{"uid":"cap_22Tq2Z7fRTWgsURBVetr9","slug":"liminal-spot-prices-1b212cab","name":"Liminal Spot Prices","description":"Live crypto spot-price snapshots (USD) and fiat FX spot rates. Pay-per-request via x402 v2: $0.01 USDC on Base, Monad, Arbitrum, Optimism, Polygon, Avalanche or Solana (eip155:8453), Monad (eip155:143), Arbitrum (eip155:42161), Optimism (eip155:10), Polygon (eip155:137), Avalanche (eip155:43114) or Solana, scheme exact (EIP-3009). Unpaid calls return HTTP 402 with a base64 PAYMENT-REQUIRED header; retry with a PAYMENT-SIGNATURE header.","url":"https://x402-spot-prices.hsharmanov02.workers.dev/price?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input","output"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"const":"http"},"method":{"const":"GET"},"queryParams":{"type":"object"}},"additionalProperties":true},"output":{"type":"object","required":["type","example"],"properties":{"type":{"const":"json"},"example":{"type":"object"}},"additionalProperties":true}},"additionalProperties":true},"responseSchema":{"type":"json","example":{"as_of":1759099200,"prices":{"bitcoin":{"usd":114230.5,"usd_24h_change":1.24},"ethereum":{"usd":4281.1,"usd_24h_change":-0.63}},"source":"coingecko","service":"spot-price","vs_currency":"usd"}},"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_2UsD-eg1YzCIHx2dQKuq0","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 live cryptocurrency spot prices in USD and fiat FX rates, fetched from CoinGecko, via a pay-per-request x402 micropayment model","exampleAgentPrompt":"What are the current spot prices for bitcoin and ethereum right now, including their 24-hour price changes?","exampleUseCases":[{"title":"Live crypto portfolio valuation","prompt":"Can you pull the current spot prices for bitcoin and ethereum so I can see what my crypto holdings are worth right now?"},{"title":"Price alert threshold check","prompt":"Check the live price of bitcoin — I want to know if it's above or below $110,000 and what the 24-hour change looks like."},{"title":"Arbitrage price reference","prompt":"Grab the current USD spot price for ethereum including the 24-hour change so I can compare it against another exchange's feed."}],"resultDescription":"A JSON object containing a Unix timestamp (as_of), a prices map keyed by coin name with USD spot price and 24-hour percentage change, the data source (CoinGecko), service name, and the vs_currency used (usd).","failureModes":["HTTP 402 with base64 PAYMENT-REQUIRED header if no payment signature is provided — must retry with valid PAYMENT-SIGNATURE header","Invalid or unsupported coin/currency query returns empty or error response","Stale snapshot if CoinGecko upstream is delayed","Network timeout from Cloudflare Worker edge if upstream is unavailable","Payment rejected if USDC balance is insufficient or wrong chain is used"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-request crypto spot price snapshot without a subscription or API key, especially in agentic workflows that support x402 micropayments. It's ideal for one-off price checks, portfolio valuation steps, or trigger evaluations where you want to avoid monthly API key commitments. Prefer alternatives with free tiers if you need very high-frequency polling or bulk historical data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:39:53.962Z","isFirstParty":false,"canonicalSlug":"liminal-spot-prices-1b212cab"}