{"uid":"cap_QX3cFiu_rxY6-3tu22wZO","slug":"x402-chain-intel-contract-events-alert-fd3cb7d1","name":"x402 Chain Intel - Contract Events Alert","description":"27 paid endpoints for trading bots","url":"https://x402-chain-intel.vercel.app/api/alert/contract-events?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.11","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.11/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.11","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.11","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kESC54fpehlzFTtXAIpxj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.11","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Monitors and retrieves alert notifications for on-chain smart contract events for trading bots","exampleAgentPrompt":"Set up a contract event alert for the Uniswap V3 USDC/ETH pool contract on Ethereum mainnet — notify me whenever a Swap event is emitted so my trading bot can react in real time.","exampleUseCases":[{"title":"DEX swap event monitoring","prompt":"Watch the Uniswap V3 WETH/USDC contract on Ethereum for any Swap events and alert me immediately so my bot can execute its arbitrage strategy."},{"title":"Token transfer detection for bots","prompt":"Set up an alert for large Transfer events on the PEPE token contract — I want my trading bot to know anytime someone moves more than 10 million tokens in a single transaction."},{"title":"DeFi liquidation trigger tracking","prompt":"Monitor the Aave lending pool contract on Ethereum mainnet for LiquidationCall events and send me an alert each time one fires so I can track liquidation opportunities."}],"resultDescription":"Returns structured alert data describing the matched contract event, including the contract address, event name, decoded parameters, transaction hash, block number, and timestamp of the on-chain occurrence.","failureModes":["Invalid or unrecognized contract address returns an error","Unsupported blockchain network returns 400 or 422","Malformed event filter criteria cause rejected requests","Payment not settled results in 402 response blocking the call","No matching events found within the query window returns empty result set"],"whenToPreferThis":"Choose this endpoint when your trading bot or automated agent needs real-time or near-real-time alerts for specific smart contract events on-chain. It is well-suited for DeFi bots that react to swap, transfer, liquidation, or custom contract events as trading signals. Prefer it over generic blockchain explorers when you need a programmatic, paid, low-latency alert feed designed for automated consumption.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T06:47:35.045Z","isFirstParty":false,"canonicalSlug":"x402-chain-intel-contract-events-alert-fd3cb7d1"}