Your agent doesn't need
a backend. It is the backend.

from agentend import Agentend, Capability, tool

app = Agentend()

@app.capability("invoice_processing")
class InvoiceProcessor(Capability):
    """Extract, verify, and summarize invoices."""
    workers = ["extract", "verify", "summarize"]

    def get_domain_context(self, ctx):
        return "You process business invoices. Be precise with amounts."

    @tool
    def save_invoice(self, data: dict) -> str:
        db.invoices.insert(data)
        return f"Invoice {data['id']} saved"

if __name__ == "__main__":
    app.serve()