Bring dMatrix decision-capture to your favorite AI assistant. dMatrix notices when you're weighing alternatives, evaluating trade-offs, or making a decision — and offers to capture it as a structured, auditable decision matrix.
| Assistant | Guide | One-step setup? |
|---|---|---|
| Claude (Code, claude.ai, Desktop) | claude/README.md | ✅ One install in Claude Code — the app adds one click (plugin → Connectors → Install) |
| OpenAI (ChatGPT & Codex — one app) | openai/README.md | ✅ One plugin install in the ChatGPT desktop app or Codex CLI — web adds the Skill + MCP server in two steps |
| Google (Antigravity CLI) | google/README.md | ✅ Antigravity plugin |
- The behavior — instructions that teach the assistant how to capture a decision (when to offer, how to draw out options, criteria, and scores).
- The connection to dMatrix — linking the assistant to your dMatrix account so it can actually create and save your decision matrix.
Both parts are required. With only the behavior, the assistant can talk about your decision but can't create or save anything in dMatrix — so it ends up offering help it can't deliver. Always set up both. Some assistants do it in one step; others take two. Each guide walks you through it. You'll need a free dMatrix account — sign up at dmatrix.com.
Once set up, the assistant will:
- Detect decision signals — comparative evaluation, trade-off language, criteria-based reasoning, explicit "help me decide" framing.
- Offer to capture — a brief, non-blocking suggestion, never interrupting your flow.
- Build a structured matrix — options, criteria, scores, and weights, extracted from what you actually said.
- Track provenance — every value links back to its source, with confidence levels and citations.
Detection stays conservative — dMatrix only offers to capture on a clear decision signal, and never interrupts.
You don't have to wait for the assistant to notice a decision. At any point, type:
/dmatrix:decide
This works in Claude Code, Codex CLI, and Antigravity CLI. It tells the assistant to capture a decision right now — even if you're mid-conversation, or looking back at a decision you already made. The assistant will review what you've discussed and build a matrix from it.
Use it when:
- You realize a past conversation contained a decision worth capturing.
- You want to structure a decision you're actively working through.
- The assistant didn't offer on its own and you'd like it to.
shared/canonical-prompt/source.md # The single source of truth (canonical behavior)
.claude-plugin/ · .codex-plugin/ # Claude + ChatGPT/Codex plugin manifests; self-vending marketplace
.mcp.json # Shared MCP wiring (one file, both plugins)
# (this repo is its own single-plugin marketplace: source "./")
skills/decide/SKILL.md # The dMatrix Skill (Claude & Codex plugins / standalone)
claude/README.md # Claude install guide (all surfaces)
openai/ # ChatGPT web paste-in + manual Codex fallbacks (AGENTS.md, config.toml)
google/antigravity/dmatrix/ # Antigravity CLI plugin bundle
mcp/connectors/ # Host-agnostic MCP connector reference
assets/ # Brand logos (dM tile) — emitted by the renderer, used by the plugin manifests + this README
Every behavior-bearing artifact is generated from one source,
shared/canonical-prompt/source.md, by the renderer pipeline in the dMatrix monorepo
(packages/canonical-prompt). The pipeline injects the canonical body verbatim into
each surface — only the per-provider wrapper differs — and stamps a content hash
(version_hash) so every artifact stays provably in sync. To re-sync after the canonical
prompt changes, the pipeline regenerates this whole repo in one run; the artifacts here
are not edited by hand.
Copyright © 2026 Oxford Heavy Industries, LLC. All rights reserved. dMatrix is a product of Lockstride, a division of Oxford Heavy Industries, LLC.
These extensions are free to install and use with your own dMatrix account. They are not open source: copying, redistribution, modification, and derivative works are not permitted, and the dMatrix name, logos, and icons are trademarks that this license does not grant any right to use. See LICENSE for the full terms.
- Issues: github.com/lockstride/dmatrix-extensions/issues
- dMatrix account & app: dmatrix.com