{
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-05",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.3",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "tool": {
    "category": "",
    "endpoint": "https://mcp.polyxd.com/mcp",
    "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/polyxd-mcp.json",
    "kind": "mcp",
    "listed": "indexed",
    "liveUrl": "https://www.anchorterminal.com/api/v1/live/polyxd-mcp.json",
    "markdownUrl": "https://www.anchorterminal.com/tools/polyxd-mcp.md",
    "mcpTools": {
      "check": {
        "checker": "anchor-check/1.0",
        "totalTokens": 3908,
        "counts": {
          "error": 0,
          "note": 0,
          "warn": 3
        },
        "findings": [
          {
            "rule": "TC13",
            "severity": "warn",
            "tool": "polyxd_show",
            "message": "data (object with no properties), document (object with no properties)",
            "fix": "Declare the properties (or additionalProperties with a schema) and the array's items."
          },
          {
            "rule": "TC13",
            "severity": "warn",
            "tool": "polyxd_validate",
            "message": "data (object with no properties), document (object with no properties)",
            "fix": "Declare the properties (or additionalProperties with a schema) and the array's items."
          },
          {
            "rule": "TC13",
            "severity": "warn",
            "tool": "polyxd_verify",
            "message": "data (object with no properties), document (object with no properties), registry (object with no properties)",
            "fix": "Declare the properties (or additionalProperties with a schema) and the array's items."
          }
        ]
      },
      "checkedAt": "2026-10-04T22:23:35Z",
      "count": 6,
      "schemaTokens": 3908,
      "status": "ok",
      "tools": [
        {
          "name": "polyxd_guide",
          "title": "Polyxd guide",
          "description": "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.",
          "inputSchema": {
            "properties": {},
            "type": "object"
          },
          "outputSchema": {
            "additionalProperties": false,
            "properties": {
              "guide": {
                "description": "The instructions for writing a Polyxd UI document: how to use these tools, the document shape, the rules, bindings, actions, every component with its props, and the patterns. The same text as the result's text content.",
                "type": "string"
              },
              "specVersion": {
                "description": "The version of the Polyxd spec this server implements, e.g. \"0.3.0\". Documents set it as their \"specVersion\".",
                "type": "string"
              }
            },
            "required": [
              "specVersion",
              "guide"
            ],
            "type": "object"
          },
          "annotations": {
            "destructiveHint": false,
            "idempotentHint": true,
            "openWorldHint": false,
            "readOnlyHint": true,
            "title": "Polyxd guide"
          }
        },
        {
          "name": "polyxd_validate",
          "title": "Validate a Polyxd document",
          "description": "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.",
          "inputSchema": {
            "properties": {
              "data": {
                "additionalProperties": true,
                "description": "The values the screen shows, bound by {\"path\": \"/pointer\"}. Replaces the document's own \"data\" when given.",
                "type": "object"
              },
              "document": {
                "additionalProperties": true,
                "description": "A Polyxd UI document: {specVersion, surface, root, components, data?}. polyxd_guide explains the format.",
                "type": "object"
              }
            },
            "required": [
              "document"
            ],
            "type": "object"
          },
          "outputSchema": {
            "additionalProperties": false,
            "properties": {
              "errors": {
                "description": "How many errors. Fix every one before showing the document.",
                "minimum": 0,
                "type": "integer"
              },
              "issues": {
                "description": "Every error and warning, each at its JSON Pointer with a hint. Empty when the document is clean.",
                "items": {
                  "additionalProperties": false,
                  "description": "One problem in the document.",
                  "properties": {
                    "component": {
                      "additionalProperties": false,
                      "description": "The component the pointer is inside, when it is inside one.",
                      "properties": {
                        "id": {
                          "description": "The component's id.",
                          "type": "string"
                        },
                        "type": {
                          "description": "The component's type (its \"component\" value), e.g. \"TextInput\".",
                          "type": "string"
                        }
                      },
                      "type": "object"
                    },
                    "hint": {
                      "description": "What to change to fix it, when there is a known fix.",
                      "type": "string"
                    },
                    "message": {
                      "description": "What is wrong.",
                      "type": "string"
                    },
                    "pointer": {
                      "description": "JSON Pointer to the problem in the document, e.g. \"/components/2/label\".",
                      "type": "string"
                    },
                    "severity": {
                      "description": "\"error\" must be fixed before the document is shown; \"warning\" is advice.",
                      "enum": [
                        "error",
                        "warning"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "severity",
                    "pointer",
                    "message"
                  ],
                  "type": "object"
                },
                "type": "array"
              },
              "valid": {
                "description": "True when the document has no errors and can be shown. Warnings do not make it invalid.",
                "type": "boolean"
              },
              "warnings": {
                "description": "How many warnings. Advice; they do not stop the document being shown.",
                "minimum": 0,
                "type": "integer"
              }
            },
            "required": [
              "valid",
              "errors",
              "warnings",
              "issues"
            ],
            "type": "object"
          },
          "annotations": {
            "destructiveHint": false,
            "idempotentHint": true,
            "openWorldHint": false,
            "readOnlyHint": true,
            "title": "Validate a Polyxd document"
          }
        },
        {
          "name": "polyxd_verify",
          "title": "Verify a Polyxd document",
          "description": "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.",
          "inputSchema": {
            "properties": {
              "data": {
                "additionalProperties": true,
                "description": "The values the screen shows, bound by {\"path\": \"/pointer\"}. Replaces the document's own \"data\" when given.",
                "type": "object"
              },
              "direction": {
                "description": "A Design Direction to hold the document to: the direction object, or the name of an example direction.",
                "oneOf": [
                  {
                    "type": "string"
                  },
                  {
                    "additionalProperties": true,
                    "type": "object"
                  }
                ]
              },
              "document": {
                "additionalProperties": true,
                "description": "A Polyxd UI document: {specVersion, surface, root, components, data?}. polyxd_guide explains the format.",
                "type": "object"
              },
              "registry": {
                "additionalProperties": true,
                "description": "A capability registry ({capabilities: [...]}) to check the document's actions against. Leave out when there is none.",
                "type": "object"
              }
            },
            "required": [
              "document"
            ],
            "type": "object"
          },
          "outputSchema": {
            "additionalProperties": false,
            "properties": {
              "direction": {
                "description": "The name of the Design Direction the document was held to, when one was given and it has a name.",
                "type": "string"
              },
              "errors": {
                "description": "How many errors. Fix every one before showing the document.",
                "minimum": 0,
                "type": "integer"
              },
              "findings": {
                "description": "Every check that failed. Empty when the document passes with no warnings.",
                "items": {
                  "additionalProperties": false,
                  "properties": {
                    "check": {
                      "description": "The check that failed, e.g. \"spec\", \"data:missing-path\", \"pattern:\u003cid\u003e\", \"rule:\u003cid\u003e\", \"capability\" or \"load:inputs-per-view\".",
                      "type": "string"
                    },
                    "hint": {
                      "description": "What to change to fix it, when there is a known fix.",
                      "type": "string"
                    },
                    "message": {
                      "description": "What failed; findings from the spec validator start with the JSON Pointer, as \"\u003cpointer\u003e: \u003cmessage\u003e\".",
                      "type": "string"
                    },
                    "severity": {
                      "description": "\"error\" must be fixed before the document is shown; \"warning\" is advice.",
                      "enum": [
                        "error",
                        "warning"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "severity",
                    "check",
                    "message"
                  ],
                  "type": "object"
                },
                "type": "array"
              },
              "rules": {
                "description": "How many Design Direction rules were checked. 0 without a direction.",
                "minimum": 0,
                "type": "integer"
              },
              "warnings": {
                "description": "How many warnings. Advice; they do not stop the document being shown.",
                "minimum": 0,
                "type": "integer"
              }
            },
            "required": [
              "errors",
              "warnings",
              "findings",
              "rules"
            ],
            "type": "object"
          },
          "annotations": {
            "destructiveHint": false,
            "idempotentHint": true,
            "openWorldHint": false,
            "readOnlyHint": true,
            "title": "Verify a Polyxd document"
          }
        },
        {
          "name": "polyxd_show",
          "title": "Show a Polyxd screen",
          "description": "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.",
          "inputSchema": {
            "properties": {
              "data": {
                "additionalProperties": true,
                "description": "The values the screen shows, bound by {\"path\": \"/pointer\"}. Replaces the document's own \"data\" when given.",
                "type": "object"
              },
              "document": {
                "additionalProperties": true,
                "description": "A Polyxd UI document: {specVersion, surface, root, components, data?}. polyxd_guide explains the format.",
                "type": "object"
              },
              "mode": {
                "description": "Light or dark. Leave out to follow the host's theme.",
                "enum": [
                  "light",
                  "dark"
                ],
                "type": "string"
              },
              "pack": {
                "description": "The design-system pack to draw the screen in, by id: 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. Names like \"Carbon\" or \"shadcn/ui\" work too. Pass it whenever the user names a design system. Default material3.",
                "type": "string"
              }
            },
            "required": [
              "document"
            ],
            "type": "object"
          },
          "outputSchema": {
            "additionalProperties": false,
            "description": "shown is true with the document, pack and spec version when the screen was shown; false with the issues when it was not (that result is also an error).",
            "oneOf": [
              {
                "properties": {
                  "shown": {
                    "const": true
                  }
                },
                "required": [
                  "document",
                  "pack",
                  "packName",
                  "specVersion"
                ]
              },
              {
                "properties": {
                  "shown": {
                    "const": false
                  }
                },
                "required": [
                  "issues"
                ]
              }
            ],
            "properties": {
              "document": {
                "additionalProperties": true,
                "description": "The Polyxd UI document as shown, with the separately passed data merged in as its \"data\". The MCP App renders it.",
                "type": "object"
              },
              "issues": {
                "description": "When not shown: the document's errors and warnings, each at its JSON Pointer with a hint.",
                "items": {
                  "additionalProperties": false,
                  "description": "One problem in the document.",
                  "properties": {
                    "component": {
                      "additionalProperties": false,
                      "description": "The component the pointer is inside, when it is inside one.",
                      "properties": {
                        "id": {
                          "description": "The component's id.",
                          "type": "string"
                        },
                        "type": {
                          "description": "The component's type (its \"component\" value), e.g. \"TextInput\".",
                          "type": "string"
                        }
                      },
                      "type": "object"
                    },
                    "hint": {
                      "description": "What to change to fix it, when there is a known fix.",
                      "type": "string"
                    },
                    "message": {
                      "description": "What is wrong.",
                      "type": "string"
                    },
                    "pointer": {
                      "description": "JSON Pointer to the problem in the document, e.g. \"/components/2/label\".",
                      "type": "string"
                    },
                    "severity": {
                      "description": "\"error\" must be fixed before the document is shown; \"warning\" is advice.",
                      "enum": [
                        "error",
                        "warning"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "severity",
                    "pointer",
                    "message"
                  ],
                  "type": "object"
                },
                "type": "array"
              },
              "mode": {
                "description": "Light or dark, when one was asked for. Absent: the screen follows the host's theme.",
                "enum": [
                  "light",
                  "dark"
                ],
                "type": "string"
              },
              "pack": {
                "description": "The design-system pack the screen is drawn in.",
                "enum": [
                  "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"
                ],
                "type": "string"
              },
              "packName": {
                "description": "The pack's display name, e.g. \"Material 3\".",
                "type": "string"
              },
              "shown": {
                "description": "Whether the screen was shown to the user. False when the document has errors.",
                "type": "boolean"
              },
              "specVersion": {
                "description": "The version of the Polyxd spec this server implements, e.g. \"0.3.0\". Documents set it as their \"specVersion\".",
                "type": "string"
              }
            },
            "required": [
              "shown"
            ],
            "type": "object"
          },
          "annotations": {
            "destructiveHint": false,
            "idempotentHint": true,
            "openWorldHint": false,
            "readOnlyHint": true,
            "title": "Show a Polyxd screen"
          }
        },
        {
          "name": "polyxd_packs",
          "title": "List Polyxd packs",
          "description": "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.",
          "inputSchema": {
            "properties": {},
            "type": "object"
          },
          "outputSchema": {
            "additionalProperties": false,
            "properties": {
              "default": {
                "description": "The pack polyxd_show uses when none is given.",
                "enum": [
                  "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"
                ],
                "type": "string"
              },
              "packs": {
                "description": "Every pack, for polyxd_show's \"pack\" argument.",
                "items": {
                  "additionalProperties": false,
                  "properties": {
                    "description": {
                      "description": "A one-line description of the pack.",
                      "type": "string"
                    },
                    "displayName": {
                      "description": "The name to show people, e.g. \"IBM Carbon\".",
                      "type": "string"
                    },
                    "name": {
                      "description": "The pack's name: the value to pass as polyxd_show's \"pack\".",
                      "type": "string"
                    },
                    "package": {
                      "description": "The npm package with the pack's design tokens.",
                      "type": "string"
                    },
                    "template": {
                      "description": "True for an original template to start from; false for a published design system.",
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "name",
                    "displayName",
                    "template",
                    "package",
                    "description"
                  ],
                  "type": "object"
                },
                "type": "array"
              }
            },
            "required": [
              "default",
              "packs"
            ],
            "type": "object"
          },
          "annotations": {
            "destructiveHint": false,
            "idempotentHint": true,
            "openWorldHint": false,
            "readOnlyHint": true,
            "title": "List Polyxd packs"
          }
        },
        {
          "name": "polyxd_components",
          "title": "List Polyxd components",
          "description": "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.",
          "inputSchema": {
            "properties": {
              "name": {
                "description": "A component name, e.g. \"Choice\", for its full definition.",
                "type": "string"
              }
            },
            "type": "object"
          },
          "outputSchema": {
            "additionalProperties": false,
            "description": "\"component\" when a name was given; \"components\" otherwise.",
            "oneOf": [
              {
                "required": [
                  "component"
                ]
              },
              {
                "required": [
                  "components"
                ]
              }
            ],
            "properties": {
              "component": {
                "additionalProperties": true,
                "description": "One component's full definition.",
                "properties": {
                  "accessibility": {
                    "additionalProperties": true,
                    "description": "Its accessible role and requirements.",
                    "type": "object"
                  },
                  "agent": {
                    "description": "How an agent operating the rendered screen should use it.",
                    "type": "string"
                  },
                  "category": {
                    "description": "The component's kind: action, shell, structure, content, input, flow, layout, feedback.",
                    "type": "string"
                  },
                  "name": {
                    "description": "The component's type name, the value of \"component\" in a document, e.g. \"Choice\".",
                    "type": "string"
                  },
                  "props": {
                    "additionalProperties": true,
                    "description": "Every prop, by name, as a JSON Schema. $refs point into the spec's common definitions (DynamicString, Binding, Options and so on).",
                    "type": "object"
                  },
                  "rendering": {
                    "description": "How renderers draw it.",
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "required": {
                    "description": "The props a document must set.",
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "shell": {
                    "description": "True for shell components, which frame a product's screens: authored once per product, never generated.",
                    "type": "boolean"
                  },
                  "summary": {
                    "description": "What the component is for, in one line.",
                    "type": "string"
                  },
                  "whenNotToUse": {
                    "description": "When not to, and what to use instead.",
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "whenToUse": {
                    "description": "When to use this component.",
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  }
                },
                "required": [
                  "name",
                  "category",
                  "summary",
                  "props",
                  "required",
                  "whenToUse",
                  "whenNotToUse"
                ],
                "type": "object"
              },
              "components": {
                "description": "Every component, in the spec's order.",
                "items": {
                  "additionalProperties": false,
                  "properties": {
                    "category": {
                      "description": "The component's kind: action, shell, structure, content, input, flow, layout, feedback.",
                      "type": "string"
                    },
                    "name": {
                      "description": "The component's type name. Pass it back as \"name\" for the full definition.",
                      "type": "string"
                    },
                    "shell": {
                      "description": "True for shell components: authored once per product, never generated. Use the others in generated screens.",
                      "type": "boolean"
                    },
                    "summary": {
                      "description": "What the component is for, in one line.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "name",
                    "category",
                    "summary",
                    "shell"
                  ],
                  "type": "object"
                },
                "type": "array"
              }
            },
            "type": "object"
          },
          "annotations": {
            "destructiveHint": false,
            "idempotentHint": true,
            "openWorldHint": false,
            "readOnlyHint": true,
            "title": "List Polyxd components"
          }
        }
      ]
    },
    "name": "Polyxd",
    "note": "Indexed from the official MCP registry: facts and our own checks, not reviewed, so no score, grade or rank.",
    "packages": [
      {
        "registryType": "npm",
        "identifier": "@polyxd/mcp",
        "version": "0.4.1",
        "transport": "stdio"
      }
    ],
    "pageJsonUrl": "https://www.anchorterminal.com/tools/polyxd-mcp.json",
    "popularity": {
      "githubStars": 0,
      "npmWeekly": 313
    },
    "registryName": "com.polyxd/mcp",
    "remotes": [
      {
        "type": "streamable-http",
        "url": "https://mcp.polyxd.com/mcp"
      }
    ],
    "repository": "https://github.com/visualfart/polyxd",
    "reviewed": false,
    "slug": "polyxd-mcp",
    "source": "the official MCP registry",
    "sourceUrl": "https://registry.modelcontextprotocol.io/v0.1/servers?search=com.polyxd/mcp",
    "summary": "Write Polyxd UI documents, check them, and show them as real screens in any design-system pack.",
    "updatedAt": "2026-09-28T21:20:12Z",
    "url": "https://www.anchorterminal.com/tools/polyxd-mcp",
    "vendor": "polyxd.com",
    "vendorUrl": "https://polyxd.com/docs/mcp/",
    "version": "0.4.1",
    "websiteUrl": "https://polyxd.com/docs/mcp/",
    "where": "both",
    "why": [
      "vendor"
    ]
  }
}