pulumi-best-practices SKILL.md skillA
pulumi-best-practices from pulumi/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pulumi/agent-skills/pulumi-best-practices@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pulumi/agent-skills
- Path
pulumi/skills/pulumi-best-practices/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Jun 2, 2026
- Size
- 15,734 bytes
- Repository stars
- 78
- License
- Apache-2.0
Load when the user is writing, reviewing, or debugging Pulumi TypeScript/Python programs; asks about Output<T> or apply() usage; wants to create ComponentResource classes; needs to refactor resources without destroying them (aliases); is setting up secrets or config; or is configuring a pulumi preview/up CI workflow. Also load for questions about resource dependency order, parent/child resource relationships, or pulumi.interpolate.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Pulumi Best Practices
## When to Use This Skill
Invoke this skill when:
- Writing new Pulumi programs or components
- Reviewing Pulumi code for correctness
- Refactoring existing Pulumi infrastructure
- Debugging resource dependency issues
- Setting up configuration and secrets
## Practices
### 1. Never Create Resources Inside `apply()`
**Why**: Resources created inside `apply()` don't appear in `pulumi preview`, making changes unpredictable. Pulumi cannot properly track dependencies, leading to race conditions and deployment failures.
**Detection signals**:
- `new aws.` or other resource constructors inside `.apply()` callbacks
- Resource creation inside `pulumi.all([...]).apply()`
- Dynamic resource counts determined at runtime inside apply
**Wrong**:
```typescript
const bucket = new aws.s3.Bucket("bucket");
bucket.id.apply(bucketId => {
// WRONG: This resource won't appear in preview
new aws.s3.BucketObject("object", {
bucket: bucketId,
content: "hello",
});
});
```
**Right**:
```typescript
const bucket = new aws.s3.Bucket("bucket");
// Pass the output directly - Pulumi handles the dependency
…Read the whole file at its exact version.
How to install
mdr add pulumi/agent-skills/pulumi-best-practices@sha256:701bf94433f77f78The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_7cdzgwy7pikkfnyy)
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Versions
The registry has recorded 1 version of this file, committed on Jun 2, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15734 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
pulumi/agent-skills · 78 stars · license Apache-2.0 · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7cdzgwy7pikkfnyy GET https://markdownregistry.com/api/v1/resolve?ref=pulumi/agent-skills/pulumi-best-practices GET https://markdownregistry.com/api/v1/blob/701bf94433f77f7851ed979ea74700a50dc69f958a20327f13da53d6a1468765
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.