Borrowing it
Nothing to install: this file belongs to formio/ai. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/formio/ai/main/CLAUDE.mdgit clone --depth 1 https://github.com/formio/aiWrote 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.
[](https://agentmods.dev/instructions/formio/ai/claude-md)<a href="https://agentmods.dev/instructions/formio/ai/claude-md"><img src="https://agentmods.dev/badge/instructions/formio/ai/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/formio/ai/claude-md"><img src="https://agentmods.dev/badge/instructions/formio/ai/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.05188 | $0.05188 |
| Opus 5.5 | $0.02075 | $0.02075 |
| Sonnet 5.5 | $0.01038 | $0.01038 |
| Haiku 4.5 | $0.00519 | $0.00519 |
Grade A, and why
ai CLAUDE.md 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 14d 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.
How it starts
The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
@formio/ai — the Form.io agentic coding toolset. A pnpm + Turborepo monorepo shipping three things: the @formio/mcp Model Context Protocol server (packages/mcp-server/, exposing form_* / role_* / action_* / project_* tools), the @formio/ai agent plugin (plugin/, bundling the server + skill library behind three manifests — .claude-plugin/plugin.json for Claude Code, .cursor-plugin/plugin.json for Cursor, and plugin.json + mcp.json for the vendor-neutral Agent Plugins layout), and a @formio/skill-tests package (packages/skill-tests/) that runs the formio-sdk skill's doc examples against the real @formio/js. The skill library lives at plugin/skills/ (twelve activatable skills). It is also installable skills-only with npx skills add formio/ai, in which case plugin/skills/formio-mcp-setup/ connects the MCP server on first use — every other skill carries a preflight that hands off to it when the Form.io tools are missing, and is forbidden from working around the gap with raw HTTP.
Repository Info
- Organization: Form.io
- License: MIT
- Remote: [email protected]:formio/ai.git
Skills Library
The repository ships a Claude skills library at plugin/skills/ covering every endpoint in the Form.io API Postman collection. The Form.io API surface is consolidated into a single activatable skill at plugin/skills/formio-api/SKILL.md; per-capability-group endpoint details live as reference documents under plugin/skills/formio-api/references/ (one .md file per group, no frontmatter). Claude activates the router skill whenever the user asks about a Form.io REST endpoint and navigates into the relevant reference by scope (platform, project, runtime, pdf).
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.
- 14d ago Changed · +259 tokens per session 4438aef94026
- 17d ago Changed · +36 tokens per session 87d83d639bb0
- 1mo ago Changed · +182 tokens per session 431b6d469563
- 1mo ago Changed · +4 lines · +448 tokens per session 28aea81effaf
- 1mo ago Changed · +4 lines · +473 tokens per session b6825a2cb9ea
- 1mo ago First seen · 93 lines · 3,790 tokens per session scan A ac15e7dce1d8
ai CLAUDE.md is an instructions file published in the GitHub repository formio/ai (8 stars, last pushed 8d ago), licensed MIT. It adds 5,188 tokens to every session, about $0.0208 per session on Opus 5.5. 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.