> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agentvolumes.org/llms.txt
> Use this file to discover all available pages before exploring further.

# SPDX external dependency namespace

> Canonical URI-backed SPDX extension namespace terms for Agent Volumes external dependency declarations.

Agent Volumes defines a versioned SPDX extension namespace for external dependency declaration terms.

```text theme={null}
https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#
```

The namespace is backed by the specification, the BOM/provenance mapping fixtures, and ADR-0141. It is separate from CycloneDX `agent-volumes:*` property names.

The stable landing page for this namespace is [SPDX external dependency namespace v0.1](/ns/spdx/external-dependency-declarations/v0.1). This page is the v0.1.0-rc.1 release archive copy.

## Canonical terms

| Term                            | Identifier                                                                                             |
| ------------------------------- | ------------------------------------------------------------------------------------------------------ |
| `ExternalDependencyDeclaration` | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#ExternalDependencyDeclaration` |
| `declarationKey`                | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#declarationKey`                |
| `purl`                          | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#purl`                          |
| `constraint`                    | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#constraint`                    |
| `purpose`                       | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#purpose`                       |
| `scope`                         | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#scope`                         |
| `declarationOnly`               | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#declarationOnly`               |
| `resolvedEvidence`              | `https://agentvolumes.org/ns/spdx/external-dependency-declarations/v0.1#resolvedEvidence`              |

Use `av:` as the compact alias in examples only after binding it to the namespace URI.

## JSON-LD context

Agent Volumes publishes a stable canonical JSON-LD context for compact term expansion:

```text theme={null}
https://agentvolumes.org/contexts/spdx-external-dependency-declarations-v0.1.jsonld
```

This release archive preserves an identical copy at `https://agentvolumes.org/spec/0.1.0-rc.1/contexts/spdx-external-dependency-declarations-v0.1.jsonld`. See [SPDX external dependency JSON-LD context](/spec/0.1.0-rc.1/uri-publications/spdx-external-dependency-context) for details and example usage.

## Related sources

* [Namespace and URI publications](/spec/0.1.0-rc.1/uri-publications)
* [ADR-0141](https://github.com/agent-volumes/agent-volumes-spec/blob/main/docs/decisions/0141-use-uri-backed-namespaces-for-spdx-agent-volumes-extension-terms.md)
* [Conformance fixtures](https://github.com/agent-volumes/agent-volumes-spec/tree/main/conformance/fixtures)