spatial-interchange

spatial-interchange is a skill for Claude Code, Codex from dcc-mcp/dcc-mcp-core. It costs 35 tokens per session (498 once invoked), scanned A, original, MIT.

A planning tool for converting coordinate axes and measurement units between 3D applications, game engines, and file formats.

In plain words
What is it for?
Use it to plan a conversion from explicit source and target settings, then apply and check that plan in the relevant importer or exporter.
Why use it?
Different 3D tools may disagree about which direction is up, how axes point, or how large a unit is, causing imported scenes to rotate or scale incorrectly.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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.

agentmods
npx agentmods add skills/dcc-mcp/dcc-mcp-core/spatial-interchange
Any agent
npx skills add dcc-mcp/dcc-mcp-core --skill spatial-interchange
Clone the repo
git clone --depth 1 https://github.com/dcc-mcp/dcc-mcp-core

Made for: Claude Code, 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-interchange

README.md
[![agentmods](https://agentmods.dev/badge/skills/dcc-mcp/dcc-mcp-core/spatial-interchange.svg)](https://agentmods.dev/skills/dcc-mcp/dcc-mcp-core/spatial-interchange)
Your own site
<a href="https://agentmods.dev/skills/dcc-mcp/dcc-mcp-core/spatial-interchange"><img src="https://agentmods.dev/badge/skills/dcc-mcp/dcc-mcp-core/spatial-interchange.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 498 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00035 $0.00498
Opus 5 $0.00017 $0.00249
Sonnet 5 $0.00007 $0.00100
Haiku 4.5 $0.00003 $0.00050

Measured 6d ago against content hash bb27c08b2a02, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

spatial-interchange 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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/plan_conversion.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/spatial-interchange/SKILL.md · 58 lines

What it actually says

Spatial Interchange

Use plan_conversion before a cross-DCC import or export when source and target coordinate conventions are known. The tool returns a pure conversion plan; the importing or exporting adapter remains responsible for applying it to scene data.

Do not infer a convention from a DCC name alone. Query the live scene, import settings, or file metadata first: Maya up-axis and units are scene settings, Blender FBX axes are operator settings, and USD stages carry upAxis and metersPerUnit metadata.

The 3D Transform Visualizer is a useful educational model for signed right/up/forward bases. It is not a file converter or a source of truth for a live scene.

Workflow

  1. Inspect source file/scene axes and physical units.
  2. Inspect the target scene/importer settings.
  3. Call plan_conversion with explicit signed axes and meters per unit.
  4. Apply the returned plan in the owning adapter/importer.
  5. Validate a landmark point, bounds, face orientation, normals, and animation.

Read references/CONVENTIONS.md for official defaults, runtime caveats, and the rules for positions, directions, transforms, and mesh winding.

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 6d ago First seen · 58 lines · 35 tokens per session scan A bb27c08b2a02

Subscribe to this mod's changes

spatial-interchange is a skill published in the GitHub repository dcc-mcp/dcc-mcp-core (42 stars, last pushed yesterday), licensed MIT. It adds 35 tokens to every session and 498 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.

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