Arbitrum One · OP Rollup · GMX Native

Arbitrum & ARB API
for AI Agents

Arbitrum One delivers Ethereum-grade security at a fraction of the cost. AI agents on Arbitrum pay pennies per transaction, tap GMX perpetuals natively, access Uniswap v3 deep liquidity, and hold USDC issued directly by Circle. Purple Flea gives your agent a full Arbitrum wallet and REST API with no wallet setup, no KYC, and no infrastructure to manage.

$0.01
Avg tx fee
<1s
Block time
$500M+
GMX TVL
42161
Chain ID
No KYC
Agent-first

Why Arbitrum for AI Agents?

Arbitrum One is the leading Ethereum Layer 2 by total value locked, consistently surpassing $15 billion in assets secured under Ethereum's consensus while charging a fraction of mainnet fees. For AI agents that need to transact frequently — checking positions, rebalancing portfolios, paying for data feeds, or routing payments between counterparties — Arbitrum is the chain where economics work. A transaction that costs $5–20 on Ethereum mainnet costs $0.01–0.10 on Arbitrum One.

The fee advantage alone would make Arbitrum compelling, but the ecosystem seals the deal. GMX, the largest on-chain perpetuals exchange in DeFi by open interest, is native to Arbitrum. Agents running trading strategies — trend-following, funding rate arbitrage, delta-neutral hedging — can access real futures markets with deep liquidity and low slippage without ever leaving Arbitrum. Purple Flea's Hyperliquid API handles similar strategies off-chain; GMX on Arbitrum handles them fully on-chain with Ethereum-level settlement guarantees.

Uniswap v3 on Arbitrum offers deep spot liquidity across ETH, WBTC, ARB, USDC, LINK, and hundreds of other ERC-20 tokens. USDC on Arbitrum is natively issued by Circle, making it the canonical stablecoin for agent treasuries. The ARB governance token adds a native asset for agents participating in the Arbitrum DAO or receiving grants. And because Arbitrum is fully EVM-compatible, any Purple Flea tool that works on Ethereum mainnet works identically on Arbitrum — same ABI encoding, same ethers.js calls, same REST endpoints.


Arbitrum API Features

Everything an AI agent needs to operate on Arbitrum One, via a single REST API.

Arbitrum Wallet Creation

Spin up a non-custodial BIP-44 Arbitrum wallet in one API call. Receive ETH, USDC, ARB, GMX, and any ERC-20. Your agent owns its keys; Purple Flea signs on your behalf.

Send ETH & ERC-20 Tokens

Transfer ETH, USDC, ARB, WBTC, LINK, and any ERC-20 on Arbitrum. Gas is estimated automatically using EIP-1559 fees. Confirmations typically arrive in under 2 seconds.

GMX Perpetuals

Open and manage leveraged positions on GMX's ETH, BTC, and LINK perpetual markets. Access real on-chain futures without centralized exchange KYC or counterparty risk.

Uniswap v3 Swaps

Swap any token pair available on Uniswap v3's Arbitrum deployment. Purple Flea finds optimal routes, handles ERC-20 approvals, and submits the transaction on your agent's behalf.

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Balance & Position Queries

Fetch ETH balance, any ERC-20 balance, open GMX positions, Uniswap v3 LP positions, and pending transaction status. All aggregated into a single structured API response.

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Cross-Chain Bridging

Bridge assets between Ethereum mainnet and Arbitrum via the official Arbitrum bridge or third-party aggregators. Move USDC, ETH, and other tokens in both directions from your agent.


GMX Perpetuals for AI Agents

The largest on-chain perps DEX, natively available through Purple Flea's Arbitrum API.

On-Chain Perpetuals Without CEX Risk

GMX is the dominant perpetuals DEX on Arbitrum, with over $500 million in total value locked and consistently high open interest across BTC, ETH, and LINK markets. Unlike centralized exchanges, GMX positions are settled on-chain with Arbitrum's Ethereum-backed security. Your agent's collateral sits in verifiable smart contracts, not in an exchange's custody.

GMX v2 introduced isolated markets, dynamic fee tiers, and improved oracle pricing via Chainlink and custom price feeds. Purple Flea's GMX integration wraps the v2 order router, handling position sizing, collateral management, and take-profit/stop-loss orders. Agents running funding rate arbitrage strategies can compare GMX funding rates directly against Purple Flea's Hyperliquid API data to identify cross-venue opportunities.

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Open Long/Short

Long or short ETH, BTC, and LINK with up to 50x leverage on GMX v2. Set collateral in USDC or ETH. Purple Flea handles position sizing and slippage limits.

GLP Staking Yield

Provide liquidity to GMX by minting GLP tokens. GLP earns 70% of GMX protocol fees in ETH and esGMX. Purple Flea automates GLP mint/burn and reward claiming for yield agents.

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Funding Rate Monitoring

Poll GMX hourly funding rates alongside Purple Flea's Hyperliquid funding data to find arb opportunities. Long underfunded, short overfunded, collect the spread.


Arbitrum vs. Other L2s

How Arbitrum One stacks up against other EVM chains for AI agent workloads.

Metric Arbitrum One Optimism Base Ethereum Mainnet
Avg Tx Fee $0.01–0.10 Lowest $0.001–0.01 $0.001–0.05 $1–20+
Block Time <1s Fastest ~2s ~2s ~12s
Finality ~1 week (Ethereum) ~7 days ~7 days ~13 min
Rollup Type Optimistic (Nitro) Optimistic (Bedrock) Optimistic (OP Stack) L1
Native DEX GMX + Uniswap v3 Best Perps Velodrome + Uniswap v3 Aerodrome + Uniswap v3 Uniswap v3 + Curve
TVL (DeFi) $15B+ Highest L2 ~$1B ~$3B $50B+
USDC Type Native (Circle) Best Native (Circle) Native (Circle) Native (Circle)
Chain ID 42161 10 8453 1
EVM Compatible Yes Yes Yes Yes

Get Your Agent on Arbitrum

From zero to a funded Arbitrum wallet in four API calls.

01

Register your agent

Create an agent account and receive an API key. Your agent identity is stored on Purple Flea — wallets are derived deterministically.

register.sh
# Register your agent on Purple Flea curl -X POST https://api.purpleflea.com/v1/agents/register \ -H "Content-Type: application/json" \ -d '{"name": "my-arbitrum-agent", "chain": "arbitrum"}' # Response: { "agent_id": "agt_...", "api_key": "pfk_..." }
02

Create an Arbitrum wallet

Provision a non-custodial BIP-44 wallet on Arbitrum One. Returns your public address immediately.

create-wallet.sh
curl -X POST https://api.purpleflea.com/v1/wallets \ -H "Authorization: Bearer pfk_..." \ -H "Content-Type: application/json" \ -d '{"chain": "arbitrum", "label": "main"}' # Response: # { # "wallet_id": "wlt_...", # "address": "0x1234...abcd", # "chain": "arbitrum", # "chain_id": 42161 # }
03

Check ARB and USDC balance

Fetch all token balances for your Arbitrum wallet in a single call. Returns ETH, USDC, ARB, GMX, and any other ERC-20 in your wallet.

get-balance.sh
curl https://api.purpleflea.com/v1/wallets/wlt_.../balance \ -H "Authorization: Bearer pfk_..." # Response: # { # "ETH": { "balance": "0.05", "usd": "185.00" }, # "USDC": { "balance": "500.00", "usd": "500.00" }, # "ARB": { "balance": "100.00", "usd": "67.00" }, # "GMX": { "balance": "2.00", "usd": "48.00" } # }
04

Send USDC on Arbitrum

Transfer USDC to any address on Arbitrum One. Fees are typically under $0.05. Confirmation in under a second.

send-usdc.sh
curl -X POST https://api.purpleflea.com/v1/wallets/wlt_.../send \ -H "Authorization: Bearer pfk_..." \ -H "Content-Type: application/json" \ -d '{ "token": "USDC", "chain": "arbitrum", "to": "0xRecipientAddress", "amount": "25.00" }' # Response: # { "tx_hash": "0xabc...", "fee_usd": "0.02", "status": "confirmed" }

Arbitrum API in Practice

Real code for real agent use cases on Arbitrum One.

GMX Perpetual — Open Long Position

gmx-open-long.js
const response = await fetch( 'https://api.purpleflea.com/v1/defi/gmx/position', { method: 'POST', headers: { 'Authorization': 'Bearer pfk_...', 'Content-Type': 'application/json', }, body: JSON.stringify({ chain: 'arbitrum', wallet_id: 'wlt_...', market: 'ETH-USD', side: 'long', collateral_token: 'USDC', collateral_amount: '100', // $100 USDC leverage: 5, // 5x = $500 position slippage_bps: 50, // 0.5% max slippage }), } ); const position = await response.json(); // { // position_id: "pos_...", // entry_price: 3420.50, // size_usd: 500, // collateral_usd: 100, // liq_price: 2800.00, // tx_hash: "0xabc..." // }

Uniswap v3 — Swap ARB for USDC

swap-arb-usdc.js
const swap = await fetch( 'https://api.purpleflea.com/v1/defi/swap', { method: 'POST', headers: { 'Authorization': 'Bearer pfk_...', 'Content-Type': 'application/json', }, body: JSON.stringify({ chain: 'arbitrum', wallet_id: 'wlt_...', protocol: 'uniswap_v3', token_in: 'ARB', token_out: 'USDC', amount_in: '50', // sell 50 ARB slippage_bps: 30, // 0.3% tolerance }), } ); const result = await swap.json(); // { // amount_out: "33.72", // USDC received // price: 0.6744, // ARB/USDC price // fee_usd: 0.03, // tx_hash: "0xdef..." // }

GLP Staking — Mint and Earn Yield

glp-stake.js
// Mint GLP with USDC to earn GMX protocol fees const mint = await fetch( 'https://api.purpleflea.com/v1/defi/gmx/glp/mint', { method: 'POST', headers: { 'Authorization': 'Bearer pfk_...' }, body: JSON.stringify({ chain: 'arbitrum', wallet_id: 'wlt_...', token_in: 'USDC', amount: '200', // invest $200 USDC into GLP }), } ); // After minting, claim accumulated rewards const rewards = await fetch( 'https://api.purpleflea.com/v1/defi/gmx/glp/claim', { method: 'POST', headers: { 'Authorization': 'Bearer pfk_...' }, body: JSON.stringify({ chain: 'arbitrum', wallet_id: 'wlt_...', }), } ); // ETH rewards credited to wallet automatically

Cross-Chain Arbitrage Check

arb-cross-chain.js
// Compare ETH price on Arbitrum vs Ethereum mainnet const [arbPrice, ethPrice] = await Promise.all([ fetch('https://api.purpleflea.com/v1/prices/ETH?chain=arbitrum') .then(r => r.json()), fetch('https://api.purpleflea.com/v1/prices/ETH?chain=ethereum') .then(r => r.json()), ]); const spread = Math.abs(arbPrice.usd - ethPrice.usd); const spreadPct = (spread / ethPrice.usd) * 100; if (spreadPct > 0.15) { // Spread exceeds bridge cost — execute arb await executeBridgeArbitrage({ buyChain: arbPrice.usd < ethPrice.usd ? 'arbitrum' : 'ethereum', amount: '1.0', }); }

What AI Agents Build on Arbitrum

Common agent architectures powered by Arbitrum's cheap fees and deep DeFi ecosystem.

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High-Frequency Trading Agents

Sub-cent fees enable agents to trade frequently without fee drag. Run market-making, momentum, or mean-reversion strategies on GMX or Uniswap v3 with dozens of daily transactions.

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DeFi Yield Bots

Automate GLP staking, compound GMX esGMX rewards, and rebalance liquidity positions on Uniswap v3. Near-zero gas costs make frequent compound cycles economically viable.

Cross-Chain Arbitrage

Monitor ETH and token price spreads across Arbitrum, Ethereum mainnet, and other chains. When spreads exceed bridge costs, execute bridge arbitrage automatically.

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Agent Payment Rails

Use Arbitrum USDC for agent-to-agent micropayments. Sub-cent fees make splitting bills, paying for API access, and settling multi-agent workflows cost-effective.

Treasury Management

Hold USDC in Arbitrum for operational costs. Swap ARB rewards to stablecoins automatically. Bridge profits back to Ethereum mainnet for cold storage when balances grow.

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Funding Rate Arbitrage

Compare GMX perpetual funding rates against Hyperliquid and other venues in real time. Long on the cheaper side, short on the expensive side, collect the funding spread risk-free.


Arbitrum Token Support

All major Arbitrum tokens supported out of the box. Send, receive, and swap without manual contract addresses.

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USDC

Circle-native USDC on Arbitrum. The canonical stablecoin for agent treasuries and payments. Zero bridge risk compared to bridged USDC.e.

WETH

Wrapped ETH for DeFi interactions. Purple Flea wraps and unwraps automatically when interacting with Uniswap v3 and GMX pools.

ARB

Arbitrum's native governance token. Earned via DAO grants and ecosystem programs. Liquid on Uniswap v3 and tradeable via Purple Flea.

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GMX

GMX protocol governance token. Stake GMX to earn esGMX and ETH/AVAX fee distributions. Purple Flea supports full GMX staking lifecycle.

GLP

GMX liquidity provider token. Mint with USDC, ETH, or WBTC. Earns 70% of GMX protocol fees paid in ETH. Agents use GLP as passive yield strategy.

WBTC

Wrapped Bitcoin on Arbitrum. Deep GMX and Uniswap v3 pools. Used as collateral for BTC-denominated perpetual positions on GMX.

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LINK

Chainlink's oracle token. GMX uses Chainlink price feeds for settlement. LINK is available as a GMX perpetual market and on Uniswap v3.

Custom ERC-20

Any ERC-20 on Arbitrum is queryable by contract address. Check balance, send, or approve any token your agent needs to interact with.


Explore the Purple Flea Ecosystem


Start Building on Arbitrum

Register your agent, get an Arbitrum wallet, and make your first on-chain transaction in under five minutes. No KYC. No credit card. Just API calls.