{"id":"a5621ba6-ce38-45e3-8a99-cc1c594f44d0","shortId":"XWSFpX","kind":"x402","title":"Oracle dependency risk assessment for DeFi protocols, paid per call via x402 on Base.","tagline":"Oracle dependency risk assessment for DeFi protocols, paid per call via x402 on Base.","description":"The `/api/protocol/oracle-risk` endpoint is part of DeFi Shield, a suite of 69 paid API endpoints providing security intelligence for autonomous AI agents. This specific endpoint performs oracle dependency risk assessment for DeFi protocols — evaluating how reliant a protocol is on external price oracles and the associated risks (e.g., oracle manipulation, single points of failure, staleness).\n\nPayment is handled via the x402 protocol using USDC on Base at $0.50 per request. Agents send a POST request with an x402 payment header, the facilitator verifies the USDC payment on-chain, and the endpoint returns a JSON response. Payment settles only on a successful response. The endpoint supports free GET-based discovery that returns metadata and an `llm_usage_prompt` describing expected inputs and outputs.\n\nDeFi Shield is hosted on Vercel and provides additional discovery mechanisms including a health endpoint (`/api/health`) listing all endpoints and pricing, an analytics endpoint (`/api/analytics`), and an A2A agent card at `/.well-known/agent-card.json`. No OpenAPI schema or detailed documentation page was found during crawling, so the exact request/response schema for this endpoint is not confirmed. Based on the pattern of sibling endpoints, the request likely accepts a protocol name or identifier and returns a risk assessment object.","tags":[],"capabilities":["oracle-risk-assessment","defi-protocol-analysis","x402-payment","usdc-base-settlement","agent-to-agent-api","pay-per-request"],"categories":["defi","security"],"synonyms":["oracle manipulation risk","price feed risk","chainlink dependency","oracle security","DeFi oracle audit","price oracle vulnerability","protocol oracle analysis"],"warnings":["No OpenAPI or schema documentation found — request/response format is inferred","x402 challenge object was empty; payment parameters (asset, amount, network) not independently verified from probe","No /docs page exists (returns 404); endpoint behavior details are based solely on the landing page description","Example request JSON is speculative based on sibling endpoint patterns"],"endpointUrl":"https://defi-shield-hazel.vercel.app/api/protocol/oracle-risk","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x0814d35F25F2EF3Dffa4aEF4d137558D5E51Ed7b","amount":"500000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is confirmed live (402 on POST), and the landing page provides clear pricing ($0.50) and category context. However, no OpenAPI schema, detailed docs, or example responses were found. The request/response format is inferred from sibling endpoint patterns. The x402 challenge object was empty, so payment details (asset, network, amount) could not be independently verified from the 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'/api/analytics':177 '/api/health':168 '/api/protocol/oracle-risk':30 '0.50':96 '69':40 'DeFi oracle audit' 'a2a':180 'accept':217 'addit':161 'agent':50,99,181 'agent-to-agent-api' 'ai':49 'analyt':175 'api':42 'assess':4,18,58,227 'associ':74 'autonom':48 'base':14,28,94,138,207 'call':10,24 'card':182 'chain':117 'chainlink dependency' 'confirm':206 'crawl':195 'defi':6,20,35,60,153 'defi-protocol-analysis' 'depend':2,16,56 'describ':148 'detail':189 'discoveri':139,162 'document':190 'e.g':76 'endpoint':31,43,53,120,133,167,171,176,203,213 'evalu':62 'exact':198 'expect':149 'extern':69 'facilit':110 'failur':82 'found':193 'free':135 'get':137 'get-bas':136 'handl':86 'header':108 'health':166 'host':156 'identifi':222 'includ':164 'input':150 'intellig':46 'json':123 'like':216 'list':169 'llm':145 'manipul':78 'mechan':163 'metadata':142 'name':220 'object':228 'on-chain':115 'openapi':186 'oracl':1,15,55,71,77 'oracle manipulation risk' 'oracle security' 'oracle-risk-assessment' 'output':152 'page':191 'paid':8,22,41 'part':33 'pattern':210 'pay-per-request' 'payment':84,107,114,125 'per':9,23,97 'perform':54 'point':80 'post':102 'price':70,173 'price feed risk' 'price oracle vulnerability' 'prompt':147 'protocol':7,21,61,66,90,219 'protocol oracle analysis' 'provid':44,160 'reliant':64 'request':98,103,215 'request/response':199 'respons':124,131 'return':121,141,224 'risk':3,17,57,75,226 'schema':187,200 'secur':45 'send':100 'settl':126 'shield':36,154 'sibl':212 'singl':79 'specif':52 'stale':83 'success':130 'suit':38 'support':134 'usag':146 'usdc':92,113 'usdc-base-settlement' 'use':91 'vercel':158 'verifi':111 'via':11,25,87 'x402':12,26,89,106 'x402-payment'","prices":[{"id":"e06269c1-63bc-4cf2-989d-5bcc2f18c386","listingId":"a5621ba6-ce38-45e3-8a99-cc1c594f44d0","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x0814d35F25F2EF3Dffa4aEF4d137558D5E51Ed7b","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x0814d35F25F2EF3Dffa4aEF4d137558D5E51Ed7b","amount":"500000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:41.107Z"}],"sources":[{"listingId":"a5621ba6-ce38-45e3-8a99-cc1c594f44d0","source":"x402_bazaar","sourceId":"https://defi-shield-hazel.vercel.app/api/protocol/oracle-risk","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:41.107Z","lastSeenAt":"2026-04-22T05:32:34.001Z"}],"details":{"listingId":"a5621ba6-ce38-45e3-8a99-cc1c594f44d0","quickStartSnippet":"# Free discovery (GET returns metadata + llm_usage_prompt)\ncurl https://defi-shield-hazel.vercel.app/api/protocol/oracle-risk\n\n# Paid request (requires x402 payment header)\ncurl -X POST https://defi-shield-hazel.vercel.app/api/protocol/oracle-risk \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{\"protocol\": \"aave\"}'","exampleRequest":{"protocol":"aave"},"exampleResponse":null,"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Oracle dependency risk assessment endpoint priced at $0.50 per call","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"69 paid API endpoints selling security intelligence to autonomous AI agents, pay per request with USDC via x402 protocol on Base","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Every endpoint supports free GET-based discovery with llm_usage_prompt","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Payment settles only on successful response","source_url":"https://defi-shield-hazel.vercel.app"},{"claim":"Discovery available at /.well-known/agent-card.json and /api/health","source_url":"https://defi-shield-hazel.vercel.app"}],"useCases":["Assess oracle dependency risk before depositing into a DeFi protocol","Evaluate whether a protocol's price feeds are vulnerable to manipulation","Compare oracle risk across multiple protocols as part of due diligence","Automated agent screening of protocol safety before executing trades","Portfolio risk monitoring for oracle-related vulnerabilities"],"bestFor":["AI agents performing autonomous DeFi investment decisions","Risk analysts evaluating protocol oracle dependencies","DeFi portfolio managers monitoring oracle-related exposure","Developers building automated protocol safety checks"],"notFor":["Real-time oracle price data feeds (this assesses risk, not prices)","Non-DeFi oracle use cases (e.g., general data feed monitoring)","Users who need free unlimited access without crypto payment"],"kindDetails":{},"updatedAt":"2026-04-22T02:53:12.477Z"}}