OpenAI GPT-6 Cyber: Who Gets Access and What It Can Do
OpenAI’s GPT-6 Cyber starts with a limited Daybreak Red rollout. Check eligibility, Codex and API access, and token pricing, then see how…
Kostja11 min read
Kostja
33 articles by Kostja.
DeepSeek DSH Superagent: From GitHub Requests to Agent Workflows
Understand how DeepSeek's DSH Superagent prototype turns authorized GitHub and Feishu requests into coding tasks, and which workflow…
Kostja8 min read
What Is Gemini Agent? Google's Universal Work Agent Explained
Gemini Agent is Google's universal work agent for persistent tasks, multi-agent coordination, model routing, and work across business…
Kostja12 min read
AI Agent Connectors Explained: MCP, OAuth, and Permissions
Learn how AI agent connectors use MCP, OAuth, scopes, resource permissions, and approval gates—and how to evaluate a connector before it…
Kostja13 min read
Local-First vs Cloud Agent Workspaces: Which Fits?
Compare local-first and cloud agent workspaces across files, privacy, background execution, connectors, reliability, and control—then…
Kostja9 min read
What Is an Agent Harness? Architecture, Loops, and Safety
Learn what an AI agent harness does, how its execution loop, context, tools, sandbox, approvals, tracing, and recovery fit together, and…
Kostja13 min read
What Is ChatGPT Space? Pages, Projects, and Permissions
ChatGPT Space organizes editable Pages, files, and collaboration. Learn how it differs from Projects and chat, how permissions work, and…
Kostja12 min read
Batch Convert Markdown Files — When One File Becomes a Folder
How to batch convert a folder of markdown files to PDF, Word or HTML: pandoc scripts, GUI tools, failure modes, and when folder-scale work…
Kostja14 min read
Best Markdown Editors in 2026 — Ranked by Workflow, Not Features
Obsidian, Typora, VS Code, Zettlr, iA Writer and more, ranked by workflow fit. What each editor trades away, and where browser tools beat…
Kostja16 min read
Math in Markdown: LaTeX Syntax and Where It Renders
How math in markdown works: dollar-sign LaTeX syntax, where it renders (GitHub, Obsidian, Jekyll), the KaTeX vs MathJax split, and honest…
Kostja13 min read
Markdown to Slides — Presentations From Plain Text
Turn markdown into slide decks: how the text-to-slides workflow works with Marp and Pandoc, what it trades away, and when a plain outline…
Kostja14 min read
Mermaid Diagram Examples: Flowchart, Gantt, Timeline Syntax
Copy-paste Mermaid examples for every major diagram type — flowchart, gantt, timeline, pie, and ER — with the core syntax, where each…
Kostja18 min read
Markdown Documentation Sites — Docs-as-Code Without the Migraines
How markdown documentation sites work: the docs-as-code workflow, what Docusaurus, MkDocs and VitePress each trade away, and when plain…
Kostja16 min read
Why Markdown Runs the AI Pipeline — Context In, Contracts Through, Output Out
Markdown has become the working format of AI pipelines: the context LLMs read best, the contract agents exchange, and the structure RAG…
Kostja16 min read
Convert HTML to Markdown — Clean Captures From Web and AI Chats
Convert HTML to Markdown to turn AI chat replies and web clippings into clean, portable .md files — what survives, what breaks, and the…
Kostja11 min read
How to Convert Markdown to PDF — Three Ways Ranked by Friction
Convert Markdown to PDF via a free no-install browser tool, pandoc on the command line, or editor plugins — with fixes for broken tables,…
Kostja9 min read
Markdown Cheat Sheet — Syntax You'll Actually Use, With Examples
A copy-paste Markdown cheat sheet: core syntax, GFM tables and task lists, and the escaping mistakes that break rendering in GitHub,…
Kostja11 min read
What Is Markdown? — Plain-Text Format Behind Docs, Notes and AI
Markdown is the 2004 plain-text syntax that became the default for docs, git repos, note apps and AI output — how it works, its dialects,…
Kostja13 min read
Online Markdown Viewer — Read Any .md File in Your Browser
An online Markdown viewer renders any .md file in your browser with nothing to install — what good viewers support, and which ones keep…
Kostja15 min read
How to Make a Table in Markdown — Syntax, Alignment and the Tricky Parts
The full guide to markdown tables: three-row structure, alignment colons, escaping pipes, line breaks inside cells, and why your table…
Kostja18 min read
The Markdown Resume — Maintain One Source, Export Every Format
Keep your resume as one Markdown source and export print-ready PDF, Word, and web on demand — structure, git history, and what ATS parsing…
Kostja19 min read
Markdown for Note-Taking — A Workflow That Outlives Any App
A markdown note-taking workflow built on plain files: naming, structure, links, and AI review. Why plain text outlives any app, and how to…
Kostja17 min read
GPT-6 Astra: Current Specs, Pricing, Safety, and When to Use It
GPT-6 Astra explained with current official facts: $10/$50 pricing, 1.05M context, tools, long-context premiums, Critical cyber safeguards,…
Kostja4 min read
Gemini 3.8 Flash — Google's New Coding & Agent Workhorse
What Gemini 3.8 Flash changes after 3.7: model specs, thinking levels, pricing, tool behavior, token trade-offs, limitations, and a…
Kostja3 min read
What Is Doubao Work? ByteDance's AI Office Agent Explained
Doubao Work explained as an AI office agent: verify its desktop, cloud, Feishu, artifact, permission, pricing, and regional boundaries…
Kostja3 min read
Gemini 3.7 Flash: Model ID, Pricing, Specs, and 3.8 Migration
Gemini 3.7 Flash guide covering the exact model ID, 1M context, multimodal tools, time-bound pricing, migration parameters, and when 3.8 is…
Kostja3 min read
What Is DeepSeek Harness — The Execution Layer for Agents
DeepSeek Harness is DeepSeek's own AI coding agent — the layer that turns V4 into an agent. Architecture, v0.1 open-source release, and…
Kostja14 min read
Genspark Super Agent: What's New in 2026 and Who It Fits
Genspark Super Agent explained through official capabilities and a reproducible research-to-artifact test: sources, permissions, retries,…
Kostja3 min read
HTML Is the New Markdown: What the Argument Actually Means
Trace the documented HTML-is-the-new-Markdown argument, inspect its examples, and separate human-facing artifact design from Markdown…
Kostja4 min read
HTML vs Markdown for AI Output — Which Format for Which Job
HTML vs Markdown for AI output depends on the job: a four-question decision framework plus the token, editing, and rendering trade-offs…
Kostja13 min read
Genspark Pricing: Plans, Limits, and What You Get
Genspark pricing broken down: what each plan includes, where the limits are, and whether the free tier is actually useful.
Kostja3 min read
What Is an LLM Wiki — and Should You Build One?
The Karpathy LLM wiki went viral for a reason. Here's what it actually is, who it's built for, and whether a solo operator needs one.
Kostja12 min read
Lark CLI: When to Use It — and When to Keep the Web App
Lark CLI automates Feishu workflows from the command line—but for solo operators, it's not always worth building. Here's how to decide.
Kostja3 min read
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Questions Explored in Kostja’s Articles
Explore questions covered in the articles listed here. Each answer links to its original explanation and publication context.
Is DSH Superagent an official DeepSeek product?
The code is published in DeepSeek’s official GitHub organization, but its README explicitly calls it a research prototype rather than an official product. The public version differs from the internal implementation and some designs remain unimplemented.
Source: DeepSeek DSH Superagent: From GitHub Requests to Agent Workflows
Can I run it without Feishu or a GitHub App?
Feishu is optional. The GitHub workflow requires a dedicated user account with write access to the target repository. A GitHub App cannot replace that account because this implementation reads user notifications.
Source: DeepSeek DSH Superagent: From GitHub Requests to Agent Workflows
What is Gemini Agent?
Gemini Agent is Google's cloud-based universal work agent. It accepts objectives, plans multi-step work, uses connected business tools, coordinates subagents, and returns finished work rather than only a chat response.
Source: What Is Gemini Agent? Google's Universal Work Agent Explained
Is Gemini Agent a new Gemini model?
No. Google separates the agent from the model beneath it. The agent holds context, tools, memory, permissions, and workflows, while steps can be routed across Gemini and Anthropic Claude models.
Source: What Is Gemini Agent? Google's Universal Work Agent Explained
Is MCP the same as an AI agent connector?
No. MCP standardizes how an AI host discovers and calls tools, resources, and prompts. A connector is the full integration, including the service API, authentication, credentials, permissions, host policy, approvals, logging, and recovery.
Source: AI Agent Connectors Explained: MCP, OAuth, and Permissions
Why do AI agent connectors use OAuth?
OAuth lets a connector act on a user's behalf without receiving the account password. It protects delegated access, but the token still needs narrow scopes, an intended audience, safe storage, expiration, revocation, and service-side authorization.
Source: AI Agent Connectors Explained: MCP, OAuth, and Permissions