chore(main): release 3.0.0 (#119)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "2.19.0"
+  ".": "3.0.0"
 }

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## [3.0.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v2.19.0...v3.0.0) (2026-01-26)
+
+
+### ⚠ BREAKING CHANGES
+
+* CpmAuctionPricingOption, CpmFixedRatePricingOption, VcpmAuctionPricingOption, VcpmFixedRatePricingOption have been consolidated into CpmPricingOption and VcpmPricingOption respectively.
+
+### Features
+
+* add V3 protocol support (Governance, Content Standards, SI, CLI) ([#117](https://github.com/adcontextprotocol/adcp-client-python/issues/117)) ([dfec179](https://github.com/adcontextprotocol/adcp-client-python/commit/dfec179ac58eb14f9a69ce939d4d5fe048bb6b04))
+
 ## [2.19.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v2.18.0...v2.19.0) (2026-01-14)
 
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "2.19.0"
+version = "3.0.0"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}

src/adcp/__init__.py

@@ -193,7 +193,7 @@
     get_adcp_signed_headers_for_webhook,
 )
 
-__version__ = "2.19.0"
+__version__ = "3.0.0"
 
 
 def get_adcp_version() -> str: