{"uid":"cap_FYqgnDtrSxMAk9PGncotP","slug":"x402-price-drift-scanner-7ecbf378","name":"x402 Price Drift Scanner","description":"Seven account-free paid tools for source integrity, x402 catalog search, preflight, liveness, routing, price drift, and batch verification.","url":"https://bj7e26lfpo4fthvr35hczdipby.srv.us/v1/x402-drift","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","properties":{"limit":{"type":"string","description":"Max rows, 1-200, default 50"},"direction":{"enum":["underquoted_by_catalog","overquoted_by_catalog"],"type":"string","description":"Filter by drift direction"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"results":[{"resource":"https://api.justaname.id/ens/v2/resolve","direction":"underquoted_by_catalog","drift_pct":400,"consequence":"a payment sized from the catalog listing will be rejected as insufficient","live_price_usdc":0.005,"catalog_price_usdc":0.001}],"driftVersion":"1.0","total_drifted":9,"overquoted_by_catalog":4,"underquoted_by_catalog":5}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SLV83K7_99uXjiYXpuaa0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Detects and reports discrepancies between x402 catalog-listed prices and live endpoint prices, flagging underquoted and overquoted resources.","exampleAgentPrompt":"Show me up to 100 x402 endpoints where the live price differs from the catalog listing, filtered to only those where the catalog is underquoting — so I know which ones would get my payments rejected.","exampleUseCases":[{"title":"Pre-flight payment budget audit","prompt":"Before my agent loop starts making x402 calls, pull up to 50 underquoted endpoints from the drift scanner so I can see which ones would reject my payments as insufficient and update my payment sizing accordingly."},{"title":"Catalog overpayment check for cost optimization","prompt":"Show me x402 endpoints flagged as overquoted by the catalog — up to 200 results — so I can identify where I'm burning more USDC than necessary and recalibrate my payment amounts."},{"title":"Routine catalog freshness monitoring","prompt":"Give me a full drift report across both directions — overquoted and underquoted — with up to 200 results, so I can see how many x402 catalog prices have gone stale since the last sync."}],"resultDescription":"A JSON object containing a list of drifted resources, each with the resource URL, drift direction (underquoted_by_catalog or overquoted_by_catalog), drift percentage, live price in USDC, catalog price in USDC, and a human-readable consequence string. Also includes summary counts: total_drifted, overquoted_by_catalog, underquoted_by_catalog, and a driftVersion identifier.","failureModes":["Invalid direction enum value returns 400 error","Limit out of range (below 1 or above 200) returns validation error","Upstream catalog or liveness check unavailable causes 503 or empty results","No drifted endpoints found returns empty results array with zero counts"],"whenToPreferThis":"Use this endpoint when an agent needs to verify that x402 payment amounts derived from catalog listings are still accurate before executing payments, or when auditing the x402 catalog for stale pricing data. It is the only purpose-built tool for cross-referencing live x402 endpoint prices against catalog-listed prices and quantifying the gap.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:26:15.083Z","isFirstParty":false}