{"uid":"cap_7fIbD_3ij9J8ibbtXyha2","slug":"agentdiet-mcp-injection-firewall-mcp-x402-a2a-gateway-f011e294","name":"AgentDiet MCP Injection Firewall — MCP/x402/A2A Gateway","description":"Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.","url":"https://mcp-gateway.agentdiet.dev/v1/mcp-injection-firewall?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","POST"],"type":"string"},"queryParams":{"type":"object","properties":{"text":{"type":"string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"data":{},"status":"ok","roi_proof":{"compression_ratio_pct":91.4}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3rExXiH9EKVkyY75JsjOK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Routes and executes agent-to-agent, MCP, and x402 API requests through a deterministic broker gateway, settling payments in USDC on Base.","exampleAgentPrompt":"Route my GET request with the query text 'summarize today's crypto news' through the AgentDiet MCP gateway broker, picking the best matching MCP server from the 31,000+ available, and settle the $0.005 USDC fee on Base.","exampleUseCases":[{"title":"Unified MCP server discovery and execution","prompt":"I need to call an MCP tool to extract structured data from a webpage — use the AgentDiet broker to find and execute the best available MCP server for this GET request with text 'extract main article content from a news page', and handle the USDC payment automatically."},{"title":"x402 API call with micropayment settlement","prompt":"Run a GET query through the AgentDiet x402 gateway with the text 'latest ETH price' — pick the right downstream x402 API, execute it, and settle the micropayment in USDC on Base for me."},{"title":"A2A agent task delegation via broker","prompt":"Delegate this agent task to the best available downstream A2A agent through the AgentDiet MCP gateway: GET request with input text 'generate a short Python function to sort a list', and show me the execution result and ROI proof when it's done."}],"resultDescription":"Returns a JSON object with a 'data' field containing the downstream execution result, a 'status' field ('ok' on success), and an 'roi_proof' object including a compression_ratio_pct metric (e.g. 91.4%) indicating efficiency of the brokered call.","failureModes":["Insufficient USDC balance or payment failure on Base — payment-related 402 or rejection error","Invalid or unsupported HTTP method provided (only GET/POST accepted)","No matching downstream MCP server or x402 API found for the given text query — empty or error data response","Malformed input object missing required 'type' or 'method' fields — schema validation error","Gateway node unavailable or upstream MCP server timeout — status error or no response"],"whenToPreferThis":"Choose this endpoint when you need a single unified broker to discover and execute calls across 31,000+ MCP servers, x402 APIs, or A2A agents without managing individual integrations, and when you want automatic USDC micropayment settlement on Base. Prefer this over direct MCP or x402 connections when you don't know which downstream provider to target, or when you want deterministic execution with an ROI proof returned.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:42:15.958Z","isFirstParty":false,"canonicalSlug":"agentdiet-mcp-injection-firewall-mcp-x402-a2a-gateway-f011e294"}