build-package SKILL.md skillA
build-package from tylerjrbuell/reactive-agents-ts is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tylerjrbuell/reactive-agents-ts/build-package@git:20260625.b90e0ebPins git:20260625.b90e0eb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tylerjrbuell/reactive-agents-ts
- Path
.agents/skills/build-package/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260625.b90e0eb, committed Jun 25, 2026
- First version recorded
- Mar 15, 2026
- Size
- 3,755 bytes
- Repository stars
- 31
- License
- MIT
Add a new package to the Reactive Agents monorepo. Covers scaffolding, package.json, tsconfig, layer wiring, and index exports. Use when creating a net-new @reactive-agents/* package.
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
# Add New Package: $ARGUMENTS
All 35 packages exist. Use this skill only when creating a genuinely new package.
## Step 1: Determine the layer
Identify which dependency layer your package belongs to (from `architecture-reference`):
| Your package depends on | Layer |
|------------------------|-------|
| Nothing (or only external npm) | Layer 0 |
| `core` only | Layer 1 |
| `core` + `llm-provider` | Layer 2 |
| Multiple Layer 1–2 packages | Layer 3 |
| All packages (facade) | Layer 4 |
Packages can only depend on packages in lower layers.
## Step 2: Scaffold directory structure
```bash
mkdir -p packages/$ARGUMENTS/src/services
mkdir -p packages/$ARGUMENTS/tests
```
## Step 3: Create package.json
```json
{
"name": "@reactive-agents/$ARGUMENTS",
"version": "0.0.1",
"type": "module",
"main": "src/index.ts",
"types": "src/index.ts",
"scripts": {
"build": "tsup",
"typecheck": "tsc --noEmit",
"test": "bun test --timeout 15000"
},
"dependencies": {
"effect": "^3.10.0",
"@reactive-agents/core": "workspace:*"
},
"devDependencies": {
"typescript": "^5.7.0",
"bun-types": "latest",
"tsup": "^8.0.0"
}
}
```
…Read the whole file at its exact version.
How to install
mdr add tylerjrbuell/reactive-agents-ts/build-package@sha256:117c75aae869ea6cThe line at the top of this page pins the label git:20260625.b90e0eb, 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_6l57gjjqqzel5vat)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Mar 15, 2026 and Jun 25, 2026, about one every 34 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260625.b90e0eb latest | 2026-06-25 | b90e0eb | 3,755 B | A | view · diff |
| git:20260410.db53cb3 | 2026-04-10 | db53cb3 | 3,760 B | A | view · diff |
| git:20260408.6cd4538 | 2026-04-08 | 6cd4538 | 6,045 B | A | view · diff |
| git:20260315.a07056d | 2026-03-15 | a07056d | 5,947 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 (3755 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
tylerjrbuell/reactive-agents-ts · 31 stars · license MIT · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6l57gjjqqzel5vat GET https://markdownregistry.com/api/v1/resolve?ref=tylerjrbuell/reactive-agents-ts/build-package GET https://markdownregistry.com/api/v1/blob/117c75aae869ea6c5c0ef6c2bde6959851c866e50d755dfba52da692f521df97
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.