Optionaladcp_Release-precision AdCP version (VERSION.RELEASE, e.g. "3.0", "3.1", "3.1-beta"). On a request: the buyer's release pin — the seller validates against its supported_versions and returns VERSION_UNSUPPORTED on cross-major mismatch, or downshifts to the highest supported release within the same major. On a response: the release the seller actually served — clients SHOULD validate the response against that release's schema, not against their pin. Patches are not negotiated; surface them as build_version on capabilities for operational visibility. When omitted, falls back to adcp_major_version (deprecated) or server default. Buyers SHOULD emit both adcp_version and adcp_major_version through 3.x to remain compatible with sellers that only read the legacy field. NORMALIZATION: SDKs that read full-semver values from bundle metadata (e.g. ComplianceIndex.published_version = "3.1.0-beta.1") MUST normalize to release-precision ("3.1-beta.1") before emitting on the wire — meta-field values are NOT valid wire values.
Optionaladcp_DEPRECATED in favor of adcp_version (release-precision string). Servers MUST continue to honor this field through 3.x. Removed in 4.0. Original semantics: the AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.
Optionalplan_Plan IDs to retrieve. For a single plan, pass a one-element array. Plans uniquely scope account and operator; do not include a separate account field — the governance agent resolves account from each plan. Including account is rejected by additionalProperties: false.
Optionalportfolio_Portfolio plan IDs. The governance agent expands each to its member_plan_ids and returns combined audit data.
Optionalgovernance_Filter audit entries by governance context. Returns only checks and outcomes that share these governance contexts, enabling lifecycle tracing across purchase types.
Optionalpurchase_Filter audit entries by purchase type. Returns only checks and outcomes matching these purchase types (e.g., ['rights_license'] to see all rights activity).
Optionalinclude_Include the full audit trail. Default: false.
OptionalcontextOptionalext
Retrieve governance state and audit trail for one or more plans.