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+# Image Tools Interface
+
+The below document describes an interface for the OCI Image Tools project as desired by the OCI Certification Program working group (Cert WG.)
+
+Goals:
+* An engineer can verify a container image complies with the OCI Image Spec (https://github.com/opencontainers/image-spec/releases) 
+
+Inputs:
+* (REQUIRED): Path or reference to a container image
+* (OPTIONAL): If the user would like verbose output
+* (OPTIONAL): Which version of the OCI Image Spec to validate against 
+(IF the OCI Image Tool supports multiple OCI Image Spec versions; Default to highest supported)
+
+Outputs:
+* Number of cases run
+* Number of cases passed
+* Number of cases failed
+* List of cases failed
+* Version of OCI Image Tools
+* Version of OCI Image Spec
+* (IF VERBOSE) List of cases passed
+
+## Possible Example
+
+INPUT: 
+`oci-image-tools image validate <image>`
+
+OUTPUT (default): 
+```
+OCI Image Tools vX.Y.Z validating <image> with OCI Image Spec vA.B.C:
+Case 12: FAILED: Image using reserved field key: https://github.com/opencontainers/image-spec/blob/master/descriptor.md#reserved 
+Results: 
+* Ran: 24 / 24 (100%) validation cases
+* Passed: 23 / 24 (96%)
+* Failed: 1 / 24 (4%)
+```
+
+OUTPUT (verbose):
+```
+OCI Image Tools vX.Y.Z validating <image> with OCI Image Spec vA.B.C:
+Case 1: PASSED: …
+Case 2: PASSED: …
+…
+Case 12: FAILED: Image using reserved field key: https://github.com/opencontainers/image-spec/blob/master/descriptor.md#reserved
+Case 13: PASSED: …
+…
+Case 24: PASSED: …
+Results: 
+* Ran: 24 / 24 (100%) validation cases
+* Passed: 23 / 24 (96%)
+* Failed: 1 / 24 (4%)
+```