For AI agents · Arc and X1

AI agents: get onto Arc and X1, get paid data, get an identity.

One page for both chains. What you can do here, what it costs, and where to start.

Connect our MCP All paid tools

MCP endpoint: https://apexfaucet.xyz/api/mcp

Arc

On Arc

On Arc, USDC is the gas token.

  • USDC faucet Free USDC for gas on Arc mainnet. Paste an address; nothing to connect, nothing to sign. Three claims a day, 8 hours apart, paid from a contract anyone can read.
  • Arc Agent Passport An ERC-8004 identity handed to your own wallet, a correct registration file, an hourly check-up and a tower in Arc City. $0.99, paid on chain from your wallet or by an agent over x402.
  • Agent screener and Watchtower Every agent in Arc's ERC-8004 registry, with every endpoint it lists called once an hour: uptime, response times, whether its paywall offers Arc payment.
  • Launch feed with sell and bundle verdicts New Arc token launches in real time, each with a simulated sell test and a bundle verdict. $0.003 a call. GET /api/x402/arc-fresh · price list
  • Gold check Is a gold token on Arc the real one, and where can you sell it? Read from the chain every hour. Agents get every pool and its round trip as JSON, $0.003 a call.

X1

On X1

X1 is a Solana fork. Its gas token is XNT.

  • X1 Agent Faucet First gas on X1 for an agent already registered in the ERC-8004 identity registry on Arc or Base: 0.01 XNT, once per registration and once per X1 wallet. Free.
    • the registration is at least 7 days old (read on chain)
    • the signer is the registration's owner or its agentWallet (read on chain)
    • the X1 wallet holds no XNT yet and is a plain wallet
    • at most 20 claims a day
  • X1 Agent Registry ERC-8004 identity for agents on X1: the Solana Agent Registry, deployed on X1. Anyone registers their own agent; no approval, no fees to us.
  • The X1 agent economy Agents query on-chain data, pay each other in crypto via x402, and sell services, through MCP.
  • Arrive on X1 from any chain Come with whatever you already hold. Four steps, every address verified on chain.
  • The free faucet for people Free APEX, three times a day.

How agents pay

x402, per call

Prices are set in US dollars. Pay in USDC on Arc, Base or Solana, or in XNT on X1 at the live rate. No account, no API key, no subscription.

A few tools take one rail only; the 402 says which. A call we refuse before payment (bad input, nothing found) charges nothing.

Circle Gateway balance

Every paid endpoint's 402 also offers GatewayWalletBatched on Arc and Base: the way Circle's own agent client pays, gas-free for the buyer.

The $5 card pass

No crypto wallet needed. Pay $5 by card (tax included) at /pass/ and get a key worth $5 of calls at list prices. Send it in the X-APEX-PASS header.

The balance does not expire, and a call we fail to answer is not charged. The Arc and X1 agent passports need an on-chain payment and are not sold against a pass.

curl -H "X-APEX-PASS: apx_your_key" "https://apexfaucet.xyz/api/x402/arc-fresh?limit=5"

For developers

/llms.txt
The plain-text map of everything we run.
/.well-known/x402
Every paid endpoint and its price, machine-readable.
/openapi.json
The same endpoints as an OpenAPI 3.1 description.
/api/mcp
The MCP server.
/proof/
Who really pays us: outside payers counted with every wallet of ours excluded, customers apart from monitoring services.
GitHub
Open source (MIT): an agent that runs a business's money on Arc inside written limits.

Nothing here is advice. The 402 response of each call states exactly what that call costs.