← Index

OPC-UA MCP Server

io.github.mwieczorkiewicz/opcua-mcpv1.0.0Search

Read, write, browse, search, and subscribe to live data on an OPC-UA industrial automation server.

In-path gate · all MCP tools

Using OPC-UA MCP Server in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire
Auditable install path →Watch it hold a drift →
Trust verdict · v1 advisory · method
NOT YET SCREENEDno verdict on file

Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-05).

Contracts can change after screening, with no version bump. The gate pins OPC-UA MCP Server’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Related: how to trust an MCP server · screen before install · silent contract drift

Environment variables
OPCUA_ENDPOINT
required

OPC-UA server endpoint to connect to, e.g. opc.tcp://your-plc-host:4840

OPCUA_AUTH_MODE

Authentication mode against the OPC-UA server

OPCUA_USERNAME

Username, required if OPCUA_AUTH_MODE=username

OPCUA_PASSWORD
secret

Password, required if OPCUA_AUTH_MODE=username

OPCUA_SECURITY_POLICY

OPC-UA transport security policy, e.g. Basic256Sha256

OPCUA_SECURITY_MODE

OPC-UA transport security mode, e.g. SignAndEncrypt

SERVER_TRANSPORT

MCP transport: stdio (for local MCP clients) or http (for remote/hosted deployments)

MCP quality score · maturity, not trust · methodology
freshness
25
completeness
20
installability
25
documentation
15
stability
10
Alternatives in Search
YTDL RMCP
ai.dinglebear/rytdl

yt-dlp search, download, metadata, delivery, and Plex workflows over MCP and CLI.

YTDL RMCP
ai.dinglebear/ytdl-rmcp

Rust MCP server and CLI for yt-dlp search, downloads, metadata, transfers, and Plex playlists.

io.github.n0isy/mcp-icon-visual
io.github.n0isy/mcp-icon-visual

Search, retrieve, compare, and render SVG icons visually for AI agents.