Required tasks by protocol

Each AdCP protocol defines tasks that agents implement depending on their role. This page consolidates the requirements from each protocol specification into a single reference. Legend: Required — the specification mandates implementation. Conditional — required when the agent has a specific capability. Optional — the specification recommends but does not mandate. Some tasks span protocols. For example, list_creative_formats and sync_creatives are defined in the Creative Protocol but also implemented by Media Buy sales agents. These appear under both protocols with a note indicating the source.

Shared

Every AdCP agent, regardless of protocol, implements:

Task	Requirement	Reference
`get_adcp_capabilities`	Required	Capability discovery

Caller-scope RBAC introspection is not a standalone task. Sellers that support scope introspection return a per-account authorization object on sync_accounts and list_accounts responses. See Accounts Protocol — Caller authorization. AdCP task lifecycle state is application-layer state, not MCP-native or A2A-native task state. 3.x sellers MAY advertise non-colliding AdCP aliases for polling and reconciliation: get_task_status for legacy tasks/get, and list_tasks for legacy tasks/list. These aliases are optional compatibility surfaces in 3.x; callers MUST continue to support the legacy names through the 3.x line. Alias and legacy request payloads use the same snake_case shape, including the optional account scope used to keep task visibility within the caller’s authenticated account + principal pair.

Media Buy Protocol

Sales agent (seller)

Task	Requirement	Notes
`get_products`	Required	Inventory discovery
`list_creative_formats`	Required	Format specifications (Creative Protocol task)
`create_media_buy`	Required	Campaign creation and order confirmation
`update_media_buy`	Required	Budget, targeting, pause, cancel
`get_media_buys`	Required	Operational state retrieval
`get_media_buy_delivery`	Required	Delivery metrics at the package level; `reporting_capabilities` MUST be included on every product
`provide_performance_feedback`	Required	Accept buyer optimization signals
`sync_creatives`	Conditional	Required when the sales agent hosts a creative library (Creative Protocol task)
`list_creatives`	Optional	Creative catalog browsing (Creative Protocol task)
`sync_catalogs`	Optional	Product/inventory catalog sync
`sync_event_sources`	Optional	Conversion tracking setup
`log_event`	Conditional	Required when event sources are configured
`sync_audiences`	Optional	First-party CRM audience upload

Sales agents MUST also support at least one transport (MCP or A2A) and declare media_buy in supported_protocols. Reference: Media Buy Specification · Seller integration guide

Orchestrator (buyer)

Orchestrators are not MCP/A2A servers — they call sales agent tasks. Conformant orchestrators MUST:

Authenticate with sales agents
Include required fields per request schemas
Handle asynchronous task-level responses (submitted, working, input-required) and webhook delivery of completion artifacts
Use media_buy_id for all subsequent operations
Respect creative_deadline for creative uploads

Reference: Media Buy Specification — Orchestrator conformance

Creative Protocol

Creative agent

Task	Requirement	Notes
`list_creative_formats`	Required	Format discovery with technical specs
`list_transformers`	Conditional	Required when the agent advertises `creative.supports_transformers: true`
`build_creative`	Optional	Generation, transformation, or library retrieval
`preview_creative`	Optional	Preview rendering
`list_creatives`	Conditional	Required when `has_creative_library: true`
`sync_creatives`	Conditional	Required when the agent accepts creative uploads
`get_creative_delivery`	Optional	Variant-level delivery metrics

Creative agents MUST return authoritative format definitions only for formats they own. Reference: Creative Specification

Signals Protocol

Signal agent

Task	Requirement	Notes
`get_signals`	Required	Signal discovery
`activate_signal`	Required	Signal activation on decisioning platforms

Signal agents MUST enforce access control for private signals and activation keys. Reference: Signals Specification

Brand Protocol

Brand agent

Task	Requirement	Notes
`get_brand_identity`	Required	Core identity is public; authorized callers get deeper data
`get_rights`	Conditional	Required when the agent manages brand rights
`acquire_rights`	Conditional	Required when the agent manages brand rights
`update_rights`	Conditional	Required when the agent manages brand rights
`creative_approval`	Conditional	Required when the agent reviews AI-generated content

Brand agents MUST declare brand in supported_protocols. Reference: Brand Protocol · Building a brand agent

Accounts Protocol

Any agent accepting accounts

Task	Requirement	Notes
`sync_accounts`	Conditional	Buyer-declared accounts (`require_operator_auth: false`) — buyer declares brand/operator pairs; account-id namespaces may use this only for settings updates unless a future explicit capability declares provisioning
`list_accounts`	Conditional	Account-id namespaces (`require_operator_auth: true`) — buyer discovers seller-assigned accounts; singleton credentials SHOULD still return one row so SDKs can auto-select
`sync_governance`	Conditional	Required when the buyer uses campaign governance
`report_usage`	Conditional	Required when the agent charges for services
`get_account_financials`	Optional	Financial summary per account

Agents MUST implement at least one of sync_accounts or list_accounts depending on their account model. An agent MAY implement both (e.g., ad networks that use buyer-declared accounts on the buyer side and account-id namespaces with underlying platforms). Reference: Accounts Protocol

Governance: Campaign

Governance agent

Task	Requirement	Notes
`sync_plans`	Required	Plan creation and amendment
`check_governance`	Required	Validation at purchase, modification, and delivery phases
`report_plan_outcome`	Required	Outcome reporting and budget commitment
`get_plan_audit_logs`	Required	Audit trail retrieval

Reference: Campaign Governance Specification

Governance: Property

Governance agent

Task	Requirement	Notes
`create_property_list`	Required	List creation with filters
`get_property_list`	Required	Resolved property retrieval
`update_property_list`	Required	List modification
`delete_property_list`	Required	List removal
`list_property_lists`	Required	List enumeration
`validate_property_delivery`	Optional	Post-campaign compliance validation

Reference: Property Governance Specification

Governance: Collection

Governance agent

Task	Requirement	Notes
`create_collection_list`	Required	List creation with collection sources and filters
`get_collection_list`	Required	Resolved collection retrieval
`update_collection_list`	Required	List modification
`list_collection_lists`	Required	List enumeration
`delete_collection_list`	Required	List removal

Reference: Collection Governance

Governance: Content Standards

Content standards agent

Task	Requirement	Notes
`create_content_standards`	Required	Standards creation
`get_content_standards`	Required	Standards retrieval
`list_content_standards`	Required	Standards enumeration
`update_content_standards`	Required	Standards modification
`calibrate_content`	Optional	Seller calibration against standards
`validate_content_delivery`	Optional	Post-delivery content compliance
`get_media_buy_artifacts`	Optional	Artifact retrieval for validation

Reference: Content Standards

Governance: Creative

Creative governance agent

Task	Requirement	Notes
`get_creative_features`	Required	Security scanning, content categorization

Reference: Creative Governance

Task	Requirement	Notes
`si_get_offering`	Optional	Pre-session offering lookup
`si_initiate_session`	Required	Session creation with consent
`si_send_message`	Required	Conversational messaging
`si_terminate_session`	Required	Session cleanup

Trusted Match Protocol

TMP uses a different communication model (direct HTTP, not MCP/A2A tasks). See the TMP Specification for message types and conformance requirements.

​Required tasks by protocol

​Shared

​Media Buy Protocol

​Sales agent (seller)

​Orchestrator (buyer)

​Creative Protocol

​Creative agent

​Signals Protocol

​Signal agent

​Brand Protocol

​Brand agent

​Accounts Protocol

​Any agent accepting accounts

​Governance: Campaign

​Governance agent

​Governance: Property

​Governance agent

​Governance: Collection

​Governance agent

​Governance: Content Standards

​Content standards agent

​Governance: Creative

​Creative governance agent

​Sponsored Intelligence Protocol

​Brand agent

​Trusted Match Protocol

Required tasks by protocol

Shared

Media Buy Protocol

Sales agent (seller)

Orchestrator (buyer)

Creative Protocol

Creative agent

Signals Protocol

Signal agent

Brand Protocol

Brand agent

Accounts Protocol

Any agent accepting accounts

Governance: Campaign

Governance agent

Governance: Property

Governance agent

Governance: Collection

Governance agent

Governance: Content Standards

Content standards agent

Governance: Creative

Creative governance agent

Sponsored Intelligence Protocol

Brand agent

Trusted Match Protocol