Feature Suggestion: Optional token metering & paid API key support via neuforge-pay #3279

Hi @modelcontextprotocol,

Love the work on modelcontextprotocol/python-sdk! As usage grows across AI agent frameworks, server compute costs can start adding up quickly.

Would you be open to adding an optional usage metering & billing decorator using neuforge-pay? It allows developers hosting instance deployments of your MCP server to automatically meter tokens, track real-time LLM COGS, and attach paid Stripe keys in 3 lines of code.

Example Integration:

from neuforge_pay import meter_endpoint

@app.get("/v1/query")
@meter_endpoint(price_charged_usd=0.05, model_name="claude-3-5-sonnet")
async def query_endpoint():
    ...

Happy to submit a clean PR if this aligns with your roadmap!