fulling: Instructions file for Codex

AGENTS.md

fulling AGENTS.md is an instructions file for Codex, OpenCode from FullAgent/fulling. It costs 874 tokens per session, scanned A, original, MIT.

A set of instructions that tells coding agents how a specific Fulling project is organised and built. It covers the project’s purpose, technologies, coding rules, and current implementation details.

In plain words
What is it for?
Use it when working on the Fulling v3.0 repository, especially for product or architecture work, authentication, Kubernetes, database, and TypeScript changes.
Why use it?
It gives an agent the project context it needs before changing code, reducing guesswork about structure and conventions.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is FullAgent/fulling's own configuration. It tells Codex and OpenCode how to work on fulling itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything fulling configures →

About the project

Fulling is an AI-powered full-stack engineering workspace project whose current foundation provides sign-in, persistent user and session data, protected application access, and a user-scoped boundary for Kubernetes credentials. It is intended for dedicated AI workspaces that combine skills, files, memory, scripts, and runtime environments; the catalogue entry supplies an instruction for working with it.

FullAgent/fulling · 2,444 stars · on GitHub · fulling.ai

Reuse

Borrowing it

Nothing to install: this file belongs to FullAgent/fulling. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/FullAgent/fulling/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/FullAgent/fulling

Made for: Codex, OpenCode.

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.

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README.md
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Your own site
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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.

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<a href="https://agentmods.dev/instructions/fullagent/fulling/agents-md"><img src="https://agentmods.dev/badge/instructions/fullagent/fulling/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 874 This file is loaded in full into every session.
When invoked 874 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00874 $0.00874
Opus 5.5 $0.00350 $0.00350
Sonnet 5.5 $0.00175 $0.00175
Haiku 4.5 $0.00087 $0.00087

Measured 1mo ago against content hash 4e446afeb2f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fulling AGENTS.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 1mo 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.

AGENTS.md · 105 lines

How it starts

The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file provides guidance to AI agents when working with code in this repository.

Project Overview

Fulling v3.0 is building dedicated AI workspaces — persistent, personalizable environments with skills, files, memory, scripts, and runtime. Think of it as an out-of-the-box AI toolkit that users can customize and share.

Read docs/architecture.md before product or architecture work. It is the source of truth for the v3 workspace model.

Tech Stack

  • Next.js 16 (App Router) + React 19 + TypeScript
  • Tailwind CSS v4 + Shadcn/UI
  • Node.js 24 + Prisma + Better Auth
  • Kubernetes + PostgreSQL

Code Conventions

  • TypeScript strict mode
  • Functional components with hooks
  • In lib/platform/: one primary action per file, noun directories + verb file names, boundary comment above main exported function
  • Route-specific components in _components/ directory
  • Shared components in top-level components/

Current Implementation Context

  • GitHub is the only authentication provider.
  • Better Auth stores users, provider accounts, and sessions in PostgreSQL.
  • Each user may store one plaintext kubeconfig; browser APIs never return it.
  • Always use the user-specific K8s service: const k8sService = await getK8sServiceForUser(userId).
  • The current user-level kubeconfig is a foundation boundary, not the final v3 Workspace Runtime ownership model.

UI Direction

The active v3 design system is defined in docs/design.md. It derives from SST and is the source of truth for Fulling's visual language, tokens, typography, spacing, components, states, and responsive behavior. Read it before substantial UI work. Existing UI that conflicts with it is migration work, not design precedent.

Avoid generic AI copywriting cliches such as "Elevate", "Seamless", and "Unleash".

Key Files

  • docs/architecture.md — v3 system architecture and product model
  • docs/design.md — active v3 design system and SST-derived style reference
  • lib/auth/ — Better Auth and application session boundary
  • lib/kubeconfig/ — User credential persistence
  • lib/k8s/ — Validation and user-specific Kubernetes service

Read the full file on GitHub · 105 lines

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. 1mo ago First seen · 105 lines · 874 tokens per session scan A 4e446afeb2f3

Subscribe to this mod's changes

fulling AGENTS.md is an instructions file published in the GitHub repository FullAgent/fulling (2,444 stars, last pushed 2mo ago), licensed MIT. It adds 874 tokens to every session, about $0.0035 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 2026-08-30.

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