# Update Godot Gdextension Interface

> Update Godot GDExtension C header files and json metadata.

- Skill: `godot-go/update-godot-gdextension-interface` (Agent Skill)
- Install (CLI): `npx skillmds@latest add godot-go/update-godot-gdextension-interface`
- Raw SKILL.md: https://api.skillmd.com/api/skills/godot-go/update-godot-gdextension-interface/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: godot-go (https://skillmd.com/u/godot-go)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/godot-go/update-godot-gdextension-interface

---

Run `godot --version` to determine the godot version:
```
% godot --version
4.5.1.stable.custom_build.f62fdbde1
```

## Update `godot_headers/` Files

Run `make update_godot_headers_from_binary` if the `extension_api.json` doesn't match the godot version:
```json
...
	"header": {
		"version_major": 4,
		"version_minor": 5,
		"version_patch": 1,
		"version_status": "stable",
		"version_build": "custom_build",
		"version_full_name": "Godot Engine v4.5.1.stable.custom_build",
		"precision": "single"
	},
...
```

This does 2 things 
1. GDExtension header file "gdextension_interface.h". This file is the base file required to implement a GDExtension.
2. Generate a JSON dump of the Godot API for GDExtension bindings named "extension_api.json" in the current folder.


## Generate Go Codegen wrapping the godot_headers files

Run `make generate`