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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "sparkplug-b": {
      "command": "uvx",
      "args": [
        "sparkplug-b-mcp-server==0.1.0"
      ],
      "env": {
        "SPARKPLUG_MQTT_HOST": "${SPARKPLUG_MQTT_HOST}",
        "SPARKPLUG_HOST_ID": "${SPARKPLUG_HOST_ID}",
        "SPARKPLUG_MQTT_PASSWORD": "${SPARKPLUG_MQTT_PASSWORD}"
      }
    }
  }
}

claude mcp add sparkplug-b -e "SPARKPLUG_MQTT_HOST=${SPARKPLUG_MQTT_HOST}" -e "SPARKPLUG_HOST_ID=${SPARKPLUG_HOST_ID}" -e "SPARKPLUG_MQTT_PASSWORD=${SPARKPLUG_MQTT_PASSWORD}" -- uvx sparkplug-b-mcp-server==0.1.0

[mcp_servers.sparkplug-b]
command = "uvx"
args = ["sparkplug-b-mcp-server==0.1.0"]
env = { "SPARKPLUG_MQTT_HOST" = "${SPARKPLUG_MQTT_HOST}", "SPARKPLUG_HOST_ID" = "${SPARKPLUG_HOST_ID}", "SPARKPLUG_MQTT_PASSWORD" = "${SPARKPLUG_MQTT_PASSWORD}" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sparkplug-b": {
      "type": "local",
      "command": [
        "uvx",
        "sparkplug-b-mcp-server==0.1.0"
      ],
      "enabled": true,
      "environment": {
        "SPARKPLUG_MQTT_HOST": "{env:SPARKPLUG_MQTT_HOST}",
        "SPARKPLUG_HOST_ID": "{env:SPARKPLUG_HOST_ID}",
        "SPARKPLUG_MQTT_PASSWORD": "{env:SPARKPLUG_MQTT_PASSWORD}"
      }
    }
  }
}

{
  "mcpServers": {
    "sparkplug-b": {
      "command": "uvx",
      "args": [
        "sparkplug-b-mcp-server==0.1.0"
      ],
      "env": {
        "SPARKPLUG_MQTT_HOST": "${SPARKPLUG_MQTT_HOST}",
        "SPARKPLUG_HOST_ID": "${SPARKPLUG_HOST_ID}",
        "SPARKPLUG_MQTT_PASSWORD": "${SPARKPLUG_MQTT_PASSWORD}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=sparkplug-b&config=eyJjb21tYW5kIjoidXZ4IiwiYXJncyI6WyJzcGFya3BsdWctYi1tY3Atc2VydmVyPT0wLjEuMCJdLCJlbnYiOnsiU1BBUktQTFVHX01RVFRfSE9TVCI6IiR7U1BBUktQTFVHX01RVFRfSE9TVH0iLCJTUEFSS1BMVUdfSE9TVF9JRCI6IiR7U1BBUktQTFVHX0hPU1RfSUR9IiwiU1BBUktQTFVHX01RVFRfUEFTU1dPUkQiOiIke1NQQVJLUExVR19NUVRUX1BBU1NXT1JEfSJ9fQ%3D%3D"
}

{
  "servers": {
    "sparkplug-b": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "sparkplug-b-mcp-server==0.1.0"
      ],
      "env": {
        "SPARKPLUG_MQTT_HOST": "${SPARKPLUG_MQTT_HOST}",
        "SPARKPLUG_HOST_ID": "${SPARKPLUG_HOST_ID}",
        "SPARKPLUG_MQTT_PASSWORD": "${SPARKPLUG_MQTT_PASSWORD}"
      }
    }
  }
}

{
  "mcpServers": {
    "sparkplug-b": {
      "command": "uvx",
      "args": [
        "sparkplug-b-mcp-server==0.1.0"
      ],
      "env": {
        "SPARKPLUG_MQTT_HOST": "${SPARKPLUG_MQTT_HOST}",
        "SPARKPLUG_HOST_ID": "${SPARKPLUG_HOST_ID}",
        "SPARKPLUG_MQTT_PASSWORD": "${SPARKPLUG_MQTT_PASSWORD}"
      }
    }
  }
}

extensions:
  "sparkplug-b":
    enabled: true
    name: "sparkplug-b"
    type: stdio
    cmd: "uvx"
    args:
      - "sparkplug-b-mcp-server==0.1.0"
    envs:
      "SPARKPLUG_MQTT_HOST": "${SPARKPLUG_MQTT_HOST}"
      "SPARKPLUG_HOST_ID": "${SPARKPLUG_HOST_ID}"
      "SPARKPLUG_MQTT_PASSWORD": "${SPARKPLUG_MQTT_PASSWORD}"
    timeout: 300

Placeholders to fill from your own secret store: ${SPARKPLUG_MQTT_PASSWORD}. The registry never accepts secret values.

This is a local package: the command runs on your machine.

Quality – / 100not scored

Not scored: fewer than three checks apply, usually because no remote answered a credential-free probe or the server is a local package.

protocoln/a · weight 25

n/a
protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygienen/a · weight 30

n/a
tools.descriptions, tools.description_length, tools.schemas, tools.annotations, tools.directory_hints, tools.token_cost, tools.api_dumptool list unknown (behind auth, not probed, or empty)

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool list unknown

dependencies100 · weight 15

pass
deps.known_vulnsno known advisory in 72 resolved packages
pass
deps.mcp_sdk_versionmcp 2.2.0, no known advisory
pass
deps.resolvable[email protected] resolved: 72 packages

Tool list unknown · checked 2026-10-19 21:10 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 81 / 100

duplicate-repo

provenance80

livenessn/a

freshness85

hygiene80

+repository +namespace-matches-repo ~liveness-unmeasured ~updated-76d-ago -duplicate-repo(5 names)

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

[email protected] PyPI71 dependencies, resolved · MCP SDK mcp 2.2.0 · advisories checked 2026-10-19

No known advisory affects this dependency graph.

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

package	registry	version	runtime	secrets
`sparkplug-b-mcp-server`	pypi	0.1.0	uvx	`SPARKPLUG_MQTT_PASSWORD`

Tools (0)

No tools observed. Local packages are never executed by the registry.

Schemas: list_tools.

Also listed as

4 other active names share this repository: io.github.nagarjunr/aws-iot-core, io.github.nagarjunr/azure-iot-hub, io.github.nagarjunr/eclipse-ditto, io.github.nagarjunr/mqtt

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Official server.json

{
  "name": "io.github.nagarjunr/sparkplug-b",
  "title": "Sparkplug B",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.1.0",
  "packages": [
    {
      "version": "0.1.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "sparkplug-b-mcp-server",
      "runtimeHint": "uvx",
      "registryType": "pypi",
      "registryBaseUrl": "https://pypi.org",
      "environmentVariables": [
        {
          "name": "SPARKPLUG_MQTT_HOST",
          "isRequired": true,
          "description": "MQTT broker hostname or IP."
        },
        {
          "name": "SPARKPLUG_HOST_ID",
          "isRequired": true,
          "description": "This connector's Sparkplug Host Application ID (used in the spBv1.0/STATE/{id} topic)."
        },
        {
          "name": "SPARKPLUG_MQTT_PORT",
          "description": "MQTT broker port, default 1883"
        },
        {
          "name": "SPARKPLUG_MQTT_USERNAME",
          "description": "Broker username, if required"
        },
        {
          "name": "SPARKPLUG_MQTT_PASSWORD",
          "isSecret": true,
          "description": "Broker password, if required"
        },
        {
          "name": "SPARKPLUG_MQTT_USE_TLS",
          "description": "true/false, default false"
        },
        {
          "name": "SPARKPLUG_GROUP_ID",
          "description": "Restrict discovery/watching to a single Sparkplug Group ID; omit to subscribe to every group"
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/nagarjunr/iot-mcp-servers",
    "source": "github",
    "subfolder": "sparkplug-b"
  },
  "description": "MCP server for Sparkplug B: node/device discovery, metrics, commands, host state over MQTT."
}