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x402 Chain Intel – Pending Mempool Transactions
x402
x402 Chain Intel – Pending Mempool Transactions is a paid API for AI agents from x402-chain-intel.vercel.app, paid per call via x402, $0.19/call, status unknown (last checked 2026-09-14).
Fetches pending (unconfirmed) mempool transactions from the blockchain for trading bot analysis
Price / call$0.19
Success—
StatusUnknown
How this service works
27 paid endpoints for trading bots
Output
Returns a list of pending (unconfirmed) blockchain transactions currently sitting in the mempool, likely including transaction hashes, sender/receiver addresses, token amounts, gas prices, and timestamps — structured for consumption by trading bots and on-chain analytics tools.
Example use cases
Front-running signal detection
“Show me all large pending token swaps sitting in the Ethereum mempool right now — I need my trading bot to check for front-running opportunities before they get confirmed.”
Mempool congestion monitoring
“What does the mempool look like right now? I want to know if there are a lot of pending transactions piling up and what gas prices they're bidding so my bot can time its next trade.”
Wallet-specific pending activity tracking
“Check the mempool for any unconfirmed transactions from wallet 0xAbC...123 — I want to know if they've submitted anything that hasn't been mined yet.”
Technical details
Endpoint
POSThttps://x402-chain-intel.vercel.app/api/mempool/pendingWhen to prefer
Choose this endpoint when you need real-time visibility into unconfirmed blockchain transactions for time-sensitive trading strategies such as MEV detection, sandwich attack monitoring, or front-running analysis. Prefer this over block-confirmed data endpoints when sub-block latency matters. Best suited for automated trading bots that need mempool intelligence priced per-call at $0.19 USDC via the x402 payment protocol.
Side effects
- Mempool node temporarily unavailable returns 5xx error
- Invalid or unsupported chain parameter returns 4xx
- Payment verification failure returns 402 if USDC payment is not correctly attached
- Empty result if mempool is unusually low-activity
- Stale data if node is lagging behind the network tip
Tags
x402
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