# Polyxd

> Polyxd, an MCP server by polyxd.com, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Write Polyxd UI documents, check them, and show them as real screens in any design-system pack.

- Canonical: https://www.anchorterminal.com/tools/polyxd-mcp
- Markdown: https://www.anchorterminal.com/tools/polyxd-mcp.md (~900 tokens)
- Slim: https://www.anchorterminal.com/tools/polyxd-mcp.min.md (~830 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/tools/polyxd-mcp.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-05

# Polyxd

> Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: MCP server, by polyxd.com (https://polyxd.com/docs/mcp/)
- Listed because: It's published in the registry under polyxd.com, a namespace the registry only gives to whoever proves they control that domain.
- What the official MCP registry says: Write Polyxd UI documents, check them, and show them as real screens in any design-system pack.

## Facts

- MCP registry: `com.polyxd/mcp` 0.4.1
- Endpoint: https://mcp.polyxd.com/mcp (streamable HTTP)
- Package: npm `@polyxd/mcp` (stdio)
- Source: https://github.com/visualfart/polyxd
- Website: https://polyxd.com/docs/mcp/
- npm downloads a week: 313
- GitHub stars: 0
- Registry entry updated: 2026-09-28

## Tools

- Tools it lists (6, about 3,908 tokens of context, `tools/list` without credentials over MCP 2026-07-28, checked 2026-10-04 22:23 UTC):
  - `polyxd_guide` (read-only): Returns the instructions for writing a Polyxd UI document: the document shape, the rules for generated screens, bindings, actions, every component with its…
  - `polyxd_validate` (read-only): 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…
  - `polyxd_verify` (read-only): 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…
  - `polyxd_show` (read-only): 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…
  - `polyxd_packs` (read-only): 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…
  - `polyxd_components` (read-only): 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…
- How its tools read to an agent (0 errors, 3 warnings, 0 notes, about 3,908 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):
  - warn TC13 polyxd_show: data (object with no properties), document (object with no properties)
  - warn TC13 polyxd_validate: data (object with no properties), document (object with no properties)
  - warn TC13 polyxd_verify: data (object with no properties), document (object with no properties), registry (object with no properties)

- JSON: https://www.anchorterminal.com/api/v1/tools/polyxd-mcp.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming