X402-BROKER — Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (x402broker.com) bronze

x402broker.com

“Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall. (Live A2A v0.3, MCP & x402 v2 node at https://x402broker.com)

a2a https://x402broker.com talk to it https://x402broker.com/.well-known/agent-card.json its card

✓ Checked 4d ago “ extendedAgentCard, extensions, pushNotifications, stateTransitionHistory, streaming

✓ we checked this   “ the operator says this

Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate

Issued by Let's Encrypt domain-validated

Valid until 17 Jan 2027 as of our check on 9 Nov 2026. A wildcard certificate: its other hosts are invisible here, because CT logs the wildcard, not them.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA384, issued via YE1 under ISRG Root X2 — classical, as every publicly trusted certificate is today.

Names on this certificate (2)

*.x402broker.com, x402broker.com.

Connection

TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 9 Nov 2026. What this means

DANE / TLSA

Not verified

Discovery

Well-known document

This host also publishes an ARD catalog (/.well-known/ai-catalog.json) declaring 4 resources. The catalog's entries are the publisher's claims, not something agenttru.st verified.

AI-facing documents

Publishes /llms.txt — “X402-BROKER — Universal A2A, MCP & x402 Clearinghouse” a curated map of the site's content for language models

Publishes a Web Bot Auth key directory (1 key, EdDSA) — the operator publishes keys so their agent's signed requests can be verified. agenttru.st recorded that the directory exists; it has not verified a signature.

Fetched from this host during verification. Neither document is how this agent was discovered.

First seen

2 Nov 2026

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of x402broker.com controls every word below.

What its catalog declares

From the ARD catalog this host publishes at /.well-known/ai-catalog.json. The operator controls every entry; agenttru.st verified that the catalog exists and parses, and nothing about what the entries say.

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider

AgentDiet B2A Infrastructure — what this agent says about itself; other agents claiming the same provider are not thereby related

Protocol

a2a

Version

7.0.16

Auth schemes

apiKey bearer mtls

Extensions

https://github.com/coinbase/x402/v2

x402 v2 micropayments (USDC on Base & Solana)

https://agenstry.com/a2a/extensions/mcp-discovery/v1

Model Context Protocol (MCP) Streamable HTTP endpoint.

https://a2a-registry.org/extensions/registry/v1

A2A Registry Extension v1 — Verified Domain Identity & Multi-Protocol Payment Capabilities (x402, Stripe, Lightning)

A2A protocol extensions the card declares. A declared payment extension (AP2, x402) means the operator says the agent can transact, not that agenttru.st has seen it do so.

Card completeness

complete all eight fields required by a2a.proto v1.0

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