# Boundary Guard x402

Paid REST and MCP tools for x402 seller checks, paid-path health probes, agent-tool readiness, launch packs, and deterministic receipts.

## Connect

- Transport: Streamable HTTP MCP JSON-RPC
- URL: `https://x402-resource-scanner.vercel.app/mcp`
- Category: `Agent Verification & Security`
- Docs: `https://x402-resource-scanner.vercel.app/llms.txt`
- OpenAPI: `https://x402-resource-scanner.vercel.app/openapi.json`

## When to use

Use this MCP server when an AI agent, marketplace, or developer workflow needs:

1. A low-cost pre-action trust checkpoint before writes/sends/paid calls.
2. A deterministic receipt with evidence hashes and an explicit claim boundary.
3. A read-only x402/OpenAPI/resource readiness scan before listing or integrating an endpoint.
4. Marketplace-safe x402 launch copy, buyer FAQs, launch checklists, and approval packets.
5. A conservative unpaid paid-path health probe that verifies HTTP 402/payment metadata without signing or spending.
6. Agentic.Market/CDP Bazaar indexing readiness evidence.
7. Virtuals ACP Provider or Hybrid agent listing copy, job schemas, resource URL definitions, and launch checks.

## Tools

### `boundary_guard_check`

Boundary Guard Check: Create a Boundary Guard pre-action checkpoint receipt for an agent request, policy decision, and result summary. Suggested xpay price: $0.03/call.

Suggested xpay price: `$0.03`.

### `scan_x402_resource`

x402 Resource Scan: Read-only scan of public x402/OpenAPI metadata and optional marketplace listing staleness. Suggested xpay price: $0.10/call.

Suggested xpay price: `$0.10`.

### `probe_x402_paid_path`

x402 Paid-Path Health Probe: Probe a public x402 endpoint without payment, parse the 402 challenge, compare expected network/asset/price, and return a deterministic health receipt. Suggested xpay price: $0.50/call.

Suggested xpay price: `$0.50`.

### `check_agent_tool_readiness`

Agent Tool Readiness Checker: Check whether an x402/agent-facing tool is ready for agent routing, marketplace listing, and paid-path monitoring, including public agent discovery surfaces (/llms.txt, /agents.txt, /.well-known/mcp.json, /mcp). Tiers: quick $1, deep $5, report $10.

Suggested xpay price: `$1.00`.

### `generate_x402_launch_pack`

x402 Launch Pack Generator: Generate marketplace-safe listing copy, buyer FAQ, launch checklist, approval packet, and claim boundaries for x402/MCP sellers from readiness evidence. Tiers: single $9, service $29, premium $49.

Suggested xpay price: `$9.00`.

### `generate_trust_receipt`

Generate Trust Receipt: Generate a deterministic trust receipt from sanitized request/policy/result/payment summaries. Do not submit raw auth headers, cookies, API keys, private keys, payment signatures, payment response headers, customer prompts, customer documents, or payer-identifying evidence. Suggested xpay price: $0.05/call.

Suggested xpay price: `$0.05`.

## Safety

- Public metadata only by default.
- No private endpoint probing beyond declared manifests/docs.
- No private keys, cookies, wallets, or customer data stored in the service.
- Claim boundary: receipts prove what this service received, hashed, and returned; they do not prove downstream real-world execution.