diff --git a/.codecov.yml b/.codecov.yml
new file mode 100644
index 0000000..a69cfa2
--- /dev/null
+++ b/.codecov.yml
@@ -0,0 +1,22 @@
+codecov:
+  notify:
+    require_ci_to_pass: yes
+  strict_yaml_branch: main  # only use the latest copy on the main branch
+
+ignore:
+  - "model/v1/model.pb.go"
+  - "proto-gen/*/*"
+
+coverage:
+  precision: 2
+  round: down
+  range: "85...100"
+  status:
+    project:
+      default:
+        enabled: yes
+        target: 85%
+    patch:
+      default:
+        enabled: yes
+        target: 90%
diff --git a/.gitignore b/.gitignore
index 6eae0f3..396dc68 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .idea/
 gen-*/
 .proto-gen-polyglot/
+coverage.txt
diff --git a/Makefile b/Makefile
index dffdf5c..82f2a48 100644
--- a/Makefile
+++ b/Makefile
@@ -40,6 +40,7 @@ swagger-validate:
 clean:
 	rm -rf *gen-* || true
 	rm -rf .*gen-* || true
+	rm -rf coverage.txt
 
 .PHONY: thrift
 thrift:	thrift-image clean $(THRIFT_FILES)
diff --git a/README.md b/README.md
index 449cfb6..396ea84 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # jaeger-idl [![Build Status][ci-img]][ci]
+[![Coverage Status][cov-img]][cov]
 
 A set of shared Thrift and Protobuf data model definitions used by the Jaeger components.
 
@@ -35,3 +36,5 @@ See [CONTRIBUTING](./CONTRIBUTING.md).
 
 [ci-img]: https://github.com/jaegertracing/jaeger-idl/actions/workflows/ci-unit-tests.yml/badge.svg
 [ci]: https://github.com/jaegertracing/jaeger-idl/actions/workflows/ci-unit-tests.yml
+[cov-img]: https://codecov.io/gh/jaegertracing/jaeger-idl/branch/main/graph/badge.svg
+[cov]: https://codecov.io/gh/jaegertracing/jaeger-idl/branch/main/