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IPv4 CIDR Prefix Validator
x402
IPv4 CIDR Prefix Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-09-29).
Validates whether a given string is a valid IPv4 CIDR prefix notation (e.g. 192.168.1.0/24)
Price / call$0.009
Success—
StatusUnknown
How this service works
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.
Output
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)
Example use cases
Firewall rule IP range check
“Before I add this to our firewall rules, can you check whether '172.16.0.0/12' is a valid IPv4 CIDR prefix?”
User-submitted network config validation
“A user just entered '256.1.1.0/24' as their network range in our form — is that actually a valid IPv4 CIDR prefix?”
Automated network policy parsing
“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.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/check-ip-cidr4?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | — | JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN. |
| value | string | Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar. |
| schema | — | JSON Schema document for schema-check SKUs. Omit it on string checks. |
Tags
x402
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