Zukko Blog
Guides to Claude Code, Cursor, Codex and the Claude and GPT APIs: setup, token savings and troubleshooting.
How to write Cursor rules in .cursor/rules without wasting tokens
4 min · · IDE
Cursor rules are persistent instructions for the agent. The .mdc format, four ways a rule gets applied, examples, and how rules affect the size of every request.
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 in CI/CD: non-interactive -p mode and GitHub Actions
5 min · · development
Claude Code can run without a UI: it takes a task via -p, does the work and exits. The documented flags and a working workflow for pull request reviews.
Claude Code on Windows: native or WSL install and Zukko setup
5 min · · development
Claude Code runs on Windows natively and in WSL. Official install methods, Git Bash, environment variables for Zukko, and the usual errors.
MCP servers in Claude Code: connect GitHub, databases and your own APIs
5 min · · development
MCP connects external tools to Claude Code: GitHub, databases, internal APIs. Commands, configuration scopes, and how MCP affects token usage.
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.
Claude Code hooks: run scripts before and after agent actions
6 min · · development
Hooks run your scripts on Claude Code events: format code after edits, block risky commands, send notifications. A walkthrough of the configuration 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.
Migrating from OpenRouter to Zukko: what to change in code and config
5 min · · development
Moving from OpenRouter to Zukko's OpenAI-compatible API comes down to the address, key and model names. Every change, OpenRouter-specific parameters and a rollout plan.
GPT-5.6 Sol or Claude Sonnet 5? Same price on Zukko, how to choose
4 min · · models
On Zukko both models cost the same and work in either API format. What actually differs, and how to compare the models on your own tasks.
Sonnet 5 or Opus 5.5? Same price on Zukko, so test on your own tasks
4 min · · models
On Zukko both models cost the same, so you choose by results on your tasks. Here is how to run an A/B test and what to measure.
Claude Opus 5.5 overview: API access, pricing and testing on your tasks
5 min · · models
How to call Claude Opus 5.5 via Zukko, what a request costs by formula, and how to decide on your own tasks whether you need this model.
Qwen Code CLI with Claude, GPT, and GLM via Zukko
4 min · · IDE
Qwen Code isn't limited to Qwen models: it supports OpenAI-compatible APIs, so through Zukko you can use Claude, GPT, and GLM in it.
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.
Claude Code in VS Code — extension and integrated terminal
5 min · · IDE
Claude Code runs in VS Code both as an extension with a graphical panel and as a CLI in the integrated terminal. Both read one settings.json, so you set up Zukko once.
Classify customer inquiries with AI: Python example
3 min · · development
Support tickets, complaints, feature requests — some go to tech, some to product, some to the archive. Here's how an AI model routes them.
Generate SQL queries with AI: Python example
4 min · · development
The user asks a question in plain language, the model generates SQL. Feed the schema into the prompt and validate the query before running it.
LLM integration in Django: views, streaming, Celery and cost tracking
4 min · · development
Connecting a model to a Django project: OpenAI SDK client, a cached view, a streaming response, long jobs in Celery and a spend table in the admin. With common pitfalls explained.
Next.js Route Handler for AI: streaming responses in the App Router
4 min · · development
We write app/api/chat/route.ts that streams a model response through the OpenAI SDK, plus a client component that renders text as it is generated. The key stays on the server.
AI chat on Streamlit: streaming, history and settings
4 min · · development
Building a Streamlit chat app: history in session_state, streaming output with st.write_stream, model choice in the sidebar, the key in secrets.toml and spend from usage.
Streaming LLM responses in Node.js Express with the OpenAI SDK
4 min · · development
A working Express endpoint that receives a model stream through the OpenAI SDK and forwards it to the browser over SSE. Plus a fetch-based frontend, cancellation and error handling.
Connect AI to Google Sheets via Apps Script and API
5 min · · бизнес
A custom =ASK_AI() function for Google Sheets: classification, summaries, and data extraction right in a cell, with caching and Apps Script quotas in mind.