Guides to AI models and API integration
Guides to AI models, agents and the Ailoot API.
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- How to undo changes in Claude Code: /rewind and gitRewind modes, checkpointing limitations, git checkout, stash, reflog, and protection against destructive commands. Five ways to restore a state.
- How to Upgrade from Free Claude to Pro in 2026How Claude Pro differs from the free plan, how much it costs, when you need it, how to upgrade, keep your data, and cancel your subscription.
- Claude Code Recovery: Safe Mode, /cd, and FallbackDiagnosing Claude Code with safe mode, the /cd command, fallback models, and settings recovery. The order of checks and original limitations.
- Qwen Code AI API key: issue, connect and calculate usageWhat is an AI API key for Qwen Code, how it differs from a subscription, where to issue one, how to configure settings.json, and what determines token usage.
- How to Top Up Your Claude Console Balance in 2026Where the top-up button is in Claude Console, how credits and auto-reload work, which roles are needed, and where to check supported countries. A review based on Anthropic documentation.
- AI API pricing in 2026: token costs, comparison and budget calculationAI API pricing with numbers: why output costs more than input, how to estimate tokens for a request and when the cache discount actually cuts the bill.
- How to Open Your Site to ChatGPT, Claude, and Perplexity Search CrawlersNames of search and training crawlers, a complete robots.txt example, sitemap, text availability, and citation limitations.
- FrontierCode Diamond: 13.4% mergeable patches on 50 hard tasksThe June 2026 FrontierCode results: 13.4% on Diamond’s 50 hard tasks versus 51.8% on Extended, and how to inspect an AI-generated patch.
- How to migrate from Claude Code to Codex in 2026: a step-by-step guideCodex can import supported Claude Code setup. Check instructions, skills, MCP connections, hooks, and workflows against an inventory; manual work depends on your setup.
- Images and fonts in a product: sources and licensesUnsplash, Pexels, Google Fonts, and paid licenses: terms of use, attribution, and checking the rights for each file.
- GitHub Code in a Commercial Product: Licenses and What to CheckPermissive licenses MIT, Apache, and BSD, copyleft GPL/AGPL, the absence of a LICENSE file, and checking the origin of code added by AI.
- Your Own Claude Subscription vs a Ready-Made Account: Key DifferencesHow paying for your own subscription differs from buying a ready-made account, what risks of transferring access Anthropic describes, and what to check with an intermediary.
- Parallel Claude Code Work: worktree, Agents, and WorkflowsFour layers of parallel Claude Code work, git worktree isolation, outcome verification, GUI tools, and limits on workload and tokens.
- n8n vs Claude Code in 2026: what to choose for automationA comparison of n8n and Claude Code: when no-code hits its ceiling, how to migrate a working flow to an AI agent, pricing, and 6 signs it’s time to move on.
- Alibaba’s Open Code Review: installation and your first reviewSet up a model for Open Code Review, check Git changes, and review the findings. Delegation mode uses your agent’s model.
- OpenCode Install Guide: AI API Providers, Setup, and ModelsFor an OpenCode install Linux users can run the native script. The OpenCode install npm method also works with bun, pnpm, and yarn.
- Claude in the App Store: Payment, Restoring a Purchase, and RefundsApple Pay, Apple Account, and the App Store: the differences, linking a Claude subscription, Restore Purchase, USD prices in the US store, and cancellation and refund rules.
- Devin: Plans, Payment Conditions, and Reasons a Card Is DeclinedWhat you pay for in Devin, Free/Pro/Max/Teams plans, the difference between access problems and a card decline, credits, and refund rules.
- Opus 4.8 in Claude Code: What’s New, Pricing, and How to Switch in 2026What changes in Claude Code with Opus 4.8 on May 28, 2026: Dynamic Workflows, xhigh effort, Fast Mode. Exact prices, benchmarks, decision matrix.
- Response styles in Claude Code: how to switch and create your ownWhat output styles in Claude Code are and how they differ from CLAUDE.md: four built-in styles, switching via /config, and how to write your own.
- PDFs in Claude Code: Conversion, Tokens, and Preserving StructureMarkItDown, PyMuPDF4LLM, MCP, complete conversion scripts, PDF limits, and cases when visual analysis matters more than token savings.
- Claude Code can’t see project files: why and what to do in 2026Why Claude Code can’t find project files: it was started from the wrong folder, the file is in a subfolder, or it’s in .gitignore. How to grant access with add-dir, cd, and settings.
- Why Claude Code rereads the entire project and how to fix itClaude Code doesn’t index code and rereads the project from scratch, burning tokens. How to give it persistent code memory via MCP and reduce usage.
- Why Claude Does the Wrong Thing: 3 PromptsClaude writes the wrong thing because it rushes into code without understanding your intent. I explain why and give you 3 ready-to-use prompts to make it ask questions first.
- Why an AI agent says “done” when the work isn’t finishedReward hacking, completion criteria, independent acceptance, and two ready-to-use prompts for checking the actual result.
- Email for Claude: choosing an address and protecting accessSign in with Google or email, email delivery, inability to change your address, a corporate domain, and preserving account access.
- Website Design with an AI Agent: Claude Code and Refero DESIGN.mdRefero Styles design context: DESIGN.md structure, choosing a visual system, importing it into CLAUDE.md, four steps to create a page, and common mistakes.
- Qwen 3.7 and 3.7 Max: what the model for coding can do in 2026Qwen 3.7 versions and regional prices from Alibaba documentation, vendor-reported comparisons, evidence limits, and a pilot for measuring real task cost.
- Qwen Code stopped working: why and what to do in 2026I explain why Qwen stopped working: free access was closed, chat and terminal got confused, and there was a 401 error. How to get the agent working again without a card.
- Claude Registration: Phone and Identity VerificationA number from a supported country, SMS verification, restrictions on virtual numbers, separate Persona verification, and the differences between registration, access, and payment.
- AI coding agent rankings in 2026: who actually solves tasksDetailed analysis: AI coding agent rankings in 2026: who actually solves tasks.
- Routines in Claude Code: 5 ready-to-copy routinesRoutines in Claude Code 2026: 3 trigger types (cron/webhook/GitHub), 5 ready-to-copy routines, plan limits, and step-by-step setup.
- Security review in Claude Code: step-by-step guide and GitHub Action automation in 2026How to check the security of a vibe project with /security-review in Claude Code. Setup steps, a GitHub Action template, 6 types of vulnerabilities, and honest limitations.
- How much does vibe coding cost: subscription, services, and time for revisionsClaude Code pricing in your project budget: subscription charges, connected services, hosting, and time spent checking and revising the result.
- Should you buy a ready-made Claude account in 2026: what you riskBased on Anthropic's documents, I examine the risks of buying someone else's Claude account: losing access, losing money, and getting blocked. And why your own account is more reliable.
- Ultracode in Claude Code 2026: how to enable it with one commandUltracode in Claude Code: a mode where Claude launches a team of agents itself. How it differs from /effort xhigh, how to enable it, and how quickly it burns through tokens.
- utm_source=chatgpt.com: how to measure traffic from ChatGPTUTM tag and referrer, a segment in Metrika, landing pages, GA4, and the roles of OAI-SearchBot, GPTBot, and ChatGPT-User.
- WhatsApp Business Tools MCP: how to connect WhatsApp Business to an AI agentMeta's official MCP server for WhatsApp Business: what the agent can do, the connection command in Claude Code, setup in Codex and ChatGPT, and beta version limitations.