decode auth before connection

[kevalmahajan]

🐛 Bug-fix PR

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📌 Summary

Decode auth before trying to connect to sse and streamable http servers as the auth stored in db is encrypted.

🐞 Root Cause

As the auth for connection of mcp servers is authenticated and was not decrypted before connection, connection through sse and streamable http to the mcp servers failed.

💡 Fix Description

For auth_type as bearer, basic and custom headers, decrypt the auth before connection.

🧪 Verification

Check	Command	Status
Lint suite	make lint
Unit tests	make test
Coverage ≥ 90 %	make coverage
Manual regression no longer fails	steps / screenshots

📐 MCP Compliance (if relevant)

• Matches current MCP spec
• No breaking change to MCP clients

✅ Checklist

• Code formatted (make black isort pre-commit)
• No secrets/credentials committed

[MohanLaksh]

PR Test Summary:

Successfully tested adding a sse server with auth and a streamablehttp server(github)
Successfully executed sample tools.

Good to Merge!