Claude Code

From installation and configuration to advanced techniques, fully master the Claude Code CLI tool, actually powered by DeepSeek V4 / ModelStudio, to boost everyday development efficiency.

From trigger points to real-world use: an in-depth look at the design philosophy behind 30+ slash commands, the reasons they were created, practical scenarios, and how to use this system to greatly boost work efficiency.

After the Claude Code source leak in March 2026, Sigrid Jin initiated a clean-room rewrite. 193K+ Stars within 2 days. 10 Rust crates, 60+ slash commands, full MCP protocol, autonomous recovery, Hook lifecycle. A complete source-level dissection + item-by-item comparison with the OpenClaw tech stack + 7 borrowable design patterns.

Building on the PaddleOCR field practice, this pushes 'reading out the text' to 'usable data': locating the financial-statement pages, handling cross-page tables, field mapping and unit normalization for the three statements and segment information, JSON schema design, and a complete pipeline and checklist for automated proofreading via reconciliation relationships.

Gathers the methods of all the previous articles into one complete blueprint: the five-layer architecture of data, skills, orchestration, verification, and output; the input/output contract design of the skill library; five gates from format validation to low-confidence abstention; why coverage and accuracy must be counted separately; the seven-step method for building an evaluation set; post-launch operations mechanisms; and the four-stage evolution path from a solo tool to a team system.

A single Agent cannot finish an investment-research task: the context blows up, attention scatters, and errors cross-contaminate. This article gives the complete design for a three-stage collect / analyze / report division of labor — each stage's responsibilities and negative list, the structured JSON contract between stages, the write-scope partition, failure isolation and contamination detection, where to place the verification gates, and the cost-and-latency trade-off framework, with an architecture diagram and a failure-mode list.

The difficulty in comparable company analysis is not the arithmetic of multiples but the basis: fiscal year, currency, one-off items, and EV composition can all let two companies' numbers contaminate each other. This article breaks down the criteria for selecting peers, six categories of basis-unification rules, and the traps in choosing multiples, and gives a five-stage automation pipeline design with executable code, from data extraction to outlier handling.

The value of a DCF is not in computing one number but in whether the assumptions behind it can be examined, challenged, and recomputed. Using a hypothetical model for teaching, this article demonstrates the assumptions register, the three-stage cash-flow structure, the composition facets and trade-offs of WACC, the risks of the two terminal-value methods, the design of single-factor and two-factor sensitivity matrices, and how to present a valuation as a defensible range rather than a fragile single point.

Cursor, Trae, Claude Code, Codex, OpenClaw, Hermes Agent, DeepSeek Harness, WorkBuddy and Doubao Work sorted into three categories by form factor: IDE-embedded, terminal agent, and orchestration platform. For each category: what it gives you, how much control and visibility it takes away, and how people actually mix them in practice — so you can decide which category your first tool should come from.

From pure-prompt chatbots, CoT and ReAct reasoning prompts, and function calling — the real turning point — to MCP standardization, long-running CLI Agents, and always-on multi-Agent orchestration: era by era, what new capability the harness gained each time, and what new failure mode that capability incidentally introduced.

The flow of one real session explains what Claude Code is: a coding agent that lives in your terminal, reading files, editing files, running commands and iterating until the task is done. With installation methods, the CLAUDE.md memory mechanism, form factors beyond the terminal, the billing model, and the three kinds of people who should not start with it.

Anthropic's official terminal coding agent Claude Code, from system requirements, four install methods (native install script, Homebrew, WinGet, npm), the verification command, and browser sign-in, to permission modes and your first change. Every step spells out the output you should see and the real error messages listed in the official docs.

Your agent writes code in demos but breaks in production because you trained a brain without building a workbench. Five diagrams and everyday metaphors unpack Harness Engineering core concepts and rollout steps.

Vibe coding turns plain-language prompts into a working prototype in minutes. So why does it collapse in production? Three failure modes and five guardrails, so you can move fast without breaking things.