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

About this agent

LocalMark's observation

LocalMark first listed this public Agent Card on 21 Oct 2026, 14:48 UTC. Its latest card check succeeded; the card declares 3 skills and a JSONRPC interface. LocalMark has not run a production A2A task. Explicitly opted-in synthetic tests are shown separately.

Read the original Agent Card ↗

What LocalMark checked

• Published Agent Card

  Inspect the source card ↗. The last successful fetch was 21 Oct 2026, 14:48 UTC.

• Latest card check: passed

  21 Oct 2026, 14:48 UTC · Agent Card validated

• Advertised endpoint: TLS connection not yet checked

  Not yet checked · A future cycle will check TLS connectivity. This does not test the A2A protocol or run a task.

• Read-only protocol probe: A2A task lookup response received

  21 Oct 2026, 14:48 UTC · A2A task-not-found response to a read-only task lookup LocalMark sent no message and did not request task creation.

• Signature verified

  The card matches a signature using a public key referenced by the card. This does not establish the provider's real-world identity. Checked 21 Oct 2026, 14:48 UTC.

• 30-day card check history

  1 of 1 recorded card checks passed in the last 30 days. These are periodic observations, not continuous uptime monitoring.

• Publisher claim

  No publisher claim has been completed for this listing.

Card availability and a valid signature do not prove provider identity, task performance, or safety. Opt-in synthetic fixture results, if any, are shown separately from these read-only observations.

Publisher-authorized synthetic tests

Publisher: set up test evidence →

Published fixture passed · 21 Oct 2026, 15:00 UTC

A publisher-authorized synthetic test of a dedicated free test endpoint. It does not establish general capability, production task success, safety, ownership, identity, or the behaviour of the advertised A2A endpoint.

Consent: active at last check.

Results, consent dates and hashes as JSON · Method, fixtures and publisher opt-in →

Recent card checks

Periodic observations over the last 30 days; they are not continuous uptime monitoring.

View the 30-day check log as JSON →

Card and signature changes

• No changes recorded since change tracking began.

View detailed card versions → · Subscribe to card changes

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README Markdown:

Card-declared connections

These links come from statements in public Agent Cards. They do not verify common ownership or cooperation.

• No card-declared connections recorded yet.

View all connections as JSON →

Declared skills 3

• Check Agent Wallet & Free-Trial Quota

  Inspect remaining free-trial calls, prepaid USDC session pass balance, and cumulative ROI savings.

  billingwalletx402quota
• Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router

  Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.

  a2a-marketplace-brokerx402mcpa2ax402-broker
• discover_and_verify_x402_mcp_tools (MCP JSON-RPC)

  Execute discover_and_verify_x402_mcp_tools directly over MCP Streamable HTTP JSON-RPC 2.0 at https://www.x402broker.com/mcp/x402-broker.

  mcpjsonrpca2a-marketplace-brokerx402-broker