{"uid":"cap_l09ZLFwZATh8DJ86wfguj","slug":"sindri-arithmetic-expression-evaluator-e6f5be25","name":"Sindri Arithmetic Expression Evaluator","description":"Safe arithmetic expression evaluator. Parses and evaluates expressions with +, -, *, /, ^, and parentheses using a bounded-recursion parser (no eval/Function), avoiding the arithmetic slips an LLM makes on long expressions.","url":"https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/evaluateExpression?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"expression":{"type":"string","description":"Arithmetic expression to evaluate, e.g. \"(2 + 3) * 4\". Max 200 characters."}}},"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":"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__nwGJTZnhcO5vlANLGvA0","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":"Safely parses and evaluates arithmetic expressions with +, -, *, /, ^, and parentheses using a bounded-recursion parser without eval/Function, avoiding LLM arithmetic errors.","exampleAgentPrompt":"What is the result of ((17 + 3) * 4 - 8) / 6 ^ 2? Use a safe arithmetic evaluator so I get the exact answer without any rounding mistakes.","exampleUseCases":[{"title":"Verify multi-step financial formula","prompt":"Can you evaluate this expression for me: (1250 * 12 + 450) / (1 - 0.25) — I need the exact number for a financial estimate, no guessing."},{"title":"Check homework arithmetic step","prompt":"My kid has this expression on their homework: (3^4 - 15) * (7 + 2) / 18 — can you calculate the exact answer?"},{"title":"Validate formula output in data pipeline","prompt":"I need to confirm what (((88 + 12) * 3) - 40) / 5 evaluates to — please compute it precisely so I can cross-check the output of my spreadsheet."}],"resultDescription":"A numeric result representing the evaluated value of the input arithmetic expression. The response contains the computed answer as a number, derived from safely parsing the expression using a bounded-recursion parser that respects standard operator precedence and parentheses.","failureModes":["Expression exceeds 200 character limit — request rejected","Malformed or invalid expression (e.g. missing operand, unmatched parentheses) — parse error returned","Division by zero in expression — error or undefined result returned","Non-arithmetic characters or unsupported functions in expression — parse error","Payment not attached or insufficient USDC — 402 Payment Required response"],"whenToPreferThis":"Prefer this endpoint when you need reliable, exact arithmetic evaluation of an expression and cannot trust an LLM's native math — especially for long or nested expressions where order-of-operations mistakes are common. It is purpose-built to handle +, -, *, /, ^, and parentheses safely without using JavaScript eval or Function, making it suitable for agent pipelines requiring verifiable numeric output.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:08:55.744Z","isFirstParty":false,"canonicalSlug":"sindri-arithmetic-expression-evaluator-e6f5be25"}