{"uid":"cap_e6U0PWBqzKH4fH8MjkVCg","slug":"ipv4-cidr-prefix-validator-5901c5d5","name":"IPv4 CIDR Prefix Validator","description":"Call when an agent needs whether a string is an IPv4 CIDR prefix. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-ip-cidr4 first.","url":"https://agentshelf.syntexa.ch/v1/check-ip-cidr4?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"data":{"description":"JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."},"value":{"type":"string","examples":["8.8.8.0/24"],"maxLength":20000,"minLength":1,"description":"Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."},"schema":{"description":"JSON Schema document for schema-check SKUs. Omit it on string checks."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.009","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":"$0.009/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7nJ_5DOd43f_M8vz7xGru","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.009","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a given string is a valid IPv4 CIDR prefix notation (e.g. 192.168.1.0/24)","exampleAgentPrompt":"Is '10.0.0.0/8' a valid IPv4 CIDR prefix? Just check the string format and tell me yes or no.","exampleUseCases":[{"title":"Firewall rule IP range check","prompt":"Before I add this to our firewall rules, can you check whether '172.16.0.0/12' is a valid IPv4 CIDR prefix?"},{"title":"User-submitted network config validation","prompt":"A user just entered '256.1.1.0/24' as their network range in our form — is that actually a valid IPv4 CIDR prefix?"},{"title":"Automated network policy parsing","prompt":"I'm processing a list of network policies and need to know if '192.168.100.0/28' is a properly formatted IPv4 CIDR block before I apply it."}],"resultDescription":"Returns a boolean or structured indication of whether the input string is a valid IPv4 CIDR prefix (e.g. whether it matches correct format such as a valid IPv4 address followed by a valid prefix length /0-/32)","failureModes":["Empty or missing value field returns validation error","String exceeding 20000 characters rejected","Malformed request body returns 400-level error","Payment of $0.009 USDC required; missing payment returns 402 Payment Required","Non-string input types may be rejected or coerced"],"whenToPreferThis":"Use this endpoint when you need a quick, cheap, deterministic check that a string is a properly formatted IPv4 CIDR prefix — no LLM, no network lookups, pure format validation. Prefer the free sandbox endpoint POST /v1/sandbox/check-ip-cidr4 for testing or when cost matters. Choose this over regex-based agent-side validation when you want a reliable, maintained implementation without writing your own parsing logic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:14.971Z","isFirstParty":false,"canonicalSlug":"ipv4-cidr-prefix-validator-5901c5d5"}