formio-mcp-setup

formio-mcp-setup is a skill for Claude Code, Codex from formio/ai. It costs 222 tokens per session (5,468 once invoked), scanned B, original, MIT.

A setup guide for connecting the Form.io MCP server to a coding agent. Form.io is a platform for building and managing online forms, while MCP lets an agent call its tools.

In plain words
What is it for?
Use it to connect the Form.io server, configure a project, and make form-management tools available after reloading the agent.
Why use it?
It addresses the problem where Form.io skills are installed but their required server tools are unavailable or unconfigured.

Skill for Claude CodeCodex

Part of the formio-ai plugin — 15 skills shipped together

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

Made for: Claude Code, Codex.

Or install formio-ai, the plugin that ships this one along with the rest of its 15 skills.

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.

agentmods badge for formio-mcp-setup

README.md
[![agentmods](https://agentmods.dev/badge/skills/formio/ai/formio-mcp-setup.svg)](https://agentmods.dev/skills/formio/ai/formio-mcp-setup)
Your own site
<a href="https://agentmods.dev/skills/formio/ai/formio-mcp-setup"><img src="https://agentmods.dev/badge/skills/formio/ai/formio-mcp-setup.svg" alt="Measured on agentmods" height="20"></a>
Per session 222 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,468 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00222 $0.05468
Opus 5 $0.00111 $0.02734
Sonnet 5 $0.00044 $0.01094
Haiku 4.5 $0.00022 $0.00547

Measured today against content hash 7a7e21aef30e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

formio-mcp-setup scanned grade B with 1 finding 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 today.

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.

Subtle steeringmediumPrompt injection

Instructions that bias recommendations or shape behaviour without the user noticing.

One trap to know about: the `project` command shipped in `@formio/mcp` 0.9.0, and an older binary ignores these arguments, starts its stdio server, reads end-of-input and exits **0 with no output** — so `project get` loo
plugin/skills/formio-mcp-setup/SKILL.md · 239 lines

How it starts

The opening of the file, as written. The whole thing — 239 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Connect the Form.io MCP server

The Form.io skills call tools — form_list, form_create, project_import, project_set, project_get, and the rest. Those tools come from the @formio/mcp server. Skills installed on their own (npx skills add formio/ai) arrive without it, because that installer handles skills only and never touches MCP configuration.

Your job here is to write that configuration, get it approved, and hand control back.

What you are NOT doing

  • Not collecting an API key. Nothing you write into a client configuration file contains a URL, a key, or any other secret.
  • Not continuing the user's original request. Configuration only takes effect after a reload, so this skill ends by asking them to reload and ask again.

You are offering to capture which Form.io project to use — see Step 4. That is one errand for the user rather than two, and it means the first Form.io tool call after the reload works instead of failing with "no project configured". It is an offer, never a requirement.

Step 1 — Confirm the server really is missing

Check whether tools named form_list, form_create, project_import, project_set, and project_get are available to you.

  • All available → nothing to do. Say so in one line and return to the skill that sent you here.
  • All missing → continue to Step 2.
  • Present, but no project_get → the connected server predates that tool, which shipped after the rest of the Form.io tool surface. Skip to "Already connected, but too old" below; the configuration exists, and whether its pinned version can be moved forward is the first thing that branch checks. Decide this from the tool list you can actually call, never from a version number written in prose: the launch commands in this document are restamped on every release and sentences about them are not, so a number here goes stale by one release the moment project_get ships.

Already connected, but too old

Do not write a fresh configuration and do not treat this as a missing server. First ask where the server came from, because a plugin install has no file for you to edit: if the user installed the plugin through a marketplace (Claude Code /plugin install, Cursor's Customize panel, copilot plugin install, VS Code's Install Plugin From Source, or the Codex plugin directory), the pinned version belongs to the plugin, so tell them to update the plugin through the same route they installed it and then reload — do not go hunting for an mcpServers entry nothing wrote, and do not write one, which would leave two servers configured.

Read the full file on GitHub · 239 lines

Files

What ships with it

1 file 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. today Changed 7a7e21aef30e
  2. 4d ago First seen · 239 lines · 222 tokens per session scan B 4d0072bae5bf

Subscribe to this mod's changes

formio-mcp-setup is a skill published in the GitHub repository formio/ai (7 stars, last pushed today), licensed MIT. It adds 222 tokens to every session and 5,468 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it B with 1 finding (subtle steering). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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