x402Shield

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "x402shield": {
      "type": "http",
      "url": "https://x402shield.dev/api/mcp"
    }
  }
}

5 tools

• x402shield_get_demo_policy

  Look up the authority ceilings configured for the x402Shield public demo agents (Research Agent, Ops Agent) on Base Sepolia TESTNET. Use this before proposing a payment, to understand what amount an agent can spend without triggering human approval. This tool does not execute or…

• x402shield_authorize_payment

  Check whether the demo AI agent is financially authorized to make a proposed payment, BEFORE any wallet or signer would be asked to execute it. Returns ALLOW, DENY or REQUIRE_APPROVAL with a reason. This tool does not execute or sign a payment, and it cannot approve its own…

• x402shield_get_authorization

  Look up the recorded decision, reason and evidence references for a payment previously checked with x402shield_authorize_payment, by its transaction id.

• x402shield_list_demo_transactions

  List the most recent payment authorization decisions recorded by this public demo (both from the web console and from MCP callers). Useful to see recent ALLOW/DENY/REQUIRE_APPROVAL activity.

• x402shield_get_evidence

  Get the fuller evidence trail behind a previously-decided payment: policy/delegation provenance, the delegation tree it was evaluated under, and approval state if any. Read-only; never exposes secrets or signing material.

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