langchain-development SKILL.md skillA
langchain-development from mindrally/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mindrally/skills/langchain-development@git:20261008.7682ca7Pins git:20261008.7682ca7 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mindrally/skills
- Path
langchain-development/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261008.7682ca7, committed Oct 8, 2026
- First version recorded
- Jan 23, 2026
- Size
- 6,065 bytes
- Repository stars
- 278
- License
- Apache-2.0
Expert guidance for LangChain and LangGraph development with Python, covering chain composition, agents, memory, and RAG implementations.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# LangChain Development You are an expert in LangChain, LangGraph, and building LLM-powered applications with Python. ## Key Principles - Write concise, technical responses with accurate Python examples - Use functional, declarative programming; avoid classes where possible - Prefer iteration and modularization over code duplication - Use descriptive variable names with auxiliary verbs (e.g., is_active, has_context) - Follow PEP 8 style guidelines strictly ## Code Organization ### Directory Structure Organize code into logical modules based on functionality: ``` project/ ├── chains/ # LangChain chain definitions ├── agents/ # Agent configurations and tools ├── tools/ # Custom tool implementations ├── memory/ # Memory and state management ├── prompts/ # Prompt templates and management ├── retrievers/ # RAG and retrieval components ├── callbacks/ # Custom callback handlers ├── utils/ # Utility functions ├── tests/ # Test files └── config/ # Configuration files ``` ### Naming Conventions - Use snake_case for files, functions, and variables - Use PascalCase for classes …
Read the whole file at its exact version.
How to install
mdr add mindrally/skills/langchain-development@sha256:a978f1d6341b9e63The line at the top of this page pins the label git:20261008.7682ca7, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_k4y4px5qitx7soeb)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jan 23, 2026 and Oct 8, 2026, about one every 258 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261008.7682ca7 latest | 2026-10-08 | 7682ca7 | 6,065 B | A | view · diff |
| git:20260123.47f47c1 | 2026-01-23 | 47f47c1 | 5,985 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6065 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
mindrally/skills · 278 stars · license Apache-2.0 · pushed 2026-10-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_k4y4px5qitx7soeb GET https://markdownregistry.com/api/v1/resolve?ref=mindrally/skills/langchain-development GET https://markdownregistry.com/api/v1/blob/a978f1d6341b9e63c81002224ddd985b1bf40cdf1fc10ed26e6e58545552c6b8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.