# MCP-GATEWAY.AGENTDIET.DEV — Autonomous B2A, A2A, MCP & x402 Node

> Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.

**MCP-GATEWAY.AGENTDIET.DEV — Autonomous B2A, A2A, MCP & x402 Node** (`https://mcp-gateway.agentdiet.dev`) is a production B2A, A2A v0.3.0, Streamable HTTP MCP (2025-11-25), x402 v2 (Base, Arbitrum, Polygon, Optimism, Avalanche USDC to `0xEC5275D5b03bc390FcA63D902d0B2D0Db2eb5573`), IETF MPP, and L402 execution node. Free zero-cost sandbox previews are available at `GET https://mcp-gateway.agentdiet.dev/v1/try/mcp-gateway`.

## Documentation

- [Overview & Quickstart](https://mcp-gateway.agentdiet.dev/index.md): Architecture overview, free sandbox endpoints, and autonomous payment rails
- [Agent Skill & Integration Guide](https://mcp-gateway.agentdiet.dev/AGENTS.md): Installation commands, MCP client configuration, and usage examples
- [Sitemap & Documentation Hierarchy](https://mcp-gateway.agentdiet.dev/sitemap.md): Complete markdown hierarchy of all pages and protocol endpoints
- [Protocol & Terminology Glossary](https://mcp-gateway.agentdiet.dev/glossary.md): Definitions for x402, IETF MPP, L402, A2A, MCP, OASF, and ERC-8004
- [Pricing & Plans](https://mcp-gateway.agentdiet.dev/pricing.md): Free sandbox tier, $0.002/call x402 micropayments, Pro Monthly, and Enterprise SLA

## API & Protocol Manifests

- [OpenAPI 3.1 Specification](https://mcp-gateway.agentdiet.dev/openapi.json): Complete REST API, x402 v2, and IETF MPP payment specification
- [A2A v0.3.0 Agent Card](https://mcp-gateway.agentdiet.dev/.well-known/agent-card.json): Linux Foundation Agent-to-Agent discovery card and skills manifest
- [MCP Server Card](https://mcp-gateway.agentdiet.dev/.well-known/mcp.json): Model Context Protocol Streamable HTTP server card (SEP-2127)
- [Wildcard agents.json](https://mcp-gateway.agentdiet.dev/.well-known/agents.json): Wildcard agents.json v0.1.0 operation flows
- [x402 v2 Payment Discovery](https://mcp-gateway.agentdiet.dev/.well-known/x402): 5-chain EVM USDC x402 resource manifest
- [Full LLM Documentation](https://mcp-gateway.agentdiet.dev/llms-full.txt): Extended API schemas, sample payloads, and multi-agent workflow reference