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Tool Comparison

Base vs Arbitrum for x402 Agent Payments

Base and Arbitrum are both production-grade EVM L2s with native USDC. For x402 today, Base has the integration lead because Coinbase's CDP facilitator targets it as default.

Feature Base Arbitrum
Default for x402 SDKs Yes Winner No
Native USDC Yes Yes
Coinbase CDP facilitator support Yes Winner Yes (subset)
Block time ~2s ~250ms (with finality lag) Winner
Base Wins
2
Ties
1
Arbitrum Wins
1

Final Verdict

Default to Base for x402 today. Move multi-chain only when your agent population is concentrated elsewhere.

Why default-network matters

x402's discovery includes a `default_network`. Servers that pick Base inherit the largest pre-funded agent wallet population.

Pro Tips

Servers can declare multiple supported networks; defaulting to Base is still the right primary choice.
Related Resources
Browse x402 Agent Payments Blog Ideas Browse USDC on Base for AI Blog Ideas Browse x402 Facilitators Blog Ideas Compare: USDC vs PYUSD Compare: USDC vs EURC
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x402 Agent Payments x402 Facilitators Agent Micropayments USDC on Base for AI Coinbase Bazaar Listings MCP Tool Marketplaces Agent-to-Agent Commerce Agent Trust & Reputation Agent Payment Protocols Autonomous Agent Billing Crypto Rails for AI
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x402 Agent Payments x402 Facilitators Agent Micropayments USDC on Base for AI Coinbase Bazaar Listings MCP Tool Marketplaces Agent-to-Agent Commerce Agent Trust & Reputation Agent Payment Protocols Autonomous Agent Billing Crypto Rails for AI
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