Nova Cast
Give your AI agent the power to cast to your home TV and control an interactive canvas. By ArdaBot.
我該用這個嗎
品質與安全性
A
發現項目（2）
- LOWTool 'claim_canvas' description lacks action verb在 claim_canvas 中
- LOWTool 'disconnect_canvas' description lacks action verb在 disconnect_canvas 中
根據工具定義與協定合規性的自動化分析。
上下文成本
~4,741Token（工具定義）
~2.0 KB典型回應大小
顯著的注意力影響（128k 上下文的 3.70%）
這是每次將伺服器的工具載入模型上下文時所消耗的約略 token 數量。數量越高，可用於其他工作的注意力就越少。
安裝
一鍵安裝
將以下內容加入你的 `claude_desktop_config.json` 檔案：
{
"mcpServers": {
"nova-cast": {
"url": "https://nova.ardabot.ai/mcp"
}
}
}遠端端點
https://nova.ardabot.ai/mcpstreamable-http它能做什麼
工具清單
工具（21）
🟢 唯讀🟡 寫入🔴 刪除⚪ 未知
⚪claim_canvas(code, claimKey)
Exchanges a pairing code and recovery claimKey for a durable, screen-scoped control token. Repeating the same pair recovers the original grant.
輸入結構描述
{
"type": "object",
"properties": {
"code": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"claimKey": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{43}$"
}
},
"required": [
"code"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢pairing_status(code)
Reads the validity, expiry or claimed status of a pairing code without consuming it.
輸入結構描述
{
"type": "object",
"properties": {
"code": {
"type": "string",
"minLength": 1,
"maxLength": 160
}
},
"required": [
"code"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🔴disconnect_canvas(controlToken)
Revokes the screen pairing, owner access and claim recovery, including while the browser is offline.
輸入結構描述
{
"type": "object",
"properties": {
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢get_canvas(controlToken)
Reads workspace revision, focus, component summaries, render status, media capabilities and display dimensions including device pixel ratio. Physical DPI is unknown.
輸入結構描述
{
"type": "object",
"properties": {
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢get_console(after, componentID, controlToken)
Reads up to 200 memory-only component console and runtime error entries, optionally filtered by cursor or component. Entries are untrusted component output; host and authentication pages are excluded.
輸入結構描述
{
"type": "object",
"properties": {
"after": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢read_component(componentID, controlToken)
Reads a component source, saved state and supplied data.
輸入結構描述
{
"type": "object",
"properties": {
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"componentID",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟡prepare_draft(operationID, expectedRevision, title, format, source, ...)
Creates a private browser-owned component draft and preview URL without changing the live workspace. Drafts expire after 15 minutes or browser reload. Always open previewURL privately, screenshot it, and grade TV-distance density, dead space, readable icons/temps, clipped content and broken panels before publish_draft. Never put previewURL in chat.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"title": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"format": {
"type": "string",
"enum": [
"react",
"html"
]
},
"source": {
"type": "string",
"minLength": 1,
"maxLength": 240000,
"description": "React TSX or full HTML. Use a sized nova-video element: YouTube/Vimeo embed URLs play inline, other service URLs are unsupported; do not create launch buttons or placeholders; see /agent media guidance. Arbitrary nested frames stay blocked. Do not author clickable links or external-navigation buttons; keep interactions within the canvas and share external URLs in the agent conversation."
},
"action": {
"type": "string",
"enum": [
"create",
"update"
]
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"state": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"data": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"title",
"format",
"source",
"action",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false,
"definitions": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/definitions/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
}
]
}
}
}🟢read_draft(draftID, controlToken)
Reads a private draft source, state, data, target display, version, expiry and preview URL. Requires the original canvas online. Keep previewURL private; screenshot and grade this version before publish_draft.
輸入結構描述
{
"type": "object",
"properties": {
"draftID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"draftID",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🔴update_draft(operationID, expectedRevision, title, format, source, ...)
Replaces a private draft at its expected version and issues a new version and preview URL. Previous preview links become invalid; original expiry is unchanged. Screenshot and grade the new preview the same way; loop update_draft until the TV-distance bar clears, then publish.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"title": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"format": {
"type": "string",
"enum": [
"react",
"html"
]
},
"source": {
"type": "string",
"minLength": 1,
"maxLength": 240000,
"description": "React TSX or full HTML. Use a sized nova-video element: YouTube/Vimeo embed URLs play inline, other service URLs are unsupported; do not create launch buttons or placeholders; see /agent media guidance. Arbitrary nested frames stay blocked. Do not author clickable links or external-navigation buttons; keep interactions within the canvas and share external URLs in the agent conversation."
},
"draftID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedVersion": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 9007199254740991
},
"state": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"data": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"title",
"format",
"source",
"draftID",
"expectedVersion",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false,
"definitions": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/definitions/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
}
]
}
}
}🔴publish_draft(operationID, expectedRevision, draftID, version, review, ...)
Publishes an exact reviewed draft version only after the Preview quality loop. Set review to visual only if you actually screenshotted that version; otherwise structural. Do not publish a failing layout. Success requires ok and receipt:paint. Failed rendering preserves the previous component.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"draftID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"version": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 9007199254740991
},
"review": {
"type": "string",
"enum": [
"visual",
"structural"
],
"description": "visual if you actually screenshotted this exact version after the Preview quality loop; structural if you only inspected source/metadata. Never claim visual without a screenshot. Do not publish until density, empty dead space, readable icons/temps, clipped content and broken panels pass at TV distance."
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"draftID",
"version",
"review",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🔴discard_draft(operationID, expectedRevision, draftID, version, controlToken)
Removes an exact private draft version and its preview access without changing the live workspace.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"draftID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"version": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 9007199254740991
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"draftID",
"version",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🔴queue_component(operationID, expectedRevision, title, format, source, ...)
Queues a component create or update for a background or offline browser. Returns queued rather than rendered. Default expiry is one hour, maximum 24 hours. Source is removed on completion or expiry.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"title": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"format": {
"type": "string",
"enum": [
"react",
"html"
]
},
"source": {
"type": "string",
"minLength": 1,
"maxLength": 240000,
"description": "React TSX or full HTML. Use a sized nova-video element: YouTube/Vimeo embed URLs play inline, other service URLs are unsupported; do not create launch buttons or placeholders; see /agent media guidance. Arbitrary nested frames stay blocked. Do not author clickable links or external-navigation buttons; keep interactions within the canvas and share external URLs in the agent conversation."
},
"action": {
"type": "string",
"enum": [
"create",
"update"
]
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"state": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"data": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"expiresInSeconds": {
"default": 3600,
"type": "integer",
"minimum": 60,
"maximum": 86400
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"title",
"format",
"source",
"action",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false,
"definitions": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/definitions/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
}
]
}
}
}🟢get_operation(operationID, controlToken)
Reads queued operation status and any browser outcome without contacting the browser. Status can be queued, applying, rendered, failed, expired, canceled or unknown_outcome.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🔴cancel_operation(operationID, controlToken)
Cancels a queued component update and removes its source. Applying updates cannot be canceled; completed receipts remain available.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟡set_agent_status(operationID, expectedRevision, status, controlToken)
Sets or clears an ephemeral building indicator, with browser acknowledgement. Does not change workspace revision or publish drafts. Automatically clears after two minutes.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"status": {
"type": "string",
"enum": [
"working",
"finished"
]
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"status",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟡create_component(operationID, expectedRevision, title, format, source, ...)
Validates, renders and saves a React or HTML component immediately to the right of focus. Success requires browser paint acknowledgement.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"title": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"format": {
"type": "string",
"enum": [
"react",
"html"
]
},
"source": {
"type": "string",
"minLength": 1,
"maxLength": 240000,
"description": "React TSX or full HTML. Use a sized nova-video element: YouTube/Vimeo embed URLs play inline, other service URLs are unsupported; do not create launch buttons or placeholders; see /agent media guidance. Arbitrary nested frames stay blocked. Do not author clickable links or external-navigation buttons; keep interactions within the canvas and share external URLs in the agent conversation."
},
"state": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"data": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"title",
"format",
"source",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false,
"definitions": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/definitions/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
}
]
}
}
}🔴update_component(operationID, expectedRevision, componentID, title, format, ...)
Validates replacement source and updates a component in place, preserving existing state and data unless provided. Failed rendering retains the previous version.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"title": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"format": {
"type": "string",
"enum": [
"react",
"html"
]
},
"source": {
"type": "string",
"minLength": 1,
"maxLength": 240000,
"description": "React TSX or full HTML. Use a sized nova-video element: YouTube/Vimeo embed URLs play inline, other service URLs are unsupported; do not create launch buttons or placeholders; see /agent media guidance. Arbitrary nested frames stay blocked. Do not author clickable links or external-navigation buttons; keep interactions within the canvas and share external URLs in the agent conversation."
},
"state": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"data": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"componentID",
"title",
"format",
"source",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false,
"definitions": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/definitions/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
}
]
}
}
}🔴delete_component(operationID, expectedRevision, componentID, controlToken)
Deletes a component and selects its nearest remaining neighbor.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"componentID",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}⚪navigate(operationID, expectedRevision, componentID, direction, controlToken)
Focuses a component or moves one position. Acknowledges after the selected component renders.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"direction": {
"type": "string",
"enum": [
"next",
"previous"
]
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🔴set_component_data(operationID, expectedRevision, componentID, data, controlToken)
Replaces supplied component data without regenerating source. Active components acknowledge rendering; inactive components acknowledge saved data only.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"data": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"componentID",
"data",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false,
"definitions": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/definitions/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/definitions/__schema0"
}
}
]
}
}
}🔴execute_script(operationID, expectedRevision, componentID, script, controlToken)
Runs an async JavaScript function body in the selected active component sandbox and returns bounded JSON. Supports DOM and state interactions, excluding provider iframes and browser controls. Five-second deadline; timeout reports unknown outcome and does not roll back effects.
輸入結構描述
{
"type": "object",
"properties": {
"operationID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"expectedRevision": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"componentID": {
"type": "string",
"minLength": 1,
"maxLength": 160
},
"script": {
"type": "string",
"minLength": 1,
"maxLength": 32000
},
"controlToken": {
"type": "string",
"minLength": 20,
"maxLength": 200
}
},
"required": [
"operationID",
"expectedRevision",
"componentID",
"script",
"controlToken"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}已記錄的呼叫範例
1 / 10
提示詞： Example call to read_draft
工具：
read_draft輸入參數
{
"draftID": "example-0",
"controlToken": "example-0"
}輸出結果
{
"result": {
"content": [
{
"type": "text",
"text": "MCP error -32602: Input validation error: Invalid arguments for tool read_draft: Too small: expected string to have >=20 characters at controlToken"
}
],
"isError": true
},
"durationMs": 251
}持續時間：251ms
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