langchain-specialist

langchain-specialist is an agent for Claude Code from jh941213/my-cc-harness. It costs 50 tokens per session (1,588 once invoked), scanned A, original, no licence file.

An agent for building projects with LangChain, LangGraph, and Deep Agents, which are tools for creating software that uses AI models and automated workflows. It covers AI agents, retrieval-augmented generation (RAG), and systems made from multiple agents.

In plain words
What is it for?
Use it to design or build AI agents, RAG pipelines, and multi-agent systems with these tools.
Why use it?
It gives project-specific guidance for designing and implementing AI workflows that may involve retrieved information or several cooperating agents.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the my-cc-harness plugin — 42 skills, 4 commands, 12 agents, 10 hooks shipped together

Good fit Use it to design or build AI agents, RAG pipelines, and multi-agent systems with these tools.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/jh941213/my-cc-harness/langchain-specialist
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/jh941213/my-cc-harness

Made for: Claude Code.

Or install my-cc-harness, the plugin that ships this one along with the rest of its 42 skills, 4 commands, 12 agents, 10 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for langchain-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/jh941213/my-cc-harness/langchain-specialist/github.svg)](https://agentmods.dev/agents/jh941213/my-cc-harness/langchain-specialist)
Your own site
<a href="https://agentmods.dev/agents/jh941213/my-cc-harness/langchain-specialist"><img src="https://agentmods.dev/badge/agents/jh941213/my-cc-harness/langchain-specialist/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for langchain-specialist

Your own site · 80×15
<a href="https://agentmods.dev/agents/jh941213/my-cc-harness/langchain-specialist"><img src="https://agentmods.dev/badge/agents/jh941213/my-cc-harness/langchain-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,588 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00050 $0.01588
Opus 5 $0.00025 $0.00794
Sonnet 5 $0.00010 $0.00318
Haiku 4.5 $0.00005 $0.00159

Measured 13d ago against content hash 6a06cd78a919, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

langchain-specialist scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 13d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/langchain-specialist.md · 137 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 13d ago First seen · 137 lines · 50 tokens per session scan A 6a06cd78a919

Subscribe to this mod's changes

langchain-specialist is an agent published in the GitHub repository jh941213/my-cc-harness (125 stars, last pushed 1mo ago), with no licence file. It adds 50 tokens to every session and 1,588 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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