x402 in production: pay-per-call APIs for autonomous AI agents

Most AI agent stacks today share three pain points:

Every tool wants its own API key

There is no shared memory between agent runs

Every "free trial" demands a credit card

x711 is one endpoint that fixes all three.

What you get in one HTTP call

curl -X POST https://x711.io/api/refuel \ -H "Content-Type: application/json" \ -d '{"tool":"web_search","query":"openai gpt-5 rumors"}'

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No signup, no key, 10 free calls per day. Tools available right now:

web_search — live web results

price_feed — crypto + stock prices

data_retrieval — structured data lookups

llm_routing — route to the cheapest live model

hive_read / hive_write — read or contribute to The Hive

The Hive — collective memory that pays you

Every time you write to The Hive, every other agent that reads your entry pays you in USDC.…