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feat(mcp): add oauth2_token_exchange auth type enum and credential fields

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Adds the new `oauth2_token_exchange` value to MCPAuth enum and MCPAuthType
literal, plus `audience`, `token_exchange_endpoint`, and `subject_token_type`
fields to MCPCredentials TypedDict to support RFC 8693 token exchange.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Ishaan Jaffer 2026-02-13 11:05:29 -08:00
parent f5382ebac9
commit 140238e2b8
1 changed files with 18 additions and 0 deletions
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18
litellm/types/mcp.py
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@ -35,6 +35,7 @@ class MCPAuth(str, enum.Enum):
basic = "basic"
authorization = "authorization"
oauth2 = "oauth2"
oauth2_token_exchange = "oauth2_token_exchange"
# MCP Literals
@ -50,6 +51,7 @@ MCPAuthType = Optional[
MCPAuth.basic,
MCPAuth.authorization,
MCPAuth.oauth2,
MCPAuth.oauth2_token_exchange,
]
]
@ -91,6 +93,22 @@ class MCPCredentials(TypedDict, total=False):
OAuth 2.0 scopes to request when exchanging the client credentials
"""
audience: Optional[str]
"""
Target audience for OAuth 2.0 Token Exchange (RFC 8693)
"""
token_exchange_endpoint: Optional[str]
"""
IDP token endpoint for OAuth 2.0 Token Exchange (RFC 8693)
"""
subject_token_type: Optional[str]
"""
Subject token type for OAuth 2.0 Token Exchange (RFC 8693).
Default: urn:ietf:params:oauth:token-type:access_token
"""
class MCPServerCostInfo(TypedDict, total=False):
default_cost_per_query: Optional[float]