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Polyxd

by polyxd.com · remote · local (npm) · no sign-in to list tools · v0.4.6 · published by com.polyxd

Write Polyxd UI documents, check them, and show them as real screens in any design-system pack.

Changes · 1
CompareRegistry entry

7 tools: 1 change things and 6 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

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

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnpolyxd_verify

    The server marks "polyxd_verify" 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 "run": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

7 tools

Changes things 1Claude Code: ask
  • polyxd_verifyRuns the Polyxd verifier's document checks: the spec validator, the pattern the surface declares, readable and distinct labels, one primary action per view, at most six inputs per …1 finding

    Why it is in this group

    • The description's first verb is "run": 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 "polyxd_verify" 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 "run": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Runs the Polyxd verifier's document checks: the spec validator, the pattern the surface declares, readable and distinct labels, one primary action per view, at most six inputs per view, entity-first flows, confirmations, and, when you pass one, a Design Direction's rules and voice. Returns a compact report. Example directions by name: calm-finance, playful-personal.

    Annotations the server declares

    • title: Verify a Polyxd document
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 6Claude Code: allow
  • polyxd_componentsLists the semantic components a Polyxd document can use, with a one-line summary each.No findings

    Why it is in this group

    • The description's first verb is "list": a word for reading.
    Description, as the server wrote it
    Lists the semantic components a Polyxd document can use, with a one-line summary each. Pass "name" for one component's full definition: every prop and its type, which are required, when to use it and when not to, and how it renders.

    Annotations the server declares

    • title: List Polyxd components
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • polyxd_docsSearches the polyxd.com docs, as of this server's version: installing and using the React and Web Components renderers, the spec, the verifier and its CLI, the runtime, the generat…No findings

    Why it is in this group

    • The description's first verb is "search": a word for reading.
    Description, as the server wrote it
    Searches the polyxd.com docs, as of this server's version: installing and using the React and Web Components renderers, the spec, the verifier and its CLI, the runtime, the generation server, design systems and packs, Design Directions, analytics events, Studio, the MCP server and the roadmap. Pass "query" for the sections that best match, "page" for one whole page, or nothing for the list of pages. Cite the URLs it returns. For writing a document, use polyxd_guide.

    Annotations the server declares

    • title: Search the Polyxd docs
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • polyxd_guideReturns the instructions for writing a Polyxd UI document: the document shape, the rules for generated screens, bindings, actions, every component with its props, and the patterns.No findings

    Why it is in this group

    • The description's first verb is "return": a word for reading.
    Description, as the server wrote it
    Returns the instructions for writing a Polyxd UI document: the document shape, the rules for generated screens, bindings, actions, every component with its props, and the patterns. Call this once before writing your first document.

    Annotations the server declares

    • title: Polyxd guide
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • polyxd_packsLists the design-system packs polyxd_show can draw a screen in: published design systems (Material 3, Carbon, GOV.UK and others) and original templates.No findings

    Why it is in this group

    • The description's first verb is "list": a word for reading.
    Description, as the server wrote it
    Lists the design-system packs polyxd_show can draw a screen in: published design systems (Material 3, Carbon, GOV.UK and others) and original templates. The same document looks native in each.

    Annotations the server declares

    • title: List Polyxd packs
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • polyxd_showValidates a Polyxd UI document and shows it to the user as an interactive screen, drawn by the Polyxd renderer in the design-system pack you choose (default material3).No findings

    Why it is in this group

    • The name "polyxd_show" says "show": a word for reading.
    Description, as the server wrote it
    Validates a Polyxd UI document and shows it to the user as an interactive screen, drawn by the Polyxd renderer in the design-system pack you choose (default material3). Shows nothing if the document has errors; fix them first with polyxd_validate. When the user presses an action in the screen, you receive a chat message from the user naming the action and its context; that only tells you their choice, and nothing has been submitted or paid. Packs: material3, antd, bootstrap, carbon, chakra, fluent, govuk, mantine, polaris, primer, radix, shadcn, spectrum, brutalist, civic, editorial, finance, glass, health, mono, neon, pastel, sketch, terminal, wireframe.

    Annotations the server declares

    • title: Show a Polyxd screen
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • polyxd_validateChecks a Polyxd UI document against the spec: the schema, ids and references, bindings against the data, actions, and the rules for generated screens.No findings

    Why it is in this group

    • The name "polyxd_validate" says "validate": a word for reading.
    Description, as the server wrote it
    Checks a Polyxd UI document against the spec: the schema, ids and references, bindings against the data, actions, and the rules for generated screens. Returns every issue with its JSON Pointer, the component it is in, and a hint saying what to change. Call it after writing or changing a document, and fix every error before showing it.

    Annotations the server declares

    • title: Validate a Polyxd document
    • 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.

Install

Pinned to version 0.4.6. Values in angle brackets are yours to fill in.

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

Run in a terminal.

Claude Code permissions

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

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__polyxd__polyxd_guide",
      "mcp__polyxd__polyxd_validate",
      "mcp__polyxd__polyxd_show",
      "mcp__polyxd__polyxd_packs",
      "mcp__polyxd__polyxd_components",
      "mcp__polyxd__polyxd_docs"
    ],
    "ask": [
      "mcp__polyxd__polyxd_verify"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as polyxd. Review it before you use it.