> For the complete documentation index, see [llms.txt](https://docs.therisk.global/organization/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.therisk.global/organization/standards/catalogue.md).

# Standards catalogue

The Nexus Standards, NS-0 to NS-16 and the Nexus Risk Standards, each linked to its page on nexustandards.com.

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Each standard is published on [nexustandards.com](https://nexustandards.com/standards/), where its status, versions and text are kept. Status on that site governs; this list only points to it. Machine-readable registries and data are distributed through nexustandards.com; see [Adopt and implement the Nexus Standards](https://nexustandards.com/adopt-and-implement/).

| Standard                                                                                                                                                                                      | UNI                 |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------- |
| [NS-0: Constitution and principles](https://nexustandards.com/standards/ns-0/)                                                                                                                | `NXS-STD-ST-000004` |
| [NS-1: The UNI and the artifact catalog (grammar v0.2)](https://nexustandards.com/standards/ns-1/)                                                                                            | `NXS-STD-ST-000001` |
| [NS-2: Citation and attribution format for UNIs](https://nexustandards.com/standards/ns-2/)                                                                                                   | `NXS-STD-ST-000009` |
| [NS-3: Risk record UNIs (grammar, legacy crosswalk, allocation authority)](https://nexustandards.com/standards/ns-3/)                                                                         | `NXS-STD-ST-000003` |
| [NS-3b: Dataset and product metadata profile (STAC, DCAT, PROV-O)](https://nexustandards.com/standards/ns-3b/)                                                                                | `NXS-STD-SW-000005` |
| [NS-4: Structure and drafting of Nexus Standards and documents (v0.2)](https://nexustandards.com/standards/ns-4/)                                                                             | `NXS-STD-ST-000010` |
| [NS-5: Figure, map and visualization standard (with the UI/UX kit)](https://nexustandards.com/standards/ns-5/)                                                                                | `NXS-STD-ST-000011` |
| [NS-6: Surface wiring (API header, panel provenance, passports, OpenAPI)](https://nexustandards.com/standards/ns-6/)                                                                          |                     |
| [NS-7: Resolver landing pages, page meta tags, sitemap](https://nexustandards.com/standards/ns-7/)                                                                                            |                     |
| [NS-8: Zenodo publishing workflow with legal gate, DOI write-back, Software Heritage archival](https://nexustandards.com/standards/ns-8/)                                                     |                     |
| [NS-9: Contextual UNIs (deployments, instances, programme instances)](https://nexustandards.com/standards/ns-9/)                                                                              | `NXS-STD-ST-000005` |
| [NS-10: Policies and clauses (machine-readable obligations)](https://nexustandards.com/standards/ns-10/)                                                                                      | `NXS-STD-ST-000006` |
| [NS-11: Verification and monitoring (evidence, attestations, zero-trust conformance observation)](https://nexustandards.com/standards/ns-11/)                                                 | `NXS-STD-ST-000007` |
| [NS-12: Software, model and AI/ML artifacts (supply chain, model cards, dataset sheets)](https://nexustandards.com/standards/ns-12/)                                                          | `NXS-STD-ST-000012` |
| [NS-13: Standards development process (open proposals, review, versioning, adoption)](https://nexustandards.com/standards/ns-13/)                                                             | `NXS-STD-ST-000008` |
| [NS-14: Conformance and crosswalk to external standards](https://nexustandards.com/standards/ns-14/)                                                                                          | `NXS-STD-ST-000013` |
| [NS-15: System model binding (identity levels, passports, chronotopes, relationships, risk routes and engines, cell intelligence, agent genomes)](https://nexustandards.com/standards/ns-15/) | `NXS-STD-ST-000014` |
| [NS-16: UNI application profile (context names such as NXS-GRX-WAT-CAN; how articles, documents, code, data, APIs and interfaces carry the UNI)](https://nexustandards.com/standards/ns-16/)  | `NXS-STD-ST-000015` |
| [NRS: Nexus Risk Standards](https://nexustandards.com/standards/nrs/)                                                                                                                         | `NXS-STD-DS-000004` |

A UNI is the identifier the catalogue gives an artefact; see [The UNI: catalog and resolver](https://nexustandards.com/uni/).


---

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