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✨ Pass tokens to MCP Server in Git Agent #83

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Merged
maia-iyer merged 4 commits into from
Oct 22, 2025
Merged

✨ Pass tokens to MCP Server in Git Agent #83

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9cdd94e
Pass tokens to MCP Server
maia-iyer Oct 20, 2025
276948c
removed comments
maia-iyer Oct 20, 2025
37ed5e6
remove unnecessary import
maia-iyer Oct 21, 2025
f7a2e19
remove duplicate bearer backend definition
maia-iyer Oct 21, 2025
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32 changes: 4 additions & 28 deletions a2a/git_issue_agent/a2a_agent.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,6 @@
from a2a.types import AgentCapabilities, AgentCard, AgentSkill, TaskState, TextPart, SecurityScheme, HTTPAuthSecurityScheme
from a2a.utils import new_agent_text_message, new_task

from starlette.authentication import AuthCredentials, SimpleUser, AuthenticationBackend
from starlette.middleware.authentication import AuthenticationMiddleware

from git_issue_agent.auth import on_auth_error, BearerAuthBackend, auth_headers
Expand All @@ -33,25 +32,6 @@
logger = logging.getLogger(__name__)
logging.basicConfig(level=settings.LOG_LEVEL, stream=sys.stdout, format='%(levelname)s: %(message)s')

class BearerAuthBackend(AuthenticationBackend):
""" Very temporary demo to grab auth token and print it"""
async def authenticate(self, conn):
try:
auth = conn.headers.get("authorization")
if not auth or not auth.lower().startswith("bearer "):
print("No bearer token provided")
return
token = auth.split(" ", 1)[1]
print(f"TOKEN: {token}")

# Storing the token as the username - not a real life scenario - just demo-ing the passing of creds
user = SimpleUser(token)
return AuthCredentials(["authenticated"]), user
except Exception as e:
logger.error("Exception when attempting to obtain user token")
logger.error(e)


def get_agent_card(host: str, port: int):
"""Returns the Agent Card for the AG2 Agent."""
capabilities = AgentCapabilities(streaming=True)
Expand Down Expand Up @@ -158,14 +138,10 @@ async def execute(self, context: RequestContext, event_queue: EventQueue):
Returns:
None
"""
###
# commenting this out for now since we have external github MCP.
# in the future we need to figure out the token exchange story for this scenario
#
#if settings.JWKS_URI:
# user_token = context.call_context.user._user.access_token
#else:
user_token = settings.GITHUB_TOKEN
if settings.JWKS_URI:
user_token = context.call_context.user._user.access_token
else:
user_token = settings.GITHUB_TOKEN
user_input = [context.get_user_input()]
task = context.current_task
if not task:
Expand Down