumption is dominated by system prompts, conversation history, tool definitions, and CLAUDE.md project files rather than the user's typed input. Anthropic recommends keeping CLAUDE.md under 200 lines and notes that HTML block comments in that file are stripped before cont...

Dev.to - Claude · 2026-04-26

Hijacking OpenClaw with Claude

A developer described a method to connect OpenClaw, an open-source AI agent framework, to Claude by using the authentication built into the Claude Code CLI binary, bypassing the need for a separate API key or web account.

Dev.to - Claude · 2026-04-26

An update on recent Claude Code quality reports

Anthropic confirmed that user complaints about degraded Claude Code performance over the past two months were caused by three separate bugs in the Claude Code harness, not the underlying models. One bug, introduced March 26, caused session memory to be cleared every turn after an idle period rath...

Simon Willison · 2026-04-24

How to get started with Codex

OpenAI published a guide for getting started with Codex, its AI-based coding agent, covering project setup, thread creation, and task completion. The guide is aimed at new users beginning to work with the tool.

OpenAI Blog · 2026-04-24

Beyond Drag-and-Drop: Automating n8n Workflows with Claude Code

A developer tutorial describes using Anthropic's Claude Code CLI to generate n8n workflow JSON files from natural language prompts, bypassing manual node configuration in n8n's visual editor. The approach involves prompting Claude to produce importable JSON that n8n can execute across its 400+ in...

Dev.to - Claude · 2026-04-24

Codex settings

OpenAI published documentation for configuring Codex settings, covering options for personalization, detail level, and permissions to customize how the AI coding agent runs tasks.

OpenAI Blog · 2026-04-24

Automations

OpenAI added an Automations feature to Codex that allows users to schedule and trigger automated tasks, including report generation, summaries, and recurring workflows without manual intervention.

OpenAI Blog · 2026-04-24

What is Codex?

OpenAI offers Codex, an agent-based product designed to automate tasks, integrate with external tools, and generate outputs such as documents and dashboards, extending beyond standard chat interactions.

OpenAI Blog · 2026-04-24

Plugins and skills

OpenAI's Codex supports plugins and skills that allow users to connect external tools, access data sources, and define repeatable workflows to automate tasks.

OpenAI Blog · 2026-04-24

What Building a Geopolitical Simulation Taught Me About Claude Code

A developer built GeoSim, a geopolitical simulation engine using Next.js 14, Supabase, and the Anthropic API, in which six AI agents representing world powers simultaneously plan moves across branching timelines. The project used Claude Code's hook system to auto-run tests on file save and a 216-...

Dev.to - Claude · 2026-04-22

Rally(class project)

Two students built Rally, a location-based social platform for posting and joining local activities, as a class project over two 2-week sprints using Anthropic's Claude Code for planning, coding, testing, and deployment. Their workflow included a CLAUDE.md configuration file, automated lint and t...

Dev.to - Claude · 2026-04-20

You've Been Using Claude Wrong. Here's Agent Mode

A tutorial contrasts using Claude as a chat tool versus agent mode, where Claude Code and Model Context Protocol (MCP) allow the model to read codebases, edit files, run tests, and interact with external tools like GitHub and Slack autonomously. A cited survey found 55% of engineers regularly use...

Dev.to - Claude · 2026-04-19

CLAUDE.md vs System Prompt: What Actually Controls Claude Behavior

In Claude Code, system prompts are ephemeral API-level instructions that reset each session, while CLAUDE.md is a persistent, project-scoped file stored in the repository that Claude reads automatically at session start. When the two conflict, CLAUDE.md instructions are treated as high-priority p...

Dev.to - Claude · 2026-04-18

Claude Code accounts switcher, Finally!!

A developer released "claud-code-account-switcher," an npm package that allows Claude Code users to switch between multiple accounts while preserving each account's authentication, history, plugins, and MCP server configurations. It is available via `npm install -g claud-code-account-switcher`.

Dev.to - Claude · 2026-04-18

Adding a new content type to my blog-to-newsletter tool

Simon Willison updated his blog-to-newsletter tool to include a new content type called "beats" — posts capturing external activity like open source releases and museum visits — by prompting Claude Code to clone a reference GitHub repo and modify the relevant HTML file in a single session.

Simon Willison · 2026-04-18

Codex for (almost) everything

OpenAI released a major update to Codex, used by over 3 million developers weekly, adding background computer use, an in-app browser, image generation via gpt-image-1.5, more than 90 new plugins, GitHub PR review support, SSH connectivity, scheduled task automations, and a memory feature for reta...

OpenAI Blog · 2026-04-17

OpenAI’s big Codex update is a direct shot at Claude Code

OpenAI updated its Codex desktop coding tool with the ability to operate desktop apps on macOS, generate images via gpt-image-1.5, browse the web natively, schedule tasks, and retain memory from past sessions. The update also adds plugins for GitLab, Atlassian Rovo, and Microsoft Suite, with EU a...

The Verge - AI · 2026-04-17

Claude Code can now do your job overnight

Anthropic launched "routines" for Claude Code, allowing automated tasks to run on schedules, via API calls, or GitHub webhooks on Anthropic's cloud infrastructure, replacing manual GitHub Actions setups for tasks like issue triage and smoke testing.

The New Stack · 2026-04-15

Claude Code Routines

Anthropic released documentation for Claude Code Routines, a feature within its Claude coding platform available at code.claude.com.

Hacker News - Best · 2026-04-15

10 GitHub Repos That Turn Claude Code Into a Productivity Machine

Ten open-source GitHub repositories provide extensions and integrations for Claude Code, including Repomix for codebase context, Dify and Flowise for visual workflow builders, and Onyx for self-hosted AI alternatives. Installation is available via terminal commands or plugin marketplace.

Dev.to - Claude · 2026-04-12

Claude Code: Self host model configuration

Claude Code can be configured to use self-hosted models by setting ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN environment variables, then running claude with the --model flag to specify a local model like qwen3-coder-next.

Dev.to - Claude · 2026-04-09

GitHub Copilot CLI combines model families for a second opinion

GitHub introduced Rubber Duck, an experimental feature in Copilot CLI that uses a second AI model to review coding agent plans before execution. Testing showed Claude Sonnet paired with GPT-5.4 as Rubber Duck achieved 74.7% of the performance gap between Sonnet and Opus, with larger gains on comp...

GitHub Blog · 2026-04-07