AWS SST v4 Infrastructure Development

An SST v4 (Ion) expert skill for authoring, testing, deploying and troubleshooting sst.config.ts and infra/ modules on AWS.

Dev & CodingAdvanced★ 360⑂ 40AI score 8/10Last updated: Jun 15, 2026

What it does

Authoring: guides declaration of sst.aws.Function/Bucket/Dynamo/Cron/Service/Router, sst.Secret, sst.Linkable, and raw Pulumi aws.* resources in the repo's existing style.
Linking & IAM: link: for in-graph, same-app sharing; SSM Parameter Store under /{app}/{stage}/{domain} for out-of-graph consumers; IAM scoped precisely with $interpolate.
Pitfall guards: never interpolate a Pulumi Output<T> into a plain template literal (broken ARNs that only fail at deploy), and pin the Node runtime once via a global $transform.
Testing: add/maintain source-level Vitest assertions in infra/tests/, plus npx sst diff and tsc --noEmit before deploying.
Deploy & troubleshoot: confirm the target account with aws sts get-caller-identity, diagnose ConflictException, '__filename' has already been declared, and MalformedPolicyDocument; plan resource-type migrations as two sequential PRs.

Who it's for

Developers managing AWS infrastructure as code with SST v4 (Ion)
Teams with several infra/ modules who want consistent conventions and a regression net
Anyone repeatedly decoding failed SST deploy logs

Note: not for SST v2/v3 (CDK-based Classic), AWS CDK, Terraform, or SAM projects.

Examples

"Add an S3 upload bucket and a processing Lambda to this repo" → declares them in the right infra/ module, wires link:, scopes IAM with $interpolate, and adds a source test.
"sst deploy failed with ConflictException" → identifies the resource-type or physical-name change and proposes a two-deploy teardown/recreate plan.
"My IAM policy is rejected as MalformedPolicyDocument" → finds the Output<T> inside a template literal and rewrites it with $interpolate.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/zxkane/aws-skills/HEAD/plugins/aws-iac/skills/aws-sst-development/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)

Download the ZIP with the button below.
In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.

↓ Download ZIP

Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the plugins/aws-iac/skills/aws-sst-development folder from the GitHub repo zxkane/aws-skills into my ~/.claude/skills/aws-sst-development/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/zxkane/aws-skills.git /tmp/aws-skills && mkdir -p ~/.claude/skills && cp -r /tmp/aws-skills/plugins/aws-iac/skills/aws-sst-development ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

Open a terminal and clone the repo: git clone https://github.com/zxkane/aws-skills.git
Create the skills folder: mkdir -p ~/.claude/skills
Copy the skill: cp -r aws-skills/plugins/aws-iac/skills/aws-sst-development ~/.claude/skills/
Verify that references/authoring.md, references/testing.md, and references/deploy-and-troubleshoot.md came along.
Prerequisites: Node.js with npm/pnpm, working AWS CLI credentials (aws sts get-caller-identity), and an SST v4 project (npx sst version).
(Recommended) Connect the AWS docs MCP and Context7 MCP so SST/Pulumi syntax and AWS facts can be verified instead of guessed.
Restart Claude Code and ask something like "add a Lambda to sst.config.ts" — the skill triggers automatically.

View source on GitHub ↗License: MIT