merge: chore/cleanup-remove-bloat-and-secrets into main

app/routers/x402_mcp_handler.py

@@ -0,0 +1,105 @@
+"""x402 MCP handler — exposes x402 payment as discoverable MCP tools.
+
+Mounts at /mcp/x402 for MCP protocol compatibility.
+Also serves /.well-known/x402 for standard x402 discovery.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+
+from fastapi import APIRouter, HTTPException, Request
+from fastapi.responses import JSONResponse
+
+from app.mcp.x402_mcp_server import TOOLS, handle_mcp_call
+
+router = APIRouter(tags=["x402-MCP"])
+
+# ── Standard MCP endpoint ────────────────────────────────────────
+
+
+@router.post("/mcp/x402")
+async def mcp_x402_handler(request: Request):
+    """MCP protocol handler for x402 payment tools.
+
+    Accepts MCP-standard requests: {"method": "tools/list"} or
+    {"method": "tools/call", "params": {"name": "...", "arguments": {...}}}
+    """
+    body = await request.json()
+    method = body.get("method", "")
+
+    if method == "tools/list":
+        return {
+            "result": {
+                "tools": TOOLS,
+                "server": {
+                    "name": "x402-payment-gateway",
+                    "version": "1.0.0",
+                    "description": "Pay-per-call AI tool access via x402 protocol. 274+ tools across crypto intelligence, security, and analysis.",
+                },
+            }
+        }
+
+    if method == "tools/call":
+        params = body.get("params", {})
+        tool_name = params.get("name", "")
+        arguments = params.get("arguments", {})
+        try:
+            result = await handle_mcp_call(tool_name, arguments)
+            return {"result": result}
+        except ValueError as e:
+            raise HTTPException(status_code=400, detail=str(e))
+
+    raise HTTPException(status_code=400, detail=f"Unknown method: {method}")
+
+
+# ── x402 Discovery endpoint ──────────────────────────────────────
+
+
+@router.get("/.well-known/x402")
+async def well_known_x402():
+    """x402 service discovery document (RFC-like).
+
+    Standard endpoint that x402-compatible clients check to discover
+    payment capabilities, supported chains, pricing, and facilitator info.
+    """
+    from app.routers.x402_enforcement import _ensure_tool_prices, TOOL_PRICES, CHAIN_USDC
+    _ensure_tool_prices()
+
+    paid = sum(1 for v in TOOL_PRICES.values() if v.get("price_usd", 0) > 0)
+    min_price = min(v["price_usd"] for v in TOOL_PRICES.values() if v.get("price_usd", 0) > 0)
+    max_price = max(v["price_usd"] for v in TOOL_PRICES.values() if v.get("price_usd", 0) > 0)
+
+    return {
+        "x402_version": "2.0",
+        "service": "Rug Munch Intelligence x402 Gateway",
+        "operator": "Rug Munch Media LLC",
+        "discovery_url": "https://mcp.rugmunch.io/.well-known/x402",
+        "mcp_url": "https://mcp.rugmunch.io/mcp/x402",
+        "docs_url": "https://docs.rugmunch.io/x402",
+        "payment_address": os.getenv("X402_PAYMENT_ADDRESS", ""),
+        "supported_chains": {
+            chain: {
+                "network": cfg.get("network", ""),
+                "usdc_address": cfg.get("usdc", ""),
+            }
+            for chain, cfg in CHAIN_USDC.items()
+        },
+        "pricing": {
+            "total_tools": len(TOOL_PRICES),
+            "paid_tools": paid,
+            "price_range_usd": {"min": min_price, "max": max_price},
+            "free_trials": True,
+        },
+        "facilitators": [
+            "coinbase_cdp",
+            "payai",
+            "cloudflare_x402",
+            "x402_rs",
+            "primev",
+            "asterpay",
+            "eip7702",
+        ],
+        "status": "active",
+    }