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.
Natural language description of desired rights. The agent interprets intent, budget signals, and compatibility from this text.
Rights uses being requested. The agent returns options covering these uses, potentially bundled into composite pricing.
Optionalbuyer_OptionalcountriesCountries where rights are needed (ISO 3166-1 alpha-2). Filters to rights available in these markets.
Optionalbrand_Search within a specific brand's rights. If omitted, searches across the agent's full roster.
Optionalright_Optionalinclude_Include filtered-out results in the excluded array with reasons. Defaults to false.
OptionalpaginationOptionalcontextOptionalext
Search for licensable rights across a brand agent's roster. Returns matches with pricing. Discovery is natural-language-first — no taxonomy for categories. The agent interprets intent from the query and filters based on the buyer's brand compatibility.