{"uid":"cap_nx21u1utO1NTWE_PMOjO6","slug":"nomos-service-health-check-f2d8a9f5","name":"Nomos Service Health Check","description":"Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.","url":"https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health","method":"POST","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":["POST"],"type":"string"},"queryParams":{"type":"object","required":["target_url"],"properties":{"target_url":{"type":"string","maxLength":500,"minLength":8},"expected_asset":{"type":"string","maxLength":20,"minLength":2},"idempotency_key":{"type":"string","maxLength":128},"expected_network":{"type":"string","maxLength":80,"minLength":2}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"network":{"type":"string"},"product":{"type":"string"},"activity":{"type":"object"},"identity":{"type":"object"},"assessment":{"type":"object"},"provenance":{"type":"object"}}}}}}},"responseSchema":{"type":"json","example":{"network":"eip155:8453","product":"nomos-service-health","assessment":{"flags":[],"risk_level":"low","risk_score":0}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LwvzVIjGTVlAXBZGHGGmW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks the health and operational status of a target Nomos Agent Intelligence service endpoint, returning network, product, and risk assessment metadata.","exampleAgentPrompt":"Can you run a health check on the Nomos agent preflight service at https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health and tell me its current risk level and whether it's operational?","exampleUseCases":[{"title":"Pre-execution agent service verification","prompt":"Before my agent calls the Nomos identity API, can you check that the service at https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health is healthy and the risk score is low?"},{"title":"Monitoring agent API uptime","prompt":"I want to know if the Nomos preflight service is currently up and operational — can you probe https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health and report back on the network, product name, and any risk flags?"},{"title":"Validating service before USDC payment","prompt":"Check the health of this agent service endpoint before I authorize a USDC payment to it — target URL is https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health on the eip155:8453 network."}],"resultDescription":"Returns a JSON object containing the network identifier (e.g. eip155:8453), the product name (e.g. nomos-service-health), and an assessment object with risk_level (e.g. 'low'), risk_score (numeric), and a flags array indicating any issues detected.","failureModes":["Invalid or unreachable target_url returns an error or non-healthy status","Malformed request schema (missing required 'type' or 'method' fields) results in a 4xx error","Payment not provided or insufficient USDC triggers a 402 Payment Required response","target_url exceeding 500 characters or below 8 characters fails schema validation","Network mismatch between expected_network and actual service network may return elevated risk flags"],"whenToPreferThis":"Use this endpoint when you need to verify the operational health and risk posture of a Nomos agent service URL before committing resources or executing a paid agent workflow. It is specifically suited for pre-flight validation in autonomous agent pipelines that use x402 pay-per-request patterns on Base/EVM networks, and is preferable to generic HTTP ping checks because it returns structured risk assessments, network context, and product metadata.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:45:27.395Z","isFirstParty":false}