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.
OptionalaccountOptionalstatusFilter accounts by status. Omit to return accounts in all statuses.
OptionalpaginationOptionalsandboxFilter by sandbox status. true returns only sandbox accounts, false returns only production accounts. Omit to return all accounts. Primarily used with account-id namespaces where sandbox accounts are pre-existing test accounts on the platform.
Optionalinclude_When true, request recent webhook delivery attempts for each returned account in account.webhook_activity[]. Sellers MAY omit webhook_activity if they do not expose this debug log; when present, three-state semantics match the shared webhook_activity[] contract.
Optionalwebhook_Maximum number of webhook_activity[] records to return per account when include_webhook_activity is true.
OptionalcontextOptionalext
Request parameters for listing accounts accessible to the authenticated agent. For upstream-managed namespaces, this discovers seller/storefront account_id values. For buyer-declared accounts, responses return the natural-key fields needed to reconstruct an AccountRef after a cold start.