Agent skill

LLM Application Dev Langchain Agent

by aiskillstore in aiskillstore/marketplace

You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph.

No licenceAuto-check passedAI & LLM Engineering

Install LLM Application Dev Langchain Agent

skills CLI
$ npx skills add aiskillstore/marketplace --skill llm-application-dev-langchain-agent -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aiskillstore/marketplace llm-application-dev-langchain-agent --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/llm-application-dev-langchain-agent .claude/skills/llm-application-dev-langchain-agent && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
llm-application-dev-langchain-agent
GitHub stars
430
Used in
7 other repos
Token cost
~1.9k tokens
SKILL.md length
512 words
Files
2
Skills in repo
1,085
Repo updated
First seen
Licence
None found

At a glance

You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph.

  • Works in 3 steps: ReAct Agents: Multi-step reasoning with… → Plan-and-Execute: Complex tasks… → Multi-Agent Orchestration: Specialized…
  • Tasks that involve Building AI agents
  • SKILL.md covers Use this skill when, Do not use this skill when, Instructions and Context, plus 11 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

LLM Application Dev Langchain Agent is an agent skill from aiskillstore/marketplace. You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph.

Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).

It sits in AI & LLM Engineering, covering Building AI agents. It works with LangChain and LangGraph. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Tasks that involve Building AI agents

Example prompts

  • “/llm-application-dev-langchain-agent”

Requirements

  • Python 3

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. ReAct Agents: Multi-step reasoning with tool usage
  2. Plan-and-Execute: Complex tasks requiring upfront planning
  3. Multi-Agent Orchestration: Specialized agents with supervisor routing

What it can do on your machine

Read from SKILL.md and the folder at commit 4ac52da. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are python).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

LLM Application Dev Langchain Agent loads about 1.9k tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 512 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~40
When it runs · the whole SKILL.md, loaded when a task matches
~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 512 words (~1,945 tokens).

“You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph.”

— opening of SKILL.md by aiskillstore
name
llm-application-dev-langchain-agent

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in skills/sickn33/llm-application-dev-langchain-agent of aiskillstore/marketplace.

  • SKILL.md
  • skill-report.json

Open the folder on GitHubat commit 4ac52da

Used in 7 other repositories

We found 17 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 7 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.

Compare with similar skills

LLM Application Dev Langchain Agent next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

LLM Application Dev Langchain Agent compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
LLM Application Dev Langchain Agent this skillaiskillstore/marketplace4307 repos~1.9kAutomated safety check: PassNone
Mem0 Platform SDKmem0ai/mem067k1 repos~1.9kAutomated safety check: PassApache-2.0
LangSmith Trace DebuggingComposioHQ/awesome-claude-skills77k9 repos~2.7kAutomated safety check: PassNone
Add Example AgentGetBindu/Bindu10k—~1.1kAutomated safety check: NotesCustom licence
Failproof AI SDK IntegrationFailproofAI/failproofai5.3k—~6kAutomated safety check: PassCustom licence
Edgeone Makers MigrationTencentEdgeOne/edgeone-makers-tools1.9k1 repos~4.1kAutomated safety check: PassMIT

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Questions about LLM Application Dev Langchain Agent

What does LLM Application Dev Langchain Agent do?

You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph. LLM Application Dev Langchain Agent is an agent skill from aiskillstore/marketplace.1+ and LangGraph.

When should I use LLM Application Dev Langchain Agent?

LLM Application Dev Langchain Agent fits situations like: tasks that involve Building AI agents.

How do I install LLM Application Dev Langchain Agent in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill llm-application-dev-langchain-agent -a claude-code`. Or copy the skill folder (skills/sickn33/llm-application-dev-langchain-agent in aiskillstore/marketplace) into .claude/skills/llm-application-dev-langchain-agent in your project. Claude Code loads it when a task matches its description.

How do I install LLM Application Dev Langchain Agent in Codex?

Run `npx skills add aiskillstore/marketplace --skill llm-application-dev-langchain-agent -a codex`. Or copy the skill folder (skills/sickn33/llm-application-dev-langchain-agent in aiskillstore/marketplace) into .agents/skills/llm-application-dev-langchain-agent in your project. Codex loads it when a task matches its description.

Can I use LLM Application Dev Langchain Agent in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill llm-application-dev-langchain-agent -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/llm-application-dev-langchain-agent, .gemini/skills/llm-application-dev-langchain-agent, .github/skills/llm-application-dev-langchain-agent and .opencode/skills/llm-application-dev-langchain-agent in your project.

What does LLM Application Dev Langchain Agent need to run?

SKILL.md names no scripts, command-line tools or credentials: LLM Application Dev Langchain Agent is instructions for the agent only. Our summary lists: Python 3.

Does LLM Application Dev Langchain Agent access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is LLM Application Dev Langchain Agent safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does LLM Application Dev Langchain Agent use?

No licence was found for LLM Application Dev Langchain Agent or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does LLM Application Dev Langchain Agent use?

About 1.9k tokens (SKILL.md is roughly 7.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to LLM Application Dev Langchain Agent?

Skills that share tags, products or a category with LLM Application Dev Langchain Agent: Mem0 Platform SDK (mem0ai/mem0, 67k stars), LangSmith Trace Debugging (ComposioHQ/awesome-claude-skills, 77k stars), Add Example Agent (GetBindu/Bindu, 10k stars) and Failproof AI SDK Integration (FailproofAI/failproofai, 5.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains LLM Application Dev Langchain Agent?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.