AI Agents

Add Across to your agent with one command

npx skills add https://github.com/across-protocol/skills --yes

Compatible with Claude Code, Codex, Cursor, Openclaw, and more.

Connect to the Across MCP Server

https://mcp.across.to/mcp

Add this URL to any MCP-compatible client — Claude Desktop, Claude Code, Cursor, VS Code Copilot, Windsurf, Codex.

What your agent gets

Once installed, your AI agent can:

• Bridge tokens across 24+ chains with natural language commands
• Get live quotes — fees, estimated fill times, and optimal routes
• Execute crosschain swaps — USDC, USDT, WETH, and more
• Track deposits — check fill status and confirmations in real time
• Compose embedded actions — bridge + swap + deposit into DeFi in one transaction

Supported Agents

Two ways to connect

Use both together or pick whichever fits your workflow.

Supported Chains

Across currently supports 24+ mainnet chains — including Ethereum, Arbitrum, Optimism, Base, Polygon, Unichain, and other major L2s.

For the canonical list with contract addresses and explorer links, see the Chains & Contracts page. For the live machine-readable list, query the /swap/chains endpoint.

How it works

The skills package provides your agent with structured tool definitions that map directly to the Across Swap API. Your agent receives:

1. Chain discovery — query supported chains and tokens
2. Quote generation — get executable calldata for any crosschain transfer
3. Transaction execution — approval and bridge transaction helpers
4. Status tracking — monitor deposits until they're filled

The agent handles the entire flow autonomously — from selecting the right route to executing the transaction.

Example prompt

Once the skill is installed, you can simply tell your agent:

Bridge 100 USDC from Arbitrum to Base

The agent will discover chains, look up token addresses, fetch a quote, handle approvals, and execute the bridge — all without any additional code.

Explore