Add Universal MCP sdk

[manojbajaj95]

Description

Server Details

• Changes to: README

Motivation and Context

Adds a new MCP Builder SDK

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

[olaservo]

Thanks for the PR! I had a couple questions - when I try going to the AgentR site I can only get to a page asking to use my GitHub login. Could you share if there is more info on what you are asking users to authenticate to on your website?

[manojbajaj95]

@olaservo The SDK supports building mcp servers that support third party connections, say github with oauth or github with api key. By default we provide a manged server with agentr that has pre configured client_id, client_secret etc to allow users to directly build MCP servers without relying on agentr at all.
For eg, https://github.com/universal-mcp/firecrawl/blob/master/src/universal_mcp_firecrawl/server.py which loads env key fron environment.