Machine Schema

com.machineschema/mcpmachineschema.comstreamable-httpv0.2.0Scanned 2 hours ago

Cited specs for industrial robots, CNC machines, PLCs, drives, protocols and alarm codes.

10 tools: 3 change things and 7 only read.

Reads private data · 1
Reads text others write · 0
Can send data out · 0
2 findings

Anlyon alternative

3 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

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.

10 tools

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

calculate_metricEvaluate a formula entry, such as OEE, with your inputs.1 finding
Why it is in this group
- The description's first verb is "evaluate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "calculate_metric" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "evaluate": a word for a change.
  What this check looks for
Description, as the server wrote it
Evaluate a formula entry, such as OEE, with your inputs. Get the variable symbols from get_entry first.
Annotations the server declares
- title: Calculate a metric
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
check_limitsCheck planned payload, reach, TCP speed, repeatability, ambient temperature or IP rating against a robot's published limits.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check planned payload, reach, TCP speed, repeatability, ambient temperature or IP rating against a robot's published limits. Returns pass/fail/unknown per check with the limit and its sources. Call this before generating code that moves real hardware.
Annotations the server declares
- title: Check a plan against hardware limits
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
lookup_alarmFind what a controller alarm or error code means and what to check.1 finding
Why it is in this group
- The name "lookup_alarm" says "lookup": a word for reading.
- The input takes a statement or command to run (input.code), which can change anything it can reach.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "lookup_alarm" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "lookup_alarm" says "lookup": a word for reading.
  What this check looks for
Description, as the server wrote it
Find what a controller alarm or error code means and what to check. Accepts a full code (SRVO-062) or a prefix, optionally limited to one controller id.
Annotations the server declares
- title: Look up an alarm code
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Only reads 7Looks things up and changes nothing.Show 7 read-only tools

compareAlign 2 to 5 entries of the same type into one table of numeric spec values with units, plus each entry's verification status and sources.Reads private dataNo findings
Why it is in this group
- The name "compare" says "compare": a word for reading.
What it can reach
- private-dataThe description's first sentence says "table": it reads databases.
Description, as the server wrote it
Align 2 to 5 entries of the same type into one table of numeric spec values with units, plus each entry's verification status and sources.
Annotations the server declares
- title: Compare entries
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
find_hardwareFind hardware matching numeric limits, manufacturer, controller and supported protocols, e.g.No findings
Why it is in this group
- The name "find_hardware" says "find": a word for reading.
Description, as the server wrote it
Find hardware matching numeric limits, manufacturer, controller and supported protocols, e.g. cobots with payload >= 10 kg that speak PROFINET.
Annotations the server declares
- title: Filter hardware by spec
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_entryReturn the full structured record for one id: typed spec values, sources and verification status.No findings
Why it is in this group
- The name "get_entry" says "get": a word for reading.
Description, as the server wrote it
Return the full structured record for one id: typed spec values, sources and verification status.
Annotations the server declares
- title: Get an entry
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_relatedList entries connected to an id, in both directions: a robot's manufacturer, controllers and protocols, a controller's robots and alarm codes, or a base model's variants.No findings
Why it is in this group
- The name "get_related" says "get": a word for reading.
Description, as the server wrote it
List entries connected to an id, in both directions: a robot's manufacturer, controllers and protocols, a controller's robots and alarm codes, or a base model's variants.
Annotations the server declares
- title: Traverse the graph
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_schemaReturn the JSON Schema every entry of a type conforms to.No findings
Why it is in this group
- The name "get_schema" says "get": a word for reading.
Description, as the server wrote it
Return the JSON Schema every entry of a type conforms to. Use it to validate generated configs or to build a submission.
Annotations the server declares
- title: Get a type's JSON Schema
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
list_facetsValid values, with counts, for find_hardware filters: categories, manufacturers, controllers and protocols.No findings
Why it is in this group
- The name "list_facets" says "list": a word for reading.
Description, as the server wrote it
Valid values, with counts, for find_hardware filters: categories, manufacturers, controllers and protocols.
Annotations the server declares
- title: List filter values
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
search_entriesFull-text search across hardware, controllers, protocols, standards, alarm codes, terms and manufacturers.No findings
Why it is in this group
- The name "search_entries" says "search": a word for reading.
Description, as the server wrote it
Full-text search across hardware, controllers, protocols, standards, alarm codes, terms and manufacturers. Returns ids to pass to get_entry.
Annotations the server declares
- title: Search the registry
- 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 untrusted-input or outbound.

Reads private data1: Reads files, mail, messages, databases, secrets, calendars or repositories.; compare
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.

Findings

Matches of fixed checks, with the text they matched.

2 warn

Warnlookup_alarm
The server marks "lookup_alarm" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "lookup_alarm" says "lookup": a word for reading.
What this check looks for
Warncalculate_metric
The server marks "calculate_metric" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "evaluate": a word for a change.
What this check looks for

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 0.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http machineschema https://machineschema.com/mcp

claude mcp add --transport http machineschema https://machineschema.com/mcp

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__machineschema__search_entries",
      "mcp__machineschema__get_entry",
      "mcp__machineschema__find_hardware",
      "mcp__machineschema__list_facets",
      "mcp__machineschema__compare",
      "mcp__machineschema__get_related",
      "mcp__machineschema__get_schema"
    ],
    "ask": [
      "mcp__machineschema__check_limits",
      "mcp__machineschema__lookup_alarm",
      "mcp__machineschema__calculate_metric"
    ],
    "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 machineschema. Review it before you use it.

Capability tags behind 1 rule

mcp__machineschema__compare private-data

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.machineschema/mcp/verify?hash=d20000b17a8733d43279a77e81b21d6f426e1e57fd0dc2318a2a1d605685efd3" | jq -e '.changed == false'

Pinned hash d20000b17a87, from Nov 1, 2026, 19:18 UTC.

Watch

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

https://anlyon.dev/servers/com.machineschema/mcp/changes.xml

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Badge

[![anlyon.dev](https://anlyon.dev/badge/com.machineschema/mcp.svg)](https://anlyon.dev/servers/com.machineschema/mcp)

Source: MCP Registry. Synced Nov 1, 2026, 19:17 UTC.