aws-essentials SKILL.md skillA
aws-essentials from ericrisco/rsc-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ericrisco/rsc-harness/aws-essentials@git:20260729.3ecb845Pins git:20260729.3ecb845 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ericrisco/rsc-harness
- Path
skills/aws-essentials/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260729.3ecb845, committed Jul 29, 2026
- First version recorded
- Jun 2, 2026
- Size
- 11,806 bytes
- Repository stars
- 236
- License
- MIT
Use when standing up the core AWS surface a small product needs: hardening a fresh account, a private S3 bucket, encrypted RDS Postgres, ECS Fargate vs EC2, CloudFront + OAC, or scoping an IAM policy to least privilege. NOT the CI pipeline that ships the container (that is `deployment`), NOT app-code access-control review (that is `secure-coding`).
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
# AWS essentials — the core surface a small product needs, secured from the first command Stand up the foundational AWS services a one-app product actually uses — IAM, S3, ECS Fargate, RDS, CloudFront — with the security defaults that prevent the incidents (public buckets, god-mode app roles, long-lived keys, unencrypted databases). Pick the right tier for *small* (one app, modest traffic, two engineers), provision it correctly, and wire it without foot-guns. ```text account hardening → IAM (roles + scoped policies) → S3 (private) / RDS (encrypted) / ECS Fargate → CloudFront (OAC) → infra exists, wired, least-privilege ``` ## Service decision table | Need | Use | Use instead if | |------|-----|----------------| | Object/file storage (uploads, assets, backups) | **S3** (private bucket) | — | | Relational data (users, orders, anything with joins) | **RDS** (Postgres/MySQL) | key-value / serverless access pattern → `dynamodb` skill | | Long-running container/API | **ECS Fargate** | steady ~70%+ CPU 24/7 → EC2 launch type with Savings Plans/Spot; GPU or >120 GB RAM → EC2 | …
Read the whole file at its exact version.
How to install
mdr add ericrisco/rsc-harness/aws-essentials@sha256:c468c4dfe14a5aecThe line at the top of this page pins the label git:20260729.3ecb845, 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_glyv6dsh46anh37q)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jun 2, 2026 and Jul 29, 2026, about one every 57 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260729.3ecb845 latest | 2026-07-29 | 3ecb845 | 11,806 B | A | view · diff |
| git:20260602.1e843fe | 2026-06-02 | 1e843fe | 13,184 B | A | view |
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 (11806 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
ericrisco/rsc-harness · 236 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_glyv6dsh46anh37q GET https://markdownregistry.com/api/v1/resolve?ref=ericrisco/rsc-harness/aws-essentials GET https://markdownregistry.com/api/v1/blob/c468c4dfe14a5aec46f9825ca204d3eaf0e5413b90c11d79d9ea40177433b95b
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.