{"uid":"cap_QrPTQMmdxY5WUb4yl4_Vc","slug":"regex-explainer-plain-english-d13516e3","name":"Regex Explainer (Plain English)","description":"Explain a regex in plain English. Paste the regex in message content.","url":"https://pearl-valium-stickers-upc.trycloudflare.com/v1/regex-explain?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":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_4wurK925lmz4Cas2Le_4t","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Explains a regular expression in plain English by analyzing its components and describing what it matches","exampleAgentPrompt":"Can you explain what this regex does in plain English: ^(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#$%^&*])[A-Za-z0-9!@#$%^&*]{8,}$?","exampleUseCases":[{"title":"Understanding a password validation regex","prompt":"Explain what this regex means in plain English: ^(?=.*[A-Z])(?=.*\\d)(?=.*[@$!%*?&])[A-Za-z\\d@$!%*?&]{8,}$ — I found it in our auth code and I want to know what passwords it actually accepts."},{"title":"Debugging an email-matching pattern","prompt":"I have this regex for matching emails: ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$ — can you explain each part in plain English so I can figure out why it's rejecting some valid addresses?"},{"title":"Making sense of a log parsing regex","prompt":"Our log parser uses this pattern: (\\d{4}-\\d{2}-\\d{2})T(\\d{2}:\\d{2}:\\d{2})Z\\s+(ERROR|WARN|INFO)\\s+(.*) — walk me through what it captures so I can write tests for it."}],"resultDescription":"A plain-English explanation of the submitted regex, describing what the pattern matches, breaking down individual components (character classes, quantifiers, anchors, groups, lookaheads, etc.), and clarifying the overall intent of the expression.","failureModes":["Empty or missing regex in message content returns an error","Malformed JSON input returns a 400-level error","Extremely long or deeply nested regex may hit token limits","Service unavailability from Cloudflare tunnel instability returns connection errors","Payment failure (insufficient USDC) blocks the request with a 402 response"],"whenToPreferThis":"Choose this endpoint when a developer or agent needs a natural-language explanation of a regular expression — especially complex patterns with lookaheads, named groups, or multiple nested components. Prefer this over a general-purpose LLM call when you want a dedicated, pay-per-use microservice with deterministic routing, or when privacy matters since the model runs locally. Particularly useful in CI pipelines, code review workflows, or documentation generators where regex patterns need to be made human-readable automatically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:16.049Z","isFirstParty":false,"canonicalSlug":"regex-explainer-plain-english-d13516e3"}