Zukko Blog
Guides to Claude Code, Cursor, Codex and the Claude and GPT APIs: setup, token savings and troubleshooting.
AI agent: what it is, how it is built and how it differs from a chatbot
5 min · · агенты
An agent is a model that picks its own actions and repeats a loop until the task is done. The structure, examples and honest limits.
Qwen Code or Claude Code: which terminal agent to pick
5 min · · сравнение
Two terminal agents with a similar feature set. We compare setup, models and API cost so the choice is not a blind one.
Aider or opencode: which terminal agent to choose
6 min · · сравнение
Both live in the terminal and connect to third-party models, but they are built differently: aider drives git for you, opencode is closer to an agent workbench.
LangChain: what it is, what it consists of and when you really need it
5 min · · development
What LangChain is and which packages it consists of, which tasks it helps with and when the plain OpenAI SDK is enough. We compare code and spending.
Cline: what this VS Code agent is and what it costs to run
6 min · · IDE
Cline reads your project, edits files and runs commands with your approval. Plan and Act modes, connecting your own key, and the cost of a typical task.
Claude Code: what this agent is and how it differs from a Claude chat
6 min · · агенты
Claude Code works not in a chat window but in your project folder: it reads files, edits them and runs commands. What it can do and what it costs in tokens.
Vibe coding in Russia: which tools work and what they cost
6 min · · агенты
Which vibe coding tools you can connect to models through a gateway, how to set them up and what an hour of agent work costs.
Claude Code in Russia: installation and use without an Anthropic subscription
5 min · · IDE
Install Claude Code, point it at a gateway with two variables and pay per token by SBP, MasterCard or crypto. Plus the first-run errors and how to fix them.
An MCP server for 1C: giving an agent your configuration metadata
6 min · · агенты
Without MCP the model invents attributes your configuration does not have. We show what an MCP server for 1C provides, how to install mcp-1c and connect an agent through a gateway.
An AI model to write website code: from mockup to a working page
5 min · · development
An agent can build a one-page site in one session if you brief it well and check the result in a browser. The process and the price, step by step.
LangChain vs LangGraph: when you need chains and when you need a graph
5 min · · development
LangGraph does not compete with LangChain, it sits underneath. We cover when a chain or create_agent is enough, when you need a stateful graph, with code on one model.
Function calling: how an agent works with external systems
5 min · · агенты
The model calls nothing itself: it only asks your program to run a function. The whole loop step by step, with Python code and a price estimate.
AGENTS.md for Codex CLI: what the file is and how to write it
5 min · · агенты
AGENTS.md is plain Markdown with instructions for the agent: build commands, tests, code style. How Codex discovers these files and what to put in them.
Claude Code on a remote server over SSH: install, API key and tmux
4 min · · development
Claude Code is a terminal agent and needs no GUI. Installing it on a server, authenticating with a Zukko key, working in tmux, and protecting the key.
Claude Code subagents: delegate tasks and keep your context clean
6 min · · агенты
A subagent handles a side task in its own context and returns only the summary. File format, ways to invoke, and model choice, based on the official docs.
Tool use in Claude: the full tool-calling loop in Python
4 min · · development
Tool use lets Claude call functions in your code. The whole loop: tool definitions, parallel calls, errors and limits.
Configure OpenClaw with Zukko — provider choice and config
4 min · · агенты
OpenClaw connects to Zukko as a custom provider. We cover the two API options, ready-made openclaw.json configs, and common errors.
Connect Hermes Agent to Zukko — Anthropic or OpenAI
4 min · · агенты
Hermes Agent works with Claude and GPT via an API key. Here's which wizard option to pick, which base URL to set, and how to verify the Zukko connection.
How much Claude Code costs per month via API: three usage profiles
7 min · · экономия
We price a month of Claude Code by tokens: three load profiles, a formula with caching, a comparison with subscriptions, and ways to stay on budget.
How to build an AI agent in Python from scratch: tool calling, loop, budget
5 min · · агенты
A minimal AI agent in Python with no frameworks: tools, a call loop, step and budget limits. Full code on the OpenAI SDK and an estimate of what one task costs.
What is an MCP server, why agents need it, and how to add one to Claude Code
7 min · · агенты
The Model Context Protocol in plain words: how it is built, how to add an MCP server to Claude Code, and why every connected server costs tokens.
How to cap API key spend so an agent doesn't drain your balance
6 min · · API keys
An agent stuck in a loop can burn through a balance overnight. A separate key, limits, a model list and proper error handling put a ceiling on spend.
What a Claude Code agent costs: a step-by-step session with cache
7 min · · агенты
What an agent's bill is made of, a 30-step session worked out on Opus 5.5 and Sonnet 5, where to see actual spend and how to set a ceiling.
The agent went in circles and burned the budget — catching it early
3 min · · агенты
One task ate a month's budget — nearly always a loop. The causes, and three ways to protect yourself.