{"uid":"cap_ZA-YmaaXKcvVJuhUc4rdj","slug":"signaldesk-ai-circle-math-045c475c","name":"SignalDesk AI Circle Math","description":"Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.","url":"https://x402-agent.kariguetoazul.workers.dev/api/math/circle?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"radius":{"type":"number","maximum":1000000000000000,"minimum":0,"description":"Non-negative number."}}},"responseSchema":{"type":"json","example":{"area":12.56637061435917,"circumference":12.56637061435917}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_s6KxhQc-l7dNhL0ESAKq4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the area and circumference of a circle given its radius","exampleAgentPrompt":"Can you calculate the area and circumference of a circle with a radius of 7?","exampleUseCases":[{"title":"Quick circle area lookup","prompt":"What's the area and circumference of a circle with a radius of 3.5?"},{"title":"Engineering pipe sizing estimate","prompt":"I need the cross-sectional area of a circle with a radius of 250 to check if it fits our pipe spec."},{"title":"Garden irrigation planning","prompt":"Can you figure out the area covered by a circular sprinkler with a radius of 15 feet?"}],"resultDescription":"A JSON object containing two floating-point numbers: 'area' (the area of the circle, π × r²) and 'circumference' (the perimeter of the circle, 2π × r).","failureModes":["Missing or non-numeric radius returns a validation error","Radius below 0 or above 1,000,000,000,000,000 is rejected due to schema constraints","Payment of 0.001 USDC not provided results in a 402 Payment Required response","Malformed JSON body may return a 400 error"],"whenToPreferThis":"Choose this endpoint when you need a quick, reliable, paid-on-demand API call to compute circle area and circumference without implementing the math locally — useful in agent pipelines where deterministic arithmetic is offloaded to a verifiable external service.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:42:07.898Z","isFirstParty":false,"canonicalSlug":"signaldesk-ai-circle-math-045c475c"}