Data Validation
RevAddress
US address standardization, congressional and state legislative districts, Census data; free tier
apiKeyHTTPSNo CORS
Data Validation
SchemaShield
Read-only preflight for breaking schema changes and downstream query impact.
SchemaShield API is a free Data Validation API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
- Authentication
- apiKey
- HTTPS
- Yes
- CORS
- Unknown
- Category
- Data Validation
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SchemaShield API alternatives
apiKeyHTTPSNo CORS
No authNo HTTPSCORS ?
sthan.io Address Parser
Parse freeform US addresses into structured fields (house number, street, unit, city, state, ZIP)
apiKeyHTTPSNo CORS
No authHTTPSCORS ?
sthan.io Address Verification
Validate and standardize US addresses, with ZIP+4 and deliverability status
apiKeyHTTPSNo CORS
SchemaShield API FAQ
Is the SchemaShield API free?
Yes. The SchemaShield API is listed in the Data Validation category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Does the SchemaShield API require an API key?
Yes. The SchemaShield API uses apiKey authentication, so you need to register for credentials before making requests.
Can I call the SchemaShield API from the browser?
CORS support for the SchemaShield API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Does the SchemaShield API support HTTPS?
Yes. The SchemaShield API is served over HTTPS, so it's safe to use in production.