diff --git a/Makefile b/Makefile
index b6d1a92..c8fd60a 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,11 @@ eq = $(if $(or $(1),$(2)),$(and $(findstring $(1),$(2)),\
 #
 
 .PHONY : \
+	init-repo \
+	migrate-run \
+	migrate-create \
+	prepare \
+	prepare-check \
 	doc \
 	fmt \
 	clippy \
@@ -28,7 +33,8 @@ eq = $(if $(or $(1),$(2)),$(and $(findstring $(1),$(2)),\
 	start \
 	stop \
 	rm \
-	release
+	release \
+	coverage
 
 init-repo:
 	cargo install --version="~0.8" sqlx-cli --no-default-features --features rustls,postgres
@@ -52,7 +58,7 @@ doc :
 ifeq ($(clean),yes)
 	@rm -rf target/doc/
 endif
-	cargo doc --all-features --no-deps\
+	SQLX_OFFLINE=true cargo doc --all-features --no-deps\
 		$(if $(call eq,$(private),no),,--document-private-items) \
 		$(if $(call eq,$(open),no),,--open)
 
@@ -98,4 +104,8 @@ prepare-check:
 # Usage :
 #	make precommit
 
+coverage:
+	cargo llvm-cov clean --workspace --html --output-dir=coverage
+	cargo llvm-cov --all-features --workspace --no-clean --html --output-dir=coverage --open
+	
 precommit : fmt clippy test prepare-check
diff --git a/cpast_api/README.md b/cpast_api/README.md
index 701aeed..ad0c941 100644
--- a/cpast_api/README.md
+++ b/cpast_api/README.md
@@ -91,3 +91,53 @@ Launch `cargo`:
 ```bash
 cargo test 
 ```
+
+## Architecture
+
+### Workflow
+
+```mermaid
+graph TD
+    A[User Interface] -->|Submits Code| B[API Layer]
+    B -->|Enqueues Task| D[Task Queue: RabbitMQ/Kafka]
+    D -->|Distributes Tasks| E[Worker Nodes]
+    E -->|Requests Compilation and Execution| C1[Code Runner]
+    
+    subgraph Docker Container
+        C1[Code Runner] 
+        C2[Family of Compilers]
+    end
+
+    C1 -->|Returns Output| E
+    C1 -->|Uses| C2
+    E -->|Sends Result via WebSocket| B
+    B -->|WebSocket Connection| A
+
+    subgraph Cache Layer
+        H[Redis] -->|Cached Response| B
+    end
+
+    C1 -->|Task Results| H
+```
+
+### High level architecture
+
+
+```mermaid
+architecture-beta
+    group api(cloud)[API]
+    group docker(cloud)[Docker container] in api
+
+    service redis(database)[Redis Cache] in api
+    service kafka(server)[Kafka or RabbitMQ] in api
+    service server(internet)[Server] in api
+    service code_runner(server)[Code Runner] in docker
+    service family_of_compilers(disk)[Family of Compilers] in docker
+
+    server:R -- L:redis
+    server:T -- B:kafka
+    kafka:R -- L:code_runner
+    code_runner:R -- L:family_of_compilers
+    code_runner:T -- B:redis
+```
+
diff --git a/cpast_api/src/routes/api/v1/evaluate/mod.rs b/cpast_api/src/routes/api/v1/evaluate/mod.rs
index 0d6566b..6cb1296 100644
--- a/cpast_api/src/routes/api/v1/evaluate/mod.rs
+++ b/cpast_api/src/routes/api/v1/evaluate/mod.rs
@@ -21,6 +21,9 @@ pub(crate) struct EvaluateCodeApiv1;
 
 #[derive(Serialize, ToSchema)]
 struct EvaluateCodeInputDiff {
+    #[schema(example = "world")]
+    input: String,
+
     #[schema(example = "Hello, world!")]
     expected_output: String,
 
@@ -34,6 +37,7 @@ struct EvaluateCodeResponse {
     has_output_matched: bool,
 
     #[schema(example = json!(Vec::from([EvaluateCodeInputDiff {
+        input: "world".to_string(),
         expected_output: "Hello, world!".to_string(),
         actual_output: "Hello, worldd!".to_string(),
     }])))]