Docs and reference implementation for the Ad Context Protocol
Open standard for advertising automation over MCP and A2A protocols
AdCP is an open standard that enables AI agents to discover inventory, buy media, build creatives, activate audiences, and manage accounts across advertising platforms. It defines domain-specific tasks and schemas that work over MCP and A2A as transports.
docs.adcontextprotocol.org — Full protocol specification, integration guides, and task reference.
| Protocol | Description | Key tasks |
|---|---|---|
| Media Buy | Inventory discovery, campaign creation, delivery reporting | get_products, create_media_buy, get_media_buy_delivery |
| Creative | Ad creative management across channels | build_creative, preview_creative, list_creative_formats |
| Signals | Audience and targeting data activation | get_signals, activate_signal |
| Accounts | Commercial identity and billing | sync_accounts, list_accounts, report_usage |
| Governance | Brand suitability and content standards | create_content_standards, calibrate_content |
| Brand | Brand identity discovery and resolution | brand.json well-known file |
| Sponsored Intelligence | Conversational brand experiences | si_initiate_session, si_send_message |
| Curation | Media inventory curation | Coming soon |
adcontextprotocol/
├── docs/ # Protocol documentation (Mintlify)
│ ├── media-buy/ # Media Buy protocol
│ ├── creative/ # Creative protocol
│ ├── signals/ # Signals protocol
│ ├── accounts/ # Accounts protocol
│ ├── governance/ # Governance protocol
│ ├── brand-protocol/ # Brand protocol
│ └── sponsored-intelligence/
├── server/ # Express server (registry, API, MCP)
│ ├── src/ # TypeScript source
│ └── public/ # Static pages (homepage, registry UI)
├── static/
│ ├── schemas/ # JSON schemas
│ └── openapi/ # OpenAPI specs
├── tests/ # Schema validation and integration tests
└── scripts/ # Build and release tooling
npm install
docker compose up --build # Starts PostgreSQL + app with auto-migrations
The server runs on port 3000. Docs run separately with mintlify dev on port 3333.
npm test # Run tests (schemas, examples, migrations)
npm run build # Build TypeScript
npm run typecheck # Type check
npm run lint # Lint
See CLAUDE.md for detailed development guidelines.
Schemas are available at /schemas/latest/:
/schemas/latest/index.json/schemas/latest/core/*.json/schemas/latest/media-buy/*.json, /schemas/latest/signals/*.json/schemas/latest/enums/*.jsonSee static/schemas/README.md for validation examples.
AdCP is a project of AgenticAdvertising.Org, a pending 501(c)(6) nonprofit trade association incorporated in Delaware. The Foundation operates with four equally-weighted voting classes (brands, agencies, publishers, technology providers) and an open Working Group that develops AdCP. Reference sell-side implementation is maintained by the Prebid community — spec governance (AAO) and reference-implementation development (Prebid) are intentionally separate organizations.
All contributions are under Apache 2.0, which includes an express patent grant from contributors. Examples in docs and test vectors use fictional brands only — see CONTRIBUTING.md.
We welcome contributions from platform providers, agencies, developers, and industry experts. See CONTRIBUTING.md for guidelines. All contributors must agree to the IPR Policy.
Licensed under Apache 2.0.