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langgraph-agent-design

langgraph-agent-design is a skill for Claude Code, Codex from woliveiras/geremmyas. It costs 45 tokens per session (302 once invoked), scanned A, original, MIT.

A design guide for LangGraph agent workflows. LangGraph is a framework for building agents as connected steps that share state and can pause or resume.

In plain words
What is it for?
Use it to design or review graph state, nodes, tools, checkpoints, human approval pauses, failure handling, and tests.
Why use it?
It helps prevent unclear state handling, unsafe side effects, unreliable retries, and workflows that cannot recover or involve a person when needed.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 10repo 3mo ago A scan 45 tokens original MIT

Good fit Use it to design or review graph state, nodes, tools, checkpoints, human approval pauses, failure handling, and tests.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/woliveiras/geremmyas/langgraph-agent-design
View source ↗ woliveiras/geremmyas
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.

Any agent
npx skills add woliveiras/geremmyas --skill langgraph-agent-design
Clone the repo
git clone --depth 1 https://github.com/woliveiras/geremmyas

Made for: Claude Code, Codex.

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 langgraph-agent-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/woliveiras/geremmyas/langgraph-agent-design/github.svg)](https://agentmods.dev/skills/woliveiras/geremmyas/langgraph-agent-design)
Your own site
<a href="https://agentmods.dev/skills/woliveiras/geremmyas/langgraph-agent-design"><img src="https://agentmods.dev/badge/skills/woliveiras/geremmyas/langgraph-agent-design/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 langgraph-agent-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/woliveiras/geremmyas/langgraph-agent-design"><img src="https://agentmods.dev/badge/skills/woliveiras/geremmyas/langgraph-agent-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 302 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 original 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 $0.00045 $0.00302
Opus 5.5 $0.00018 $0.00121
Sonnet 5.5 $0.00009 $0.00060
Haiku 4.5 $0.00005 $0.00030

Measured 2mo ago against content hash ffa039417539, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

langgraph-agent-design 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 2mo 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.

content/skills/langgraph-agent-design/SKILL.md · 39 lines

What it actually says

LangGraph Agent Design

Design LangGraph workflows around explicit state, resumability, and controlled side effects.

Process

  1. Define the agent goal, entrypoint, terminal states, and user-visible output.
  2. Define the state schema before nodes and edges.
  3. List tools and side effects, including authorization and idempotency needs.
  4. Split nodes by responsibility: read state, do one step, return state updates.
  5. Choose persistence/checkpointer strategy for long-running or resumable work.
  6. Add interrupt() points for human-in-the-loop decisions.
  7. Define retry, resume, cancellation, and failure behavior.
  8. Plan tests for node behavior, graph routing, checkpoints, interrupts, and tool errors.

Rules

  • Keep interrupt order deterministic inside each node.
  • Do not hide mutable state outside the graph state unless it is a real external system.
  • Do not make non-idempotent tool calls without audit and recovery strategy.
  • Prefer simple graphs until the workflow needs branches, persistence, or HITL.

Output

  • State schema outline
  • Node and edge map
  • Tool and side-effect inventory
  • Checkpoint/HITL strategy
  • Test plan
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. 2mo ago First seen · 39 lines · 45 tokens per session scan A ffa039417539

Subscribe to this mod's changes

langgraph-agent-design is a skill published in the GitHub repository woliveiras/geremmyas (10 stars, last pushed 3mo ago), licensed MIT. It adds 45 tokens to every session and 302 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.

Building agents
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