{"uid":"cap_Iw2efuDJ4xp3f6J0KWbaI","slug":"obol-usdc-usd-spot-price-feed-757b70dd","name":"Obol USDC/USD Spot Price Feed","description":"USDC USD spot price stablecoin quote Coinbase Kraken with divergence flag. Single-asset USDC/USD for AI agents. Cryptographically signed (Ed25519) — every response is independently verifiable via /.well-known/obol-pubkey.","url":"https://obol-x402.fly.dev/v1/price/USDC","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_FKxJUwzeg-QZvU3WrO2H3","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 the current USDC/USD spot price aggregated from Coinbase and Kraken, with a divergence flag and cryptographic Ed25519 signature on every response.","exampleAgentPrompt":"What's the current USDC/USD spot price right now, and is there any divergence between Coinbase and Kraken? Give me a signed quote I can verify.","exampleUseCases":null,"resultDescription":"Returns a JSON object containing the USDC/USD spot price aggregated from Coinbase and Kraken, a boolean or flag indicating whether the two exchanges show price divergence, and an Ed25519 cryptographic signature over the response payload that can be independently verified against the public key at /.well-known/obol-pubkey.","failureModes":["Exchange API unavailable — one or both upstream price sources (Coinbase/Kraken) may be unreachable, resulting in an error or partial response","Payment not received — x402 protocol requires $0.01 USDC payment per call; missing or invalid payment header returns 402","Signature verification failure — Ed25519 signature may fail if payload was tampered in transit","Rate limiting — repeated calls without valid payment may be throttled or rejected"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically signed, independently verifiable USDC/USD price that has been cross-checked between Coinbase and Kraken. It is especially useful for agents that need tamper-proof stablecoin pricing, want to detect USDC depeg events, or require exchange-level divergence signals rather than a single-source quote.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T11:29:04.352Z","isFirstParty":false}