# Strale OpenAPI Schema Validator

> Strale OpenAPI Schema Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054/call, status unknown (last checked 2026-10-10).

Validates an OpenAPI specification's required fields and properties structure for compliance and correctness

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/openapi-validate?utm_source=zero.xyz
- Price: $0.054/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-openapi-schema-validator-4c59c2ff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z8QrSJsHA5YFIao7TnWzS

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability strale-openapi-schema-validator-4c59c2ff
```

Example prompt: Can you validate this OpenAPI schema for me — specifically check that the required fields and properties are correctly defined and compliant?

## When to prefer this

Choose this endpoint when you need a lightweight, auditable validation of OpenAPI spec structure — specifically required fields and properties schema — and when you want a cryptographically hashed audit trail of every validation call. Useful in compliance-sensitive pipelines or when building trust layers for AI agent tooling.

## Known failure modes

- Malformed JSON input returns a parsing error
- Missing required or properties fields causes validation failure
- Schema that references external definitions may not resolve correctly
- Empty input object may return an inconclusive result
- Network timeout on large schema payloads

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns a validation result indicating whether the OpenAPI schema's required fields and properties are correctly defined, along with any errors or compliance issues found. Each call also returns a tamper-evident audit record with cryptographic chain hashing for traceability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-openapi-schema-validator-4c59c2ff/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)