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fix: raise MCP minimum to 1.21.2 for Pydantic and OAuth compatibility #5384

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Merged
td-oai merged 5 commits into from
Oct 19, 2026
Merged

fix: raise MCP minimum to 1.21.2 for Pydantic and OAuth compatibility #5384

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12a92b0
fix: constrain Pydantic for the oldest MCP compatibility test
td-oai Oct 16, 2026
ac9c46d
fix: enforce MCP-compatible Pydantic in package metadata
td-oai Oct 16, 2026
69eef10
fix: raise MCP minimum to 1.21.1 and retain current Pydantic support
td-oai Oct 16, 2026
ecbf68c
fix: raise MCP minimum to 1.21.2 for the OAuth scope hotfix
td-oai Oct 19, 2026
f22eb55
test: simplify MCP minimum coverage and document version choice
td-oai Oct 19, 2026
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3 changes: 2 additions & 1 deletion .github/scripts/run_integration_tests.py
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Expand Up @@ -486,7 +486,8 @@ def main() -> None:
print(f"[integration] wheel={wheel.name} sdist={sdist.name} profile={args.profile}")

if args.profile == "mcp-v1":
for mcp_version in ("1.19.0", "1.29.0"):
# MCP 1.21.2 includes the Pydantic 2.14 import fix and the OAuth 401 scope hotfix.
for mcp_version in ("1.21.2", "1.29.0"):
environment_kind = f"mcp-v1-{mcp_version}"
python = create_environment(
environment_kind,
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2 changes: 1 addition & 1 deletion pyproject.toml
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Expand Up @@ -13,7 +13,7 @@ dependencies = [
"typing-extensions>=4.12.2, <5",
"requests>=2.0, <3",
"websockets>=15.0, <17",
"mcp>=1.19.0, <3; python_version >= '3.10'",
"mcp>=1.21.2, <3; python_version >= '3.10'",
# Security floors for transitive runtime dependencies.
"httpx2>=2.12.0",
"pyjwt>=2.15.0",
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2 changes: 1 addition & 1 deletion uv.lock
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