{"uid":"cap_YV6mjYfw_C4x53f-FRqCD","slug":"geekvault-arithmetic-expression-calculator-f9bfe9de","name":"GeekVault Arithmetic Expression Calculator","description":"Network, docs, image, web, and dev utility tools paid per call via x402. No signup, no API keys, no subscriptions — just USDC on Base.","url":"https://api.geekvault.dev/dev-tools/v1/calculate?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["expression"],"properties":{"expression":{"type":"string","description":"Expresión aritmética a evaluar."}}},"responseSchema":{"type":"object","required":["expression","result"],"properties":{"result":{"type":"number","format":"double"},"expression":{"type":"string"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ItMrCRNMSUT5yZ9yh64a4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Evaluates an arithmetic expression string and returns the numeric result","exampleAgentPrompt":"Can you calculate the result of the expression (150 * 0.08) + (42 / 6) - 3 for me?","exampleUseCases":[{"title":"Invoice total computation","prompt":"Calculate the total for me: (299.99 * 3) + (49.95 * 2) - 15 — I need to verify the line items on this invoice."},{"title":"Percentage discount calculation","prompt":"What is 1200 * (1 - 0.175)? I need to figure out the price after a 17.5% discount."},{"title":"Scientific formula evaluation","prompt":"Can you evaluate this expression for me: (9.81 * 75 * 12) / 2 — I need the kinetic energy result for a quick physics check."}],"resultDescription":"Returns a JSON object containing the original expression string and the evaluated numeric result as a double-precision floating point number.","failureModes":["Invalid or malformed arithmetic expression returns an error","Division by zero in the expression may cause an error or return Infinity","Missing required 'expression' parameter returns a 400 Bad Request","Unsupported operations or functions in the expression string may not be evaluated","Payment failure via x402 returns a 402 Payment Required response"],"whenToPreferThis":"Choose this endpoint when you need lightweight, serverless arithmetic evaluation without spinning up a math library or code interpreter. Ideal for AI agents that need to evaluate user-supplied formula strings at runtime, especially in environments where you want pay-per-call pricing with no API key management. Prefer this over a general-purpose code execution API when you just need fast arithmetic results with minimal overhead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T12:57:39.963Z","isFirstParty":false,"canonicalSlug":"geekvault-arithmetic-expression-calculator-f9bfe9de"}