Wild APIs
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Testing

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10 listings of 104 in catalogue
TableRows
APIPricingAuthFormatFree tierStatus
HTTP CatReturns a cat image for any HTTP status code, useful for error pages and status demos.
Developer Tools › Testing
FreeNoneBinaryUnlimitedLive
httpbinEchoes back HTTP requests for testing: headers, auth, redirects, status codes, delays, and more.
Developer Tools › Testing
FreeNoneJSONUnlimitedLive
LabelixaRenders ZPL/EPL/TSPL/CPCL thermal labels and barcodes to PNG/PDF, validates ZPL syntax.
Developer Tools › Testing
FreemiumAPI keyBinary1k–10k/dayLive
MySQL Visual EXPLAINTurns a MySQL EXPLAIN plan into an interactive, embeddable visual query plan diagram.
Developer Tools › Testing
FreeNoneJSON—Untested
PHPHubChecks PHP code for syntax errors against a chosen PHP version and returns line-numbered results.
Developer Tools › Testing
NoneJSON—Untested
Postman EchoEchoes back request method, headers, body and query params; also test endpoints for auth, cookies and delays.
Developer Tools › Testing
FreeNoneJSONUnlimitedLive
Softwium SQL ValidatorChecks MySQL-style SQL query syntax and returns parser errors with line/column locations.
Developer Tools › Testing
FreeNoneJSONUnlimitedUntested
Status PizzaReturns a pizza-themed image or JSON for any HTTP status code, for demos and error pages.
Developer Tools › Testing
NoneBinaryUnlimitedLive
ToolForte150 utility endpoints: IBAN/VAT validation, cron parsing, regex testing, format conversion, Dutch test data.
Developer Tools › Testing
FreemiumAPI keyJSON<100/dayUntested
TotalShiftLeft SandboxSandbox with mock REST, GraphQL and SOAP endpoints plus 17 auth schemes for practicing API tests.
Developer Tools › Testing
FreeNoneJSON10k+/dayLive