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PortalJS — New Portal · datopian | DecimalAI

codingby datopian

PortalJS — New Portal

datopian/portaljs-new-portal

Source datopian/portaljs ↗License MIT

Scaffold a new PortalJS data portal from a brief. Copies the canonical template from examples/portaljs-catalog and substitutes project tokens.

SkillScore72Maintained

Automatic

Frontend / UI pack

Last verified 8/13/2026

What it changes

Passed 17 of 24 test cases with the skill, and 6 of 24 without it.

Without skill24%

With skill72%

Checks it passed that the model alone missed

Requires Node.js version 22 or higher.
Clears datasets.json to an empty array.
Sets NAMESPACE_TYPE to owner in lib/datasets.ts.

and 10 more in the full report

12 fixed6 passed either way7 still failing0 broke

Pass-rate lift: +48 pp
Tokens: +2%
Agent turns: 0%
Response time: -61%

Model gemini-3.6-flashMeasured 8/13/2026v118 of 25 cases passed with skill · 24 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/datopian-portaljs-new-portal/SKILL.md https://app.decimal.ai/s/datopian-portaljs-new-portal/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add datopian-portaljs-new-portal, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/datopian-portaljs-new-portal/ and pins it in .decimal/skills.lock

decimalai skills add datopian-portaljs-new-portal

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/datopian-portaljs-new-portal/SKILL.md https://app.decimal.ai/s/datopian-portaljs-new-portal/SKILL.md

Raw file: /s/datopian-portaljs-new-portal/SKILL.md ↗ · machine-readable summary at /s/datopian-portaljs-new-portal.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 12

Prompt

A developer is attempting to run dependency installation inside a newly scaffolded portal workspace on Node.js v18.20.0, but installation fails. What is the minimum required Node.js version?

What was checked, without and with the skill
Checked	Without skill	With skill
Requires Node.js version 22 or higher.	Missed	Passed

case-13 · gemini-3.6-flash · 8/13/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md102 lines2 files

PortalJS — New Portal

Overview

Scaffold a production-ready PortalJS data portal from a brief. The skill is interactive: if the brief is thin it interviews the user in three short rounds (mapped to the template's three surfaces — Home, Catalog, Showcase), echoes a brief back for confirmation, then copies examples/portaljs-catalog (locally or via a remote tiged fetch), substitutes placeholder tokens, sets the namespace mode, seeds any datasets named in the interview, installs dependencies, and verifies the scaffold with a type check.

Prerequisites

Node.js >=22 and npm available on PATH.
Network access, unless a current local checkout of the portaljs repo is available (the resolver defaults to a remote fetch of the template).
A destination directory name that does not already contain files (or user consent to overwrite one that does).

Instructions

The canonical, full step-by-step workflow is .claude/commands/portaljs-new-portal.md — the single source of truth. Read and follow it when executing. Summary:

Interview the user in up to three rounds — Home/basics, Catalog & discovery (datasets, namespace mode theme vs owner), Showcase/views — skipping any round already answered by the input brief. Accept "use defaults" at any point.
Confirm a short brief (name, slug, description, namespace, datasets, views) before building.
Resolve the template source: prefer a remote tiged fetch of examples/portaljs-catalog at main (or PORTALJS_TEMPLATE_REF); use a local checkout only when it is current (has pages/[owner]/[slug].tsx) and the destination is outside that repo.
Materialize the template into ./PROJECT_SLUG, asking first if the destination already exists and is non-empty.
Substitute __PROJECT_NAME__, __PROJECT_SLUG__, __DESCRIPTION__ tokens across all files with perl -pi, escaping /, \, and & in the values.
Set NAMESPACE_TYPE ('theme' or 'owner') in lib/datasets.ts per the

Track record

Benchmark

17 / 24

test cases passed, vs 6 / 24 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

datopian / portaljs

skills/portaljs-new-portal/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 1 file

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

PortalJS — New Portal

Overview

Prerequisites

Instructions

Track record

Benchmark

Adoption

SkillSafety

Source

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