diff --git a/.github/actions-rs/grcov.yml b/.github/actions-rs/grcov.yml
new file mode 100644
index 000000000..be95504da
--- /dev/null
+++ b/.github/actions-rs/grcov.yml
@@ -0,0 +1,12 @@
+binary-path: ./target/debug/deps/
+branch: true
+ignore:
+  - "../*"
+  - "/*"
+  - "mobilecoin/*"
+  - "target/*"
+  - "*/e2e_tests/*"
+ignore-not-existing: true
+output-type: lcov
+output-path: ./tests.lcov
+source-dir: .
\ No newline at end of file
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0aa352e4e..fd68c2cef 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -90,6 +90,29 @@ jobs:
           INGEST_SIGSTRUCT_URI=$(curl -s https://enclave-distribution.test.mobilecoin.com/production.json | grep ingest-enclave.css | awk '{print $2}' | tr -d \" | tr -d ,)
           (cd /var/tmp && curl -O https://enclave-distribution.test.mobilecoin.com/${INGEST_SIGSTRUCT_URI})
 
-      - name: Cargo Test
-        run: |
-          cargo test
\ No newline at end of file
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly-2022-04-29
+          override: true
+          components: llvm-tools-preview
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+        env:
+          CARGO_INCREMENTAL: '0'
+          RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
+          RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
+
+      - id: coverage
+        uses: actions-rs/grcov@v0.1
+
+      - name: Codecov
+        uses: codecov/codecov-action@v3.1.0
+        with:
+          files: ${{ steps.coverage.outputs.report }}
+          verbose: true
+          fail_ci_if_error: true
+        env:
+          CODECOV_TOKEN: 5be757b6-e923-40f2-80ea-5deac1e02b1e
\ No newline at end of file
diff --git a/Brewfile b/Brewfile
index 0f0706a9f..b5957492a 100644
--- a/Brewfile
+++ b/Brewfile
@@ -3,4 +3,7 @@ brew 'cmake'
 brew 'go'
 brew 'llvm'
 brew 'protobuf'
-brew 'openssl'
\ No newline at end of file
+brew 'openssl'
+
+# Test dependencies
+brew 'lcov'
diff --git a/README.md b/README.md
index 8f7dff2b3..28085c62b 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+[![codecov](https://codecov.io/github/mobilecoinofficial/full-service/branch/main/graph/badge.svg?token=KqBsyfOOHW)](https://codecov.io/github/mobilecoinofficial/full-service)
 # Full Service
 
 A MobileCoin service for wallet implementations.
@@ -69,7 +70,7 @@ sudo xcode-select -s /Applications/Xcode_12.5.1.app/Contents/Developer
 
    On Ubuntu:
     ```sh
-    sudo apt install build-essential cmake protobuf-compiler libprotobuf-dev llvm llvm-dev clang libclang-dev libsqlite3-dev libssl-dev
+    sudo apt install build-essential cmake protobuf-compiler libprotobuf-dev llvm llvm-dev clang libclang-dev libsqlite3-dev libssl-dev lcov
     ```
 
    On MacOS:
@@ -95,6 +96,10 @@ sudo xcode-select -s /Applications/Xcode_12.5.1.app/Contents/Developer
    export PKG_CONFIG_PATH="/opt/homebrew/opt/openssl@3/lib/pkgconfig"
     ```
    
+   Finally for both:
+   ```sh
+   rustup component add llvm-tools-preview
+   ```
 
 4. Pull submodule.
 
@@ -428,6 +433,9 @@ Under the covers, this runs:
 SGX_MODE=HW \
 IAS_MODE=DEV \
 CONSENSUS_ENCLAVE_CSS=$(pwd)/consensus-enclave.css \
+CARGO_INCREMENTAL=0 \
+RUSTFLAGS='-Cinstrument-coverage' \
+LLVM_PROFILE_FILE="../target/profraw/json5format-%m.profraw" \
 cargo test
 ```
 
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 000000000..15615155c
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,13 @@
+coverage:
+  status:
+    project:
+      default: false
+      full-service:
+        target: auto
+        paths: "full-service/"
+      mirror:
+        target: auto
+        paths: "mirror/"
+      validator:
+        target: auto
+        paths: "validator/"
\ No newline at end of file
diff --git a/mirror/test/README.md b/mirror/test/README.md
index fca83206b..833461cd2 100644
--- a/mirror/test/README.md
+++ b/mirror/test/README.md
@@ -2,7 +2,7 @@
 
 This directory contains a shell script + associated files for testing a full service mirror release.
 
-This can be run with varying degress of automation. Either with docker, or by running run.sh with a binary you downloaded yourself
+This can be run with varying degrees of automation. Either with docker, or by running run.sh with a binary you downloaded yourself
 
 ## Test with Docker
 
diff --git a/tools/test-with-coverage.sh b/tools/test-with-coverage.sh
new file mode 100755
index 000000000..a7e89940f
--- /dev/null
+++ b/tools/test-with-coverage.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# Copyright (c) 2018-2020 MobileCoin Inc.
+
+# RUSTFLAGS="-C instrument-coverage" \
+
+set -e
+
+if [[ ! -z "$1" ]]; then
+    cd "$1"
+fi
+
+echo "Testing in $PWD"
+CARGO_INCREMENTAL=0 RUSTFLAGS='-Cinstrument-coverage' LLVM_PROFILE_FILE="../target/profraw/json5format-%m.profraw" \
+SGX_MODE=SW IAS_MODE=DEV CONSENSUS_ENCLAVE_CSS=$(pwd)/consensus-enclave.css \
+cargo test
+echo "Testing in $PWD complete."
+
+echo "Building coverage report (lcov) html to target/coverage/results"
+mkdir -p ./target/coverage
+grcov . --binary-path ./target/debug/deps/ --source-dir . -t lcov --branch --ignore-not-existing \
+--ignore "../*" --ignore "/*" --ignore "mobilecoin/*" --ignore "target/*" --ignore "*/e2e_tests/*" \
+-o ./target/coverage/tests.lcov
+genhtml ./target/coverage/tests.lcov --show-details --prefix "$PWD" --output-directory ./target/coverage/results
+
+if [[ "$OSTYPE" == "darwin"* ]]; then
+  open ./target/coverage/results/index.html
+#elif [[ "$OSTYPE" == "linux-gnu"* ]]; then
+  # ...
+else
+  echo "test output written to target/coverage/results/index.html"
+fi
\ No newline at end of file
diff --git a/tools/test.sh b/tools/test.sh
index 3b145e95c..1dd603c8f 100755
--- a/tools/test.sh
+++ b/tools/test.sh
@@ -11,7 +11,6 @@ if [[ ! -z "$1" ]]; then
 fi
 
 echo "Testing in $PWD"
-LLVM_PROFILE_FILE="json5format-%m.profraw" \
 SGX_MODE=SW IAS_MODE=DEV CONSENSUS_ENCLAVE_CSS=$(pwd)/consensus-enclave.css \
-cargo test -p mc-full-service
-echo "Testing in $PWD complete."
+cargo test
+echo "Testing in $PWD complete."
\ No newline at end of file