diff --git a/cmd/symbols/internal/api/handler_test.go b/cmd/symbols/internal/api/handler_test.go
index e0db571570c..eb4d7415ab2 100644
--- a/cmd/symbols/internal/api/handler_test.go
+++ b/cmd/symbols/internal/api/handler_test.go
@@ -3,10 +3,11 @@ package api
 import (
 	"context"
 	"net/http/httptest"
-	"reflect"
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/sourcegraph/go-ctags"
 	"github.com/sourcegraph/sourcegraph/cmd/symbols/fetcher"
 	"github.com/sourcegraph/sourcegraph/cmd/symbols/gitserver"
@@ -135,8 +136,8 @@ func TestHandler(t *testing.T) {
 				if testCase.expected != nil {
 					t.Errorf("unexpected search result. want=%+v, have=nil", testCase.expected)
 				}
-			} else if !reflect.DeepEqual(resultSymbols, testCase.expected) {
-				t.Errorf("unexpected search result. want=%+v, have=%+v", testCase.expected, resultSymbols)
+			} else if diff := cmp.Diff(resultSymbols, testCase.expected, cmpopts.EquateEmpty()); diff != "" {
+				t.Errorf("unexpected search result. diff: %s", diff)
 			}
 		})
 	}
diff --git a/dev/run-server-image.sh b/dev/run-server-image.sh
index 420ef2bb703..3501e99a274 100755
--- a/dev/run-server-image.sh
+++ b/dev/run-server-image.sh
@@ -6,6 +6,7 @@ PORT=${PORT:-"7080"}
 URL="http://localhost:$PORT"
 DATA=${DATA:-"/tmp/sourcegraph-data"}
 SOURCEGRAPH_LICENSE_GENERATION_KEY=${SOURCEGRAPH_LICENSE_GENERATION_KEY:-""}
+SG_FEATURE_FLAG_GRPC=${SG_FEATURE_FLAG_GRPC:-"false"}
 
 echo "--- Checking for existing Sourcegraph instance at $URL"
 if curl --output /dev/null --silent --head --fail "$URL"; then
@@ -40,6 +41,7 @@ docker run "$@" \
   -e DEBUG=t \
   -e ALLOW_SINGLE_DOCKER_CODE_INSIGHTS=t \
   -e SOURCEGRAPH_LICENSE_GENERATION_KEY="$SOURCEGRAPH_LICENSE_GENERATION_KEY" \
+  -e SG_FEATURE_FLAG_GRPC="$SG_FEATURE_FLAG_GRPC" \
   --volume "$DATA/config:/etc/sourcegraph" \
   --volume "$DATA/data:/var/opt/sourcegraph" \
   "$IMAGE"
diff --git a/doc/dev/background-information/ci/reference.md b/doc/dev/background-information/ci/reference.md
index 9cd8b542955..6557f65b406 100644
--- a/doc/dev/background-information/ci/reference.md
+++ b/doc/dev/background-information/ci/reference.md
@@ -17,7 +17,7 @@ The default run type.
 - Pipeline for `Go` changes:
   - **Metadata**: Pipeline metadata
   - **Linters and static analysis**: Run sg lint
-  - **Go checks**: Test (all), Test (enterprise/internal/insights), Test (internal/database), Test (internal/repos), Test (enterprise/internal/batches), Test (cmd/frontend), Test (enterprise/internal/database), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (dev/sg), Build
+  - **Go checks**: Test (all), Test (all (gRPC)), Test (enterprise/internal/insights), Test (enterprise/internal/insights (gRPC)), Test (internal/repos), Test (internal/repos (gRPC)), Test (enterprise/internal/batches), Test (enterprise/internal/batches (gRPC)), Test (cmd/frontend), Test (cmd/frontend (gRPC)), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Test (dev/sg), Test (dev/sg (gRPC)), Test (internal/database), Test (enterprise/internal/database), Build
   - Upload build trace
 
 - Pipeline for `Client` changes:
@@ -32,12 +32,12 @@ The default run type.
   - **Metadata**: Pipeline metadata
   - **Linters and static analysis**: GraphQL lint
   - **Client checks**: Puppeteer tests prep, Puppeteer tests for chrome extension, Puppeteer tests chunk #1, Puppeteer tests chunk #2, Puppeteer tests chunk #3, Puppeteer tests chunk #4, Puppeteer tests chunk #5, Puppeteer tests chunk #6, Puppeteer tests chunk #7, Puppeteer tests chunk #8, Puppeteer tests chunk #9, Puppeteer tests chunk #10, Puppeteer tests chunk #11, Puppeteer tests chunk #12, Puppeteer tests chunk #13, Puppeteer tests chunk #14, Upload Storybook to Chromatic, Test (all), Build, Enterprise build, Test (client/web), Test (client/browser), Test (client/jetbrains), Build TS, ESLint (all), Stylelint (all)
-  - **Go checks**: Test (all), Test (enterprise/internal/insights), Test (internal/database), Test (internal/repos), Test (enterprise/internal/batches), Test (cmd/frontend), Test (enterprise/internal/database), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (dev/sg), Build
+  - **Go checks**: Test (all), Test (all (gRPC)), Test (enterprise/internal/insights), Test (enterprise/internal/insights (gRPC)), Test (internal/repos), Test (internal/repos (gRPC)), Test (enterprise/internal/batches), Test (enterprise/internal/batches (gRPC)), Test (cmd/frontend), Test (cmd/frontend (gRPC)), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Test (dev/sg), Test (dev/sg (gRPC)), Test (internal/database), Test (enterprise/internal/database), Build
   - Upload build trace
 
 - Pipeline for `DatabaseSchema` changes:
   - **Metadata**: Pipeline metadata
-  - **DB backcompat tests**: Backcompat test (all), Backcompat test (enterprise/internal/insights), Backcompat test (internal/database), Backcompat test (internal/repos), Backcompat test (enterprise/internal/batches), Backcompat test (cmd/frontend), Backcompat test (enterprise/internal/database), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (dev/sg)
+  - **DB backcompat tests**: Backcompat test (all), Backcompat test (all (gRPC)), Backcompat test (enterprise/internal/insights), Backcompat test (enterprise/internal/insights (gRPC)), Backcompat test (internal/repos), Backcompat test (internal/repos (gRPC)), Backcompat test (enterprise/internal/batches), Backcompat test (enterprise/internal/batches (gRPC)), Backcompat test (cmd/frontend), Backcompat test (cmd/frontend (gRPC)), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Backcompat test (dev/sg), Backcompat test (dev/sg (gRPC)), Backcompat test (internal/database), Backcompat test (enterprise/internal/database)
   - Upload build trace
 
 - Pipeline for `Docs` changes:
@@ -182,10 +182,10 @@ Base pipeline (more steps might be included based on branch changes):
 - **Image security scans**: Scan alpine-3.14, Scan cadvisor, Scan codeinsights-db, Scan codeintel-db, Scan frontend, Scan github-proxy, Scan gitserver, Scan grafana, Scan indexed-searcher, Scan jaeger-agent, Scan jaeger-all-in-one, Scan blobstore2, Scan node-exporter, Scan postgres-12-alpine, Scan postgres_exporter, Scan precise-code-intel-worker, Scan prometheus, Scan prometheus-gcp, Scan redis-cache, Scan redis-store, Scan redis_exporter, Scan repo-updater, Scan search-indexer, Scan searcher, Scan symbols, Scan syntax-highlighter, Scan worker, Scan migrator, Scan executor, Scan executor-vm, Scan batcheshelper, Scan opentelemetry-collector, Scan sg
 - **Linters and static analysis**: GraphQL lint, Run sg lint
 - **Client checks**: Puppeteer tests prep, Puppeteer tests for chrome extension, Puppeteer tests chunk #1, Puppeteer tests chunk #2, Puppeteer tests chunk #3, Puppeteer tests chunk #4, Puppeteer tests chunk #5, Puppeteer tests chunk #6, Puppeteer tests chunk #7, Puppeteer tests chunk #8, Puppeteer tests chunk #9, Puppeteer tests chunk #10, Puppeteer tests chunk #11, Puppeteer tests chunk #12, Puppeteer tests chunk #13, Puppeteer tests chunk #14, Upload Storybook to Chromatic, Test (all), Build, Enterprise build, Test (client/web), Test (client/browser), Test (client/jetbrains), Build TS, ESLint (all), Stylelint (all)
-- **Go checks**: Test (all), Test (enterprise/internal/insights), Test (internal/database), Test (internal/repos), Test (enterprise/internal/batches), Test (cmd/frontend), Test (enterprise/internal/database), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (dev/sg), Build
-- **DB backcompat tests**: Backcompat test (all), Backcompat test (enterprise/internal/insights), Backcompat test (internal/database), Backcompat test (internal/repos), Backcompat test (enterprise/internal/batches), Backcompat test (cmd/frontend), Backcompat test (enterprise/internal/database), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (dev/sg)
+- **Go checks**: Test (all), Test (all (gRPC)), Test (enterprise/internal/insights), Test (enterprise/internal/insights (gRPC)), Test (internal/repos), Test (internal/repos (gRPC)), Test (enterprise/internal/batches), Test (enterprise/internal/batches (gRPC)), Test (cmd/frontend), Test (cmd/frontend (gRPC)), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Test (dev/sg), Test (dev/sg (gRPC)), Test (internal/database), Test (enterprise/internal/database), Build
+- **DB backcompat tests**: Backcompat test (all), Backcompat test (all (gRPC)), Backcompat test (enterprise/internal/insights), Backcompat test (enterprise/internal/insights (gRPC)), Backcompat test (internal/repos), Backcompat test (internal/repos (gRPC)), Backcompat test (enterprise/internal/batches), Backcompat test (enterprise/internal/batches (gRPC)), Backcompat test (cmd/frontend), Backcompat test (cmd/frontend (gRPC)), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Backcompat test (dev/sg), Backcompat test (dev/sg (gRPC)), Backcompat test (internal/database), Backcompat test (enterprise/internal/database)
 - **CI script tests**: test-trace-command.sh
-- **Integration tests**: Backend integration tests, Code Intel QA
+- **Integration tests**: Backend integration tests (gRPC), Backend integration tests, Code Intel QA
 - **End-to-end tests**: Executors E2E, Sourcegraph E2E, Sourcegraph QA, Sourcegraph Cluster (deploy-sourcegraph) QA, Sourcegraph Upgrade
 - **Publish images**: alpine-3.14, cadvisor, codeinsights-db, codeintel-db, frontend, github-proxy, gitserver, grafana, indexed-searcher, jaeger-agent, jaeger-all-in-one, blobstore, blobstore2, node-exporter, postgres-12-alpine, postgres_exporter, precise-code-intel-worker, prometheus, prometheus-gcp, redis-cache, redis-store, redis_exporter, repo-updater, search-indexer, searcher, symbols, syntax-highlighter, worker, migrator, executor, executor-vm, batcheshelper, opentelemetry-collector, server, sg, Publish executor image, Publish executor binary, Publish docker registry mirror image
 - Upload build trace
@@ -202,10 +202,10 @@ Base pipeline (more steps might be included based on branch changes):
 - **Image security scans**: Scan alpine-3.14, Scan cadvisor, Scan codeinsights-db, Scan codeintel-db, Scan frontend, Scan github-proxy, Scan gitserver, Scan grafana, Scan indexed-searcher, Scan jaeger-agent, Scan jaeger-all-in-one, Scan blobstore2, Scan node-exporter, Scan postgres-12-alpine, Scan postgres_exporter, Scan precise-code-intel-worker, Scan prometheus, Scan prometheus-gcp, Scan redis-cache, Scan redis-store, Scan redis_exporter, Scan repo-updater, Scan search-indexer, Scan searcher, Scan symbols, Scan syntax-highlighter, Scan worker, Scan migrator, Scan executor, Scan executor-vm, Scan batcheshelper, Scan opentelemetry-collector, Scan sg
 - **Linters and static analysis**: GraphQL lint, Run sg lint
 - **Client checks**: Puppeteer tests prep, Puppeteer tests for chrome extension, Puppeteer tests chunk #1, Puppeteer tests chunk #2, Puppeteer tests chunk #3, Puppeteer tests chunk #4, Puppeteer tests chunk #5, Puppeteer tests chunk #6, Puppeteer tests chunk #7, Puppeteer tests chunk #8, Puppeteer tests chunk #9, Puppeteer tests chunk #10, Puppeteer tests chunk #11, Puppeteer tests chunk #12, Puppeteer tests chunk #13, Puppeteer tests chunk #14, Upload Storybook to Chromatic, Test (all), Build, Enterprise build, Test (client/web), Test (client/browser), Test (client/jetbrains), Build TS, ESLint (all), Stylelint (all)
-- **Go checks**: Test (all), Test (enterprise/internal/insights), Test (internal/database), Test (internal/repos), Test (enterprise/internal/batches), Test (cmd/frontend), Test (enterprise/internal/database), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (dev/sg), Build
-- **DB backcompat tests**: Backcompat test (all), Backcompat test (enterprise/internal/insights), Backcompat test (internal/database), Backcompat test (internal/repos), Backcompat test (enterprise/internal/batches), Backcompat test (cmd/frontend), Backcompat test (enterprise/internal/database), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (dev/sg)
+- **Go checks**: Test (all), Test (all (gRPC)), Test (enterprise/internal/insights), Test (enterprise/internal/insights (gRPC)), Test (internal/repos), Test (internal/repos (gRPC)), Test (enterprise/internal/batches), Test (enterprise/internal/batches (gRPC)), Test (cmd/frontend), Test (cmd/frontend (gRPC)), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Test (dev/sg), Test (dev/sg (gRPC)), Test (internal/database), Test (enterprise/internal/database), Build
+- **DB backcompat tests**: Backcompat test (all), Backcompat test (all (gRPC)), Backcompat test (enterprise/internal/insights), Backcompat test (enterprise/internal/insights (gRPC)), Backcompat test (internal/repos), Backcompat test (internal/repos (gRPC)), Backcompat test (enterprise/internal/batches), Backcompat test (enterprise/internal/batches (gRPC)), Backcompat test (cmd/frontend), Backcompat test (cmd/frontend (gRPC)), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Backcompat test (dev/sg), Backcompat test (dev/sg (gRPC)), Backcompat test (internal/database), Backcompat test (enterprise/internal/database)
 - **CI script tests**: test-trace-command.sh
-- **Integration tests**: Backend integration tests, Code Intel QA
+- **Integration tests**: Backend integration tests (gRPC), Backend integration tests, Code Intel QA
 - **End-to-end tests**: Executors E2E, Sourcegraph E2E, Sourcegraph QA, Sourcegraph Cluster (deploy-sourcegraph) QA, Sourcegraph Upgrade
 - **Publish images**: alpine-3.14, cadvisor, codeinsights-db, codeintel-db, frontend, github-proxy, gitserver, grafana, indexed-searcher, jaeger-agent, jaeger-all-in-one, blobstore, blobstore2, node-exporter, postgres-12-alpine, postgres_exporter, precise-code-intel-worker, prometheus, prometheus-gcp, redis-cache, redis-store, redis_exporter, repo-updater, search-indexer, searcher, symbols, syntax-highlighter, worker, migrator, executor, executor-vm, batcheshelper, opentelemetry-collector, server, sg
 - Upload build trace
@@ -251,10 +251,10 @@ Base pipeline (more steps might be included based on branch changes):
 - **Image security scans**: Scan alpine-3.14, Scan cadvisor, Scan codeinsights-db, Scan codeintel-db, Scan frontend, Scan github-proxy, Scan gitserver, Scan grafana, Scan indexed-searcher, Scan jaeger-agent, Scan jaeger-all-in-one, Scan blobstore2, Scan node-exporter, Scan postgres-12-alpine, Scan postgres_exporter, Scan precise-code-intel-worker, Scan prometheus, Scan prometheus-gcp, Scan redis-cache, Scan redis-store, Scan redis_exporter, Scan repo-updater, Scan search-indexer, Scan searcher, Scan symbols, Scan syntax-highlighter, Scan worker, Scan migrator, Scan executor, Scan executor-vm, Scan batcheshelper, Scan opentelemetry-collector, Scan sg
 - **Linters and static analysis**: GraphQL lint, Run sg lint
 - **Client checks**: Puppeteer tests prep, Puppeteer tests for chrome extension, Puppeteer tests chunk #1, Puppeteer tests chunk #2, Puppeteer tests chunk #3, Puppeteer tests chunk #4, Puppeteer tests chunk #5, Puppeteer tests chunk #6, Puppeteer tests chunk #7, Puppeteer tests chunk #8, Puppeteer tests chunk #9, Puppeteer tests chunk #10, Puppeteer tests chunk #11, Puppeteer tests chunk #12, Puppeteer tests chunk #13, Puppeteer tests chunk #14, Upload Storybook to Chromatic, Test (all), Build, Enterprise build, Test (client/web), Test (client/browser), Test (client/jetbrains), Build TS, ESLint (all), Stylelint (all)
-- **Go checks**: Test (all), Test (enterprise/internal/insights), Test (internal/database), Test (internal/repos), Test (enterprise/internal/batches), Test (cmd/frontend), Test (enterprise/internal/database), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (dev/sg), Build
-- **DB backcompat tests**: Backcompat test (all), Backcompat test (enterprise/internal/insights), Backcompat test (internal/database), Backcompat test (internal/repos), Backcompat test (enterprise/internal/batches), Backcompat test (cmd/frontend), Backcompat test (enterprise/internal/database), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (dev/sg)
+- **Go checks**: Test (all), Test (all (gRPC)), Test (enterprise/internal/insights), Test (enterprise/internal/insights (gRPC)), Test (internal/repos), Test (internal/repos (gRPC)), Test (enterprise/internal/batches), Test (enterprise/internal/batches (gRPC)), Test (cmd/frontend), Test (cmd/frontend (gRPC)), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Test (dev/sg), Test (dev/sg (gRPC)), Test (internal/database), Test (enterprise/internal/database), Build
+- **DB backcompat tests**: Backcompat test (all), Backcompat test (all (gRPC)), Backcompat test (enterprise/internal/insights), Backcompat test (enterprise/internal/insights (gRPC)), Backcompat test (internal/repos), Backcompat test (internal/repos (gRPC)), Backcompat test (enterprise/internal/batches), Backcompat test (enterprise/internal/batches (gRPC)), Backcompat test (cmd/frontend), Backcompat test (cmd/frontend (gRPC)), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Backcompat test (dev/sg), Backcompat test (dev/sg (gRPC)), Backcompat test (internal/database), Backcompat test (enterprise/internal/database)
 - **CI script tests**: test-trace-command.sh
-- **Integration tests**: Backend integration tests, Code Intel QA
+- **Integration tests**: Backend integration tests (gRPC), Backend integration tests, Code Intel QA
 - **End-to-end tests**: Executors E2E, Sourcegraph E2E, Sourcegraph QA, Sourcegraph Cluster (deploy-sourcegraph) QA, Sourcegraph Upgrade
 - **Publish images**: alpine-3.14, cadvisor, codeinsights-db, codeintel-db, frontend, github-proxy, gitserver, grafana, indexed-searcher, jaeger-agent, jaeger-all-in-one, blobstore, blobstore2, node-exporter, postgres-12-alpine, postgres_exporter, precise-code-intel-worker, prometheus, prometheus-gcp, redis-cache, redis-store, redis_exporter, repo-updater, search-indexer, searcher, symbols, syntax-highlighter, worker, migrator, executor, executor-vm, batcheshelper, opentelemetry-collector, server, sg, Publish executor image, Publish executor binary
 - Upload build trace
@@ -276,10 +276,10 @@ Base pipeline (more steps might be included based on branch changes):
 - **Image security scans**: Scan alpine-3.14, Scan cadvisor, Scan codeinsights-db, Scan codeintel-db, Scan frontend, Scan github-proxy, Scan gitserver, Scan grafana, Scan indexed-searcher, Scan jaeger-agent, Scan jaeger-all-in-one, Scan blobstore2, Scan node-exporter, Scan postgres-12-alpine, Scan postgres_exporter, Scan precise-code-intel-worker, Scan prometheus, Scan prometheus-gcp, Scan redis-cache, Scan redis-store, Scan redis_exporter, Scan repo-updater, Scan search-indexer, Scan searcher, Scan symbols, Scan syntax-highlighter, Scan worker, Scan migrator, Scan executor, Scan executor-vm, Scan batcheshelper, Scan opentelemetry-collector, Scan sg
 - **Linters and static analysis**: GraphQL lint, Run sg lint
 - **Client checks**: Puppeteer tests prep, Puppeteer tests for chrome extension, Puppeteer tests chunk #1, Puppeteer tests chunk #2, Puppeteer tests chunk #3, Puppeteer tests chunk #4, Puppeteer tests chunk #5, Puppeteer tests chunk #6, Puppeteer tests chunk #7, Puppeteer tests chunk #8, Puppeteer tests chunk #9, Puppeteer tests chunk #10, Puppeteer tests chunk #11, Puppeteer tests chunk #12, Puppeteer tests chunk #13, Puppeteer tests chunk #14, Upload Storybook to Chromatic, Test (all), Build, Enterprise build, Test (client/web), Test (client/browser), Test (client/jetbrains), Build TS, ESLint (all), Stylelint (all)
-- **Go checks**: Test (all), Test (enterprise/internal/insights), Test (internal/database), Test (internal/repos), Test (enterprise/internal/batches), Test (cmd/frontend), Test (enterprise/internal/database), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (dev/sg), Build
-- **DB backcompat tests**: Backcompat test (all), Backcompat test (enterprise/internal/insights), Backcompat test (internal/database), Backcompat test (internal/repos), Backcompat test (enterprise/internal/batches), Backcompat test (cmd/frontend), Backcompat test (enterprise/internal/database), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (dev/sg)
+- **Go checks**: Test (all), Test (all (gRPC)), Test (enterprise/internal/insights), Test (enterprise/internal/insights (gRPC)), Test (internal/repos), Test (internal/repos (gRPC)), Test (enterprise/internal/batches), Test (enterprise/internal/batches (gRPC)), Test (cmd/frontend), Test (cmd/frontend (gRPC)), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Test (dev/sg), Test (dev/sg (gRPC)), Test (internal/database), Test (enterprise/internal/database), Build
+- **DB backcompat tests**: Backcompat test (all), Backcompat test (all (gRPC)), Backcompat test (enterprise/internal/insights), Backcompat test (enterprise/internal/insights (gRPC)), Backcompat test (internal/repos), Backcompat test (internal/repos (gRPC)), Backcompat test (enterprise/internal/batches), Backcompat test (enterprise/internal/batches (gRPC)), Backcompat test (cmd/frontend), Backcompat test (cmd/frontend (gRPC)), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Backcompat test (dev/sg), Backcompat test (dev/sg (gRPC)), Backcompat test (internal/database), Backcompat test (enterprise/internal/database)
 - **CI script tests**: test-trace-command.sh
-- **Integration tests**: Backend integration tests, Code Intel QA
+- **Integration tests**: Backend integration tests (gRPC), Backend integration tests, Code Intel QA
 - **End-to-end tests**: Executors E2E, Sourcegraph E2E, Sourcegraph QA, Sourcegraph Cluster (deploy-sourcegraph) QA, Sourcegraph Upgrade
 - **Publish images**: alpine-3.14, cadvisor, codeinsights-db, codeintel-db, frontend, github-proxy, gitserver, grafana, indexed-searcher, jaeger-agent, jaeger-all-in-one, blobstore, blobstore2, node-exporter, postgres-12-alpine, postgres_exporter, precise-code-intel-worker, prometheus, prometheus-gcp, redis-cache, redis-store, redis_exporter, repo-updater, search-indexer, searcher, symbols, syntax-highlighter, worker, migrator, executor, executor-vm, batcheshelper, opentelemetry-collector, server, sg
 - Upload build trace
@@ -353,8 +353,9 @@ Base pipeline (more steps might be included based on branch changes):
 
 - **Metadata**: Pipeline metadata
 - Build server
+- Backend integration tests (gRPC)
 - Backend integration tests
 - **Linters and static analysis**: Run sg lint
-- **Go checks**: Test (all), Test (enterprise/internal/insights), Test (internal/database), Test (internal/repos), Test (enterprise/internal/batches), Test (cmd/frontend), Test (enterprise/internal/database), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (dev/sg), Build
-- **DB backcompat tests**: Backcompat test (all), Backcompat test (enterprise/internal/insights), Backcompat test (internal/database), Backcompat test (internal/repos), Backcompat test (enterprise/internal/batches), Backcompat test (cmd/frontend), Backcompat test (enterprise/internal/database), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (dev/sg)
+- **Go checks**: Test (all), Test (all (gRPC)), Test (enterprise/internal/insights), Test (enterprise/internal/insights (gRPC)), Test (internal/repos), Test (internal/repos (gRPC)), Test (enterprise/internal/batches), Test (enterprise/internal/batches (gRPC)), Test (cmd/frontend), Test (cmd/frontend (gRPC)), Test (enterprise/cmd/frontend/internal/batches/resolvers), Test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Test (dev/sg), Test (dev/sg (gRPC)), Test (internal/database), Test (enterprise/internal/database), Build
+- **DB backcompat tests**: Backcompat test (all), Backcompat test (all (gRPC)), Backcompat test (enterprise/internal/insights), Backcompat test (enterprise/internal/insights (gRPC)), Backcompat test (internal/repos), Backcompat test (internal/repos (gRPC)), Backcompat test (enterprise/internal/batches), Backcompat test (enterprise/internal/batches (gRPC)), Backcompat test (cmd/frontend), Backcompat test (cmd/frontend (gRPC)), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers), Backcompat test (enterprise/cmd/frontend/internal/batches/resolvers (gRPC)), Backcompat test (dev/sg), Backcompat test (dev/sg (gRPC)), Backcompat test (internal/database), Backcompat test (enterprise/internal/database)
 - Upload build trace
diff --git a/enterprise/dev/ci/internal/ci/operations.go b/enterprise/dev/ci/internal/ci/operations.go
index 828f8523358..e860d58c6fe 100644
--- a/enterprise/dev/ci/internal/ci/operations.go
+++ b/enterprise/dev/ci/internal/ci/operations.go
@@ -436,9 +436,8 @@ func frontendTests(pipeline *bk.Pipeline) {
 
 // Adds the Go test step.
 func addGoTests(pipeline *bk.Pipeline) {
-	buildGoTests(func(description, testSuffix string) {
-		pipeline.AddStep(
-			fmt.Sprintf(":go: Test (%s)", description),
+	buildGoTests(func(description, testSuffix string, additionalOpts ...bk.StepOpt) {
+		opts := []bk.StepOpt{
 			// Max DB connections is set to 200: https://github.com/sourcegraph/infrastructure/blob/main/docker-images/buildkite-agent-stateless/postgresql.conf
 			// Because we run tests concurrently, the following must hold to avoid connection issues:
 			//
@@ -451,6 +450,12 @@ func addGoTests(pipeline *bk.Pipeline) {
 				Annotations: &bk.AnnotationOpts{},
 			}),
 			bk.Cmd("./dev/ci/codecov.sh -c -F go"),
+		}
+		opts = append(opts, additionalOpts...)
+
+		pipeline.AddStep(
+			fmt.Sprintf(":go: Test (%s)", description),
+			opts...,
 		)
 	})
 }
@@ -458,7 +463,7 @@ func addGoTests(pipeline *bk.Pipeline) {
 // Adds the Go backcompat test step.
 func addGoTestsBackcompat(minimumUpgradeableVersion string) func(pipeline *bk.Pipeline) {
 	return func(pipeline *bk.Pipeline) {
-		buildGoTests(func(description, testSuffix string) {
+		buildGoTests(func(description, testSuffix string, additionalOpts ...bk.StepOpt) {
 			pipeline.AddStep(
 				fmt.Sprintf(":go::postgres: Backcompat test (%s)", description),
 				bk.Env("MINIMUM_UPGRADEABLE_VERSION", minimumUpgradeableVersion),
@@ -474,23 +479,41 @@ func addGoTestsBackcompat(minimumUpgradeableVersion string) func(pipeline *bk.Pi
 // be run as part of complete coverage. The description will be the specific test path
 // broken out to be run independently (or "all"), and the testSuffix will be the string
 // to pass to go test to filter test packaes (e.g., "only <pkg>" or "exclude <pkgs...>").
-func buildGoTests(f func(description, testSuffix string)) {
+func buildGoTests(f func(description, testSuffix string, additionalOpts ...bk.StepOpt)) {
 	// This is a bandage solution to speed up the go tests by running the slowest ones
 	// concurrently. As a results, the PR time affecting only Go code is divided by two.
-	slowGoTestPackages := []string{
+
+	// These are the slow packages that we do not want to run twice (once with gRPC, once without).
+	slowGoTestPackagesNonGRPC := []string{
+		"github.com/sourcegraph/sourcegraph/internal/database",            // 253s
+		"github.com/sourcegraph/sourcegraph/enterprise/internal/database", // 94s
+	}
+
+	// These are the slow packages that we _do_ want to run twice (once with gRPC, once without).
+	slowGoTestPackagesGRPC := []string{
 		"github.com/sourcegraph/sourcegraph/enterprise/internal/insights",                       // 82+162s
-		"github.com/sourcegraph/sourcegraph/internal/database",                                  // 253s
 		"github.com/sourcegraph/sourcegraph/internal/repos",                                     // 106s
 		"github.com/sourcegraph/sourcegraph/enterprise/internal/batches",                        // 52 + 60
 		"github.com/sourcegraph/sourcegraph/cmd/frontend",                                       // 100s
-		"github.com/sourcegraph/sourcegraph/enterprise/internal/database",                       // 94s
 		"github.com/sourcegraph/sourcegraph/enterprise/cmd/frontend/internal/batches/resolvers", // 152s
 		"github.com/sourcegraph/sourcegraph/dev/sg",                                             // small, but much more practical to have it in its own job
 	}
 
-	f("all", "exclude "+strings.Join(slowGoTestPackages, " "))
+	allSlowPackages := append(slowGoTestPackagesGRPC, slowGoTestPackagesGRPC...)
+	enableGRPCEnvOpt := bk.Env("SG_FEATURE_FLAG_GRPC", "true")
 
-	for _, slowPkg := range slowGoTestPackages {
+	// Run all tests that aren't slow both with and without gRPC enabled
+	f("all", fmt.Sprintf("exclude %s", strings.Join(allSlowPackages, " ")))
+	f("all (gRPC)", fmt.Sprintf("exclude %s", strings.Join(allSlowPackages, " ")), enableGRPCEnvOpt)
+
+	// Run most slow packages both with and without gRPC
+	for _, slowPkg := range slowGoTestPackagesGRPC {
+		f(strings.ReplaceAll(slowPkg, "github.com/sourcegraph/sourcegraph/", ""), "only "+slowPkg)
+		f(strings.ReplaceAll(slowPkg, "github.com/sourcegraph/sourcegraph/", "")+" (gRPC)", "only "+slowPkg, enableGRPCEnvOpt)
+	}
+
+	// These packages won't benefit from duplicating the tests with gRPC enabled, so only run them once.
+	for _, slowPkg := range slowGoTestPackagesNonGRPC {
 		f(strings.ReplaceAll(slowPkg, "github.com/sourcegraph/sourcegraph/", ""), "only "+slowPkg)
 	}
 }
@@ -507,13 +530,21 @@ func addGoBuild(pipeline *bk.Pipeline) {
 // Runtime: ~11m
 func backendIntegrationTests(candidateImageTag string) operations.Operation {
 	return func(pipeline *bk.Pipeline) {
-		pipeline.AddStep(":chains: Backend integration tests",
-			// Run tests against the candidate server image
-			bk.DependsOn(candidateImageStepKey("server")),
-			bk.Env("IMAGE",
-				images.DevRegistryImage("server", candidateImageTag)),
-			bk.Cmd("dev/ci/integration/backend/run.sh"),
-			bk.ArtifactPaths("./*.log"))
+		for _, enableGRPC := range []bool{true, false} {
+			description := ":chains: Backend integration tests"
+			if enableGRPC {
+				description += " (gRPC)"
+			}
+			pipeline.AddStep(
+				description,
+				// Run tests against the candidate server image
+				bk.DependsOn(candidateImageStepKey("server")),
+				bk.Env("IMAGE",
+					images.DevRegistryImage("server", candidateImageTag)),
+				bk.Env("SG_FEATURE_FLAG_GRPC", strconv.FormatBool(enableGRPC)),
+				bk.Cmd("dev/ci/integration/backend/run.sh"),
+				bk.ArtifactPaths("./*.log"))
+		}
 	}
 }
 
diff --git a/internal/gitserver/client.go b/internal/gitserver/client.go
index 19f37e90a6b..2588da9d480 100644
--- a/internal/gitserver/client.go
+++ b/internal/gitserver/client.go
@@ -31,18 +31,17 @@ import (
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 
-	sglog "github.com/sourcegraph/log"
-
 	"github.com/sourcegraph/go-diff/diff"
+	sglog "github.com/sourcegraph/log"
 
 	"github.com/sourcegraph/sourcegraph/internal/actor"
 	"github.com/sourcegraph/sourcegraph/internal/api"
 	"github.com/sourcegraph/sourcegraph/internal/authz"
 	"github.com/sourcegraph/sourcegraph/internal/conf"
-	"github.com/sourcegraph/sourcegraph/internal/featureflag"
 	"github.com/sourcegraph/sourcegraph/internal/gitserver/gitdomain"
 	"github.com/sourcegraph/sourcegraph/internal/gitserver/protocol"
 	proto "github.com/sourcegraph/sourcegraph/internal/gitserver/v1"
+	internalgrpc "github.com/sourcegraph/sourcegraph/internal/grpc"
 	"github.com/sourcegraph/sourcegraph/internal/grpc/defaults"
 	"github.com/sourcegraph/sourcegraph/internal/grpc/streamio"
 	"github.com/sourcegraph/sourcegraph/internal/httpcli"
@@ -586,7 +585,7 @@ func (c *RemoteGitCommand) sendExec(ctx context.Context) (_ io.ReadCloser, errRe
 		return nil, err
 	}
 
-	if featureflag.FromContext(ctx).GetBoolOr("grpc", false) {
+	if internalgrpc.IsGRPCEnabled(ctx) {
 		req := &proto.ExecRequest{
 			Repo:           string(repoName),
 			EnsureRevision: c.EnsureRevision(),
@@ -613,7 +612,6 @@ func (c *RemoteGitCommand) sendExec(ctx context.Context) (_ io.ReadCloser, errRe
 		r := streamio.NewReader(func() ([]byte, error) {
 			msg, err := stream.Recv()
 			if err != nil {
-
 				return nil, err
 			}
 			return msg.GetData(), nil
diff --git a/internal/grpc/grpc.go b/internal/grpc/grpc.go
index 595f2c6d79a..a348a2f5c71 100644
--- a/internal/grpc/grpc.go
+++ b/internal/grpc/grpc.go
@@ -2,12 +2,17 @@
 package grpc
 
 import (
+	"context"
 	"net/http"
+	"os"
+	"strconv"
 	"strings"
 
 	"golang.org/x/net/http2"
 	"golang.org/x/net/http2/h2c"
 	"google.golang.org/grpc"
+
+	"github.com/sourcegraph/sourcegraph/internal/featureflag"
 )
 
 // MultiplexHandlers takes a gRPC server and a plain HTTP handler and multiplexes the
@@ -27,3 +32,12 @@ func MultiplexHandlers(grpcServer *grpc.Server, httpHandler http.Handler) http.H
 	// h2s protocol, so this hijacks h2s requests and handles them correctly.
 	return h2c.NewHandler(newHandler, &http2.Server{})
 }
+
+const envGRPCEnabled = "SG_FEATURE_FLAG_GRPC"
+
+func IsGRPCEnabled(ctx context.Context) bool {
+	if val, err := strconv.ParseBool(os.Getenv(envGRPCEnabled)); err == nil {
+		return val
+	}
+	return featureflag.FromContext(ctx).GetBoolOr("grpc", false)
+}
diff --git a/internal/grpc/grpc_test.go b/internal/grpc/grpc_test.go
index 8367e6558b2..5dae4a333ff 100644
--- a/internal/grpc/grpc_test.go
+++ b/internal/grpc/grpc_test.go
@@ -2,6 +2,7 @@ package grpc
 
 import (
 	"bytes"
+	"context"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -37,3 +38,20 @@ func TestMultiplexHandlers(t *testing.T) {
 		require.False(t, called)
 	}
 }
+
+func TestIsGRPCEnabled(t *testing.T) {
+	t.Setenv(envGRPCEnabled, "true")
+	if !IsGRPCEnabled(context.Background()) {
+		t.Fatal("expected grpc to be enabled")
+	}
+
+	t.Setenv(envGRPCEnabled, "false")
+	if IsGRPCEnabled(context.Background()) {
+		t.Fatal("expected grpc to not be enabled")
+	}
+
+	t.Setenv(envGRPCEnabled, "")
+	if IsGRPCEnabled(context.Background()) {
+		t.Fatal("expected grpc to not be enabled")
+	}
+}
diff --git a/internal/search/searcher/search.go b/internal/search/searcher/search.go
index c642b358023..50b8b8e6226 100644
--- a/internal/search/searcher/search.go
+++ b/internal/search/searcher/search.go
@@ -15,8 +15,8 @@ import (
 	"github.com/sourcegraph/sourcegraph/internal/api"
 	"github.com/sourcegraph/sourcegraph/internal/endpoint"
 	"github.com/sourcegraph/sourcegraph/internal/errcode"
-	"github.com/sourcegraph/sourcegraph/internal/featureflag"
 	"github.com/sourcegraph/sourcegraph/internal/gitserver"
+	internalgrpc "github.com/sourcegraph/sourcegraph/internal/grpc"
 	"github.com/sourcegraph/sourcegraph/internal/mutablelimiter"
 	"github.com/sourcegraph/sourcegraph/internal/search"
 	"github.com/sourcegraph/sourcegraph/internal/search/job"
@@ -197,7 +197,7 @@ func (s *TextSearchJob) searchFilesInRepo(
 		return false, err
 	}
 
-	if featureflag.FromContext(ctx).GetBoolOr("grpc", false) {
+	if internalgrpc.IsGRPCEnabled(ctx) {
 		onMatches := func(searcherMatch *proto.FileMatch) {
 			stream.Send(streaming.SearchEvent{
 				Results: []result.Match{convertProtoMatch(repo, commit, &rev, searcherMatch, s.PathRegexps)},
@@ -219,7 +219,7 @@ func (s *TextSearchJob) searchFilesInRepo(
 		})
 	}
 
-	if featureflag.FromContext(ctx).GetBoolOr("grpc", false) {
+	if internalgrpc.IsGRPCEnabled(ctx) {
 		return SearchGRPC(ctx, searcherURLs, gitserverRepo, repo.ID, rev, commit, index, info, fetchTimeout, s.Features, onMatchGRPC)
 	} else {
 		return Search(ctx, searcherURLs, gitserverRepo, repo.ID, rev, commit, index, info, fetchTimeout, s.Features, onMatches)
diff --git a/internal/symbols/client.go b/internal/symbols/client.go
index 38f4a64ff15..031125d0a7a 100644
--- a/internal/symbols/client.go
+++ b/internal/symbols/client.go
@@ -23,7 +23,7 @@ import (
 	"github.com/sourcegraph/sourcegraph/internal/authz"
 	"github.com/sourcegraph/sourcegraph/internal/conf/conftypes"
 	"github.com/sourcegraph/sourcegraph/internal/endpoint"
-	"github.com/sourcegraph/sourcegraph/internal/featureflag"
+	internalgrpc "github.com/sourcegraph/sourcegraph/internal/grpc"
 	"github.com/sourcegraph/sourcegraph/internal/grpc/defaults"
 	"github.com/sourcegraph/sourcegraph/internal/httpcli"
 	"github.com/sourcegraph/sourcegraph/internal/resetonce"
@@ -93,7 +93,7 @@ func (c *Client) ListLanguageMappings(ctx context.Context, repo api.RepoName) (_
 	c.langMappingOnce.Do(func() {
 		var mappings map[string][]string
 
-		if c.isGRPCEnabled(ctx) {
+		if internalgrpc.IsGRPCEnabled(ctx) {
 			mappings, err = c.listLanguageMappingsGRPC(ctx, repo)
 		} else {
 			mappings, err = c.listLanguageMappingsJSON(ctx, repo)
@@ -192,7 +192,7 @@ func (c *Client) Search(ctx context.Context, args search.SymbolsParameters) (sym
 
 	var response search.SymbolsResponse
 
-	if c.isGRPCEnabled(ctx) {
+	if internalgrpc.IsGRPCEnabled(ctx) {
 		response, err = c.searchGRPC(ctx, args)
 	} else {
 		response, err = c.searchJSON(ctx, args)
@@ -298,7 +298,7 @@ func (c *Client) LocalCodeIntel(ctx context.Context, args types.RepoCommitPath)
 	span.SetTag("Repo", args.Repo)
 	span.SetTag("CommitID", args.Commit)
 
-	if c.isGRPCEnabled(ctx) {
+	if internalgrpc.IsGRPCEnabled(ctx) {
 		return c.localCodeIntelGRPC(ctx, args)
 	}
 
@@ -365,7 +365,7 @@ func (c *Client) SymbolInfo(ctx context.Context, args types.RepoCommitPathPoint)
 	span.SetTag("Repo", args.Repo)
 	span.SetTag("CommitID", args.Commit)
 
-	if c.isGRPCEnabled(ctx) {
+	if internalgrpc.IsGRPCEnabled(ctx) {
 		result, err = c.symbolInfoGRPC(ctx, args)
 	} else {
 		result, err = c.symbolInfoJSON(ctx, args)
@@ -528,7 +528,3 @@ func (c *Client) dialGRPC(ctx context.Context, repository api.RepoName) (*grpc.C
 
 	return conn, nil
 }
-
-func (c *Client) isGRPCEnabled(ctx context.Context) bool {
-	return featureflag.FromContext(ctx).GetBoolOr("grpc", false)
-}
diff --git a/internal/symbols/client_test.go b/internal/symbols/client_test.go
index c24ff1038ff..935ccd89813 100644
--- a/internal/symbols/client_test.go
+++ b/internal/symbols/client_test.go
@@ -7,12 +7,21 @@ import (
 	"net/http/httptest"
 	"testing"
 
+	"github.com/sourcegraph/log"
+	"github.com/sourcegraph/log/logtest"
+	"google.golang.org/grpc"
+
 	"github.com/sourcegraph/sourcegraph/internal/actor"
 	"github.com/sourcegraph/sourcegraph/internal/authz"
 	"github.com/sourcegraph/sourcegraph/internal/endpoint"
+	internalgrpc "github.com/sourcegraph/sourcegraph/internal/grpc"
+	"github.com/sourcegraph/sourcegraph/internal/grpc/defaults"
 	"github.com/sourcegraph/sourcegraph/internal/search"
 	"github.com/sourcegraph/sourcegraph/internal/search/result"
 	"github.com/sourcegraph/sourcegraph/internal/types"
+	"github.com/sourcegraph/sourcegraph/lib/errors"
+
+	proto "github.com/sourcegraph/sourcegraph/internal/symbols/v1"
 )
 
 func init() {
@@ -32,12 +41,27 @@ func TestSearchWithFiltering(t *testing.T) {
 				Path: "file2",
 			},
 		}}
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		json.NewEncoder(w).Encode(fixture)
-	}))
+
+	mockServer := &mockSymbolsServer{
+		mockSearchGRPC: func(_ context.Context, _ *proto.SearchRequest) (*proto.SearchResponse, error) {
+			var response proto.SearchResponse
+			response.FromInternal(&fixture)
+
+			return &response, nil
+		},
+
+		restHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			json.NewEncoder(w).Encode(fixture)
+		}),
+	}
+
+	handler, cleanup := mockServer.NewHandler(logtest.Scoped(t))
+	srv := httptest.NewServer(handler)
 	t.Cleanup(func() {
 		srv.Close()
+		cleanup()
 	})
+
 	DefaultClient.Endpoints = endpoint.Static(srv.URL)
 
 	results, err := DefaultClient.Search(ctx, search.SymbolsParameters{
@@ -111,16 +135,34 @@ func TestDefinitionWithFiltering(t *testing.T) {
 		Point: types.Point{Row: 0, Column: 0},
 	}
 
-	// Start an HTTP server that responds with path1.
-	ctx := context.Background()
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		json.NewEncoder(w).Encode(path1)
-	}))
+	mockServer := &mockSymbolsServer{
+		mockSymbolInfoGRPC: func(_ context.Context, _ *proto.SymbolInfoRequest) (*proto.SymbolInfoResponse, error) {
+			var info types.SymbolInfo
+			info.Definition.RepoCommitPath = path1.RepoCommitPath
+
+			var response proto.SymbolInfoResponse
+			response.FromInternal(&info)
+
+			return &response, nil
+		},
+
+		restHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			json.NewEncoder(w).Encode(path1)
+		}),
+	}
+
+	// Create a new HTTP server that response with path1.
+	handler, cleanup := mockServer.NewHandler(logtest.Scoped(t))
+	srv := httptest.NewServer(handler)
 	t.Cleanup(func() {
 		srv.Close()
+		cleanup()
 	})
+
 	DefaultClient.Endpoints = endpoint.Static(srv.URL)
 
+	ctx := context.Background()
+
 	// Request path1.
 	results, err := DefaultClient.SymbolInfo(ctx, path2)
 	if err != nil {
@@ -152,3 +194,81 @@ func TestDefinitionWithFiltering(t *testing.T) {
 		t.Fatal("expected nil result when getting a definition for an unauthorized path")
 	}
 }
+
+type mockSymbolsServer struct {
+	mockSearchGRPC         func(ctx context.Context, request *proto.SearchRequest) (*proto.SearchResponse, error)
+	mockLocalCodeIntelGRPC func(ctx context.Context, request *proto.LocalCodeIntelRequest) (*proto.LocalCodeIntelResponse, error)
+	mockListLanguagesGRPC  func(ctx context.Context, request *proto.ListLanguagesRequest) (*proto.ListLanguagesResponse, error)
+	mockSymbolInfoGRPC     func(ctx context.Context, request *proto.SymbolInfoRequest) (*proto.SymbolInfoResponse, error)
+	mockHealthzGRPC        func(ctx context.Context, request *proto.HealthzRequest) (*proto.HealthzResponse, error)
+
+	restHandler http.Handler
+
+	proto.UnimplementedSymbolsServiceServer
+}
+
+func (m *mockSymbolsServer) NewHandler(l log.Logger) (handler http.Handler, cleanup func()) {
+	grpcServer := grpc.NewServer(
+		defaults.ServerOptions(l)...,
+	)
+
+	grpcServer.RegisterService(&proto.SymbolsService_ServiceDesc, m)
+
+	handler = internalgrpc.MultiplexHandlers(grpcServer, http.HandlerFunc(m.serveRestHandler))
+	cleanup = func() {
+		grpcServer.Stop()
+	}
+
+	return handler, cleanup
+}
+
+func (m *mockSymbolsServer) serveRestHandler(w http.ResponseWriter, r *http.Request) {
+	if m.restHandler != nil {
+		m.restHandler.ServeHTTP(w, r)
+		return
+	}
+
+	http.Error(w, "not implemented", http.StatusNotImplemented)
+}
+
+func (m *mockSymbolsServer) Search(ctx context.Context, r *proto.SearchRequest) (*proto.SearchResponse, error) {
+	if m.mockSearchGRPC != nil {
+		return m.mockSearchGRPC(ctx, r)
+	}
+
+	return nil, errors.Newf("grpc: method %q not implemented", "Search")
+}
+
+func (m *mockSymbolsServer) LocalCodeIntel(ctx context.Context, r *proto.LocalCodeIntelRequest) (*proto.LocalCodeIntelResponse, error) {
+	if m.mockLocalCodeIntelGRPC != nil {
+		return m.LocalCodeIntel(ctx, r)
+	}
+
+	return nil, errors.Newf("grpc: method %q not implemented", "LocalCodeIntel")
+}
+
+func (m *mockSymbolsServer) ListLanguages(ctx context.Context, r *proto.ListLanguagesRequest) (*proto.ListLanguagesResponse, error) {
+	if m.mockListLanguagesGRPC != nil {
+		return m.mockListLanguagesGRPC(ctx, r)
+	}
+
+	return nil, errors.Newf("grpc: method %q not implemented", "ListLanguages")
+}
+
+func (m *mockSymbolsServer) SymbolInfo(ctx context.Context, r *proto.SymbolInfoRequest) (*proto.SymbolInfoResponse, error) {
+	if m.mockSymbolInfoGRPC != nil {
+		return m.mockSymbolInfoGRPC(ctx, r)
+	}
+
+	return nil, errors.Newf("grpc: method %q not implemented", "SymbolInfo")
+}
+
+func (m *mockSymbolsServer) Healthz(ctx context.Context, r *proto.HealthzRequest) (*proto.HealthzResponse, error) {
+	if m.mockHealthzGRPC != nil {
+		return m.mockHealthzGRPC(ctx, r)
+	}
+
+	return nil, errors.Newf("grpc: method %q not implemented", "Healthz")
+}
+
+var _ proto.SymbolsServiceServer = &mockSymbolsServer{}