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.
Unique identifier for this outcome record.
Outcome state. 'accepted' means state updated with no issues. 'findings' means issues were detected. Renamed from status in 3.1 to free the top-level status key for the envelope task-status (TaskStatus) under MCP flat-on-the-wire serialization.
Optionalcommitted_Budget committed from this outcome. Present for 'completed' and 'failed' outcomes.
OptionalfindingsIssues detected. Present only when outcome_state is 'findings'.
Which validation category flagged the issue.
Human-readable description of the issue.
Optionaldetails?: {}Structured details for programmatic consumption.
Optionalplan_Updated plan budget state. Present for 'completed' and 'failed' outcomes.
Optionaltotal_committed?: numberTotal budget committed across all campaigns in the plan.
Optionalbudget_remaining?: numberAuthorized budget minus total committed.
OptionalreplayedSet to true when this response was returned from the idempotency cache rather than from a fresh execution. Set to false (or omitted) when the request was executed fresh. Buyers use this to distinguish cached replays from new executions — matters for billing reconciliation, audit logs, state-machine routing (cached state-tracking fields are historical snapshots, not current state — re-read via the resource's read endpoint), and any downstream system that assumes exactly-once event semantics. From 3.1 onward, replayed MAY appear on responses to any request that resolved via the idempotency cache, including read tools — universal idempotency_key (see security.mdx §Idempotency) means the cache holds read responses too.
OptionalcontextOptionalext
Response from reporting an action outcome. Only returned to the orchestrator (buyer-side agent) that manages the plan. Sellers report delivery data via check_governance with phase 'delivery', not via this task.