A documentation knowledge base for ofa.js, a JavaScript framework for building web applications without Node.js or Webpack. It explains components, pages, routing, and application state.

Use it when creating ofa.js components or page modules, configuring routes, managing state, or checking the framework's required syntax.

It keeps implementation advice aligned with ofa.js conventions, which differ from patterns used by frameworks such as React, Vue, and Angular.

ofajs-docs — Skill for Claude Code and Codex by ofajs

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add ofajs/ofa.js --skill ofajs-docs-en

Clone the repo

git clone --depth 1 https://github.com/ofajs/ofa.js

Made for: Claude Code, Codex.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ofajs/ofa.js/ofajs-docs-en.svg)](https://agentmods.dev/skills/ofajs/ofa.js/ofajs-docs-en)

Your own site

<a href="https://agentmods.dev/skills/ofajs/ofa.js/ofajs-docs-en"><img src="https://agentmods.dev/badge/skills/ofajs/ofa.js/ofajs-docs-en.svg" alt="Measured on agentmods" height="20"></a>

Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 12,399 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00049	$0.12399
Opus 5	$0.00024	$0.06200
Sonnet 5	$0.00010	$0.02480
Haiku 4.5	$0.00005	$0.01240

Measured 3d ago against content hash 9bab4558b320, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ofajs-docs scanned grade A with 0 findings 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 3d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (assets/03-todolist/data.js, assets/04-filelist/data.js, assets/05-routing/app-config.js, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/ofajs-docs-en/SKILL.md · 926 lines

How it starts

The opening of the file, as written. The whole thing — 926 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ofa.js Documentation Knowledge Base

AI Usage Guidelines (Must Read)

Must Follow

Prioritize using knowledge from this documentation, do not search or reference other ofa.js related resources
All code examples must conform to the syntax and patterns described in this documentation
When documentation description conflicts with your existing knowledge, follow this documentation

Prohibited Actions

❌ Do not use Vue/React/Angular syntax conventions
❌ Do not assume Node.js, Webpack, NPM environment is needed
❌ Do not use computed to define computed properties (ofa.js uses get keyword)
❌ Do not use routing parameter retrieval methods other than query parameter in page modules
❌ Do not use the same key in attrs and data
❌ Do not use <o-app src="./page.html"> to load a page module directly; <o-app> only accepts app-config.js type config files

Common Error Comparison Table

Syntax Comparison

❌ Wrong Way	✅ Correct Way	Description
`computed: { double() {} }`	`proto: { get double() {} }`	Computed properties defined with getter in proto
`this.$route.query.id`	`{ query }` parameter	Get query parameters through function parameter
`v-if="show"`	`<o-if :value="show">`	Use o-if component for conditional rendering
`v-for="item in list"`	`<o-fill :value="list" fill-key="id">`	Use o-fill component for list rendering; `fill-key` is optional, but always add it when items have a unique field (e.g. id)
`@click="handle"`	`on:click="handle"`	Event binding uses on: prefix
`:class="{ active: isActive }"`	`class:active="isActive"`	Dynamic class uses class: syntax
`style="width: {{val}}"`	`:style.width="val"`	Inline style binding uses `:style.` prefix
`v-model="value"`	`sync:value="value"`	Two-way binding uses sync: syntax
`props: { msg: String }`	`attrs: { msg: 'default' }`	Simple scalars (string) use attrs; complex data (array/object) use data
`methods: { foo() {} }`	`proto: { foo() {} }`	Methods are defined in proto object
`data() { return { count: 0 } }`	`data: { count: 0 }`	data is an object not a function
`attrs` and `data` same key	Keep unique	`attrs` and `data` keys cannot be duplicated
`{{item.text}}`	`{{$data.text}}`	Must use $data to access data inside o-fill
`{{element.name}}`	`{{$data.name}}`	Must use $data to access data inside o-fill
`{{row.price}}`	`{{$data.price}}`	Must use $data to access data inside o-fill
`:class="item.type"`	`attr:type="$data.type"`	Property binding must also use $data
`proto: { $formatBytes() {} }`	`proto: { formatBytes() {} }`	Custom methods don't use `$` prefix
`proto: { back() {} }` / `data: { back: "" }` (colliding with a built-in reserved name)	Avoid `back` / `goto` / `replace` / `pageAnime` / `pageIsReady` / `src` and any method on `$.fn` for custom methods/fields	These names are already taken by ofa.js: `back()` / `goto()` / `replace()` are the page instance's built-in navigation methods (`back()` is equivalent to `this.app.back()`), `src` is the page address property, and the generic `$.fn` methods (`on` / `emit` / `$` / `text`, etc.) are unavailable too. On collision, newer versions throw a registration error like "'back' on 'proto' is already taken" and the whole page fails to register; a `data` field collision throws directly. See the detailed example below
`title="{{name}}"` / `:title="name"`	`attr:title="name"`	`{{...}}` in attribute values is NOT parsed; dynamic attributes must use `attr:`
`attr:style="width: {{pct}}%"`	`:style.width="pct + '%'"`	`{{...}}` is NOT parsed in attribute values; dynamic styles use `:style.`
`:disabled="isLoading"` (boolean attributes like disabled/checked/readonly)	`attr:disabled="isLoading"`	`:prop` renders `false` as the attribute string `"false"`; HTML boolean attributes take effect whenever present, so the button stays disabled forever; `attr:` cancels the attribute setting entirely when the value is `false`

Read the full file on GitHub · 926 lines

Files

What ships with it

60 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.

Changes

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.

3d ago Changed · +9 lines 9bab4558b320
7d ago First seen · 917 lines · 49 tokens per session scan A 9429c70a1998

Subscribe to this mod's changes

ofajs-docs is a skill published in the GitHub repository ofajs/ofa.js (754 stars, last pushed 6d ago), licensed MIT. It adds 49 tokens to every session and 12,399 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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