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SCRIPTMASTERLABS — x402 Gateway

com.scriptmasterlabs/x402-gatewayscriptmasterlabs.comstreamable-httpv1.4.0Scanned

x402 Gateway MCP (canonical host): discover the SML x402 payment contract + gateway status. Free.

3 tools: 3 only read.

Tools: 0 delete, 0 irreversible, 0 write, 3 read.
  • Reads private data · 0
  • Reads text others write · 0
  • Can send data out · 0
  • No findings

Sign-in required, no OAuth metadata. Remote posture

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Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

3 tools

Only reads 3Show 3 read-only tools
  • sml_discoverFind the x402 Gateway contract and where to inspect fresh payment requirements.No findings

    Why it is in this group

    • The description's first verb is "find": a word for reading.
    Description, as the server wrote it
    Find the x402 Gateway contract and where to inspect fresh payment requirements. FREE.

    Annotations the server declares

    • title: Discover SML x402 Gateway
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • sml_statusCheck the public x402 Gateway identity and canonical payment rail.No findings

    Why it is in this group

    • The name "sml_status" says "status": a word for reading.
    Description, as the server wrote it
    Check the public x402 Gateway identity and canonical payment rail. FREE.

    Annotations the server declares

    • title: Inspect SML Gateway Status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • x402_contractInspect the canonical x402 payment contract.No findings

    Why it is in this group

    • The description's first verb is "inspect": a word for reading.
    Description, as the server wrote it
    Inspect the canonical x402 payment contract. Returns network, USDC asset, payTo, headers, and the rule for resolving fresh target requirements. FREE.

    Annotations the server declares

    • title: Inspect x402 Contract
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Sign-in required, no OAuth metadata

Looked at Oct 22, 2026, 14:40 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable
yes
HTTP status of an anonymous initialize
404
tools/list served without credentials
no
Tools that change things, listed without credentials
0
Protocol version
not observed
WWW-Authenticate on 401
not observed
resource_metadata in WWW-Authenticate
not observed
RFC 9728 protected resource metadata
not observed
Authorization servers
not observed
Legacy HTTP+SSE transport
no
Dynamic client registration
not observed
Client ID metadata documents
not observed

The probe stopped: initialize answered HTTP 404.

Findings

Matches of fixed checks, with the text they matched.

No check matched anything in these tool definitions. That is not a safety guarantee.

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.4.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http x402-gateway https://mcp-x402.onrender.com/mcp?registry=scriptmasterlabs
claude mcp add --transport http x402-gateway https://mcp-x402.onrender.com/mcp?registry=scriptmasterlabs

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__x402-gateway__sml_discover",
      "mcp__x402-gateway__sml_status",
      "mcp__x402-gateway__x402_contract"
    ],
    "ask": [],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as x402-gateway. Review it before you use it.

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/com.scriptmasterlabs/x402-gateway/verify?hash=fc2fad16b432a5f3a0c6bf6e59366a48441cee543909514cd35c27bc0ae8e0bb" | jq -e '.changed == false'

Pinned hash fc2fad16b432, from Oct 24, 2026, 10:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.scriptmasterlabs/x402-gateway/changes.xml

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Source: MCP Registry. Synced Oct 24, 2026, 10:17 UTC.