arbitrum-defi-guide

arbitrum-defi-guide is a skill for Claude Code, Codex from nirholas/three.ws. It costs 71 tokens per session (1,626 once invoked), scanned A, original, Apache-2.0.

A guide to the Arbitrum DeFi ecosystem, where DeFi means blockchain-based financial services such as trading and lending. It covers Arbitrum One, an Ethereum layer-2 network, along with bridges, exchanges, lending protocols, gas, and major projects.

In plain words
What is it for?
Use it to navigate Arbitrum DeFi, compare exchanges and lending protocols, understand bridges and gas, or choose services for an Arbitrum-based application.
Why use it?
It gives developers a map of the protocols and assets available on Arbitrum. It also explains how Arbitrum differs from Ethereum mainnet in cost, speed, security, and tooling.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/nirholas/three.ws/arbitrum-defi-guide
Any agent
npx skills add nirholas/three.ws --skill arbitrum-defi-guide
Clone the repo
git clone --depth 1 https://github.com/nirholas/three.ws

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 arbitrum-defi-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/nirholas/three.ws/arbitrum-defi-guide.svg)](https://agentmods.dev/skills/nirholas/three.ws/arbitrum-defi-guide)
Your own site
<a href="https://agentmods.dev/skills/nirholas/three.ws/arbitrum-defi-guide"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/arbitrum-defi-guide.svg" alt="Measured on agentmods" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,626 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00071 $0.01626
Opus 5 $0.00036 $0.00813
Sonnet 5 $0.00014 $0.00325
Haiku 4.5 $0.00007 $0.00163

Measured 2d ago against content hash 67b24b092f5d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

arbitrum-defi-guide 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 2d 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.

data/skills/protocol/arbitrum-defi-guide/SKILL.md · 173 lines

How it starts

The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Arbitrum DeFi Ecosystem Guide

Arbitrum One is the largest Ethereum L2 by TVL. This guide covers the key protocols, opportunities, and practical knowledge for AI agents helping users in the Arbitrum ecosystem.

Why Arbitrum?

Feature Benefit
Low gas Swaps cost $0.01–0.30 vs $5–50+ on Ethereum L1
Fast ~2 second block times
EVM-compatible Same tools, wallets, and contracts as Ethereum
Highest L2 TVL Most liquidity and protocol diversity
Security Inherits Ethereum L1 security via fraud proofs

Chain ID: 42161 Native Token: ETH (bridged from Ethereum) Governance Token: ARB

Key Protocols on Arbitrum

DEXs

Protocol Type Specialty
Camelot V2 + V3 Arbitrum-native, concentrated liquidity, partner launchpad
Uniswap V3 Concentrated AMM Deepest liquidity for major pairs
SushiSwap V2 AMM Long-standing, diversified pools
Balancer V2 Weighted pools Composable liquidity, LST pools
Trader Joe V2.1 Liquidity Book Novel bin-based liquidity model

Lending

Protocol TVL Notes
Aave V3 Largest E-mode, flash loans, wide asset support
Compound V3 Growing Simplified model, USDC market
Radiant V2 Medium Cross-chain lending via LayerZero

Stablecoins & Yield

Protocol Product
Sperax USDs — auto-yield stablecoin (hold to earn), Farms, SPA governance
Pendle Yield tokenization — separate principal from yield
Plutus Governance aggregator, plvGLP, plvHEDGE

Derivatives

Protocol Type
GMX Perpetual futures, GLP vault
Vertex Hybrid orderbook + AMM
Gains Network Leveraged trading up to 150x

Infrastructure

Protocol Role
Chainlink Oracle infrastructure
The Graph Indexing and querying
LayerZero Cross-chain messaging

Bridging to Arbitrum

Read the full file on GitHub · 173 lines

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. 2d ago First seen · 173 lines · 71 tokens per session scan A 67b24b092f5d

Subscribe to this mod's changes

arbitrum-defi-guide is a skill published in the GitHub repository nirholas/three.ws (110 stars, last pushed today), licensed Apache-2.0. It adds 71 tokens to every session and 1,626 once invoked, about $0.0004 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 2026-09-03.

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