Your API.
Agent-payable.
No rewrites.

$ curl -sX POST https://api.agentgate.md/admin/tenants \
  -H "Authorization: Bearer $PRISM_ADMIN_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "slug": "acme-search",
    "display_name": "Acme Search",
    "credentials": {
      "gateway": {
        "target_url":  "https://api.acme.com",
        "quote_url":   "https://api.acme.com/_prism/quote",
        "settle_url":  "https://api.acme.com/_prism/settle",
        "webhook_secret": "whsec_...",
        "resource_id": "acme.search",
        "fee_bps": 250
      }
    }
  }'

// /your/_prism/quote
export async function POST(req) {
  const { method, path, body_b64 } = await req.json();
  // Static, per-shape, cost-plus, or per-agent — your call.
  return Response.json({
    price_minor: "5000",
    price_asset: "USDC.SOL",
    price_decimals: 6,
  });
}

// /your/_prism/settle
import { verifyPrismSignature } from "./verify";
export async function POST(req) {
  const body = await req.text();
  if (!verifyPrismSignature({
    secret: process.env.PRISM_WEBHOOK_SECRET!,
    timestampHeader: req.headers.get("x-prism-timestamp"),
    signatureHeader: req.headers.get("x-prism-signature"),
    body,
  })) return new Response("unauthorized", { status: 401 });
  const event = JSON.parse(body);
  await db.creditAgent(event.agent_id, event.amount_minor);
  return new Response(null, { status: 200 });
}

# Agent side — any MCP client:
$ claude mcp add prism --transport http https://api.agentgate.md/mcp
✓ mcp/prism registered  (12 tools)

# Operator side — rev-share rolling totals, per asset:
$ curl https://api.agentgate.md/admin/tenants/$ID/gateway/revenue \
  -H "Authorization: Bearer $PRISM_ADMIN_KEY"
{
  "delivered_events": 1247,
  "by_asset": [
    { "asset": "USDC.SOL", "calls": 1247,
      "gross_minor": "6235000", "fee_minor": "162075",
      "net_to_customer_minor": "6072925" }
  ]
}