Update mcp version 1.20.0 [II] (#16307)

* Update MCP version from 1.10.1 to 1.20.0

- Update mcp dependency: 1.10.1 -> 1.20.0 in requirements.txt, pyproject.toml, and CI config
- Update uvicorn dependency: 0.29.0 -> 0.31.1 (required by MCP 1.20.0)
- Update PyJWT constraint to support newer versions required by MCP
- Update all CI pipeline references to MCP 1.20.0
- Add test to verify MCP version and import compatibility

MCP 1.20.0 requires uvicorn >=0.31.1 and PyJWT >=2.10.1.
MCP package remains Python >=3.10 only (no change to version constraint).

* Update poetry.lock for MCP 1.20.0

* Fix MCP 1.20.0 dependency conflict: relax pydantic pin and regenerate poetry.lock

- Updated pydantic constraint to support both Python 3.8 (<2.11) and Python 3.9+ (>=2.11)
- Relaxed pydantic pin from ==2.10.2 to >=2.11,<3.0.0 in requirements.txt and CI files
- Updated .circleci/config.yml to install pydantic >=2.11 instead of exact pin
- Updated .github/workflows/test-mcp.yml to install MCP 1.20.0
- Regenerated poetry.lock with pydantic 2.12.4 compatible with MCP 1.20.0
- This resolves the CI ResolutionImpossible error where MCP required pydantic>=2.11

Author: Granine

.circleci/config.yml

@@ -139,7 +139,7 @@ jobs:
             pip install python-multipart
             pip install google-cloud-aiplatform
             pip install prometheus-client==0.20.0
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
             pip install "diskcache==5.6.1"
             pip install "Pillow==10.3.0"
             pip install "jsonschema==4.22.0"
@@ -251,7 +251,7 @@ jobs:
             pip install python-multipart
             pip install google-cloud-aiplatform
             pip install prometheus-client==0.20.0
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
             pip install "diskcache==5.6.1"
             pip install "Pillow==10.3.0"
             pip install "jsonschema==4.22.0"
@@ -358,7 +358,7 @@ jobs:
             pip install python-multipart
             pip install google-cloud-aiplatform
             pip install prometheus-client==0.20.0
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
             pip install "diskcache==5.6.1"
             pip install "Pillow==10.3.0"
             pip install "jsonschema==4.22.0"
@@ -732,7 +732,7 @@ jobs:
             pip install python-multipart
             pip install google-cloud-aiplatform
             pip install prometheus-client==0.20.0
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
             pip install "diskcache==5.6.1"
             pip install "Pillow==10.3.0"
             pip install "jsonschema==4.22.0"
@@ -883,8 +883,8 @@ jobs:
             pip install "pytest-cov==5.0.0"
             pip install "pytest-asyncio==0.21.1"
             pip install "respx==0.22.0"
-            pip install "pydantic==2.10.2"
-            pip install "mcp==1.10.1"
+            pip install "pydantic>=2.11,<3.0.0"
+            pip install "mcp==1.20.0"
       # Run pytest and generate JUnit XML report
       - run:
           name: Run tests
@@ -928,7 +928,7 @@ jobs:
             pip install "pytest-cov==5.0.0"
             pip install "pytest-asyncio==0.21.1"
             pip install "respx==0.22.0"
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
             pip install "boto3==1.36.0"
       # Run pytest and generate JUnit XML report
       - run:
@@ -974,7 +974,7 @@ jobs:
             pip install "pytest-cov==5.0.0"
             pip install "pytest-asyncio==0.21.1"
             pip install "respx==0.22.0"
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
       # Run pytest and generate JUnit XML report
       - run:
           name: Run tests
@@ -1150,8 +1150,8 @@ jobs:
             pip install "pytest-asyncio==0.21.1"
             pip install "respx==0.22.0"
             pip install "hypercorn==0.17.3"
-            pip install "pydantic==2.10.2"
-            pip install "mcp==1.10.1"
+            pip install "pydantic>=2.11,<3.0.0"
+            pip install "mcp==1.20.0"
             pip install "requests-mock>=1.12.1"
             pip install "responses==0.25.7"
             pip install "pytest-xdist==3.6.1"
@@ -1203,8 +1203,8 @@ jobs:
             pip install "pytest-asyncio==0.21.1"
             pip install "respx==0.22.0"
             pip install "hypercorn==0.17.3"
-            pip install "pydantic==2.10.2"
-            pip install "mcp==1.10.1"
+            pip install "pydantic>=2.11,<3.0.0"
+            pip install "mcp==1.20.0"
             pip install "requests-mock>=1.12.1"
             pip install "responses==0.25.7"
             pip install "pytest-xdist==3.6.1"
@@ -1562,7 +1562,7 @@ jobs:
             pip install "pytest-asyncio==0.21.1"
             pip install "pytest-cov==5.0.0"
             pip install "tomli==2.2.1"
-            pip install "mcp==1.10.1"
+            pip install "mcp==1.20.0"
       - run:
           name: Run tests
           command: |
@@ -2711,7 +2711,7 @@ jobs:
             pip install "openai==1.100.1"
             pip install "assemblyai==0.37.0"
             python -m pip install --upgrade pip
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
             pip install "pytest==7.3.1"
             pip install "pytest-mock==3.12.0"
             pip install "pytest-asyncio==0.21.1"
@@ -3103,7 +3103,7 @@ jobs:
             pip install aiohttp
             pip install "openai==1.100.1"
             python -m pip install --upgrade pip
-            pip install "pydantic==2.10.2"
+            pip install "pydantic>=2.11,<3.0.0"
             pip install "pytest==7.3.1"
             pip install "pytest-mock==3.12.0"
             pip install "pytest-asyncio==0.21.1"

.circleci/requirements.txt

@@ -8,12 +8,12 @@ redis==5.2.1
 redisvl==0.4.1
 anthropic
 orjson==3.10.12 # fast /embedding responses
-pydantic==2.10.2
+pydantic>=2.11,<3.0.0
 google-cloud-aiplatform==1.43.0
 google-cloud-iam==2.19.1
 fastapi-sso==0.16.0 
 uvloop==0.21.0
-mcp==1.10.1    # for MCP server  
+mcp==1.20.0    # for MCP server  
 semantic_router==0.1.10 # for auto-routing with litellm
 fastuuid==0.12.0
 responses==0.25.7  # for proxy client tests

.github/workflows/test-mcp.yml

@@ -33,8 +33,8 @@ jobs:
         poetry run pip install "pytest-cov==5.0.0"
         poetry run pip install "pytest-asyncio==0.21.1"
         poetry run pip install "respx==0.22.0"
-        poetry run pip install "pydantic==2.10.2"
-        poetry run pip install "mcp==1.10.1"
+  poetry run pip install "pydantic>=2.11,<3.0.0"
+  poetry run pip install "mcp==1.20.0"
         poetry run pip install pytest-xdist
 
     - name: Setup litellm-enterprise as local package