diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d1d4fe8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,16 @@
+# Gradle and builds
+.gradle
+**/build/
+**/out/
+!src/**/build
+!gradle-wrapper.jar
+
+# Ignore Gradle GUI Config
+gradle-app.setting
+
+# Project cache
+.gradletasknamecache
+
+# Intellij
+.idea
+*.iml
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..5d69eca
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,186 @@
+plugins {
+    id 'java'
+    id 'checkstyle'
+    id "com.github.jk1.dependency-license-report" version "1.14"
+    id 'com.github.sherter.google-java-format' version '0.9'
+    id "com.github.spotbugs" version "4.4.2"
+    id "com.jfrog.artifactory" version "4.15.2"
+    id "net.ltgt.apt" version "0.21"
+    id "net.ltgt.errorprone" version "1.2.1"
+}
+
+/*
+ * When you check a version of the library, place the date that you checked it next to the library.
+ * TODOs indicate who has context for the upgrade and any reasons it may be delayed, not necessarily
+ * who should perform it.
+**/
+ext.libVersions = [
+    // Core Libraries
+    "guava": "29.0-jre", // 22 June 2020
+    "guice": "4.2.3", // 22 June 2020
+
+    // Logging
+    "flogger": "0.5.1", // 22 June 2020
+    "logback": "1.2.3", // 16 January 2020
+    "slf4j": "1.7.30", // 16 January 2020
+
+    // Client Libraries
+    "httpClient": "4.5.12", // 22 June 2020
+
+    // Build Utilities
+    "errorprone":"2.4.0", // 22 June 2020
+    "errorproneJavacVersion":"9+181-r4173-1", // 22 June 2020
+    "jacoco": "0.8.5", // 22 June 2020
+    "spotbugs": "4.0.4", // 22 June 2020
+
+    // Test
+    "junit": "4.13", // 22 June 2020
+    "mockito": "3.3.3", // 22 June 2020
+
+    // Command Line Utility Libraries
+    "jcommander": "1.78", // 22 June 2020
+
+    // OpenAPI Libraries
+    "openapiParser": "1.0.1", // 23 June 2020
+    "openapiCore": "1.0.1" // 23 June 2020
+]
+
+allprojects {
+    apply plugin: 'checkstyle'
+    apply plugin: 'idea'
+    apply plugin: 'jacoco'
+    apply plugin: 'java'
+
+    apply plugin: "com.github.jk1.dependency-license-report"
+    apply plugin: 'com.github.sherter.google-java-format'
+    apply plugin: "com.github.spotbugs"
+    apply plugin: 'net.ltgt.apt-idea'
+    apply plugin: "net.ltgt.errorprone"
+
+    sourceCompatibility = 11
+    targetCompatibility = 11
+
+    googleJavaFormat {
+        toolVersion = '1.7'
+    }
+
+    repositories {
+        mavenCentral()
+        jcenter()
+    }
+
+    dependencies {
+        checkstyle 'com.puppycrawl.tools:checkstyle:8.24'
+        errorproneJavac("com.google.errorprone:javac:${libVersions.errorproneJavacVersion}")
+        errorprone "com.google.errorprone:error_prone_core:${libVersions.errorprone}"
+
+        implementation "com.google.flogger:flogger:${libVersions.flogger}"
+        implementation "com.google.guava:guava:${libVersions.guava}"
+        implementation "com.google.inject:guice:${libVersions.guice}"
+
+        //testCompile project(':oas-test')
+
+        //testImplementation "junit:junit:${libVersions.junit}"
+        //testImplementation "org.mockito:mockito-core:${libVersions.mockito}"
+    }
+
+    checkstyle {
+        configFile = file("$rootDir/config/checkstyle/checkstyle.xml")
+    }
+
+    checkstyleMain {
+        logging.setLevel(LogLevel.LIFECYCLE)
+    }
+
+    checkstyleTest {
+        logging.setLevel(LogLevel.LIFECYCLE)
+    }
+
+    group 'com.apigee.security.oas'
+    version '1.0-SNAPSHOT'
+
+
+    spotbugs {
+        toolVersion = libVersions.spotbugs
+        // TODO(ttourani): Create spotbugs-exclude.xml
+        //excludeFilter = file("$rootDir/spotbugs-exclude.xml")
+        effort = "max"
+        reportLevel = "low"
+    }
+
+    tasks.withType(JavaCompile).configureEach {
+        options.errorprone {
+            disableWarningsInGeneratedCode = true
+            allDisabledChecksAsWarnings = true
+            error("Var")
+            disable("AndroidJdkLibsChecker")
+            disable("StaticOrDefaultInterfaceMethod")
+            disable("Java7ApiChecker")
+            excludedPaths = ".*/build/generated/.*" // Required due to https://github.com/google/error-prone/issues/1165
+        }
+    }
+
+    jacoco {
+        toolVersion = libVersions.jacoco
+    }
+
+    jacocoTestReport {
+        reports {
+            xml.enabled true
+            csv.enabled false
+            html.enabled true
+        }
+
+    }
+
+    jacocoTestCoverageVerification {
+        violationRules {
+            rule {
+                limit {
+                    minimum = 0.90
+                }
+
+                limit {
+                    counter="BRANCH"
+                    minimum = 0.90
+                }
+            }
+        }
+    }
+
+    gradle.projectsEvaluated {
+        tasks.withType(JavaCompile) {
+            options.compilerArgs << "-Werror"
+        }
+    }
+
+    licenseReport {
+        configurations = ['runtimeClasspath']
+    }
+
+    jacocoTestCoverageVerification.dependsOn jacocoTestReport
+
+    jacocoTestReport.mustRunAfter check
+    jacocoTestReport.mustRunAfter test
+
+    build.dependsOn jacocoTestReport
+
+    jacocoTestCoverageVerification.mustRunAfter build
+}
+
+subprojects {
+    apply plugin: 'distribution'
+    apply plugin: 'net.ltgt.apt'
+
+    idea {
+        module {
+            // Marks the already(!) added srcDir as "generated"
+            generatedSourceDirs += file('build/generated/sources/annotationProcessor/java')
+        }
+    }
+
+    build.dependsOn check
+    build.dependsOn distTar
+}
+
+defaultTasks 'build'
\ No newline at end of file
diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
new file mode 100644
index 0000000..dc39908
--- /dev/null
+++ b/config/checkstyle/checkstyle.xml
@@ -0,0 +1,253 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN" "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
+<!-- This is a checkstyle configuration file. For descriptions of
+what the following rules do, please see the checkstyle configuration
+page at http://checkstyle.sourceforge.net/config.html -->
+<!-- Checks with numbered comments refer to recommendations made
+by Joshua Bloch in his book Effective Java -->
+<module name="Checker">
+  <property name="charset" value="UTF-8"/>
+  <module name="BeforeExecutionExclusionFileFilter">
+    <property name="fileNamePattern" value="module\-info\.java$"/>
+  </module>
+  <module name="FileTabCharacter">
+    <property name="eachLine" value="true"/>
+    <!-- Checks that there are no tab characters in the file.
+-->
+  </module>
+  <module name="RegexpSingleline">
+    <!-- Checks that FIXME is not used in comments.  TODO is preferred.
+-->
+    <property name="format" value="((//.*)|(\*.*))FIXME"/>
+    <property name="message" value="TODO is preferred to FIXME.  e.g. &quot;TODO(johndoe): Refactor when v2 is released.&quot;"/>
+  </module>
+  <module name="RegexpSingleline">
+    <!-- Checks that TODOs have an owner or ticket and are formatted correctly:
+  http://go/java-style#s4.8.6.2-todo-comments
+-->
+    <property name="format" value="TODO[^\(]."/>
+    <property name="message" value="TODOs need to have an owner or ticket specified (see go/tott-486)"/>
+  </module>
+  <module name="RegexpSingleline">
+    <!-- Bans the use of System.out.println and associated methods.
+-->
+    <property name="format" value="System\.[\a-z]+\.println"/>
+    <property name="message" value="Use a logger, not System's println."/>
+  </module>
+  <module name="RegexpSingleline">
+    <!-- Bans the use of System#currentTimeMillis.
+-->
+    <property name="format" value="System\.currentTimeMillis"/>
+    <property name="message" value="System.currentTimeMillis is strongly discouraged. There is almost no situation where it is the correct choice. See the java.time libraries instead."/>
+  </module>
+  <!-- Other libraries from:
+https://engdoc.corp.google.com/eng/doc/devguide/java/practices/javatime.md
+-->
+  <module name="RegexpSingleline">
+    <property name="format" value="LocalDate\.now"/>
+  </module>
+  <module name="RegexpSingleline">
+    <property name="format" value="LocalDateTime\.now"/>
+  </module>
+  <module name="RegexpSingleline">
+    <property name="format" value="LocalTime\.now"/>
+  </module>
+  <module name="RegexpSingleline">
+    <property name="format" value="OffsetDateTime\.now"/>
+  </module>
+  <module name="RegexpSingleline">
+    <property name="format" value="ZonedDateTime\.now"/>
+  </module>
+  <module name="RegexpSingleline">
+    <property name="format" value="Clock\.systemDefaultZone"/>
+  </module>
+  <!-- All Java AST specific tests live under TreeWalker module. -->
+  <module name="TreeWalker">
+    <!--
+IMPORT CHECKS
+-->
+    <module name="RedundantImport">
+      <property name="severity" value="error"/>
+    </module>
+    <module name="AvoidStarImport">
+      <property name="severity" value="error"/>
+    </module>
+    <module name="IllegalImport">
+      <property name="severity" value="error"/>
+      <property name="illegalPkgs" value="com.sun, com.apache.beam.repackaged, jdk.internal, javax.annotation.concurrent, jdk.nashorn.internal, avro.shaded, jersey.repackaged"/>
+      <property name="illegalClasses" value="javax.annotation.Nullable, edu.umd.cs.findbugs.annotations.Nullable, com.google.inject.Inject, com.google.inject.BindingAnnotation, com.google.inject.Named, com.google.inject.Singleton, com.google.inject.ScopeAnnotation, java.util.Date, java.util.Calendar, jdk.nashorn.internal.ir.annotations.Immutable"/>
+    </module>
+    <!-- ENCODING AND FORMAT CHECKS -->
+    <module name="IllegalTokenText">
+      <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
+      <property name="format" value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
+      <property name="message" value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
+    </module>
+    <module name="AvoidEscapedUnicodeCharacters">
+      <property name="allowEscapesForControlCharacters" value="true"/>
+      <property name="allowByTailComment" value="true"/>
+      <property name="allowNonPrintableEscapes" value="true"/>
+    </module>
+    <module name="EmptyLineSeparator">
+      <!-- go/java-style#s4.6.1-vertical-whitespace -->
+      <property name="tokens" value="CLASS_DEF, METHOD_DEF, CTOR_DEF"/>
+      <property name="allowNoEmptyLineBetweenFields" value="true"/>
+    </module>
+    <!--
+JAVADOC CHECKS
+-->
+    <!-- FORK: This policy was edited to use open-source implementation. -->
+    <!-- <module name="com.google.devtools.checkstyle.checks.javadoc.GoogleJavadocTypeCheck"> -->
+    <module name="JavadocType">
+      <!-- Item 28 - Write doc comments for all exposed API elements. -->
+      <!-- Ensure all classes with visibility greater than or equal to
+  protected have class level documentation. -->
+      <property name="scope" value="protected"/>
+      <!-- Style guide doesn't prohibit custom tags. Typos will be caught by other tools. -->
+      <property name="allowUnknownTags" value="true"/>
+      <property name="allowMissingParamTags" value="true"/>
+      <message key="javadoc.missing" value="Missing a Javadoc comment."/>
+    </module>
+    <module name="JavadocMethod">
+      <property name="scope" value="public"/>
+      <property name="allowMissingParamTags" value="true"/>
+      <property name="allowMissingThrowsTags" value="true"/>
+      <property name="allowMissingReturnTag" value="true"/>
+      <property name="allowUndeclaredRTE" value="true"/>
+      <property name="allowMissingPropertyJavadoc" value="true"/>
+      <property name="allowedAnnotations" value="Override, Test, Before, After, BeforeClass, AfterClass, "/>
+      <property name="allowThrowsTagsForSubclasses" value="true"/>
+    </module>
+    <module name="MissingJavadocMethod">
+      <property name="severity" value="warning"/>
+      <property name="scope" value="public"/>
+      <property name="minLineCount" value="2"/>
+      <property name="allowedAnnotations" value="Override, Test, Provides"/>
+    </module>
+    <module name="NonEmptyAtclauseDescription"/>
+    <module name="SummaryJavadoc">
+      <property name="severity" value="error"/>
+      <property name="forbiddenSummaryFragments" value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )"/>
+    </module>
+    <module name="InvalidJavadocPosition"/>
+    <module name="JavadocParagraph"/>
+    <module name="AtclauseOrder">
+      <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
+      <property name="target" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
+    </module>
+    <!--
+NAMING CHECKS
+-->
+    <!-- Item 38 - Adhere to generally accepted naming conventions -->
+    <module name="PackageName">
+      <!-- Validates identifiers for package names against the
+  supplied expression. -->
+      <property name="format" value="^([a-z][a-z0-9]*)(\.[a-z][a-z0-9]*)*$"/>
+      <property name="severity" value="error"/>
+      <message key="name.invalidPattern" value="Package name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="TypeNameCheck">
+      <!-- Validates static, final fields against the supplied expression. -->
+      <metadata name="altname" value="TypeName"/>
+      <property name="format" value="^[A-Z][a-zA-Z0-9]*(_CustomFieldSerializer)?$"/>
+    </module>
+    <module name="MemberNameCheck">
+      <!-- Validates non-static members against the supplied expression. -->
+      <metadata name="altname" value="MemberName"/>
+      <property name="applyToPublic" value="true"/>
+      <property name="applyToProtected" value="true"/>
+      <property name="applyToPackage" value="true"/>
+      <property name="applyToPrivate" value="true"/>
+      <!-- allows for googles deprecated foo_ member naming scheme -->
+      <property name="format" value="^[a-z][a-zA-Z0-9]*_?$"/>
+    </module>
+    <module name="MethodNameCheck">
+      <!-- Validates identifiers for method names. -->
+      <metadata name="altname" value="MethodName"/>
+      <property name="format" value="^([a-z][a-zA-Z0-9]*(_[a-zA-Z0-9]+)*|__constructor__|__staticInitializer__)$"/>
+      <property name="severity" value="error"/>
+    </module>
+    <module name="ParameterName">
+      <!-- Validates identifiers for method parameters against the
+  expression "^[a-z][a-zA-Z0-9]*$". -->
+      <property name="severity" value="error"/>
+    </module>
+    <module name="LambdaParameterName">
+      <property name="severity" value="error"/>
+      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <message key="name.invalidPattern" value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="CatchParameterName">
+      <property name="severity" value="error"/>
+      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <message key="name.invalidPattern" value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="LocalFinalVariableName">
+      <!-- Validates identifiers for local final variables against the
+  expression "^[a-z][a-zA-Z0-9]*$". -->
+      <property name="severity" value="error"/>
+    </module>
+    <module name="LocalVariableName">
+      <!-- Validates identifiers for local variables against the
+  expression "^[a-z][a-zA-Z0-9]*$". -->
+      <property name="severity" value="error"/>
+    </module>
+    <module name="ClassTypeParameterName">
+      <!-- Class generic type. go/java-style/#s5.2.8-type-variable-names -->
+      <property name="severity" value="error"/>
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern" value="Class type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="MethodTypeParameterName">
+      <!-- Method generic type. go/java-style/#s5.2.8-type-variable-names -->
+      <property name="severity" value="error"/>
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern" value="Method type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="InterfaceTypeParameterName">
+      <!-- Interface generic type. go/java-style/#s5.2.8-type-variable-names -->
+      <property name="severity" value="error"/>
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern" value="Interface type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="AbbreviationAsWordInName">
+      <property name="ignoreFinal" value="false"/>
+      <property name="allowedAbbreviationLength" value="1"/>
+    </module>
+    <module name="AnnotationLocation">
+      <property name="id" value="AnnotationLocationMostCases"/>
+      <property name="tokens" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF"/>
+    </module>
+    <module name="AnnotationLocation">
+      <property name="id" value="AnnotationLocationVariables"/>
+      <property name="tokens" value="VARIABLE_DEF"/>
+      <property name="allowSamelineMultipleAnnotations" value="true"/>
+    </module>
+    <!--
+LENGTH and CODING CHECKS
+-->
+    <module name="OperatorWrap">
+      <property name="option" value="NL"/>
+      <property name="tokens" value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR,                  LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF "/>
+    </module>
+    <module name="OneTopLevelClass"/>
+    <!-- Checks for braces around if and else blocks -->
+    <module name="NeedBraces">
+      <property name="severity" value="error"/>
+      <property name="tokens" value="LITERAL_IF, LITERAL_ELSE, LITERAL_FOR, LITERAL_WHILE, LITERAL_DO"/>
+    </module>
+    <!-- Ensures the use of style arrays and not C++-style arrays:
+http://go/java-style#s4.8.3.2-array-declarations -->
+    <module name="ArrayTypeStyle"/>
+    <module name="EmptyCatchBlock">
+      <property name="exceptionVariableName" value="expected"/>
+    </module>
+    <!-- Overloaded methods should always be grouped together. -->
+    <module name="OverloadMethodsDeclarationOrder"/>
+    <!-- http://go/java-style#s4.8.2.2-variables-limited-scope -->
+    <module name="VariableDeclarationUsageDistance"/>
+    <module name="EqualsAvoidNull"/>
+    <!-- http://go/java-style#s6.4-finalizers -->
+    <module name="NoFinalizer"/>
+  </module>
+</module>
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..87b738c
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..9543e93
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
\ No newline at end of file
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..af6708f
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..0f8d593
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/oas-cli/build.gradle b/oas-cli/build.gradle
new file mode 100644
index 0000000..f2a89ff
--- /dev/null
+++ b/oas-cli/build.gradle
@@ -0,0 +1,5 @@
+dependencies {
+    implementation 'com.beust:jcommander:1.78'
+
+    testImplementation project(':oas-test')
+}
\ No newline at end of file
diff --git a/oas-cli/src/main/java/com/apigee/security/oas/CommandLineParser.java b/oas-cli/src/main/java/com/apigee/security/oas/CommandLineParser.java
new file mode 100644
index 0000000..2b2bd6c
--- /dev/null
+++ b/oas-cli/src/main/java/com/apigee/security/oas/CommandLineParser.java
@@ -0,0 +1,3 @@
+package com.apigee.security.oas;
+
+public class CommandLineParser {}
diff --git a/oas-cli/src/test/java/com/apigee/security/oas/CommandLineParserTest.java b/oas-cli/src/test/java/com/apigee/security/oas/CommandLineParserTest.java
new file mode 100644
index 0000000..7727d03
--- /dev/null
+++ b/oas-cli/src/test/java/com/apigee/security/oas/CommandLineParserTest.java
@@ -0,0 +1,3 @@
+package com.apigee.security.oas;
+
+public class CommandLineParserTest {}
diff --git a/oas-core/build.gradle b/oas-core/build.gradle
new file mode 100644
index 0000000..4556733
--- /dev/null
+++ b/oas-core/build.gradle
@@ -0,0 +1,6 @@
+dependencies {
+    implementation "org.openapi4j:openapi-parser:${libVersions.openapiParser}"
+    implementation "org.openapi4j:openapi-core:${libVersions.openapiCore}"
+
+    testImplementation project(":oas-test")
+}
\ No newline at end of file
diff --git a/oas-core/src/main/java/com/apigee/security/oas/parser/BaseParser.java b/oas-core/src/main/java/com/apigee/security/oas/parser/BaseParser.java
new file mode 100644
index 0000000..9204695
--- /dev/null
+++ b/oas-core/src/main/java/com/apigee/security/oas/parser/BaseParser.java
@@ -0,0 +1,3 @@
+package com.apigee.security.oas.parser;
+
+public class BaseParser {}
diff --git a/oas-core/src/test/java/com/apigee/security/oas/parser/BaseParserTest.java b/oas-core/src/test/java/com/apigee/security/oas/parser/BaseParserTest.java
new file mode 100644
index 0000000..9f28094
--- /dev/null
+++ b/oas-core/src/test/java/com/apigee/security/oas/parser/BaseParserTest.java
@@ -0,0 +1,3 @@
+package com.apigee.security.oas.parser;
+
+public class BaseParserTest {}
diff --git a/oas-test/build.gradle b/oas-test/build.gradle
new file mode 100644
index 0000000..377662e
--- /dev/null
+++ b/oas-test/build.gradle
@@ -0,0 +1,4 @@
+dependencies {
+    implementation "junit:junit:${libVersions.junit}"
+    implementation "org.mockito:mockito-core:${libVersions.mockito}"
+}
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..1da65f2
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,6 @@
+rootProject.name = 'api-security-tools'
+
+include 'oas-cli'
+include 'oas-core'
+include 'oas-test'
+