{"uid":"cap_Gkz5YOLjakbAUiFYgpaAC","slug":"x402broker-b2a-router-universal-mcp-a2a-meta-router-964d9c3b","name":"x402broker B2A Router — Universal MCP & A2A Meta-Router","description":"Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall. (Live x402 v2, IETF MPP & MCP endpoint at https://x402broker.com/v1/b2a-router)","url":"https://x402broker.com/v1/b2a-router?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"query":{"type":"string","minLength":1,"description":"Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USD","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":"$0.01/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"unknown","protocol":"x402","network":"base","amountUsd":null,"per":"call","confidence":"unknown"},{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5cZZ1rQhG4-PVKLg9gv98","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_UZdr819DxShJhcJLEVwTs","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Single-connection meta-router that indexes and proxies 500+ MCP servers and A2A tools with token compression and prompt-injection firewall","exampleAgentPrompt":"Search across all available MCP servers and A2A tools to find something that can scrape live web pages — give me the top results with compressed metadata so I can pick the right one.","exampleUseCases":[{"title":"Discover MCP tools for a new agent","prompt":"I'm building an agent that needs to send emails and look up stock prices — search the MCP and A2A tool index to find the best tools available for both of those tasks."},{"title":"Single-connection agent swarm routing","prompt":"My swarm of agents all need access to different specialized tools — route each of their requests through one connection to the right MCP server without me having to manage 500 separate integrations."},{"title":"Find a tool with prompt-injection safety","prompt":"I need to discover an MCP server that does PDF extraction, but I want the results filtered through the Prompt-Guard firewall so I don't accidentally expose my agent to prompt-injection attacks."}],"resultDescription":"A compressed, token-efficient list of matching MCP servers and/or A2A tools relevant to the query, including metadata, routing info, and safe-proxied access details. Results are filtered through a Prompt-Guard firewall to block prompt-injection risks.","failureModes":["Query too vague returns broad or unhelpful tool list","No matching tools found for a highly specific query","Prompt-Guard firewall may block legitimate but ambiguous queries","Rate limiting or payment failure at $0.01 USDC per call","Downstream MCP server unavailability reduces result completeness"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to discover or route to any of hundreds of MCP servers or A2A tools through a single connection, especially when token efficiency matters (85% compression) or when security against prompt injection is required. Prefer over manually managing multiple MCP connections or building custom tool registries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:48:18.838Z","isFirstParty":false,"canonicalSlug":"x402broker-b2a-router-universal-mcp-a2a-meta-router-964d9c3b"}