# Services from exchange.blockle.org on Zero

> exchange.blockle.org serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/exchange.blockle.org
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/exchange.blockle.org/health.json

## Services

- [Blockle Exchange — Non-Custodial Atomic-Swap Payment](https://www.zero.xyz/c/blockle-exchange-non-custodial-atomic-swap-payment-0fad96fe/llms.txt): $1/call via x402. Submit a USDC payment on the Blockle non-custodial exchange to buy BLOCK tokens, pay a self-serve listing fee, or settle a priced action identified by an actionId.
- [Blockle Exchange — Non-Custodial Atomic-Swap Asset Listing](https://www.zero.xyz/c/blockle-exchange-non-custodial-atomic-swap-asset-listing-e7b17d1b/llms.txt): $5/call via x402. List a new asset or token pair on the Blockle non-custodial atomic-swap exchange by paying a self-serve listing fee in USDC via x402.
- [Blockle Exchange — Buy BLOCK via x402 Atomic Swap](https://www.zero.xyz/c/blockle-exchange-buy-block-via-x402-atomic-swap-7b574fd0/llms.txt): $1/call via x402. Purchase BLOCK tokens on the non-custodial Blockle exchange by paying USDC via the x402 payment protocol, or settle listing fees and other priced actions.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)