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ChainRay Mempool Stream
x402
ChainRay Mempool Stream is a paid API for AI agents from chainray.online, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-13).
Streams real-time pending transactions from a blockchain mempool for a specified chain
Price / call$0.08
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
A real-time stream of pending (unconfirmed) transactions in the mempool of the specified blockchain network, including transaction details such as sender, receiver, value, gas price, and data payload.
Example use cases
Detect front-running opportunities in real time
“Watch the mempool on Ethereum and alert me whenever you spot large pending swaps or token transfers that could be front-run for profit.”
Monitor DeFi liquidation cascade risks
“Stream pending transactions across Polygon and Base simultaneously so you can catch liquidation events before they hit the blockchain and warn me about cascading risks.”
Track MEV activity across multiple chains
“Give me a live view of pending transactions on Ethereum and Arbitrum so I can see which transactions have high MEV exposure and understand the current network congestion.”
Technical details
Endpoint
GEThttps://chainray.online/stream/mempoolWhen to prefer
Use this endpoint when you need real-time visibility into unconfirmed transactions before they are included in a block — ideal for MEV detection, front-running protection, DeFi arbitrage monitoring, or any use case requiring sub-block-time transaction awareness across 46 supported chains.
Side effects
- Unsupported chain specified — returns error indicating chain is not available
- Missing chain parameter — may default to a chain or return a validation error
- Payment not processed — 402 response requiring x402 USDC payment
- Network connectivity issues causing stream interruption
- Rate limiting if too many simultaneous streams are opened
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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