// engineering log
Autonomous agents in production, explained from the code.
Software engineering for autonomous agents: architecture, automation, security and production deployment, documented without shortcuts.
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AI agents
AI agents, skills and plugins for Claude Code, Codex and other assistants: what they do, how to install them and how to use them in a business, tested for real.
16 articles
Open source tools
Open source alternatives to Figma, Adobe and other paid software: what they are, how to install them, how well they really work and their license, tested.
3 articles
Self-hosting
Guides to install and run open source software on your own VPS: Docker, Coolify, databases, HTTPS and backups, with commands tested in production.
Complete guides
Complete series meant to be followed in order, from the first part to the last.
guide · 14 parts
Matt Pocock's skills for Claude Code and Codex in pairs: grill-me, specs, tickets, TDD, debugging, code review and architecture, with real tests.
AI agents
guide · 5 parts
Everything about Open Code Review (ocr), Alibaba's AI code reviewer: what it is, install, custom rules, use with Claude Code and automatic PR review in CI.
AI agents
guide · 2 parts
Everything about Anatomy, the Claude skill that draws interactive isometric figures: what it is, what it is for, how to install it and a real worked example.
AI agents
guide · 2 parts
Which US, EU and Ecuador laws apply to your AI-built app, blog or SaaS, how to spot them, and a real audit case with screenshots.
AI agents
guide · 3 parts
Everything about Paymenter, the open source WHMCS alternative: what it is, how to install it on a VPS with Coolify and Docker and how to set it up to bill.
Self-hosting
Latest articles
We tested webapp-testing, Anthropic's official skill that tests your local web app with Playwright: setup, with_server.py, two real pitfalls and what it costs.
- Skills for your agents
- Claude Code
video-shotcraft is an Apache-2.0 skill with 150 shots that lets Claude Code build your product's promo video in Remotion. How it works and what it costs.
- Skills for your agents
- Claude Code
AI agents
Bang Motion is an MIT skill that builds openers, promos and explainers as one GSAP index.html: how it works, how to install it and what it really costs.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #14
Matt Pocock's teach and wait-what: a learning workspace with HTML lessons and progress records, and a command that makes the agent re-explain what you missed.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #13
Matt Pocock's retro and writing-for-agents: a retrospective that improves the agent's environment and a guide to writing CLAUDE.md and skills.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #12
Matt Pocock's pr and wizard: a PR format with a visual summary, evidence and merge danger, and bash wizards for API keys, CI secrets and migrations.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #11
Matt Pocock's handoff and to-questionnaire: a document so another agent can continue your work, and a questionnaire to get from someone what only they know.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #10
Matt Pocock's wayfinder and triage: a map of decision tickets for projects too big for one session, and a state machine to triage incoming issues.
- Skills for your agents
- Claude Code
A tour of the 19 skills in the anthropics/skills repo: what each one does, how to install them in Claude Code, which license they use and what they cost.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #9
Matt Pocock's prototype and research: throwaway prototypes (logic in one HTML file or several UIs) and background research with cited sources.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #8
Matt Pocock's improve-codebase-architecture and codebase-design: find shallow modules, propose deep ones in an HTML report and decide through grilling.
- Skills for your agents
- Claude Code
AI agents
Impeccable gives your coding agent 24 design commands and a 62-rule detector for “AI slop”. We tested it on a real landing page: cost, limits and risks.
- Skills for your agents
- Design, image and video
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #7
Matt Pocock's implement, implement-spec and code-review: build a ticket with TDD and review it on two axes, standards and spec, with subagents.
- Skills for your agents
- Claude Code
Fish Speech 3.0 ships Drama 3 and S2-Pro: voice cloning and TTS you can run on your own GPU. Hardware, license and what it costs compared with ElevenLabs.
- Free alternatives to paid apps
- Run it on your server
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #6
Matt Pocock's tdd and diagnosing-bugs skills: red-green TDD at agreed seams and a six-phase method for hard bugs, built on a loop that goes red first.
- Skills for your agents
- Claude Code
Anthropic's harness to find vulnerabilities with Claude Code: /vuln-scan, /triage and /patch skills, a gVisor-sandboxed pipeline and our real test.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #5
Matt Pocock's to-spec and to-tickets turn a grill-me session into a spec and vertical tickets with blocking edges, ready for an agent to implement.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #4
Matt Pocock's grill-with-docs and domain-modeling: how they build a GLOSSARY.md and ADRs while you sharpen an idea, with a real test on a sample repository.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #3
Four real grill-me sessions in Claude Code: moving a SaaS to a VPS, preparing a talk, launching an ebook and a change inside a repository. Prompts and lessons.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #2
Grill me, Matt Pocock's most popular skill: how it works inside (decision tree, rounds and frontier), how to install it and a real 20-question session.
- Skills for your agents
- Claude Code
AI agents
guide · Matt Pocock's skills for Claude Code: the complete guide · #1
Matt Pocock's 27 skills for Claude Code, Codex and Copilot: the problem each group solves, how to install them and the idea-to-PR flow they propose.
- Skills for your agents
- Claude Code
We review OpenMontage, the open source system that turns Claude Code or Codex into a video studio: pipelines, cost per video, AGPL license and limits.
- Claude Code
- Skills for your agents
AI agents
Chain copywriting, frontend-design, schema and seo-audit in Claude Code to ship a landing page ready to publish. Real test, costs and the 5 errors we hit.
- Skills for your agents
- Claude Code
AI agents
Build a WhatsApp AI agent with wa-agent-starter (MIT): setup with Claude Code, Coolify deploy, its 4 prompt injection defenses, our test results and 3 fixes.
- Security and code review
- Step-by-step tutorials
What prompt injection is, how it gets into an AI agent and how to prevent it: lethal trifecta, layered defenses, security skills and a real test.
- Security and code review
- Skills for your agents
We review editonny 1.1.0, the MIT skill for Claude Code and Codex that cuts pauses, adds captions and motion scenes to your videos without leaving your machine.
- Skills for your agents
- Claude Code
Open source tools
What Speridlabs' Idol is, how it turns one photo into a 3D Gaussian splat, how much GPU it needs, how to install it and which licenses to check first.
- Design, image and video
- Free alternatives to paid apps
AI agents
Install claude-code-owasp, the MIT skill that reviews code with OWASP Top 10:2025, ASVS 5.0 and the 2026 LLM and agentic risks. Real test with and without it.
- Skills for your agents
- Claude Code
A code-level look at Concat 0.2.8, the free, local CapCut alternative: Whisper captions, no watermark, AGPL license and a built-in MCP server for AI agents.
- Free alternatives to paid apps
- Design, image and video
What prompts.chat (formerly Awesome ChatGPT Prompts) is: 2,744 CC0 prompts, a Claude Code plugin, an MCP server, a CLI and how to self-host it with Docker.
- Claude Code
- Skills for your agents
Open source tools
What Dioramas is: an MIT framework for 3D landing pages in three.js, with a Nano Banana 2 + Meshy 7.1 asset pipeline, a post-processing engine and 20 examples.
- Design, image and video
- Step-by-step tutorials
AI agents
What Archify is: the Claude Code, Codex and Cursor skill that draws architecture, sequence and ERD diagrams as interactive HTML. Install, prompts and license.
- Skills for your agents
- Claude Code
Open source tools
We review VoiceStudio 0.5.7: voice cloning and design, video dubbing, dictation and MCP for Claude Code on your PC. AGPL license and which models you can use.
- Free alternatives to paid apps
- Claude Code
AI agents
What ODD (Organic Driven Development) is, how it differs from SDD, Spec Kit and Kiro, when to use each one and how to apply it in Claude Code.
- Claude Code
- Skills for your agents
Open source tools
Filee converts images, PDF, Word, Excel, video and 266 formats when you drop a file on a ring menu at your cursor. Free, MIT, offline. What it does and setup.
- Free alternatives to paid apps
- Design, image and video
Call.md transcribes your calls live, suggests what to say, queries your MCP tools and saves the summary as Markdown. How it works, requirements and license.
- Free alternatives to paid apps
- Claude Code
We tested OpenMuse, CopilotKit's MIT personal agent with a browser, terminal and files: what it does, how to install it, what works without an account.
- Free alternatives to paid apps
- Run it on your server
Open source tools
Google Maps Scraper Kit turns local businesses into a CSV of names, phones, emails and websites, free and on your machine. Use cases, setup and the legal side.
- Free alternatives to paid apps
- Marketing and SEO
System Design 101 collects 400 free visual guides from ByteByteGo on APIs, databases, caching and distributed systems: what is inside and its license.
- Free alternatives to paid apps
- Claude Code
Open source tools
Recordly records your screen and adds auto zoom, a smooth cursor, backgrounds and webcam on Windows, macOS and Linux. What it does, how it works, its license.
- Free alternatives to paid apps
- Design, image and video
What OpenSEO is, the MIT Semrush and Ahrefs alternative: how it works, what it costs, how to self-host it with Docker and use it from Claude Code over MCP.
- Free alternatives to paid apps
- Marketing and SEO
AI agents
guide · Open Code Review guide: AI code review · #5
Set up Open Code Review to review every pull request with AI in GitHub Actions or GitLab CI: workflow, secrets, SARIF, cost control and security pitfalls.
- Security and code review
- Step-by-step tutorials
AI agents
guide · Open Code Review guide: AI code review · #4
Use Open Code Review inside Claude Code on your subscription: plugin, skill and delegation mode, with a real test that caught 7 serious bugs in a sample API.
- Security and code review
- Claude Code
AI agents
guide · Open Code Review guide: AI code review · #3
Customize Open Code Review with rule.json: priority layers, include and exclude, merge_system_rule, ocr rules check and the rule-ordering mistake to avoid.
- Security and code review
- Step-by-step tutorials
AI agents
guide · Open Code Review guide: AI code review · #2
Install Open Code Review, connect Anthropic, OpenAI, DeepSeek or Ollama and review changes, commits and branches with ocr: preview, JSON, SARIF and real errors.
- Security and code review
- Step-by-step tutorials
AI agents
guide · Open Code Review guide: AI code review · #1
What Open Code Review (ocr) is, Alibaba's open source AI code review CLI: how it works inside, its benchmark against Claude Code, license and when to use it.
- Security and code review
AI agents
How to use NVIDIA's SkillSpector with find-skills to discover Claude Code skills and catch malicious code before installing them. Real tests and screenshots.
- Skills for your agents
- Claude Code
Install and use security-audit, Cloudflare's MIT skill that audits your code with agents: its modes, project setup and a real audit walked through step by step.
- Skills for your agents
- Claude Code
Open source tools
Solid Glass turns your shadcn/ui components into smoky glass with one stylesheet. Real examples, a comparison with Material UI and how to use it in Next.js.
- Design, image and video
Open source tools
BG0 removes photo backgrounds in your browser with WebGPU or WebAssembly: no upload, no account. How it works, which model it runs, its license and limits.
- Free alternatives to paid apps
- Design, image and video
Open source tools
Two immersive websites made with HyperFrames 0.8.170, GSAP and Claude Code, for bikes and cars, with scroll-driven scenes: demos, timings, pros and limits.
- Design, image and video
- Claude Code
Open source tools
We tested HyperFrames 0.8.170, HeyGen's Apache 2.0 framework that renders HTML to MP4: setup, local Kokoro voiceover, background music and real errors.
- Design, image and video
- Marketing and SEO
Open source tools
We review It's a Plan 1.5, the open source issue tracker with AI agents: what it does, how it works, pros and cons, and if it fits companies or freelancers.
- Free alternatives to paid apps
- Run it on your server
AI agents
We tested Superpowers 7.0, the MIT skills plugin for Claude Code, Codex and Cursor: what each skill does, how to install it and how it changes your agent.
- Skills for your agents
- Claude Code
Open source tools
We tested FigCraft 0.5.1, the open source Figma alternative written in Rust: features, install, its CLI and MCP server for AI agents, and what it still lacks.
- Free alternatives to paid apps
- Design, image and video
AI agents
guide · Anatomy guide: interactive illustrations with Claude Code · #2
Install the Anatomy skill in Claude Code, write the right prompt and build a real interactive illustration: a web cache explained in 12 minutes, with code.
- Skills for your agents
- Claude Code
How to use Vercel Labs' find-skills so Claude Code finds, compares and installs the right skill for each task. A real test with screenshots.
- Skills for your agents
- Claude Code
AI agents
guide · Anatomy guide: interactive illustrations with Claude Code · #1
What Anatomy is: the MIT Claude Code skill that draws interactive SVG and WebGL machines to explain technical ideas, what it is good for and what it is not.
- Skills for your agents
- Claude Code
A practical guide to Claude Code skills: what a SKILL.md is, where skills live, npx skills add, invoking them with /name and sharing them with your team.
- Skills for your agents
- Claude Code
AI agents
guide · Legal guide for AI-built apps and websites · #2
We audited codigoagente with the legal checklist: fonts, cookies, affiliate links, privacy and Ecuador's LOPDP. What was fine, what we fixed, what's left.
- Legal
AI agents
guide · Legal guide for AI-built apps and websites · #1
COPPA, Google Fonts and GDPR, session replay, CAN-SPAM, subscriptions, DMCA and Ecuador's LOPDP: what applies to your app or blog, plus a prompt to audit it.
- Legal
AI agents
What the 17 social-media-skills for Claude and Codex really do, how to install them, which order to use them in and what they need (Apify, Gemini).
- Skills for your agents
- Marketing and SEO
Self-hosting
guide · Paymenter guide: what it is, installation and setup · #3
Configure Paymenter after installing it: settings, catalog, payment gateways, tickets, roles and the MIT licence, with the real questions a small agency asks.
- Run it on your server
- Step-by-step tutorials
Self-hosting
guide · Paymenter guide: what it is, installation and setup · #2
Run Paymenter in production on a Contabo VPS with Coolify and Docker: domain, HTTPS, MariaDB, Redis, cron, backups and real errors fixed step by step.
- Run it on your server
- Step-by-step tutorials
Self-hosting
guide · Paymenter guide: what it is, installation and setup · #1
What Paymenter is, how it works under the hood and when to use it: MIT-licensed, self-hosted billing for hosting and subscriptions, a WHMCS alternative.
- Free alternatives to paid apps
- Run it on your server