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Documentation Index

Fetch the complete documentation index at: https://docs.adcontextprotocol.org/llms.txt

Use this file to discover all available pages before exploring further.

This roadmap outlines the planned evolution of the AdCP protocol. All dates are targets and subject to change based on community feedback and working group progress.

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Version 2.5.0 - Shipped ✅

Released: November 2025 | View Release Notes Version 2.5.0 delivered developer experience and API refinement improvements including:
  • Type Safety & Code Generation - Discriminator fields throughout for excellent TypeScript/Python type inference
  • Batch Creative Previews - Preview up to 50 creatives in a single call (5-10x faster)
  • Schema Infrastructure - Build-time versioning with semantic paths (/schemas/v2.5/)
  • Agent Cards - ADCP extension schema for capability discovery
  • Brand Manifest - Standardized brand information for creative generation
  • Template Formats - Dynamic creative sizing via accepts_parameters (dimensions, duration, etc.)
  • Inline Creative Updates - sync_creatives task for updating creatives in existing campaigns
  • Enhanced Product Filtering - Structured filters with date ranges, budget ranges, countries, and channels
  • Explicit Extension Support - Formal extension mechanism via agent cards

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Through End of 2025

From December 2025 through year end:
  • Patch releases only for bug fixes and critical issues
  • No new features or breaking changes
  • Focus on stability and production readiness

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Version 3.0.0 - Major Update

Target Release: January 15, 2026 Version 3.0 represents a significant evolution of the protocol with several major new capabilities.

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Confirmed Features

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Creative Agent Protocol Enhancements

  • Hosted Creative Sets - New protocol for managing collections of related creatives

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Registry & Discovery

  • Property Registry - Centralized registry for publisher property definitions

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Under Consideration

These features are in active development but may not make the 3.0 release:
  • Better namespace management for custom capabilities

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Future Work (No Target Date)

The following features are in the working group planning stages:

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Governance Protocol

A framework for multi-party approval workflows and delegated authority management. See the Governance Protocol Working Document for details.

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Private Marketplace (PMP) Support

  • Deal ID integration
  • Programmatic guaranteed workflows

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Get Involved

AdCP is developed in the open with active working groups on Slack. We strongly encourage participation in these discussions!

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Join the Community

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Working Group Focus Areas

Current working groups are focusing on:
  • Creative Protocol - Hosted sets and inline updates
  • Registry Architecture - Property and agent discovery
  • Extensions Framework - Protocol extensibility design
  • Governance Model - Multi-party workflow design
  • PMP Integration - Programmatic deal support

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How to Contribute

  1. Join discussions on Slack in relevant channels
  2. Review proposals in GitHub Discussions
  3. Share feedback on draft specifications
  4. Test implementations in your environment
  5. Submit issues for bugs or feature requests

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Release Principles

AdCP follows these principles for releases:

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Version Planning

  • Major versions (3.0, 4.0) - Breaking changes, major new capabilities
  • Minor versions (3.1, 3.2) - New features, backward-compatible additions
  • Patch versions (3.0.1, 3.0.2) - Bug fixes, documentation updates

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Community Input

  • Working group proposals drive feature development
  • Public comment periods before major changes
  • Reference implementations validate design decisions
  • Beta releases for testing before final release

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Backward Compatibility

  • Breaking changes only in major versions
  • 6-month deprecation period for removed features
  • Migration guides for all breaking changes
  • Support for previous major version during transition

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Additional Resources