Prevent Margin Leaks & Surprise LLM Bills: Add a Hybrid Spend Firewall

[sophieamoure2026-ui]

Hi @shanraisshan,

Love the work on shanraisshan/claude-code-best-practice! As you transition from open-source into commercializing your AI agent, you'll likely run into a major scaling problem: power users running infinite loops and bankrupting your LLM budget.

Currently, most frameworks require you to pay the Anthropic/OpenAI bill out of pocket or build a complex Stripe billing backend from scratch.

We built NeuForge Pay, a 5-line Python SDK that acts as a proactive Spend Firewall and Hybrid Merchant of Record. It blocks transactions before inference runs if the user exceeds their session budget, and lets them instantly top-up via Stripe (Credit Card) or Coinbase Commerce (USDC on Base for M2M Agent payments).

You can test how fast unmetered agents destroy margins using our interactive calculator here:
NeuForge AI Margin Leak Calculator

Example Integration:

from neuforge_pay import meter_endpoint, neuforge_stripe_webhook, neuforge_coinbase_webhook

# Mount BOTH Fiat and Crypto webhooks
app.include_router(neuforge_stripe_webhook)
app.include_router(neuforge_coinbase_webhook)

@app.get("/v1/agent/task")
@meter_endpoint(price_charged_usd=0.05, model_name="claude-3-5-sonnet", session_budget_usd=10.00)
async def run_agent_task():
    ...

If you are looking to monetize this project without getting burned by unpredictable LLM usage, we'd love for you to try it out!