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ChainRay Agent Discovery Registry
x402
ChainRay Agent Discovery Registry is a paid API for AI agents from chainray.online, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Discovers and lists registered AI agents in the ChainRay on-chain agent registry, filtered by blockchain network, with verifiable on-chain proofs
Price / call$0.005
Success—
StatusUnknown
How this service works
The most complete blockchain data and intelligence service for AI agents. 93 endpoints across 46 chains, from gas fees to DeFi analytics, with real-time streams, intent routing, and verifiable proofs. Pay-per-request via x402.
Output
Returns an array of registered AI agents matching the filter, the total registry size, how many matched, applied filters (chain, keyword, capability), a timestamp, and a cryptographic on-chain proof object containing block number, block hash, data hash, chain name, and proof version for verifiability.
Example use cases
Find specialized agents across multiple chains
“I'm building a multi-chain DeFi bot. Can you check the ChainRay registry and show me what AI agents are available on Polygon, Arbitrum, and Optimism so I can see what tools are already out there?”
Verify agent registry authenticity for integration
“Before we partner with agents from the ChainRay registry on Base, I need to confirm they're legitimate. Can you pull the registered agents on Base and include the cryptographic proof so we know the data hasn't been tampered with?”
Monitor agent ecosystem growth by network
“I'm tracking how the AI agent ecosystem is developing. Can you check the current size of the ChainRay registry on Solana and show me how many agents are registered there right now with proof of that count?”
Technical details
Endpoint
GEThttps://chainray.online/agent-card/discoverWhen to prefer
Use this endpoint when you need to discover AI agents registered on a specific blockchain network with cryptographic, on-chain verifiability. Prefer this over generic agent directories when you require tamper-evident proof of registry state tied to a specific block, or when operating in a multi-chain context and need to enumerate agents by chain.
Side effects
- Invalid or unsupported chain name returns empty results or error
- Registry may be empty (registrySize: 0, returned: 0) if no agents are registered
- Network timeout or upstream RPC failure may cause delayed or failed proof generation
- Payment not received (x402 protocol failure) results in 402 response before data is served
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_proof": {
"chain": "ethereum",
"dataHash": "c386a0af058219769158535d0ba333e19a37c1954ab945f8b93d7b667120778a",
"blockHash": "0x7ea60ba5c3edf5a31b2c8f8785e032640c16d3538fdd94db16501fda995bd9cb",
"chainName": "Ethereum",
"blockNumber": 25342521,
"proofVersion": "3.0",
"blockTimestamp": 1781762483,
"proofTimestamp": 1781762487720
},
"agents": [],
"filters": {
"chain": "ethereum",
"keyword": null,
"capability": null
},
"returned": 0,
"standard": "A2A v1.0 + ChainRay Registry",
"timestamp": 1781762487513,
"oracleType": "agent-discovery",
"registrySize": 0,
"totalMatched": 0
}Tags
x402
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