{"uid":"cap_dphSRf-uqiboibn2KWBMl","slug":"regex-builder-from-natural-language-47b2534d","name":"Regex Builder from Natural Language","description":"Build a regex from a natural-language description. Returns just the regex + one test string.","url":"https://linked-aimed-reproduced-changing.trycloudflare.com/v1/regex-build?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"usage":{"type":"object"},"choices":{"type":"array"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SFzbn-M3_C_pjAwRqjW1Q","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a regular expression from a plain-English description, returning the regex pattern and a sample test string.","exampleAgentPrompt":"Can you build me a regex that matches valid email addresses, and give me a test string that would match it?","exampleUseCases":[{"title":"Validate user input fields","prompt":"I need a regex that matches a US phone number in the format (123) 456-7890 or 123-456-7890 — give me the pattern and a test string I can use."},{"title":"Extract dates from log files","prompt":"Build me a regex that matches dates in YYYY-MM-DD format so I can use it to extract timestamps from my server logs."},{"title":"Enforce password complexity rules","prompt":"Generate a regex that matches passwords of at least 8 characters containing at least one uppercase letter, one digit, and one special character, and include a valid example string."}],"resultDescription":"Returns the generated regular expression pattern ready to use in code, along with one example test string that the regex is guaranteed to match.","failureModes":["Ambiguous natural language description results in an overly broad or narrow regex","Generated regex may not cover all edge cases of complex matching rules","Returned test string may only cover a happy-path case, not boundary cases","Cloudflare tunnel may be temporarily unavailable (502/503)","Payment not processed correctly due to x402 protocol issues"],"whenToPreferThis":"Choose this endpoint when you need to quickly generate a working regex from a plain-English description without manually writing or debugging regex syntax. Ideal for developers who know what pattern they want conceptually but don't want to hand-craft the regex. It is more convenient than asking a general-purpose LLM because it returns just the regex and a test string with no surrounding prose, making it easy to extract and use directly in code.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:44:13.087Z","isFirstParty":false,"canonicalSlug":"regex-builder-from-natural-language-47b2534d"}