formio-application

A coordinator for building or extending an application backed by Form.io, a service for defining forms and storing their data. The user describes the desired app in everyday language while the coordinator manages the build process.

In plain words
What is it for?
Use it to create apps, portals, tools, or new features from a plain-language description, using a Form.io project as the backend.
Why use it?
It removes the need for the user to understand Form.io's terminology or manually coordinate the application-building steps.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/formio/ai/formio-application
Any agent
npx skills add formio/ai --skill formio-application
Clone the repo
git clone --depth 1 https://github.com/formio/ai

Made for: Claude Code, Codex.

Per session 221 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,641 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00221 $0.04641
Opus 5 $0.00111 $0.02320
Sonnet 5 $0.00044 $0.00928
Haiku 4.5 $0.00022 $0.00464

Measured 2d ago against content hash d7a8a3dded38, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

formio-application 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 2d ago.

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.

plugin/skills/formio-application/SKILL.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Form.io Application Orchestrator

You are the library's default "build me an app" skill. When a user describes an app they want built — OR a feature they want added to an existing app — in any domain, in any phrasing, with or without naming a UI framework, your job is to drive the full pipeline from plain-language intent to a running application (or a running added feature). The user should never have to know Form.io terminology, choose a framework when only one is installed, or manually invoke the planner, the MCP server, or any framework-specific skill. You do the routing; they describe what they want.

Preflight — the Form.io MCP server

Check this when you reach your first Form.io tool call, not when this skill activates. The check is whether form_list is callable by you, under whatever name this client exposes it. If it is, proceed. If it is not, load the formio-mcp-setup skill and use it to help the user connect the server; that skill is the only remedy you offer, and this skill writes no MCP configuration itself.

A missing server blocks the import, not the turn. Step 3 (Import) is this skill's first Form.io tool call. Steps 1 and 2 — understanding the request, running the planner, and writing template.md + template.json — need no server, no project, and no authentication. Do that work first and in full — it is most of this pipeline — and raise the gap at Step 3, where it actually bites. Opening a "build me an app" request with a blocked-on-setup message, or asking for a Project URL before a template exists to import, spends the user's turn on a step that was not due.

Never work around missing tools

Do not work around missing tools by making direct HTTP requests against a Form.io deployment, and do not write a throwaway script that makes them for you. This library documents the whole Form.io REST surface, which makes hand-rolling requests tempting and wrong — it bypasses the guardrails the tools enforce and can write to a live deployment unreviewed. Stop and report what is blocking instead.

Read the full file on GitHub · 138 lines

Files

What ships with it

4 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.

  1. 2d ago First seen · 138 lines · 221 tokens per session scan A d7a8a3dded38

Subscribe to this mod's changes

formio-application is a skill published in the GitHub repository formio/ai (6 stars, last pushed 2d ago), licensed MIT. It adds 221 tokens to every session and 4,641 once invoked, about $0.0011 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 2026-08-31.

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