Add powforge: L402 Lightning payment decorator for CrewAI tools

[zekebuilds-lab]

What this adds

powforge — an open-source L402 Lightning payment decorator for CrewAI, LangChain, and AutoGen tool functions.

The problem it solves

When you publish a CrewAI @tool, anonymous agents can call it indefinitely with no billing story. powforge adds a one-decorator paywall over Lightning:

from powforge.l402 import wrap_with_l402
from crewai.tools import tool

@wrap_with_l402(price_sats=21)
@tool
def my_expensive_tool(query: str) -> str:
    ...

The first call returns HTTP 402 with an L402 challenge (BOLT-11 invoice + macaroon). The agent pays the invoice over Lightning and retries with the macaroon as a bearer token. No accounts, no API keys, no custody.

Why it fits the Integrations list

• Direct CrewAI and LangChain integration — pairs with the existing OpenCommerce row as the Lightning-native counterpart to the stablecoin/USDC option
• STDIO-safe (works for MCP servers, not just HTTP endpoints)
• Open source, MIT licensed
• Maintained by an individual developer (not a company product)

Links

• PyPI: https://pypi.org/project/powforge/
• Homepage / docs: https://powforge.dev

Happy to revise the description or move the row if there's a better fit.