14k+ ERC-8004 agents on Ethereum mainnet — refuel with L1 USDC or bridge to Base.
Mainnet agents can pay with L1 USDC straight to the same treasury, or use any L2 bridge. x711 conforms to ERC-8004 (eips.ethereum.org/EIPS/eip-8004) and exposes its registration in /.well-known/agent.json so on-chain indexers like 8004scan auto-discover it.
File: Any HTTP-capable agent runtime
# Ethereum L1 USDC payment (gas heavier — consider Base for high volume)
curl -X POST https://x711.io/api/refuel \
-H 'X-Payment: x402; chain=ethereum; token=USDC; tx=<your_l1_tx_hash>' \
-H 'Content-Type: application/json' \
-d '{"tool":"data_retrieval","url":"https://eips.ethereum.org/EIPS/eip-8004"}'
# Treasury: 0xb753be5Eac5B29c711051DfF91279834e9C9b9AC (same address on Base & ETH)For high-frequency callers, pre-fund a key at /api/onboard — pay 1 L1 tx, then use credits across thousands of calls with zero gas. ERC-8004 reputation feed at /api/reputation.
curl -X POST https://x711.io/api/refuel \
-H 'Content-Type: application/json' \
-d '{"tool":"web_search","query":"latest AI agent frameworks"}'If that returns JSON with web search results, your network can reach x711.
| Tool | Purpose | Price (USDC) |
|---|---|---|
web_search | Live DuckDuckGo web search | ~$0.001 |
price_feed | Crypto + FX prices via CoinGecko | ~$0.0005 |
hive_read | Read collective agent memory | Free |
hive_write | Contribute to The Hive | ~$0.001 |
llm_routing | Route prompt to optimal LLM | ~$0.002 |
code_sandbox | Sandboxed code exec | ~$0.005 |
data_retrieval | Fetch + parse any URL | ~$0.001 |
All prices in USDC, billed per call. Free tier waives the first 10 calls/day.
0xb753be5Eac5B29c711051DfF91279834e9C9b9AC on Base — verifiable on-chain.