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.
Optionalformat_Optionalasset_Filter to formats that include these asset types. For third-party tags, search for 'html' or 'javascript'. For published-post reference formats, search for 'published_post'. E.g., ['image', 'text'] returns formats with images and text, ['javascript'] returns formats accepting JavaScript tags.
Optionalmax_Maximum width in pixels (inclusive). Returns formats where ANY render has width <= this value. For multi-render formats, matches if at least one render fits.
Optionalmax_Maximum height in pixels (inclusive). Returns formats where ANY render has height <= this value. For multi-render formats, matches if at least one render fits.
Optionalmin_Minimum width in pixels (inclusive). Returns formats where ANY render has width >= this value.
Optionalmin_Minimum height in pixels (inclusive). Returns formats where ANY render has height >= this value.
Optionalis_Filter for responsive formats that adapt to container size. When true, returns formats without fixed dimensions.
Optionalname_Search for formats by name (case-insensitive partial match)
Optionalpublisher_Deprecated compatibility filter for older 3.x callers. A compatibility implementation MAY project publisher-origin or community-catalog declarations obtained through the registry publisher lookup, but MUST NOT synthesize a publisher catalog from seller products. New callers use GET /api/registry/publisher?domain=... for publisher acceptance and get_products for this seller's deliverability. The pattern below is a syntactic floor, not an SSRF guard.
Optionalproperty_Optionalwcag_Optionaldisclosure_Filter to formats that support all of these disclosure positions. When a format has disclosure_capabilities, match against those positions. Otherwise fall back to supported_disclosure_positions. Use to find formats compatible with a brief's compliance requirements.
Optionaldisclosure_Filter to formats where each requested persistence mode is supported by at least one position in disclosure_capabilities. Different positions may satisfy different modes. Use to find formats compatible with jurisdiction-specific persistence requirements (e.g., continuous for EU AI Act).
Optionaloutput_Filter to formats whose output_format_ids includes any of these format IDs. Returns formats that can produce these outputs — inspect each result's input_format_ids to see what inputs they accept.
Optionalinput_Filter to formats whose input_format_ids includes any of these format IDs. Returns formats that accept these creatives as input — inspect each result's output_format_ids to see what they can produce.
OptionalpaginationOptionalcontextOptionalext
Deprecated
DEPRECATED in 3.2. Compatibility request for legacy named-format discovery. Sales agents expose purchasable canonical declarations on get_products
Product.format_options[]; publisher acceptance comes from adagents.jsonformats[]; creative agents advertise build/validation/preview capabilities on get_adcp_capabilitiescreative.supported_formats[].