feat(deploy-on-aws): add architecture diagram generation skill

.claude-plugin/marketplace.json

@@ -11,7 +11,7 @@
   "plugins": [
     {
       "category": "deployment",
-      "description": "Deploy applications to AWS with architecture recommendations, cost estimates, and IaC deployment.",
+      "description": "Deploy applications to AWS with architecture recommendations, cost estimates, IaC deployment, and architecture diagram generation.",
       "keywords": [
         "aws",
         "aws agent skills",
@@ -20,12 +20,14 @@
         "cdk",
         "cloudformation",
         "infrastructure",
-        "pricing"
+        "pricing",
+        "diagram",
+        "architecture"
       ],
       "name": "deploy-on-aws",
       "source": "./plugins/deploy-on-aws",
-      "tags": ["aws", "deploy", "infrastructure", "cdk"],
-      "version": "1.1.0"
+      "tags": ["aws", "deploy", "infrastructure", "cdk", "diagram"],
+      "version": "1.2.0"
     },
     {
       "category": "location",

README.md

@@ -95,6 +95,7 @@ Equips agents with the skills to accelerate AWS deployment - recommending AWS ar
 | Agent Skill | Triggers                                                                                                              |
 | ----------- | --------------------------------------------------------------------------------------------------------------------- |
 | **deploy**  | "deploy to AWS", "host on AWS", "run this on AWS", "AWS architecture", "estimate AWS cost", "generate infrastructure" |
+| **diagram** | "architecture diagram", "draw architecture", "generate diagram", "infrastructure diagram", "AWS diagram"              |
 
 ### MCP Servers
 

plugins/deploy-on-aws/.claude-plugin/plugin.json

@@ -2,18 +2,20 @@
   "author": {
     "name": "Amazon Web Services"
   },
-  "description": "Deploy applications to AWS with architecture recommendations, cost estimates, and IaC deployment.",
+  "description": "Deploy applications to AWS with architecture recommendations, cost estimates, IaC deployment, and architecture diagram generation.",
   "homepage": "https://github.com/awslabs/agent-plugins",
   "keywords": [
     "aws",
     "deploy",
     "infrastructure",
     "cdk",
     "cloudformation",
-    "pricing"
+    "pricing",
+    "diagram",
+    "architecture"
   ],
   "license": "Apache-2.0",
   "name": "deploy-on-aws",
   "repository": "https://github.com/awslabs/agent-plugins",
-  "version": "1.1.0"
+  "version": "1.2.0"
 }

plugins/deploy-on-aws/skills/diagram/SKILL.md

@@ -0,0 +1,81 @@
+---
+name: diagram
+description: "Generate architecture diagrams as code using the Python diagrams DSL. Triggers on phrases like: architecture diagram, system design diagram, draw architecture, generate diagram, infrastructure diagram, AWS diagram, Kubernetes diagram, network diagram, visualize architecture."
+---
+
+# Architecture Diagram Generation
+
+Generate architecture diagrams using the Python [diagrams](https://diagrams.mingrammer.com/) package. Write a Python script, run it, and produce an image (PNG by default).
+
+Supports AWS (29 service categories), Kubernetes, on-premises, GCP, SaaS, and custom icons via the `diagrams` DSL.
+
+## When to Load Reference Files
+
+Load the appropriate reference file based on what the user is building:
+
+- **Any diagram** -> ALWAYS load [references/dsl-syntax.md](references/dsl-syntax.md) first for DSL syntax, constructor options, connections, clusters, and edge styles
+- **AWS architecture**, **cloud infrastructure**, or **AWS services** -> load [references/aws-services.md](references/aws-services.md) for AWS import paths, common icons, and 5 AWS examples
+- **Kubernetes**, **on-premises**, **SaaS**, **flowcharts**, **process flows**, **custom icons**, or **non-AWS diagrams** -> load [references/non-aws-providers.md](references/non-aws-providers.md) for K8s, on-prem, flowchart, and custom icon examples
+
+## Workflow
+
+1. Load [references/dsl-syntax.md](references/dsl-syntax.md)
+2. Load the relevant provider reference (AWS or non-AWS)
+3. Write a Python script using the `diagrams` DSL
+4. Run: `mkdir -p generated-diagrams && python3 diagram.py`
+5. Verify the output file was created in `generated-diagrams/`
+
+## Critical Rules
+
+- ALWAYS set `show=False` in `Diagram()` constructor
+- ALWAYS set `filename="generated-diagrams/<name>"` (no `.png` extension)
+- ALWAYS use explicit imports: `from diagrams.aws.compute import EC2`
+- ALWAYS run `mkdir -p generated-diagrams` before executing
+- Add `generated-diagrams/` to `.gitignore` to avoid committing output artifacts
+- Use `Cluster()` to group related resources (VPCs, subnets, namespaces)
+- Use `Edge(label="HTTPS", color="darkgreen", style="dashed")` for labeled or styled connections
+
+## Defaults
+
+Default output format: PNG
+Default layout direction: TB (top-to-bottom)
+
+Override syntax:
+
+- "left to right" -> Use `direction="LR"`
+- "SVG format" -> Use `outformat="svg"`
+
+When not specified, ALWAYS use `direction="TB"` and `outformat="png"`.
+
+## Prerequisites
+
+Requires two dependencies installed locally:
+
+1. **GraphViz** (system package providing `dot`):
+   - macOS: `brew install graphviz`
+   - Ubuntu/Debian: `sudo apt-get install graphviz`
+   - Amazon Linux/RHEL: `sudo yum install graphviz`
+2. **Python diagrams package**: `python3 -m pip install diagrams`
+
+**Verify:** `dot -V && python3 -c "import diagrams; print('OK')"`
+
+### Missing Dependencies
+
+If `dot` command not found:
+
+- Inform user: "GraphViz is not installed. Required for diagram rendering."
+- Show install command for detected OS
+- DO NOT attempt to generate diagrams without GraphViz
+
+If `import diagrams` fails:
+
+- Inform user: "Python diagrams package not installed."
+- Show: `python3 -m pip install diagrams`
+- DO NOT proceed without the package
+
+## References
+
+- [DSL syntax and patterns](references/dsl-syntax.md)
+- [AWS services and examples](references/aws-services.md)
+- [Non-AWS providers and examples](references/non-aws-providers.md)
+- [diagrams documentation](https://diagrams.mingrammer.com/)

plugins/deploy-on-aws/skills/diagram/references/aws-services.md

@@ -0,0 +1,112 @@
+# AWS Services and Examples
+
+## AWS Service Categories
+
+| Category      | Import Path                | Common Icons                                          |
+| ------------- | -------------------------- | ----------------------------------------------------- |
+| `analytics`   | `diagrams.aws.analytics`   | Athena, EMR, Glue, Kinesis, Redshift, Quicksight      |
+| `compute`     | `diagrams.aws.compute`     | EC2, Lambda, ECS, EKS, Fargate, Batch                 |
+| `database`    | `diagrams.aws.database`    | RDS, Aurora, DynamoDB, ElastiCache, Redshift, Neptune |
+| `integration` | `diagrams.aws.integration` | SQS, SNS, StepFunctions, EventBridge, MQ              |
+| `management`  | `diagrams.aws.management`  | CloudWatch, CloudFormation, SystemsManager            |
+| `ml`          | `diagrams.aws.ml`          | Sagemaker, Rekognition, Comprehend, Bedrock           |
+| `network`     | `diagrams.aws.network`     | VPC, ELB, ALB, NLB, CloudFront, Route53, APIGateway   |
+| `security`    | `diagrams.aws.security`    | IAM, Cognito, WAF, KMS, Shield, SecretsManager        |
+| `storage`     | `diagrams.aws.storage`     | S3, EBS, EFS, FSx, Backup                             |
+| `general`     | `diagrams.aws.general`     | User, Users, Client, InternetGateway                  |
+
+Other categories: `ar`, `blockchain`, `business`, `cost`, `devtools`, `enablement`, `enduser`, `engagement`, `game`, `iot`, `media`, `migration`, `mobile`, `quantum`, `robotics`, `satellite`.
+
+## Example: Basic Web Service
+
+```python
+from diagrams import Diagram
+from diagrams.aws.compute import EC2
+from diagrams.aws.database import RDS
+from diagrams.aws.network import ELB
+
+with Diagram("Web Service", show=False, filename="generated-diagrams/aws-basic"):
+    ELB("lb") >> EC2("web") >> RDS("userdb")
+```
+
+## Example: Grouped Workers
+
+```python
+from diagrams import Diagram
+from diagrams.aws.compute import EC2
+from diagrams.aws.database import RDS
+from diagrams.aws.network import ELB
+
+with Diagram("Grouped Workers", show=False, direction="TB", filename="generated-diagrams/aws-workers"):
+    ELB("lb") >> [EC2("w1"), EC2("w2"), EC2("w3"), EC2("w4"), EC2("w5")] >> RDS("events")
+```
+
+## Example: Clustered Web Services
+
+```python
+from diagrams import Diagram, Cluster
+from diagrams.aws.compute import ECS
+from diagrams.aws.database import RDS, ElastiCache
+from diagrams.aws.network import ELB, Route53
+
+with Diagram("Clustered Web Services", show=False, filename="generated-diagrams/aws-clustered"):
+    dns = Route53("dns")
+    lb = ELB("lb")
+    with Cluster("Services"):
+        svc_group = [ECS("web1"), ECS("web2"), ECS("web3")]
+    with Cluster("DB Cluster"):
+        db_primary = RDS("userdb")
+        db_replica = RDS("userdb ro")
+        db_primary - db_replica
+    memcached = ElastiCache("memcached")
+    dns >> lb >> svc_group
+    svc_group >> db_primary
+    svc_group >> memcached
+```
+
+## Example: Event Processing
+
+```python
+from diagrams import Diagram, Cluster
+from diagrams.aws.compute import ECS, EKS, Lambda
+from diagrams.aws.analytics import Redshift
+from diagrams.aws.integration import SQS
+from diagrams.aws.storage import S3
+
+with Diagram("Event Processing", show=False, filename="generated-diagrams/aws-events"):
+    source = EKS("k8s source")
+    with Cluster("Event Flows"):
+        with Cluster("Event Workers"):
+            workers = [ECS("w1"), ECS("w2"), ECS("w3")]
+        queue = SQS("event queue")
+        with Cluster("Processing"):
+            handlers = [Lambda("p1"), Lambda("p2"), Lambda("p3")]
+    store = S3("events store")
+    dw = Redshift("analytics")
+    source >> workers >> queue >> handlers
+    handlers >> store
+    handlers >> dw
+```
+
+## Example: S3 Image Processing with Bedrock
+
+```python
+from diagrams import Diagram, Cluster, Edge
+from diagrams.aws.compute import Lambda
+from diagrams.aws.general import User
+from diagrams.aws.ml import Bedrock
+from diagrams.aws.storage import S3
+
+with Diagram("S3 Image Processing", show=False, direction="LR", filename="generated-diagrams/aws-bedrock"):
+    user = User("User")
+    with Cluster("S3 Bucket"):
+        input_folder = S3("Input")
+        output_folder = S3("Output")
+    fn = Lambda("Processor")
+    bedrock = Bedrock("Claude Sonnet")
+    user >> Edge(label="Upload") >> input_folder
+    input_folder >> Edge(label="Trigger") >> fn
+    fn >> Edge(label="Process") >> bedrock
+    bedrock >> Edge(label="Result") >> fn
+    fn >> Edge(label="Save") >> output_folder
+```

plugins/deploy-on-aws/skills/diagram/references/dsl-syntax.md

@@ -0,0 +1,110 @@
+# Diagrams DSL Syntax Reference
+
+## Basic Structure
+
+```python
+from diagrams import Diagram, Cluster, Edge
+from diagrams.aws.compute import EC2
+from diagrams.aws.database import RDS
+from diagrams.aws.network import ALB
+
+with Diagram("Title", show=False, filename="generated-diagrams/name"):
+    with Cluster("VPC"):
+        lb = ALB("ALB")
+        with Cluster("Private Subnet"):
+            servers = [EC2("web1"), EC2("web2")]
+        db = RDS("PostgreSQL")
+    lb >> servers >> db
+```
+
+## Diagram Constructor
+
+```python
+with Diagram(
+    "Diagram Title",               # Title shown on the diagram
+    show=False,                    # ALWAYS False -- don't open viewer
+    filename="generated-diagrams/name",  # Output path (no .png extension)
+    direction="TB",                # TB (top-bottom), LR (left-right), BT, RL
+    outformat="png",               # png (default), jpg, svg, pdf
+):
+    pass  # Add nodes and connections here
+```
+
+## Connections
+
+```python
+node1 >> node2 >> node3          # Left to right flow
+node1 << node2                   # Right to left flow
+node1 - node2                    # Bidirectional
+node1 >> [node2, node3, node4]   # Fan out to multiple
+node1 >> Edge(label="HTTPS", color="darkgreen", style="dashed") >> node2
+```
+
+## Clusters
+
+```python
+with Cluster("VPC"):
+    with Cluster("Public Subnet"):
+        lb = ALB("ALB")
+    with Cluster("Private Subnet"):
+        app = [EC2("app1"), EC2("app2")]
+    with Cluster("Data"):
+        db = RDS("db")
+    lb >> app >> db
+```
+
+## Edge Styles
+
+| Parameter | Values                                                                            |
+| --------- | --------------------------------------------------------------------------------- |
+| `color`   | `"darkgreen"`, `"firebrick"`, `"brown"`, `"darkorange"`, `"black"`, any CSS color |
+| `style`   | `"solid"`, `"dashed"`, `"dotted"`, `"bold"`                                       |
+| `label`   | Any string                                                                        |
+
+## Provider Import Paths
+
+| Provider    | Import Pattern                    | Example                                             |
+| ----------- | --------------------------------- | --------------------------------------------------- |
+| AWS         | `diagrams.aws.<category>`         | `from diagrams.aws.compute import EC2`              |
+| GCP         | `diagrams.gcp.<category>`         | `from diagrams.gcp.storage import GCS`              |
+| Kubernetes  | `diagrams.k8s.<category>`         | `from diagrams.k8s.compute import Pod`              |
+| On-premises | `diagrams.onprem.<category>`      | `from diagrams.onprem.database import PostgreSQL`   |
+| SaaS        | `diagrams.saas.<category>`        | `from diagrams.saas.chat import Slack`              |
+| Programming | `diagrams.programming.<category>` | `from diagrams.programming.flowchart import Action` |
+| Generic     | `diagrams.generic.<category>`     | `from diagrams.generic.compute import Rack`         |
+| Custom      | `diagrams.custom`                 | `Custom("name", "icon.png")`                        |
+
+## Common Patterns
+
+### Fan-out / Fan-in
+
+```python
+source >> [worker1, worker2, worker3] >> sink
+```
+
+### Bidirectional with Replica
+
+```python
+primary = RDS("primary")
+primary - RDS("replica")
+```
+
+### Nested Clusters
+
+```python
+with Cluster("VPC"):
+    with Cluster("Public"):
+        lb = ALB("ALB")
+    with Cluster("Private"):
+        app = [EC2("app1"), EC2("app2")]
+    lb >> app
+```
+
+### Custom Nodes
+
+```python
+from diagrams.custom import Custom
+
+# Place icon files in your project directory beforehand
+custom_node = Custom("My Service", "./icons/my-service.png")
+```