{"uid":"cap_T-2JT7kBF366Rj_TMXJSR","slug":"quietsignal-l2beat-discovery-feed-e681c560","name":"QuietSignal L2Beat Discovery Feed","description":"QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.","url":"https://83-29-153-50.sslip.io/v1/l2beat-discovery?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"limit":{"type":"integer","maximum":100,"minimum":1,"description":"Maximum number of update records to return"},"project":{"type":"string","maxLength":80,"minLength":1,"description":"Optional case-insensitive project-name filter"},"severity":{"enum":["high","medium","normal"],"type":"string","description":"Optional severity filter"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"schema":"l2beat-discovery/v1","projects":[{"name":"BASE","group":"OP Stack","event_id":"evt_0123456789abcdef012345678","severity":"high","component":"OptimismPortal","diff_urls":["https://disco.l2beat.com/diff/example"],"observed_at":"2026-08-04T00:00:00Z"}],"disclaimer":"Public third-party update facts; verify independently. The current upstream terms do not expressly grant a commercial redistribution license; confirm commercial rights independently before scaling.","project_count":0}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_FoyOUBhUGLQ3kC_4vVhgg","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns recent L2Beat smart-contract discovery update records, filterable by project name and severity, for Layer 2 blockchain monitoring.","exampleAgentPrompt":"Can you pull the latest L2Beat discovery updates for the BASE project, filtered to high severity only, and show me up to 10 records?","exampleUseCases":[{"title":"Alert on critical L2 contract changes","prompt":"Check the L2Beat discovery feed for any high severity contract changes on Base in the last batch and tell me which components were affected."},{"title":"Monitor OP Stack project updates","prompt":"Fetch me the most recent discovery updates for OP Stack projects with at least medium severity — I want to see up to 20 records so I can review recent changes."},{"title":"Developer due diligence on rollup config","prompt":"Pull the L2Beat discovery diff records for the Arbitrum project so I can see what smart contract configuration changes have been detected recently."}],"resultDescription":"A JSON object containing a schema identifier, a list of discovery update records (each with project name, group, event ID, severity level, affected component, diff URLs, and observation timestamp), a disclaimer about data provenance, and a count of matched projects.","failureModes":["Invalid severity enum value returns a validation error","Project name not found returns an empty projects array","Limit parameter outside 1-100 range is rejected with a schema validation error","Payment not provided or insufficient USDC results in HTTP 402 response","Upstream L2Beat data unavailable may return stale or empty results"],"whenToPreferThis":"Use this endpoint when you need structured, machine-readable L2Beat discovery update records for Layer 2 smart contract monitoring, particularly when you want to filter by specific project name or severity level and pay per-call with USDC via HTTP 402. Prefer this over scraping L2Beat directly when you need a reliable, agent-friendly API with a stable schema.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T23:28:12.178Z","isFirstParty":false,"canonicalSlug":"quietsignal-l2beat-discovery-feed-e681c560"}