OPC UA NodeSet Gate MCP Server

by changhuliu Your server? Claim it

answering

OPC UA NodeSet Gate is answering right now. Last checked 10 min ago. It exposes 5 tools.

Deterministic release-compatibility preflight for OPC UA NodeSet2 XML.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 19 days of history · worst day 72%

19 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

213 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 6

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 29 September 2026. No other catalogue keeps this.

15 Oct a tool description was rewritten nodeset_compatibility_status

29 Sep 5 tool descriptions were rewritten append_nodeset_chunk, audit_nodeset_compatibility, audit_uploaded_nodesets and 2 more

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add opc-ua-nodeset-compatibility-gate --transport http https://nodeset.regevidencehub.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "opc-ua-nodeset-compatibility-gate": {
      "url": "https://nodeset.regevidencehub.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.opc-ua-nodeset-compatibility-gate]
url = "https://nodeset.regevidencehub.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "opc-ua-nodeset-compatibility-gate": {
      "url": "https://nodeset.regevidencehub.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "opc-ua-nodeset-compatibility-gate": {
      "url": "https://nodeset.regevidencehub.com/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

audit

audit_nodeset_compatibility

Compare two complete OPC UA NodeSet2 XML documents when both fit in a single request. Pass old_nodeset_xml as the full baseline revision and new_nodeset_xml as the full candidate revision. The deterministic report returns result (COMPATIBLE, REVIEW_REQUIRED, BREAKING, or INSUFFICIENT_INPUT), old_node_count, new_node_count, issue_count, a summary keyed by change code, and issues containing code, severity, node_id and detail. Examples include NODE_ADDED, NODE_REMOVED, DATA_TYPE_CHANGED and reference changes. For large XML documents use begin_nodeset_upload + append_nodeset_chunk for each revision, then audit_uploaded_nodesets instead.

audit_uploaded_nodesets

Compare two large NodeSet2 XML revisions after both have been fully staged with begin_nodeset_upload and append_nodeset_chunk. Pass old_upload_id for the baseline revision and new_upload_id for the candidate revision. This call consumes both upload IDs, so do not reuse them afterward. The report has the same shape as audit_nodeset_compatibility: result (COMPATIBLE, REVIEW_REQUIRED, BREAKING, or INSUFFICIENT_INPUT), old/new node counts, issue_count, summary by change code, and issues with code, severity, node_id and detail. Use the direct audit tool instead when both complete XML documents fit in a single request.

append

append_nodeset_chunk

Append the next unmodified text chunk to a temporary NodeSet2 upload created by begin_nodeset_upload. Pass upload_id exactly as returned by begin_nodeset_upload and chunk as the next consecutive XML text segment; send every chunk in original order without overlap, omission or reformatting. On success the result returns status=OK, upload_id and cumulative received_chars; UNKNOWN_UPLOAD_ID or UPLOAD_TOO_LARGE indicates the upload cannot continue. This tool only stages XML in temporary memory and does not parse or compare it yet.

begin

begin_nodeset_upload

Start one temporary in-memory upload for a large NodeSet2 XML document. Call this once for the old baseline and once for the new candidate when the complete XML documents are too large for audit_nodeset_compatibility. It returns upload_id and max_total_chars. Append that document's chunks in original order with append_nodeset_chunk. Uploads expire after 15 minutes and the service allows at most four active uploads; this tool stores only temporary process memory and does not modify an external system.

nodeset

nodeset_compatibility_status

Return bounded service metadata for OPC UA NodeSet Compatibility Gate. Use this only to discover deployment stage, deterministic static-analysis scope, production availability and payment status; do not use it to compare NodeSets. The result includes the shared MCP endpoint and explicitly lists which tool calls are free and which require x402 payment.

Endpoints

URL	Transport	State	Latency	Checked
https://nodeset.regevidencehub.com/mcp	streamable-http	answering	190 ms	10 min ago

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OPC UA NodeSet Gate — questions

Answers built from our own checks of this server.

What can OPC UA NodeSet Gate do?

It exposes 5 tools, read directly from the server on our last check. Among them: append_nodeset_chunk, audit_nodeset_compatibility, audit_uploaded_nodesets, begin_nodeset_upload, nodeset_compatibility_status. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is OPC UA NodeSet Gate working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 213 ms. The bar chart above shows every period we have measured.

Is OPC UA NodeSet Gate still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect OPC UA NodeSet Gate?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does OPC UA NodeSet Gate need an API key?

No. OPC UA NodeSet Gate completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is OPC UA NodeSet Gate?

It answers our handshake in 213 ms on average, which is faster than 59% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.