A set of rules for using Hera, a command-line tool connected to a running Godot game editor.

It guides scene and node changes, signal connections, play control, debugging, runtime checks, screenshots, and visual quality testing in Godot.

It provides verified information about the live editor and running game instead of relying only on project files or guesses.

hera-godot — Cursor rule for Cursor by NotNull92

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.

Clone the repo

git clone --depth 1 https://github.com/NotNull92/hera-agent-godot

Made for: Cursor.

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.

README.md

[![agentmods](https://agentmods.dev/badge/rules/notnull92/hera-agent-godot/hera-godot/github.svg)](https://agentmods.dev/rules/notnull92/hera-agent-godot/hera-godot)

Your own site

<a href="https://agentmods.dev/rules/notnull92/hera-agent-godot/hera-godot"><img src="https://agentmods.dev/badge/rules/notnull92/hera-agent-godot/hera-godot/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.

Your own site · 80×15

<a href="https://agentmods.dev/rules/notnull92/hera-agent-godot/hera-godot"><img src="https://agentmods.dev/badge/rules/notnull92/hera-agent-godot/hera-godot.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 408 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.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.00408
Opus 5	$0.00022	$0.00204
Sonnet 5	$0.00009	$0.00082
Haiku 4.5	$0.00004	$0.00041

Measured 9d ago against content hash f12c9d8e874f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

hera-godot 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 9d 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.

integrations/cursor/hera-godot.mdc · 29 lines

What it actually says

Hera live Godot workflow

Use Hera only with a running Godot editor where the Hera Agent Godot addon is enabled (verified on Godot 4.2–4.7; 4.7 recommended). Treat CLI output as the source of truth for live editor and runtime state.

Start with hera status. If it finds no editor, ask the user to enable the addon under Project Settings → Plugins. If several editors are present, run hera instances and use hera --instance <pid> for mutations.
Before UI work, run hera guidance ui. Keep reads compact: prefer hera --ids scene tree, node get --prop/--props, scoped game ui tree, and game qa discover before full dumps.
Use undoable editor commands (node add/set/remove, signal connect/disconnect) for normal changes. Do not use eval as a shortcut for a normal write. Scene/resource/script/project changes persist; game node set/call, game click, and game input are runtime-only.
Prove each change: re-read the node/property or tree, check hera output --type error or hera diagnostics after runs, and use hera screenshot --runtime --analyze plus game ui tree/semantic clicks for visual QA. Use requirement-covered game qa --file scenarios when validating a prompt implementation.
After editing GDScript, run the project's headless --check-only gate when available. Never print or commit HERA_AGENT_GODOT_TOKEN.

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.

9d ago First seen · 29 lines · 44 tokens per session scan A f12c9d8e874f

Subscribe to this mod's changes

hera-godot is a cursor rule published in the GitHub repository NotNull92/hera-agent-godot (11 stars, last pushed yesterday), licensed MIT. It adds 44 tokens to every session and 408 once invoked, about $0.0002 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 2026-08-30.

Game development

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hera-godot