From 596e6db86e3b0874f393ed458933e060f9978e39 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8D=89=E5=8E=9F=E7=8B=BC?=
 <20969793+coyoteXujie@users.noreply.github.com>
Date: Fri, 15 Aug 2025 19:08:25 +0800
Subject: [PATCH 1/3] Update _base.py
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Pydantic v2 中适配字段名和字段别名的方式，原始方式
    model_config = ConfigDict(
        # SEE: https://docs.pydantic.dev/latest/api/config/#pydantic.config.ConfigDict.populate_by_name
        validate_by_name=True,
        validate_by_alias=True,
        serialize_by_alias=True,
        alias_generator=to_camel_custom,
    )
会导致  实例化 AgentCard 方法的时候 报错
pydantic_core._pydantic_core.ValidationError: 2 validation errors for AgentCard
defaultInputModes
  Field required [type=missing, input_value={'name': 'Hello World Age...ed_extended_card': True}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.10/v/missing
defaultOutputModes
---
 src/a2a/_base.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/a2a/_base.py b/src/a2a/_base.py
index 6c50734c..1d9debbc 100644
--- a/src/a2a/_base.py
+++ b/src/a2a/_base.py
@@ -31,8 +31,6 @@ class A2ABaseModel(BaseModel):
 
     model_config = ConfigDict(
         # SEE: https://docs.pydantic.dev/latest/api/config/#pydantic.config.ConfigDict.populate_by_name
-        validate_by_name=True,
-        validate_by_alias=True,
-        serialize_by_alias=True,
+        populate_by_name=True,
         alias_generator=to_camel_custom,
     )

From fd679b6e775a8e39dc43e643415b7a05d57db0f7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8D=89=E5=8E=9F=E7=8B=BC?=
 <20969793+coyoteXujie@users.noreply.github.com>
Date: Mon, 18 Aug 2025 09:58:31 +0800
Subject: [PATCH 2/3] Update _base.py
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

默认使用别名进行序列化
---
 src/a2a/_base.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/a2a/_base.py b/src/a2a/_base.py
index 1d9debbc..a7f0444f 100644
--- a/src/a2a/_base.py
+++ b/src/a2a/_base.py
@@ -1,3 +1,4 @@
+from typing import Any
 from pydantic import BaseModel, ConfigDict
 from pydantic.alias_generators import to_camel
 
@@ -34,3 +35,13 @@ class A2ABaseModel(BaseModel):
         populate_by_name=True,
         alias_generator=to_camel_custom,
     )
+
+    def model_dump(
+        self,
+        **kwargs
+    ) -> dict[str, Any]:
+
+        if not 'by_alias' in kwargs:
+            kwargs['by_alias'] = True
+
+        return super().model_dump(**kwargs)

From 712f206d5c6ad145a6bce6ec2b7bdc05b3ac04f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8D=89=E5=8E=9F=E7=8B=BC?=
 <20969793+coyoteXujie@users.noreply.github.com>
Date: Mon, 18 Aug 2025 10:31:47 +0800
Subject: [PATCH 3/3] Update _base.py

fix: ruff linting errors
---
 src/a2a/_base.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/a2a/_base.py b/src/a2a/_base.py
index a7f0444f..76912c3f 100644
--- a/src/a2a/_base.py
+++ b/src/a2a/_base.py
@@ -1,4 +1,5 @@
 from typing import Any
+
 from pydantic import BaseModel, ConfigDict
 from pydantic.alias_generators import to_camel
 
@@ -41,7 +42,7 @@ def model_dump(
         **kwargs
     ) -> dict[str, Any]:
 
-        if not 'by_alias' in kwargs:
+        if 'by_alias' not in kwargs:
             kwargs['by_alias'] = True
 
         return super().model_dump(**kwargs)