{"uid":"cap_BzSwgUVY5kdcDTglJg8Pa","slug":"pulse-verity-x402-signed-crypto-price-feed-1079c730","name":"Pulse Verity x402 Signed Crypto Price Feed","description":"Signed crypto prices from the Pulse Verity Index, paid per request in USDC with x402, with no account or API key. Each price is a multi-exchange US dollar price signed with ECDSA P-256, and its signature can be checked offline against the public keys Pulse publishes.","url":"https://mcp.thepulse.markets/api/index/v1/x402/price?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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["symbol"],"properties":{"symbol":{"type":"string","description":"Crypto ticker, for example BTC"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["symbol","price","at","signature","kid"],"properties":{"at":{"type":"string","description":"ISO 8601 time of the price"},"v2":{"type":"object","description":"Signature over the whole record: sig, canonical, signature, kid"},"kid":{"type":"string","description":"Signing key id"},"sig":{"type":"string"},"grade":{"type":"string"},"price":{"type":"number","description":"The price in US dollars"},"symbol":{"type":"string","description":"The ticker, for example BTC"},"priceText":{"type":"string","description":"The price as signed, as text"},"signature":{"type":"string","description":"Signature over the print, checkable against the public keys Pulse publishes"},"confidence":{"type":"number"}}}}}}},"responseSchema":{"type":"json","example":{"at":"2026-10-17T20:00:00.000Z","v2":{"kid":"<signing key id>","sig":"pulse-index-v2","canonical":"<the exact signed text>","signature":"<base64 signature>"},"kid":"<signing key id>","sig":"pulse-index-v1","grade":"consensus","price":65000.12,"symbol":"BTC","priceText":"65000.12","signature":"<base64 signature>","confidence":0.91}},"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":"unknown","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_z3COqXD6ByTKE_Qh-XQyq","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 a cryptographically signed, multi-exchange USD price for a given cryptocurrency ticker, paid per-request in USDC via x402 with no API key required.","exampleAgentPrompt":"What's the current Pulse Verity signed price of BTC right now? I need the ECDSA signature too so I can verify it offline.","exampleUseCases":[{"title":"Verifiable trade price audit trail","prompt":"Fetch me a cryptographically signed BTC price from Pulse Verity right now — I need the signature and key ID so I can verify the price was correct at execution time for our trade audit log."},{"title":"DeFi smart contract price assertion","prompt":"Get me the Pulse Verity signed ETH price in USD with its ECDSA signature and timestamp — our on-chain contract needs to verify the price offline before settling."},{"title":"Real-time crypto dashboard with trust scores","prompt":"Pull the latest Pulse Verity price for SOL including the confidence score and grade — I want to show the consensus multi-exchange price on our dashboard and flag anything below high confidence."}],"resultDescription":"A JSON object containing the ticker symbol, USD price as a number and text string, ISO 8601 timestamp, an ECDSA P-256 signature (v1 and v2), a signing key ID, a confidence score (0–1), and a grade (e.g. 'consensus') — all verifiable offline against Pulse's published public keys.","failureModes":["Unsupported ticker symbol returns an error — only symbols listed in the Pulse Verity Index are valid","Payment failure via x402 if the wallet has insufficient USDC or the payment flow is not completed","Network timeout or service unavailability returns no data","Stale or unavailable exchange data may lower confidence score or prevent a response","Invalid query parameter format (e.g. missing symbol) returns a 400-level error"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically verifiable, multi-exchange consensus crypto price that can be audited or validated offline without trusting the delivery channel — especially when no persistent API key or account setup is acceptable and pay-per-request micropayment billing in USDC is preferred. It is ideal for audit trails, smart contract price assertions, compliance workflows, or any context where tamper-evidence of the price matters more than raw speed or volume.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:00:19.600Z","isFirstParty":false,"canonicalSlug":"pulse-verity-x402-signed-crypto-price-feed-1079c730"}