gaesup-world: Command for Codex

.codex/prompts/spatial-runtime-feature.md

spatial-runtime-feature is a command for Codex from jigglypop/gaesup-world. It costs 0 tokens per session (370 once invoked), scanned A, original, MIT.

A development procedure for adding or changing shared spatial runtime features in a game or interactive 3D project. It requires checking existing services, state stores, events, public exports, examples, and project boundaries before implementation.

In plain words
What is it for?
Use it to plan and implement shared runtime features, choose the correct source of truth, reuse existing systems, handle compatibility, and verify changes in stages.
Why use it?
It reduces duplicated abstractions and helps prevent changes from breaking public interfaces, saved or networked data, or existing game systems.

Command for Codex

Written for Codex: installed under .codex/. Also seen: mentions AGENTS.md; mentions Codex.

This is jigglypop/gaesup-world's own configuration. It tells Codex how to work on gaesup-world 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 gaesup-world configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jigglypop/gaesup-world. 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/jigglypop/gaesup-world/master/.codex/prompts/spatial-runtime-feature.md
Clone the repo
git clone --depth 1 https://github.com/jigglypop/gaesup-world

Made for: 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.

agentmods badge for spatial-runtime-feature

README.md
[![agentmods](https://agentmods.dev/badge/commands/jigglypop/gaesup-world/spatial-runtime-feature/github.svg)](https://agentmods.dev/commands/jigglypop/gaesup-world/spatial-runtime-feature)
Your own site
<a href="https://agentmods.dev/commands/jigglypop/gaesup-world/spatial-runtime-feature"><img src="https://agentmods.dev/badge/commands/jigglypop/gaesup-world/spatial-runtime-feature/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.

agentmods 80×15 button for spatial-runtime-feature

Your own site · 80×15
<a href="https://agentmods.dev/commands/jigglypop/gaesup-world/spatial-runtime-feature"><img src="https://agentmods.dev/badge/commands/jigglypop/gaesup-world/spatial-runtime-feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 370 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00370
Opus 5.5 $0.00000 $0.00148
Sonnet 5.5 $0.00000 $0.00074
Haiku 4.5 $0.00000 $0.00037

Measured 1mo ago against content hash 5bf15f142d0c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spatial-runtime-feature 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.

.codex/prompts/spatial-runtime-feature.md · 60 lines

What it actually says

Spatial Runtime Feature

공용 spatial runtime 기능을 추가하거나 구조를 바꿀 때 사용한다.

먼저 읽기

  1. AGENTS.md
  2. .codex/context/engineering.md
  3. .codex/context/invariants.md
  4. .codex/context/product-boundary.md
  5. .codex/context/spatial-runtime.md
  6. .codex/context/harness-gates.md
  7. 관련 domain context
  8. .codex/plans/active/의 관련 epoch

Discovery

구현 전에 반드시 다음을 검색한다.

  • 동일 목적 service/manager
  • registry
  • store
  • hook/controller
  • event
  • public export
  • examples consumer
  • save/network binding

새 abstraction을 만들기 전에 기존 것과 왜 합칠 수 없는지 설명한다.

Decision

다음을 한 번에 보고한다.

  • owner domain
  • current source of truth
  • target source of truth
  • existing reuse
  • product boundary 판정
  • smallest migration slice
  • compatibility strategy
  • verification ladder

architecture boundary, public API contract 또는 source of truth가 바뀌면 epoch track으로 전환한다.

Implementation Rules

  • full rewrite 금지
  • existing building placement, character stack, teleport action, network adapter를 먼저 재사용
  • Layer 1/2/3 boundary 준수
  • persistent/network contract는 engine-neutral serializable primitive 사용
  • product SNS/backend/AI brain logic core 침투 금지
  • public 기능은 examples에서 public package import로 접근 가능해야 함

Completion

.codex/context/harness-gates.md를 검사한다.

실행한 검증만 기록하고 실패/미실행을 분리한다. required gate 실패 시 완료로 보고하지 않는다.

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 · 60 lines · 0 tokens per session scan A 5bf15f142d0c

Subscribe to this mod's changes

spatial-runtime-feature is a command published in the GitHub repository jigglypop/gaesup-world (22 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 370 tokens. 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 2026-09-09.