SpatialDDS is an open protocol for real-world spatial computing: a shared, typed bus for spatial data, world models, and digital twins across devices and operators. It builds on standard DDS concepts and carries uncertainty, frames, and attribution as first-class citizens. Browse the live specification at spatialdds.org.
The current version is 1.8 (Draft). It is validated the way prior releases were and then some: conformance gates run in CI, the type system has been exercised by a working adapter that translated more than 50,000 messages from an unmodified production vision system into typed 1.8 samples, and recordings decode in third-party readers from the embedded schemas alone. As a draft under the pre-adoption policy (§3.1), the 1.x series may still change before formal adoption, and amendments remain welcome as review lands. The most recent stamped release is 1.7; earlier versions back to 1.2 are kept in the tree. See the CHANGELOG for history.
sections/v*/– the specification sections, appendices, glossary, and references for each version.idl/v*/– the canonical IDL for each version: core, discovery, anchors, events, semantics, sensing, and the provisional modules.manifests/v*/– example JSON manifests for services, anchors, and content.web-binding/– the web binding toolchain: the canonical JSON mapping contract, the generator that derives JSON Schemas from the IDL, golden vectors, and the conformance definition.SpatialDDS-<version>.md/SpatialDDS-<version>-full.md– per-version entry points and the combined documents built from the sections.scripts/– build helpers, includingbuild-spec.sh.
IDL and manifest files are canonical; markdown sections reference them with {{include:...}} placeholders. Rebuild the combined specification after changing any of them:
./scripts/build-spec.sh 1.8For local browsing with navigation and search, the repository carries an MkDocs setup: install MkDocs with the listed extensions, run ./scripts/prepare_mkdocs.py, then mkdocs serve. Pushes to main rebuild and publish the site automatically.
spatialdds-scenescape is the first adapter for a third-party production system: it publishes an unmodified Intel SceneScape deployment's scene analytics as typed SpatialDDS 1.8 samples, was exercised against more than 50,000 real messages from a running deployment, and ships recordings that decode without any of its own code.
The companion SpatialDDS demo is the running reference deployment: live publishers, the Open World Model surface, and bridges you can stand up yourself.
Issues and pull requests are welcome. Open an issue to discuss large changes. See CONTRIBUTING.md for details.
Licensed under the Creative Commons Attribution 4.0 International License. See LICENSE.