> ## Documentation Index
> Fetch the complete documentation index at: https://docs.molpha.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Gateways

> Gateways are Molpha's HTTP front door for signed data, payments, and agent access.

A gateway turns an application request into a Molpha signing round. It discovers the registry, selects nodes, dispatches the API config, collects partial signatures, aggregates them, and returns a payload ready for verification.

## Responsibilities

* Accept SDK, backend, and agent requests.
* Authenticate owner-mode requests.
* Quote and validate exact agent round pricing (`amount == price`).
* Return x402 envelopes when pay-per-request escrow is underfunded.
* Dispatch node rounds and collect aggregate signatures.
* Maintain a settlement outbox for served rounds.
* Self-host via YAML/env config (see [Gateway API](/protocol/gateway#self-hosting)).

## Request paths

| Path                     | Audience                        | Payment model              |
| ------------------------ | ------------------------------- | -------------------------- |
| `POST /v1/round/execute` | Feed owners and backends        | Subscription / owner auth  |
| `POST /v1/agent/execute` | AI agents and one-off consumers | x402 or AgentEscrow        |
| SDK gateway client       | TypeScript apps                 | Wraps gateway HTTP details |
| MCP server               | AI clients                      | Wraps SDK + guardrails     |

## Why gateways are first-class in Brebeneskul

Brebeneskul adds economic routing around each request. The gateway is no longer only a convenience wrapper around nodes; it is also the coordination point for access models, payment checks, x402 envelopes, and settlement batching.

## Related pages

<CardGroup cols={2}>
  <Card title="Gateway API" icon="book" href="/protocol/gateway">
    Endpoint schemas, auth, agent endpoints, and self-hosting config.
  </Card>

  <Card title="x402 escrow" icon="credit-card" href="/access-models/x402">
    Pay-per-request agent access and settlement.
  </Card>
</CardGroup>