Borrowing it
Nothing to install: this file belongs to ctxpipe-ai/ctxpipe. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ctxpipe-ai/ctxpipe/main/.agents/skills/aws-cdk/SKILL.mdgit clone --depth 1 https://github.com/ctxpipe-ai/ctxpipeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ctxpipe-ai/ctxpipe/aws-cdk)<a href="https://agentmods.dev/skills/ctxpipe-ai/ctxpipe/aws-cdk"><img src="https://agentmods.dev/badge/skills/ctxpipe-ai/ctxpipe/aws-cdk/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ctxpipe-ai/ctxpipe/aws-cdk"><img src="https://agentmods.dev/badge/skills/ctxpipe-ai/ctxpipe/aws-cdk.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00084 | $0.01604 |
| Opus 5.5 | $0.00034 | $0.00642 |
| Sonnet 5.5 | $0.00017 | $0.00321 |
| Haiku 4.5 | $0.00008 | $0.00160 |
Grade C, and why
aws-cdk scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
| **ConcurrentReadLock / ConcurrentWriteLock** | `rm -rf cdk.out` then re-run. Parallel CI: `--output ./cdk.out.$BUILD_ID`. [Details](references/troubleshooting-synth.md) | This is a copy
100% identical to aws-cdk — 24 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AWS CDK
Overview
Domain expertise for CDK construct authoring, deployment workflows, compliance, drift, importing resources, safe refactoring, and troubleshooting CDK CLI / CloudFormation errors.
When NOT to use: Raw CloudFormation YAML/JSON. SAM. Terraform/Pulumi. CI/CD beyond CDK Pipelines. Use builtin knowledge or specialized skills for these.
Critical Warnings
Deadly embrace: Removing a cross-stack reference deadlocks deployment (Export ... cannot be deleted as it is in use by ...). Preferred fix: weaken the reference first — CrossStackReferences.of($RESOURCE).produce(ReferenceStrength.BOTH) then WEAK, then remove (three deploys). Legacy fallback: two-deploy this.exportValue() recipe. See troubleshooting-deployment.
Construct ID changes cause replacement: Renaming/moving a construct changes its logical ID → CloudFormation replaces the resource (data loss for stateful resources). Always cdk diff before deploy. See refactor-and-prevent-replacement.
UPDATE_ROLLBACK_FAILED: Stack is stuck. Fix with cdk rollback $STACK or cdk rollback $STACK --orphan <LogicalId>. See troubleshooting-deployment.
Non-empty S3 buckets persist after destroy: You MUST set both removalPolicy: DESTROY and autoDeleteObjects: true. Versioned buckets are worse — delete markers persist even after apparent deletion.
Common Workflows
| Task | Quick Command | Details |
|---|---|---|
| Bootstrap | cdk bootstrap aws://$ACCOUNT/$REGION |
bootstrap-and-project-setup |
| New TS project | cdk init app --language typescript — use tsx, eslint-plugin-awscdk |
bootstrap-and-project-setup |
| New Python project | cdk init app --language python — pin deps, use virtualenv |
bootstrap-and-project-setup |
| Deploy | cdk synth --strict → cdk diff → cdk deploy |
Always diff before deploy to prod |
| cdk-nag | Aspects.of(app).add(new AwsSolutionsChecks()) |
compliance-and-drift |
| Drift | cdk drift $STACK (use --fail in CI) |
compliance-and-drift |
| Import resource | cdk import (interactive or --resource-mapping for CI), cdk deploy --import-existing-resources |
import-and-migrate |
| Refactor safely | cdk refactor --unstable=refactor — no property changes in same deploy |
refactor-and-prevent-replacement |
What ships with it
9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/bootstrap-and-project-setup.md 8.0 KB
- references/compliance-and-drift.md 5.2 KB
- references/construct-patterns.md 10 KB
- references/import-and-migrate.md 6.3 KB
- references/refactor-and-prevent-replacement.md 6.2 KB
- references/troubleshooting-credentials.md 5.8 KB
- references/troubleshooting-deployment.md 11 KB
- references/troubleshooting-synth.md 8.8 KB
- references/v1-to-v2-migration.md 3.2 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 74 lines · 84 tokens per session scan C 5b425a0a5fb4
aws-cdk is a skill published in the GitHub repository ctxpipe-ai/ctxpipe (27 stars, last pushed today), licensed MIT. It adds 84 tokens to every session and 1,604 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). It is 100% identical to aws-cdk, differing in 24 lines, and is treated as a copy.
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