diff --git a/label_checker_test.go b/label_checker_test.go
index e9c285c9..789324f8 100644
--- a/label_checker_test.go
+++ b/label_checker_test.go
@@ -2,15 +2,25 @@ package test
 
 import (
 	"bytes"
+	"flag"
 	"fmt"
 	"io/ioutil"
+	"log"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"testing"
 
+	"github.com/agilepathway/label-checker/internal/error/panic"
 	"github.com/magefile/mage/mage"
 )
 
+//nolint: gochecknoglobals
+var integration = flag.Bool(
+	"integration",
+	false,
+	"Make calls to real external services.  Requires INPUT_REPO_TOKEN environment variable.")
+
 // nolint: lll
 const (
 	EnvGitHubRepository     = "GITHUB_REPOSITORY"
@@ -19,6 +29,7 @@ const (
 	EnvRequireNoneOf        = "INPUT_NONE_OF"
 	EnvRequireAllOf         = "INPUT_ALL_OF"
 	EnvRequireAnyOf         = "INPUT_ANY_OF"
+	EnvHTTPSProxy           = "HTTPS_PROXY"
 	GitHubTestRepo          = "agilepathway/test-label-checker-consumer"
 	NoLabelsPR              = 1 // https://github.com/agilepathway/test-label-checker-consumer/pull/1
 	OneLabelPR              = 2 // https://github.com/agilepathway/test-label-checker-consumer/pull/2
@@ -27,6 +38,7 @@ const (
 	GitHubEventJSONDir      = "testdata/temp"
 	GitHubEventJSONFilename = "github_event.json"
 	MagefileVerbose         = "MAGEFILE_VERBOSE"
+	HoverflyProxyAddress    = "127.0.0.1:8500"
 	NeedNoneGotNone         = "Label check successful: required none of major, minor, patch, and found 0.\n"
 	NeedNoneGotOne          = "Label check failed: required none of major, minor, patch, but found 1: minor\n"
 	NeedNoneGotTwo          = "Label check failed: required none of major, minor, patch, but found 2: minor, patch\n"
@@ -119,10 +131,12 @@ func TestSplit(t *testing.T) {
 }
 
 func TestMain(m *testing.M) {
+	flag.Parse()
 	os.Mkdir(GitHubEventJSONDir, os.ModePerm)            //nolint
 	os.Setenv(EnvGitHubRepository, GitHubTestRepo)       //nolint
 	os.Setenv(EnvGitHubEventPath, gitHubEventFullPath()) //nolint
 	os.Setenv(MagefileVerbose, "1")                      //nolint
+	setupVirtualServicesIfNotInIntegrationMode()
 	os.Exit(testMainWrapper(m))
 }
 
@@ -133,11 +147,48 @@ func testMainWrapper(m *testing.M) int {
 		os.Unsetenv(EnvGitHubRepository)
 		os.Unsetenv(EnvGitHubEventPath)
 		os.Unsetenv(MagefileVerbose)
+		teardownVirtualServicesIfNotInIntegrationMode()
 	}()
 
 	return m.Run()
 }
 
+func setupVirtualServicesIfNotInIntegrationMode() {
+	if !*integration {
+		startHoverflyInSpyMode()
+		os.Setenv(EnvHTTPSProxy, HoverflyProxyAddress) //nolint
+		importGitHubSimulations()
+	}
+}
+
+func teardownVirtualServicesIfNotInIntegrationMode() {
+	if !*integration {
+		os.Unsetenv(EnvHTTPSProxy) //nolint
+		stopHoverfly()
+	}
+}
+
+func execHoverCtl(arg ...string) {
+	// #nosec 204 https://github.com/securego/gosec/issues/343
+	cmd := exec.Command("hoverctl", arg...)
+	stdout, err := cmd.Output()
+	panic.IfError(err)
+	log.Println(string(stdout))
+}
+
+func startHoverflyInSpyMode() {
+	execHoverCtl("start")
+	execHoverCtl("mode", "spy")
+}
+
+func importGitHubSimulations() {
+	execHoverCtl("import", "./testdata/github_api.json")
+}
+
+func stopHoverfly() {
+	execHoverCtl("stop")
+}
+
 func checkLabels() (int, *bytes.Buffer, *bytes.Buffer) {
 	stdout := &bytes.Buffer{}
 	stderr := &bytes.Buffer{}
diff --git a/testdata/github_api.json b/testdata/github_api.json
new file mode 100644
index 00000000..82f6edd3
--- /dev/null
+++ b/testdata/github_api.json
@@ -0,0 +1,463 @@
+{
+	"data": {
+		"pairs": [
+			{
+				"request": {
+					"path": [
+						{
+							"matcher": "exact",
+							"value": "/graphql"
+						}
+					],
+					"method": [
+						{
+							"matcher": "exact",
+							"value": "POST"
+						}
+					],
+					"destination": [
+						{
+							"matcher": "exact",
+							"value": "api.github.com"
+						}
+					],
+					"scheme": [
+						{
+							"matcher": "exact",
+							"value": "https"
+						}
+					],
+					"body": [
+						{
+							"matcher": "json",
+							"value": "{\"query\":\"query($name:String!$owner:String!$pullRequestNumber:Int!){repository(owner: $owner, name: $name){pullRequest(number: $pullRequestNumber){labels(first: 100){nodes{name}}}}}\",\"variables\":{\"name\":\"test-label-checker-consumer\",\"owner\":\"agilepathway\",\"pullRequestNumber\":1}}\n"
+						}
+					]
+				},
+				"response": {
+					"status": 200,
+					"body": "H4sIAAAAAAAAA6tWSkksSVSyqlYqSi3IL84syS+qBPEKSnNyglILS1OLS0DcnMSk1JxiECsvPyUVyIiOrQUBABUCAvE/AAAA",
+					"encodedBody": true,
+					"headers": {
+						"Access-Control-Allow-Origin": [
+							"*"
+						],
+						"Access-Control-Expose-Headers": [
+							"ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset"
+						],
+						"Cache-Control": [
+							"no-cache"
+						],
+						"Content-Encoding": [
+							"gzip"
+						],
+						"Content-Security-Policy": [
+							"default-src 'none'"
+						],
+						"Content-Type": [
+							"application/json; charset=utf-8"
+						],
+						"Date": [
+							"Tue, 07 Jul 2020 06:01:34 GMT"
+						],
+						"Hoverfly": [
+							"Was-Here"
+						],
+						"Referrer-Policy": [
+							"origin-when-cross-origin, strict-origin-when-cross-origin"
+						],
+						"Server": [
+							"GitHub.com"
+						],
+						"Status": [
+							"200 OK"
+						],
+						"Strict-Transport-Security": [
+							"max-age=31536000; includeSubdomains; preload"
+						],
+						"Vary": [
+							"Accept-Encoding, Accept, X-Requested-With",
+							"Accept-Encoding"
+						],
+						"X-Accepted-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Content-Type-Options": [
+							"nosniff"
+						],
+						"X-Frame-Options": [
+							"deny"
+						],
+						"X-Github-Media-Type": [
+							"github.v4; format=json"
+						],
+						"X-Github-Request-Id": [
+							"DD25:5656:CAF466:106A982:5F040FBE"
+						],
+						"X-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Ratelimit-Limit": [
+							"5000"
+						],
+						"X-Ratelimit-Remaining": [
+							"4996"
+						],
+						"X-Ratelimit-Reset": [
+							"1594102919"
+						],
+						"X-Xss-Protection": [
+							"1; mode=block"
+						]
+					},
+					"templated": false
+				}
+			},
+			{
+				"request": {
+					"path": [
+						{
+							"matcher": "exact",
+							"value": "/graphql"
+						}
+					],
+					"method": [
+						{
+							"matcher": "exact",
+							"value": "POST"
+						}
+					],
+					"destination": [
+						{
+							"matcher": "exact",
+							"value": "api.github.com"
+						}
+					],
+					"scheme": [
+						{
+							"matcher": "exact",
+							"value": "https"
+						}
+					],
+					"body": [
+						{
+							"matcher": "json",
+							"value": "{\"query\":\"query($name:String!$owner:String!$pullRequestNumber:Int!){repository(owner: $owner, name: $name){pullRequest(number: $pullRequestNumber){labels(first: 100){nodes{name}}}}}\",\"variables\":{\"name\":\"test-label-checker-consumer\",\"owner\":\"agilepathway\",\"pullRequestNumber\":2}}\n"
+						}
+					]
+				},
+				"response": {
+					"status": 200,
+					"body": "H4sIAAAAAAAAAxXHMQ7AIAhA0btwDI/RtelAI4MJigIOjfHulT+9vyCjI6QFSl2suOgX1yfzRWOSeSzjS2yhJpkO7iOsBAlqaaKwnx39lLu4dU8AAAA=",
+					"encodedBody": true,
+					"headers": {
+						"Access-Control-Allow-Origin": [
+							"*"
+						],
+						"Access-Control-Expose-Headers": [
+							"ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset"
+						],
+						"Cache-Control": [
+							"no-cache"
+						],
+						"Content-Encoding": [
+							"gzip"
+						],
+						"Content-Security-Policy": [
+							"default-src 'none'"
+						],
+						"Content-Type": [
+							"application/json; charset=utf-8"
+						],
+						"Date": [
+							"Tue, 07 Jul 2020 06:01:37 GMT"
+						],
+						"Hoverfly": [
+							"Was-Here"
+						],
+						"Referrer-Policy": [
+							"origin-when-cross-origin, strict-origin-when-cross-origin"
+						],
+						"Server": [
+							"GitHub.com"
+						],
+						"Status": [
+							"200 OK"
+						],
+						"Strict-Transport-Security": [
+							"max-age=31536000; includeSubdomains; preload"
+						],
+						"Vary": [
+							"Accept-Encoding, Accept, X-Requested-With",
+							"Accept-Encoding"
+						],
+						"X-Accepted-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Content-Type-Options": [
+							"nosniff"
+						],
+						"X-Frame-Options": [
+							"deny"
+						],
+						"X-Github-Media-Type": [
+							"github.v4; format=json"
+						],
+						"X-Github-Request-Id": [
+							"DD25:5656:CAF4F1:106A996:5F040FBE"
+						],
+						"X-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Ratelimit-Limit": [
+							"5000"
+						],
+						"X-Ratelimit-Remaining": [
+							"4995"
+						],
+						"X-Ratelimit-Reset": [
+							"1594102919"
+						],
+						"X-Xss-Protection": [
+							"1; mode=block"
+						]
+					},
+					"templated": false
+				}
+			},
+			{
+				"request": {
+					"path": [
+						{
+							"matcher": "exact",
+							"value": "/graphql"
+						}
+					],
+					"method": [
+						{
+							"matcher": "exact",
+							"value": "POST"
+						}
+					],
+					"destination": [
+						{
+							"matcher": "exact",
+							"value": "api.github.com"
+						}
+					],
+					"scheme": [
+						{
+							"matcher": "exact",
+							"value": "https"
+						}
+					],
+					"body": [
+						{
+							"matcher": "json",
+							"value": "{\"query\":\"query($name:String!$owner:String!$pullRequestNumber:Int!){repository(owner: $owner, name: $name){pullRequest(number: $pullRequestNumber){labels(first: 100){nodes{name}}}}}\",\"variables\":{\"name\":\"test-label-checker-consumer\",\"owner\":\"agilepathway\",\"pullRequestNumber\":3}}\n"
+						}
+					]
+				},
+				"response": {
+					"status": 200,
+					"body": "H4sIAAAAAAAAA6tWSkksSVSyqlYqSi3IL84syS+qBPEKSnNyglILS1OLS0DcnMSk1JxiECsvPyUVyIgGshJzU5WslHIz8/KLlGp14AIFiSXJGUq1sbUgAAANI+uxYAAAAA==",
+					"encodedBody": true,
+					"headers": {
+						"Access-Control-Allow-Origin": [
+							"*"
+						],
+						"Access-Control-Expose-Headers": [
+							"ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset"
+						],
+						"Cache-Control": [
+							"no-cache"
+						],
+						"Content-Encoding": [
+							"gzip"
+						],
+						"Content-Security-Policy": [
+							"default-src 'none'"
+						],
+						"Content-Type": [
+							"application/json; charset=utf-8"
+						],
+						"Date": [
+							"Tue, 07 Jul 2020 06:01:54 GMT"
+						],
+						"Hoverfly": [
+							"Was-Here"
+						],
+						"Referrer-Policy": [
+							"origin-when-cross-origin, strict-origin-when-cross-origin"
+						],
+						"Server": [
+							"GitHub.com"
+						],
+						"Status": [
+							"200 OK"
+						],
+						"Strict-Transport-Security": [
+							"max-age=31536000; includeSubdomains; preload"
+						],
+						"Vary": [
+							"Accept-Encoding, Accept, X-Requested-With",
+							"Accept-Encoding"
+						],
+						"X-Accepted-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Content-Type-Options": [
+							"nosniff"
+						],
+						"X-Frame-Options": [
+							"deny"
+						],
+						"X-Github-Media-Type": [
+							"github.v4; format=json"
+						],
+						"X-Github-Request-Id": [
+							"DD25:5656:CAF87A:106ADC2:5F040FCF"
+						],
+						"X-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Ratelimit-Limit": [
+							"5000"
+						],
+						"X-Ratelimit-Remaining": [
+							"4990"
+						],
+						"X-Ratelimit-Reset": [
+							"1594102919"
+						],
+						"X-Xss-Protection": [
+							"1; mode=block"
+						]
+					},
+					"templated": false
+				}
+			},
+			{
+				"request": {
+					"path": [
+						{
+							"matcher": "exact",
+							"value": "/graphql"
+						}
+					],
+					"method": [
+						{
+							"matcher": "exact",
+							"value": "POST"
+						}
+					],
+					"destination": [
+						{
+							"matcher": "exact",
+							"value": "api.github.com"
+						}
+					],
+					"scheme": [
+						{
+							"matcher": "exact",
+							"value": "https"
+						}
+					],
+					"body": [
+						{
+							"matcher": "json",
+							"value": "{\"query\":\"query($name:String!$owner:String!$pullRequestNumber:Int!){repository(owner: $owner, name: $name){pullRequest(number: $pullRequestNumber){labels(first: 100){nodes{name}}}}}\",\"variables\":{\"name\":\"test-label-checker-consumer\",\"owner\":\"agilepathway\",\"pullRequestNumber\":4}}\n"
+						}
+					]
+				},
+				"response": {
+					"status": 200,
+					"body": "H4sIAAAAAAAAA1WIMQ6AIAwA/9LZF/AMV+NQpYmYShHKYAh/l07Gm+6ugUdFcA0yJSlBJT9WqTLPdFcqasm4ERezKJ6GLMPwInBw4SkZ+vSNEP8joe4H9LUbLyUQYixxAAAA",
+					"encodedBody": true,
+					"headers": {
+						"Access-Control-Allow-Origin": [
+							"*"
+						],
+						"Access-Control-Expose-Headers": [
+							"ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type, Deprecation, Sunset"
+						],
+						"Cache-Control": [
+							"no-cache"
+						],
+						"Content-Encoding": [
+							"gzip"
+						],
+						"Content-Security-Policy": [
+							"default-src 'none'"
+						],
+						"Content-Type": [
+							"application/json; charset=utf-8"
+						],
+						"Date": [
+							"Tue, 07 Jul 2020 06:01:41 GMT"
+						],
+						"Hoverfly": [
+							"Was-Here"
+						],
+						"Referrer-Policy": [
+							"origin-when-cross-origin, strict-origin-when-cross-origin"
+						],
+						"Server": [
+							"GitHub.com"
+						],
+						"Status": [
+							"200 OK"
+						],
+						"Strict-Transport-Security": [
+							"max-age=31536000; includeSubdomains; preload"
+						],
+						"Vary": [
+							"Accept-Encoding, Accept, X-Requested-With",
+							"Accept-Encoding"
+						],
+						"X-Accepted-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Content-Type-Options": [
+							"nosniff"
+						],
+						"X-Frame-Options": [
+							"deny"
+						],
+						"X-Github-Media-Type": [
+							"github.v4; format=json"
+						],
+						"X-Github-Request-Id": [
+							"DD25:5656:CAF5A1:106AA4E:5F040FC1"
+						],
+						"X-Oauth-Scopes": [
+							"repo"
+						],
+						"X-Ratelimit-Limit": [
+							"5000"
+						],
+						"X-Ratelimit-Remaining": [
+							"4994"
+						],
+						"X-Ratelimit-Reset": [
+							"1594102919"
+						],
+						"X-Xss-Protection": [
+							"1; mode=block"
+						]
+					},
+					"templated": false
+				}
+			}
+		],
+		"globalActions": {
+			"delays": [],
+			"delaysLogNormal": []
+		}
+	},
+	"meta": {
+		"schemaVersion": "v5.1",
+		"hoverflyVersion": "v1.3.0",
+		"timeExported": "2020-07-07T13:03:21+07:00"
+	}
+}