Zexu Jin
Community@jackjin1997 · Hangzhou, China
Backend engineer focused on Agent Harness, Tool Use, MCP, Evals, and AI infrastructure.
Agent Skills by Zexu Jin
Showing 39 vetted skills indexed across 1 GitHub repositories.
jackjin1997langsmith-dataset
Generate and upload LangSmith trace-based evaluation datasets for LangChain agents.
jackjin1997planning-with-files
Create markdown planning files for multi-step task management.
jackjin1997clean-code
Enforce clean code principles for naming, functions, comments, and class design.
jackjin1997LangChain Dependencies
Manage LangChain, LangGraph, and LangSmith package versions for Python and TypeScript projects.
jackjin1997Self-Evolving Skill
Automate skill evolution through predictive coding and value-driven mechanisms.
jackjin1997ddd
Guide Domain-Driven Design with strategic and tactical patterns.
jackjin1997LangGraph Persistence & Memory
Implement state checkpointing and thread-based memory for LangGraph applications.
jackjin1997obsidian-markdown
Create and edit Obsidian Flavored Markdown with wikilinks, embeds, callouts, and properties.
jackjin1997langchain-agents
Develops AI agents with LangChain v1.0, LangGraph, and LangSmith SDKs.
jackjin1997clean-code-zh
Review Python code snippets for adherence to Clean Code principles.
jackjin1997language-learning
Teach any language through adaptive conversational lessons and vocabulary drills.
jackjin1997LangChain Middleware & HITL
Implement middleware patterns for LangChain agents with human approval and structured output.
jackjin1997EchoDecks Skill (v1)
Integrates with the EchoDecks platform to manage flashcards, generate content, and run study sessions.
jackjin1997LangChain Fundamentals
Create LangChain agents with create_agent, @tool, and middleware.
jackjin1997getajob
Scan job listings, track applications, and generate tailored resumes and cover letters.
jackjin1997study-habits
Track study sessions and schedule spaced repetition reviews.
jackjin1997moltbook
Enables AI agents to post, comment, vote, and manage communities via API.
jackjin1997github-trending-analyzer
Fetch, categorize, and summarize trending GitHub projects across daily, weekly, and monthly periods.
jackjin1997resume-optimizer
Create, customize, analyze, and export ATS-optimized resumes as PDFs.
jackjin1997Deep Agents Orchestration
Orchestrate AI agent workflows with subagent delegation and TodoList planning.
jackjin1997Deep Agents Memory & Filesystem
Manage agent memory and file operations with pluggable backends.
jackjin1997LangChain RAG Pipeline
Build end-to-end RAG pipelines with document loading, chunking, and vector storage.
jackjin1997smart-commit
Generate descriptive Git commit messages from code diffs using an LLM.
jackjin1997resume-builder
Generates JSON resumes conforming to the Reactive Resume schema via conversational AI.