Bonsai-mcp
Bonsai-mcp - 通过 IfcOpenShell 实现 IFC 的 Blender 模型上下文协议集成
Bonsai-mcp 是BlenderMCP的一个分支,它扩展了 BlenderMCP 的功能,并通过 Bonsai 专门支持 IFC(工业基础类)模型。此集成是一个快速的概念验证,旨在演示将 Claude 或任何 LLM(尽管仅使用 Claude 桌面客户端进行了测试)连接到 Blender 以执行 IfcOpenShell 命令的功能。
特征
IFC 特定功能:查询 IFC 模型、分析空间结构和检查建筑元素
五种强大的 IFC 工具:检查项目信息、列出实体、检查属性、探索空间结构和分析关系
顺序思维:包括来自modelcontextprotocol/servers的顺序思维工具,用于结构化问题解决
来自原始 BlenderMCP 实现的执行代码工具:在 Blender 中创建和修改对象、应用材质以及执行 Python 代码
使用标准模型进行测试:已验证使用默认的 ifcopenshell 房屋模型( AC20-FZK-Haus.ifc )
Related MCP server: BlenderMCP
成分
该系统由两个主要组件组成:
Blender Addon(
addon.py) :Blender 插件,在 Blender 中创建套接字服务器来接收和执行命令,包括 IFC 特定的操作MCP 服务器 (
blender_mcp_tools.py) :一个实现模型上下文协议并连接到 Blender 插件的 Python 服务器
安装
先决条件
Blender 3.0 或更新版本
Python 3.10 或更高版本
uv 包管理器
Blender 的 Bonsai BIM 插件(用于 IFC 功能)
安装 uv:
苹果:
brew install uv视窗:
powershell -c "irm https://astral.sh/uv/install.ps1 | iex"
set Path=C:\Users\[username]\.local\bin;%Path%对于其他平台,请参阅uv 安装指南。
克隆存储库
git clone https://github.com/JotaDeRodriguez/Bonsai_mcpClaude 用于桌面集成
编辑您的claude_desktop_config.json文件(Claude > 设置 > 开发人员 > 编辑配置)以包含:
{
"mcpServers": {
"Bonsai-mcp": {
"command": "uv",
"args": [
"--directory",
"\\your\\path\\to\\Bonsai_mcp",
"run",
"tools.py"
]
}
}
}安装Blender插件
从这个 repo 下载
addon.py文件打开 Blender
前往“编辑”>“首选项”>“附加组件”
点击“安装...”并选择
addon.py文件通过选中“接口:Blender MCP - IFC”旁边的框来启用该插件
用法
启动连接
在 Blender 中,转到 3D 视图侧栏(如果看不到,请按 N)
找到“Blender MCP - IFC”选项卡
点击“连接到 Claude”
确保 MCP 服务器正在运行
与 Claude 一起使用
连接后,您将在 Claude 的界面中看到一个锤子图标,其中包含用于 Blender MCP IFC 集成的工具。
IFC 工具
此 fork 添加了五个强大的 IFC 特定工具:
1. 获取ifc项目信息
获取有关 IFC 项目的基本信息,包括名称、描述和不同实体类型的数量。
例如:“这个 IFC 项目的基本信息是什么?”
2. 列出ifc实体
列出特定类型的 IFC 实体(墙壁、门、空间等)。
例如:“列出此 IFC 模型中的所有墙壁”或“显示这栋建筑中的窗户”
3. 获取ifc属性
通过 GlobalId 获取特定 IFC 实体的所有属性。
例如:“ID 为 1Dvrgv7Tf5IfTEapMkwDQY 的墙的属性是什么?”
4. 获取ifc空间结构
获取 IFC 模型的空间层次结构(场地、建筑、楼层、空间)。
例如:“向我展示这座建筑的空间结构”
5. 获取ifc关系
获取特定 IFC 实体的所有关系。
例如:“入口门的关系是什么?”
执行 Blender 代码
原始 MCP 实现的遗留功能。允许 Claude 在 Blender 中执行任意 Python 代码。请谨慎使用。
顺序思维工具
这种集成还包括顺序思维工具,该工具有助于解决问题和分析问题的详细、逐步的思维过程。
工具参数:
thought(字符串):当前的思考步骤nextThoughtNeeded(布尔值): 是否需要另一个思考步骤thoughtNumber(整数):当前的想法数量totalThoughts(整数):估计需要的想法总数isRevision(布尔值,可选):这是否改变了以前的想法revisesThought(整数,可选):正在重新考虑哪个想法branchFromThought(整数,可选):分支点思想编号branchId(字符串,可选):分支标识符needsMoreThoughts(布尔值,可选):是否需要更多想法
例如:“使用顺序思维来分析这座建筑的能源效率”
示例命令
以下是您可以要求 Claude 使用 IFC 模型执行的操作的一些示例:
“分析一下这个 IFC 模型,告诉我它有多少面墙、多少扇门、多少扇窗户”
“给我看看这个建筑模型的空间结构”
“列出此 IFC 模型中的所有空间及其属性”
“识别该建筑的所有结构元素”
“这面墙和其他元素之间是什么关系?”
“运用顺序思维,基于 IFC 模型为该建筑制定维护计划”
故障排除
连接问题:确保 Blender 插件服务器正在运行,并且 MCP 服务器已在 Claude 中配置
IFC 模型未加载:请确认您已安装 Bonsai BIM 插件,并且已加载 IFC 文件
超时错误:尝试简化您的请求或将其分解为更小的步骤
技术细节
IFC 集成使用 Bonsai BIM 模块访问 Blender 中的 ifcopenshell 功能。通信遵循与原始 BlenderMCP 相同的基于 JSON 的 TCP 套接字协议。
限制和安全注意事项
原始项目中的
execute_blender_code工具仍然可用,允许在Blender中运行任意Python代码。请谨慎使用并始终保存您的工作。复杂的 IFC 模型可能需要将操作分解为更小的步骤。
IFC 查询性能取决于模型的大小和复杂性。
致谢
Siddharth Ahuja的原装 BlenderMCP
来自modelcontextprotocol/servers 的顺序思维工具
基于 Blender 的 Bonsai BIM 插件构建的 IFC 集成
待办事项
游标实现添加“get_selected_ifc_elements”描述
Available Tools
17 toolsexecute_blender_codeC
Execute arbitrary Python code in Blender.
Parameters:
- code: The Python code to execute
| Name | Required | Description | Default |
|---|---|---|---|
| code | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It states the action ('execute arbitrary Python code') but provides no information about security implications, execution environment, error handling, side effects, or what happens to Blender's state. For a code execution tool with zero annotation coverage, this is a significant gap in safety and behavior disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is appropriately concise with two sentences that directly address purpose and parameters. The structure is clear with purpose first, then parameter documentation. There's no wasted text, though it could benefit from more context given the tool's complexity. Every sentence serves a functional purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a code execution tool with no annotations, no output schema, and significant behavioral implications, the description is incomplete. It doesn't address critical context like execution safety, environment details, return values, error conditions, or how this integrates with Blender's state. The description provides only basic operational information without the necessary context for safe and effective use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description explicitly documents the single parameter ('code: The Python code to execute'), adding meaning beyond the schema which has 0% description coverage. However, it provides minimal semantic context - no examples, no constraints on what code is valid, no mention of Blender API availability, or execution scope. The description compensates for the schema gap but only at a basic level.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose as 'Execute arbitrary Python code in Blender' - a specific verb ('execute') with resource ('Python code') and context ('in Blender'). It distinguishes itself from sibling tools which are all export/get/list operations focused on IFC data, making this the only code execution tool. However, it doesn't explicitly contrast with siblings beyond the inherent difference in function.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. While it's clearly different from all sibling tools (which handle IFC data export/query), there's no explicit when/when-not guidance, no mention of prerequisites, and no discussion of alternative approaches for similar functionality. The agent must infer usage context from the tool name alone.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
export_bc3_budgetA
Export a BC3 budget file (FIEBDC-3/2016) based on the IFC model loaded in Blender.
This tool creates a complete construction budget in BC3 format by:
1. Extracting the complete IFC spatial structure (Project → Site → Building → Storey)
2. Extracting IFC quantities and measurements for all building elements
3. Converting to BC3 hierarchical format with IFC2BC3Converter:
- Generates budget chapters from IFC spatial hierarchy
- Groups building elements by type and categories defined in external JSON
- Assigns unit prices from language-specific JSON database
- Creates detailed measurements sorted alphabetically
4. Exports to BC3 file with windows-1252 encoding
Features:
- Multi-language support (Spanish/English) for descriptions and labels
- Automatic element categorization using external JSON configuration
- Optimized conversion with O(1) lookups and batch operations
- Detailed measurements with dimensions (units, length, width, height)
- Full FIEBDC-3/2016 format compliance
Configuration files (in resources/bc3_helper_files/):
- precios_unitarios.json / unit_prices.json: Unit prices per IFC type
- spatial_labels_es.json / spatial_labels_en.json: Spatial element translations
- element_categories.json: IFC type to category mappings
Args:
language: Language for the budget file ('es' for Spanish, 'en' for English). Default is 'es'.
Returns:
A confirmation message with the path to the generated BC3 file in the exports/ folder.
| Name | Required | Description | Default |
|---|---|---|---|
| language | No | es |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden and does well by detailing the multi-step conversion process, configuration file dependencies, and output behavior (creates a file in exports/ folder). It could improve by mentioning potential side effects like file overwriting or performance implications.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is front-loaded with the core purpose but includes extensive details (e.g., step-by-step conversion, features, configuration files) that, while informative, could be streamlined. Some sentences, like listing configuration file paths, may not all earn their place for an AI agent's tool selection.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (multi-step conversion, external dependencies) and lack of annotations or output schema, the description is largely complete, covering process, features, configuration, parameters, and returns. It could be enhanced by clarifying error handling or input validation for the IFC model.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, but the description fully compensates by explaining the 'language' parameter's purpose ('Language for the budget file'), options ('es' for Spanish, 'en' for English), and default value ('Default is 'es''), adding essential meaning beyond the bare schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the specific action ('Export a BC3 budget file') and resource ('based on the IFC model loaded in Blender'), distinguishing it from sibling tools like export_ifc_data or get_ifc_quantities by focusing on budget generation rather than data extraction or retrieval.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage context by specifying it works 'based on the IFC model loaded in Blender,' but does not explicitly state when to use this tool versus alternatives like export_ifc_data or generate_ids, nor does it mention prerequisites or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
export_drawing_pngA
Export drawings as PNG images with custom resolution.
Creates a drawing, with the view type specified, of the IFC building at the specified
height above the floor level. Supports custom resolution for high-quality architectural drawings.
Args:
height_offset: Height in meters above the storey level for the camera position (default 0.5m)
view_type: Type of view - "top" for plan view, "front", "right" and "left" for elevation views, and "isometric" for 3D view
resolution_x: Horizontal resolution in pixels (default 1920, max recommended 4096)
resolution_y: Vertical resolution in pixels (default 1080, max recommended 4096)
storey_name: Specific storey name to add to the file name (if None, prints default in the file name)
output_path: Optional file path to save the PNG (if None, returns as base64 image)
Returns:
metadata and the path of the file image of the drawing at the specified resolution
| Name | Required | Description | Default |
|---|---|---|---|
| height_offset | No | ||
| view_type | No | top | |
| resolution_x | No | ||
| resolution_y | No | ||
| storey_name | No | ||
| output_path | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden and does well by disclosing key behaviors: it creates a drawing (implies mutation/write operation), specifies default values and limits (e.g., 'max recommended 4096'), and describes output handling (file path vs base64). However, it lacks details on permissions, error conditions, or performance implications.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is appropriately sized and front-loaded with the core purpose. The parameter explanations are necessary given the 0% schema coverage, though the 'Returns' section could be integrated more smoothly. No redundant sentences.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a 6-parameter tool with no annotations and no output schema, the description is quite complete: it covers purpose, parameters, and output behavior. It could improve by detailing error cases or performance constraints, but given the context, it provides sufficient guidance for effective tool use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate fully. It provides detailed semantics for all 6 parameters: explains what each parameter controls (e.g., 'Height in meters above the storey level'), lists valid values for 'view_type', specifies defaults and limits, and clarifies optional behavior for 'storey_name' and 'output_path'.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Export drawings as PNG images with custom resolution.' It specifies the verb ('Export'), resource ('drawings'), and format ('PNG images'), and distinguishes it from sibling tools by focusing on visual export rather than data extraction or manipulation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage by mentioning 'architectural drawings' and IFC building context, but does not explicitly state when to use this tool versus alternatives like 'get_user_view' or 'execute_blender_code'. No exclusions or prerequisites are provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
export_ifc_dataB
Export IFC data to a file in JSON or CSV format.
This tool extracts IFC data and creates a structured export file. You can filter
by entity type and/or building level, and choose the output format.
Args:
entity_type: Type of IFC entity to export (e.g., "IfcWall") - leave empty for all entities
level_name: Name of the building level to filter by (e.g., "Level 1") - leave empty for all levels
output_format: "json" or "csv" format for the output file
Returns:
Confirmation message with the export file path or an error message
| Name | Required | Description | Default |
|---|---|---|---|
| entity_type | No | ||
| level_name | No | ||
| output_format | No | csv | |
| ctx | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the tool 'extracts IFC data and creates a structured export file' and returns a confirmation or error message, but lacks critical details: whether this is a read-only operation, if it modifies source data, what permissions are required, file size limits, or performance characteristics. For a data export tool with zero annotation coverage, this is insufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with a clear opening sentence, followed by elaboration, and then a formatted parameter section. It's appropriately sized at 7 sentences. The only minor inefficiency is repeating 'leave empty for all' twice instead of consolidating, but overall it's efficient and front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (4 parameters, no annotations, no output schema), the description is minimally adequate. It covers the basic purpose and parameters but lacks behavioral context, error handling details, and output specifics beyond a vague 'confirmation message.' For a data export tool, more information about file location, format specifics, or limitations would be helpful.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description adds significant value beyond the input schema, which has 0% description coverage. It explains all three user-facing parameters (entity_type, level_name, output_format) with examples and clarifies that empty values mean 'all entities' or 'all levels.' The 'ctx' parameter isn't mentioned, but this is acceptable as it appears to be a system parameter. The description compensates well for the schema's lack of documentation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Export IFC data to a file in JSON or CSV format.' It specifies the verb ('export'), resource ('IFC data'), and output formats. However, it doesn't explicitly differentiate from sibling tools like 'export_bc3_budget' or 'export_drawing_png', which also export data but in different formats or contexts.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It mentions filtering capabilities but doesn't compare to siblings like 'list_ifc_entities' or 'get_ifc_properties' that might retrieve similar data without exporting. There's no mention of prerequisites, dependencies, or typical use cases.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
generate_idsA
Creates an .ids file in Blender/Bonsai by calling the add-on handler 'generate_ids'.
Parameters:
- title (str): Title of the IDS.
- specs (list | JSON str): List of 'specs' containing 'applicability' and 'requirements'.
Each facet is a dict with at least a 'type' field ("Entity", "Attribute", "Property",
"Material", "Classification", "PartOf") and its corresponding attributes.
- description, author, ids_version, date_iso, purpose, milestone: IDS metadata fields.
- output_path (str): Full path to the .ids file to be created. If omitted, the add-on will generate a default name.
Returns:
- JSON (str) with the handler result: {"ok": bool, "output_path": "...", "message": "..."}
or {"ok": False, "error": "..."}
| Name | Required | Description | Default |
|---|---|---|---|
| title | Yes | ||
| specs | Yes | ||
| description | No | ||
| author | No | ||
| ids_version | No | ||
| purpose | No | ||
| milestone | No | ||
| date_iso | No | ||
| output_path | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It discloses that the tool creates a file (implying a write operation) and mentions the return format. However, it doesn't cover important behavioral aspects like error handling beyond the return structure, whether the operation is idempotent, what happens if the output_path already exists, or any performance/rate limit considerations. The description adds some value but leaves significant gaps for a file-creation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections for parameters and returns. It's appropriately sized for a tool with 9 parameters. Every sentence adds value, though the parameter explanations could be slightly more concise. The information is front-loaded with the core purpose first.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity (9 parameters, file creation operation, no annotations, no output schema), the description does a good job. It explains the purpose, documents all parameters semantically, and describes the return format. The main gaps are lack of usage guidelines and incomplete behavioral transparency (missing error scenarios, file overwrite behavior, etc.). For a tool with this parameter complexity, it's quite complete but not perfect.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 0% schema description coverage, the description compensates exceptionally well. It provides detailed semantic explanations for all 9 parameters: it explains what 'title' and 'specs' are (including the complex structure of specs with facet types), lists the 6 metadata parameters, and clarifies the behavior of 'output_path' (default naming if omitted). This goes far beyond what the bare schema provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Creates an .ids file in Blender/Bonsai by calling the add-on handler 'generate_ids''. It specifies the verb ('creates'), resource ('.ids file'), and context (Blender/Bonsai add-on). However, it doesn't explicitly differentiate this tool from its siblings (which are mostly IFC-related tools), though the '.ids file' creation is distinct enough in practice.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, dependencies, or scenarios where this tool is appropriate versus other tools in the server (like execute_blender_code or export functions). The only implicit usage hint is the Blender/Bonsai context, but no explicit when/when-not guidance is provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
georeference_ifc_modelC
Georeferences the IFC currently opened in Bonsai/BlenderBIM by creating or updating IfcProjectedCRS and IfcMapConversion. Optionally updates IfcSite and writes the file to disk.
| Name | Required | Description | Default |
|---|---|---|---|
| crs_mode | Yes | ||
| epsg | No | ||
| crs_name | No | ||
| geodetic_datum | No | ||
| map_projection | No | ||
| map_zone | No | ||
| eastings | No | ||
| northings | No | ||
| orthogonal_height | No | ||
| scale | No | ||
| x_axis_abscissa | No | ||
| x_axis_ordinate | No | ||
| true_north_azimuth_deg | No | ||
| context_filter | No | Model | |
| context_index | No | ||
| site_ref_latitude | No | ||
| site_ref_longitude | No | ||
| site_ref_elevation | No | ||
| site_ref_latitude_dd | No | ||
| site_ref_longitude_dd | No | ||
| overwrite | No | ||
| dry_run | No | ||
| write_path | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the tool creates/updates objects and optionally updates IfcSite and writes to disk, indicating it's a mutation/write operation. However, it lacks critical behavioral details: what permissions are needed, whether changes are reversible, what happens if the file isn't saved, error conditions, or performance characteristics. For a complex 23-parameter mutation tool, this is a significant gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is appropriately concise at three sentences. It's front-loaded with the core purpose, followed by optional behaviors. No wasted words, though it could be slightly more structured (e.g., bullet points for optional features). Every sentence adds value: the first states the main action, the second adds optional site updates, and the third clarifies file writing.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the high complexity (23 parameters, mutation operation), lack of annotations, 0% schema description coverage, and no output schema, the description is incomplete. It doesn't explain what the tool returns (success/failure, updated objects, file path), doesn't detail parameter interactions (e.g., how crs_mode affects other params), and omits error handling. For a tool of this complexity, the description should provide much more contextual guidance.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the schema provides only parameter names and types without explanations. The description mentions 'crs_mode' (implied by 'creating or updating IfcProjectedCRS'), 'epsg' (implied by georeferencing), and 'write_path' (implied by 'writes the file to disk'), but doesn't explain the purpose, relationships, or constraints of the 23 parameters. It fails to compensate for the complete lack of schema descriptions, leaving most parameters semantically opaque.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Georeferences the IFC currently opened in Bonsai/BlenderBIM by creating or updating IfcProjectedCRS and IfcMapConversion.' It specifies the verb ('georeferences'), resource ('IFC'), and target objects (IfcProjectedCRS, IfcMapConversion). However, it doesn't explicitly differentiate from siblings like 'get_ifc_georeferencing_info' (which likely reads rather than writes georeferencing data).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides minimal usage guidance. It mentions the tool operates on 'the IFC currently opened in Bonsai/BlenderBIM,' which implies a prerequisite (an open IFC file), but doesn't specify when to use this tool versus alternatives like 'get_ifc_georeferencing_info' (for reading) or other geospatial tools. No explicit when-not-to-use or alternative recommendations are provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_ifc_georeferencing_infoA
Checks whether the IFC currently opened in Bonsai/BlenderBIM is georeferenced
and returns the key georeferencing information.
Parameters
----------
include_contexts : bool
If True, adds a breakdown of the RepresentationContexts and operations.
Returns
--------
str (JSON pretty-printed)
{
"georeferenced": true|false,
"crs": {
"name": str|null,
"geodetic_datum": str|null,
"vertical_datum": str|null,
"map_unit": str|null
},
"map_conversion": {
"eastings": float|null,
"northings": float|null,
"orthogonal_height": float|null,
"scale": float|null,
"x_axis_abscissa": float|null,
"x_axis_ordinate": float|null
},
"world_coordinate_system": {
"origin": [x, y, z]|null
},
"true_north": {
"direction_ratios": [x, y]|null
},
"site": {
"local_placement_origin": [x, y, z]|null,
"ref_latitude": [deg, min, sec, millionth]|null,
"ref_longitude": [deg, min, sec, millionth]|null,
"ref_elevation": float|null
},
"contexts": [...], # only if include_contexts = true
"warnings": [ ... ] # Informational message
}
Notes
-----
- This tool acts as a wrapper: it sends the "get_ifc_georeferencing_info"
command to the Blender add-on. The add-on must implement that logic
(reading IfcProject/IfcGeometricRepresentationContext, IfcMapConversion,
TargetCRS, IfcSite.RefLatitude/RefLongitude/RefElevation, etc.).
- It always returns a JSON string with indentation for easier reading.
| Name | Required | Description | Default |
|---|---|---|---|
| include_contexts | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes the tool's behavior: it checks georeferencing status, returns structured JSON data, acts as a wrapper for a Blender add-on command, and always returns pretty-printed JSON. However, it doesn't mention performance characteristics, error handling, or prerequisites like whether an IFC file must be loaded.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with clear sections (description, parameters, returns, notes) and front-loaded with the core purpose. Most sentences earn their place by explaining functionality, parameters, returns, or implementation details. The detailed return structure is necessary but makes it somewhat lengthy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (1 parameter, no annotations, no output schema), the description is complete enough. It thoroughly documents the return format with detailed JSON structure, explains the parameter's effect, notes the wrapper implementation, and covers the tool's purpose. No output schema exists, so the detailed return documentation is essential and well-provided.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description adds significant meaning beyond the input schema. The schema only shows 'include_contexts' as a boolean with 0% description coverage, while the description explains that this parameter adds 'a breakdown of the RepresentationContexts and operations' and shows exactly where this data appears in the output ('contexts' field only if true). This compensates well for the low schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose with specific verbs ('checks', 'returns') and resources ('IFC currently opened in Bonsai/BlenderBIM', 'key georeferencing information'). It distinguishes itself from siblings like 'georeference_ifc_model' (which sets georeferencing) by focusing on information retrieval rather than modification.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage when georeferencing information is needed, but doesn't explicitly state when to use this tool versus alternatives like 'get_ifc_project_info' or 'get_ifc_spatial_structure'. It mentions the tool acts as a wrapper for the Blender add-on, suggesting it's for querying georeferencing data specifically, but lacks explicit guidance on alternatives or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_ifc_project_infoB
Get basic information about the IFC project, including name, description,
and counts of different entity types.
Returns:
A JSON-formatted string with project information
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions the return format ('JSON-formatted string') but doesn't cover other critical aspects like whether this is a read-only operation, potential performance impacts, error conditions, or if it requires specific permissions. For a tool with zero annotation coverage, this is inadequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise and well-structured with two sentences: one stating the purpose and one specifying the return format. It's front-loaded with the core functionality, though the second sentence could be integrated more smoothly.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (0 parameters, no output schema), the description is minimally adequate. It covers what the tool does and the return format, but lacks details on usage context, behavioral traits, or error handling. With no annotations and multiple sibling tools, it should provide more guidance to be fully complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has 0 parameters, and the input schema has 100% description coverage (though empty). The description doesn't need to add parameter details, so it meets the baseline expectation. No extra value is added, but none is required.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Get basic information about the IFC project, including name, description, and counts of different entity types.' This specifies the verb ('Get'), resource ('IFC project'), and scope ('basic information'), though it doesn't explicitly differentiate from sibling tools like 'get_ifc_georeferencing_info' or 'get_ifc_properties'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It doesn't mention any prerequisites, context, or exclusions, and with multiple sibling tools that also retrieve IFC data (e.g., 'get_ifc_georeferencing_info', 'get_ifc_properties'), the lack of differentiation is a significant gap.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_ifc_propertiesA
Get properties of IFC entities. Can be used to get properties of a specific entity by GlobalId,
or to get properties of all currently selected objects in Blender.
Args:
global_id: GlobalId of a specific IFC entity (optional if selected_only is True)
selected_only: If True, return properties for all selected objects instead of a specific entity
Returns:
A JSON-formatted string with entity information and properties
| Name | Required | Description | Default |
|---|---|---|---|
| global_id | No | ||
| selected_only | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses the tool's dual behavior modes and output format (JSON-formatted string), but lacks details on permissions, rate limits, error conditions, or whether it's read-only (implied by 'Get' but not explicit). It adequately describes what the tool does but misses some behavioral traits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is front-loaded with the core purpose, followed by clear sections for Args and Returns. Every sentence earns its place: no redundancy, and the structure (purpose, parameters, return) is logical and efficient for quick understanding.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 2 parameters with 0% schema coverage and no output schema, the description provides adequate basics (purpose, parameters, return format) but lacks depth. It doesn't explain the JSON structure, error handling, or dependencies (e.g., Blender context), leaving gaps for a tool with moderate complexity and no annotations.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema description coverage is 0%, so the description must compensate. It adds meaningful semantics: explaining that global_id is optional when selected_only is True, clarifying that selected_only returns properties for all selected objects, and indicating the mutual exclusivity between the two parameters. This goes beyond the bare schema, though it could detail parameter formats or constraints more.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'Get' and resource 'properties of IFC entities', specifying two distinct modes: by GlobalId or for selected Blender objects. It distinguishes itself from siblings like 'get_ifc_quantities' or 'get_ifc_relationships' by focusing on properties rather than other entity attributes.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context for when to use each mode (by GlobalId vs. selected objects) and mentions the optional nature of global_id when selected_only is True. However, it doesn't explicitly state when to choose this tool over similar siblings like 'get_selected_ifc_entities' or 'list_ifc_entities', which might offer overlapping functionality.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_ifc_quantitiesC
Extract and get basic qtos about the IFC project.
Returns:
A JSON-formatted string with project quantities information
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It mentions the return format ('JSON-formatted string') but doesn't disclose behavioral traits like whether this is a read-only operation, potential performance impacts, or any prerequisites. For a tool with zero annotation coverage, this leaves significant gaps in understanding how it behaves.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is brief and front-loaded with the core purpose in the first sentence. The second sentence about return format is useful but could be integrated more smoothly. Overall, it's efficient with minimal waste, though slightly fragmented.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations and no output schema, the description is incomplete. It doesn't explain what 'basic qtos' includes, how the data is structured, or any limitations. For a data retrieval tool in a context with many similar siblings, more detail is needed to ensure proper use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has 0 parameters with 100% schema description coverage, so the schema fully documents the lack of inputs. The description adds no parameter information, which is appropriate here. Baseline is 4 for zero parameters, as no compensation is needed.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states the tool 'Extract and get basic qtos about the IFC project' which provides a general purpose (extract quantities) but lacks specificity. It doesn't clearly distinguish from siblings like 'get_ifc_project_info' or 'get_ifc_properties', making it somewhat vague about what exactly 'qtos' (quantities) entails compared to other data retrieval tools.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is provided on when to use this tool versus alternatives. With siblings like 'get_ifc_project_info' and 'get_ifc_properties' that might retrieve overlapping or related data, the description offers no context about when this specific quantity extraction is appropriate, leaving usage decisions unclear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_ifc_relationshipsB
Get all relationships for a specific IFC entity.
Args:
global_id: GlobalId of the IFC entity
Returns:
A JSON-formatted string with all relationships the entity participates in
| Name | Required | Description | Default |
|---|---|---|---|
| global_id | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It states the tool retrieves relationships but lacks details on permissions, rate limits, error handling, or data format specifics beyond 'JSON-formatted string.' For a read operation with no annotation coverage, this is insufficient to fully understand its behavior and limitations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is highly concise and well-structured: a clear purpose statement followed by brief 'Args' and 'Returns' sections. Every sentence adds value without redundancy, making it easy to scan and understand quickly. This efficient formatting enhances usability.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (one parameter, no output schema, no annotations), the description is minimally complete. It covers the basic purpose and parameter semantics but lacks output details (e.g., structure of the JSON) and behavioral context. For a straightforward read tool, this is adequate but leaves gaps in full understanding.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description adds meaningful context for the single parameter 'global_id' by explaining it is the 'GlobalId of the IFC entity,' which clarifies its purpose beyond the schema's minimal title 'Global Id.' With 0% schema description coverage and only one parameter, this compensation is adequate, though not exhaustive (e.g., no format examples).
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Get all relationships for a specific IFC entity.' It uses a specific verb ('Get') and resource ('relationships'), but does not explicitly distinguish it from sibling tools like 'get_ifc_properties' or 'get_ifc_quantities', which might retrieve different types of entity data. This makes it clear but not fully differentiated from alternatives.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It does not mention sibling tools such as 'get_ifc_properties' or 'get_ifc_spatial_structure', which might be used for related queries about IFC entities. Without this context, users must infer usage based on the tool name alone, leading to potential confusion.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_ifc_spatial_structureB
Get the spatial structure of the IFC model (site, building, storey, space hierarchy).
Returns:
A JSON-formatted string representing the hierarchical structure of the IFC model
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states the return format ('JSON-formatted string') and the hierarchical scope, but it lacks details on permissions, rate limits, error handling, or whether this is a read-only operation (implied by 'Get' but not explicit). For a tool with zero annotation coverage, this is insufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is front-loaded with the core purpose in the first sentence and adds a concise 'Returns' section. Every sentence earns its place by clarifying the output format without redundancy, making it highly efficient and well-structured.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity (hierarchical data retrieval), no annotations, and no output schema, the description is minimally adequate. It explains what the tool does and the return format, but it lacks details on the JSON structure, error cases, or dependencies. This meets the minimum viable threshold but has clear gaps for a tool with no structured support.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 0 parameters with 100% coverage, so the schema fully documents the lack of inputs. The description adds no parameter information, which is appropriate here. A baseline of 4 is given since no parameters exist, and the description doesn't need to compensate for any gaps.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose with a specific verb ('Get') and resource ('spatial structure of the IFC model'), and it distinguishes the hierarchical focus from siblings like 'get_ifc_total_structure' or 'get_ifc_relationships'. However, it doesn't explicitly differentiate from 'list_ifc_entities' or 'get_selected_ifc_entities', which might also involve spatial elements, preventing a perfect score.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, context (e.g., after loading a model), or comparisons to siblings like 'get_ifc_total_structure' for broader data or 'list_ifc_entities' for flat lists. This leaves the agent without explicit usage direction.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_ifc_total_structureA
Get the complete IFC structure including spatial hierarchy and all building elements.
This function extends the basic spatial structure to include building elements like walls,
doors, windows, columns, beams, etc. that are contained within each spatial element.
It provides a comprehensive view of how the building is organized both spatially and
in terms of its physical components.
Returns:
A JSON-formatted string representing the complete hierarchical structure of the IFC model
including spatial elements and their contained building elements, plus summary statistics
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It describes what the tool returns (JSON-formatted string with hierarchical structure and summary statistics) and its scope (spatial elements and building elements). However, it does not cover potential behavioral traits like performance implications, error conditions, or data size limitations that might be relevant for a comprehensive structure tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured and appropriately sized. It starts with a clear purpose statement, elaborates on what the tool extends and includes, and ends with return details. Each sentence adds value without redundancy. It could be slightly more concise by combining some clauses, but overall it is efficient and front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (comprehensive IFC structure) and lack of annotations and output schema, the description does a good job of covering key aspects: purpose, scope, return format, and differentiation from basic tools. It provides enough context for an agent to understand what the tool does and when to use it, though it could benefit from more behavioral details like performance notes.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has 0 parameters, and schema description coverage is 100%. With no parameters to document, the description appropriately focuses on output semantics. It adds value by explaining what the return data includes (hierarchical structure, building elements, summary statistics) and the format (JSON-formatted string), which compensates for the lack of an output schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Get the complete IFC structure including spatial hierarchy and all building elements.' It specifies the verb ('Get'), resource ('complete IFC structure'), and distinguishes from sibling tools like 'get_ifc_spatial_structure' by emphasizing inclusion of building elements. The description explicitly contrasts with the basic spatial structure, making the differentiation clear.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context for when to use this tool: it 'extends the basic spatial structure' and is for obtaining a 'comprehensive view' of the building organization. It implies an alternative (the basic spatial structure tool) but does not explicitly name it or provide exclusion criteria. The guidance is sufficient to understand the tool's role but lacks explicit when-not-to-use instructions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_selected_ifc_entitiesA
Get IFC entities corresponding to the currently selected objects in Blender.
This allows working specifically with objects the user has manually selected in the Blender UI.
Returns:
A JSON-formatted string with information about the selected IFC entities
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses that the tool retrieves data (implied read-only) and specifies the return format ('JSON-formatted string'), but lacks details on permissions, error handling, or rate limits, which are important for a tool interacting with Blender selections.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is front-loaded with the core purpose in the first sentence, followed by usage context and return format in two additional sentences. Every sentence adds value without redundancy, making it efficiently structured and easy to parse.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (interfacing with Blender selections and IFC data), no annotations, and no output schema, the description is adequate but incomplete. It explains what the tool does and the return format, but lacks details on output structure, error cases, or prerequisites like Blender being in a specific state.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description appropriately does not discuss parameters, focusing instead on the tool's purpose and output, which aligns with the baseline expectation for zero-parameter tools.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the specific action ('Get IFC entities') and the target resource ('currently selected objects in Blender'), distinguishing it from siblings like 'list_ifc_entities' or 'get_ifc_properties' by focusing on user-selected objects rather than all entities or specific properties.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It provides clear context for when to use this tool ('working specifically with objects the user has manually selected in the Blender UI'), but does not explicitly mention when not to use it or name alternatives like 'list_ifc_entities' for non-selected objects.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_user_viewA
Capture and return the current Blender viewport as an image.
Shows what the user is currently seeing in Blender.
Focus mostly on the 3D viewport. Use the UI to assist in your understanding of the scene but only refer to it if specifically prompted.
Args:
max_dimension: Maximum dimension (width or height) in pixels for the returned image
compression_quality: Image compression quality (1-100, higher is better quality but larger)
Returns:
An image of the current Blender viewport
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden. It discloses the tool captures the viewport as an image and mentions focusing on the 3D viewport with UI assistance only when prompted. However, it doesn't describe error conditions, performance characteristics, or what happens if Blender isn't in a viewport state.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with purpose statement, usage context, parameter details, and return value. Every sentence adds value: the first states the core function, the second clarifies scope, the third provides UI guidance, and the parameter/return sections document behavior.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no annotations, no output schema, and 0 parameters in the schema, the description does well by explaining what it captures, how to use it, and documenting two important parameters. It could be more complete by describing the image format or error cases, but it covers the essentials adequately.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 0 parameters with 100% coverage, so the baseline is 4. The description includes an 'Args' section with two parameters (max_dimension, compression_quality) that aren't in the schema, adding value beyond the structured data by documenting these optional parameters.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Capture and return the current Blender viewport as an image' with specific verb ('capture and return') and resource ('current Blender viewport'). It distinguishes from siblings by focusing on the visual viewport rather than IFC data, code execution, or exports.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear context: 'Shows what the user is currently seeing in Blender' and 'Focus mostly on the 3D viewport.' It gives guidance on when to use it (for viewport capture) but doesn't explicitly state when not to use it or name specific alternatives among the sibling tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_ifc_entitiesB
List IFC entities of a specific type. Can be filtered to only include objects
currently selected in the Blender UI.
Args:
entity_type: Type of IFC entity to list (e.g., "IfcWall")
limit: Maximum number of entities to return
selected_only: If True, only return information about selected objects
Returns:
A JSON-formatted string listing the specified entities
| Name | Required | Description | Default |
|---|---|---|---|
| entity_type | No | ||
| limit | No | ||
| selected_only | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It mentions the tool lists entities and can filter by selection, but doesn't disclose critical behavioral traits such as whether this is a read-only operation, potential performance impacts, rate limits, authentication needs, or what happens with null entity_type. The description is minimal and lacks depth for a tool with parameters.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured and appropriately sized. It starts with a clear purpose statement, followed by an Args section detailing each parameter with brief explanations, and a Returns section. Every sentence earns its place with no redundant information, making it easy to scan and understand quickly.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's moderate complexity (3 parameters, no annotations, no output schema), the description is partially complete. It covers the purpose and parameters well but lacks behavioral context (e.g., read-only nature, error handling) and doesn't detail the return format beyond 'A JSON-formatted string,' which is insufficient without an output schema. For a listing tool with filtering options, more behavioral transparency would be beneficial.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description adds significant meaning beyond the input schema, which has 0% schema description coverage. It explains all three parameters: entity_type ('Type of IFC entity to list'), limit ('Maximum number of entities to return'), and selected_only ('If True, only return information about selected objects'). This fully compensates for the schema's lack of descriptions, providing clear semantic context for each parameter.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'List IFC entities of a specific type' with filtering options. It specifies the verb ('List') and resource ('IFC entities'), distinguishing it from siblings like 'get_selected_ifc_entities' by mentioning selection filtering as an option rather than the primary function. However, it doesn't explicitly differentiate from other listing tools like 'get_ifc_spatial_structure' or 'get_ifc_total_structure'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage context by mentioning 'Can be filtered to only include objects currently selected in the Blender UI,' which suggests when to use the selected_only parameter. However, it doesn't provide explicit guidance on when to choose this tool over similar siblings like 'get_selected_ifc_entities' or other get_ifc_* tools, nor does it mention prerequisites or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
place_ifc_objectB
Place an IFC object at a specified location with optional rotation.
This tool allows you to create and position IFC elements in the model.
The object is placed using the specified IFC type and positioned
at the given coordinates with optional rotation around the Z axis.
Args:
type_name: Name of the IFC element type to place (must exist in the model)
x: X-coordinate in model space
y: Y-coordinate in model space
z: Z-coordinate in model space
rotation: Rotation angle in degrees around the Z axis (default: 0)
Returns:
A message with the result of the placement operation
| Name | Required | Description | Default |
|---|---|---|---|
| type_name | Yes | ||
| x | Yes | ||
| y | Yes | ||
| z | Yes | ||
| rotation | No | ||
| ctx | No |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It describes a write operation ('create and position IFC elements'), which implies mutation, but doesn't address critical behavioral aspects like permissions required, whether the operation is reversible, potential side effects on the model, or error handling. The return value description ('A message with the result') is vague about success/failure indicators.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured and appropriately sized. It begins with a clear purpose statement, followed by elaboration, then provides a formatted parameter section with clear documentation. While efficient, the 'Returns' section could be more specific about what the message contains, but overall the structure is logical and front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given this is a mutation tool with no annotations and no output schema, the description is moderately complete. It adequately explains the core functionality and parameters but lacks important contextual information about behavioral traits, error conditions, and the structure of return values. The description covers the 'what' but insufficiently addresses the 'how' and 'what happens after' aspects.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description provides excellent parameter semantics beyond the input schema. With 0% schema description coverage, the description fully documents all 4 required parameters (type_name, x, y, z) and the optional rotation parameter, explaining what each represents, their data types, and default values. The 'ctx' parameter is not mentioned, but this appears to be an internal context parameter, so the description effectively covers all user-facing parameters.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Place an IFC object at a specified location with optional rotation.' It specifies the verb ('place'), resource ('IFC object'), and key actions (positioning with coordinates and rotation). However, it doesn't explicitly distinguish this from potential sibling tools like 'get_selected_ifc_entities' or 'list_ifc_entities', which are read operations versus this write operation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides minimal usage guidance. It states that the object type 'must exist in the model,' which is a prerequisite, but offers no explicit guidance on when to use this tool versus alternatives. There's no mention of when not to use it or what other tools might be more appropriate for related tasks.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
12 tool updates
v1.0.0- Added
export_bc3_budget - Added
export_drawing_png - Changed
export_ifc_data6 fields changed- added
Input schema / $defsAdded value: +{ + "Context": { + "description": "Context object providing access to MCP capabilities.\n\nThis provides a cleaner interface to MCP's RequestContext functionality.\nIt gets injected into tool and resource functions that request it via type hints.\n\nTo use context in a tool function, add a parameter with the Context type annotation:\n\n```python\n@server.tool()\ndef my_tool(x: int, ctx: Context) -> str:\n # Log messages to the client\n ctx.info(f\"Processing {x}\")\n ctx.debug(\"Debug info\")\n ctx.warning(\"Warning message\")\n ctx.error(\"Error message\")\n\n # Report progress\n ctx.report_progress(50, 100)\n\n # Access resources\n data = ctx.read_resource(\"resource://data\")\n\n # Get request info\n request_id = ctx.request_id\n client_id = ctx.client_id\n\n return str(x)\n```\n\nThe context parameter name can be anything as long as it's annotated with Context.\nThe context is optional - tools that don't need it can omit the parameter.", + "properties": {}, + "title": "Context", + "type": "object" + } +} - added
Input schema / properties / ctxAdded value: +{ + "anyOf": [ + { + "$ref": "#/$defs/Context" + }, + { + "type": "null" + } + ], + "default": null +} - added
Input schema / properties / entity_type / anyOfAdded value: +[ + { + "type": "string" + }, + { + "type": "null" + } +] - removed
Input schema / properties / entity_type / typeRemoved value: -"string" - added
Input schema / properties / level_name / anyOfAdded value: +[ + { + "type": "string" + }, + { + "type": "null" + } +] - removed
Input schema / properties / level_name / typeRemoved value: -"string"
- Added
generate_ids - Added
georeference_ifc_model - Added
get_ifc_georeferencing_info - Changed
get_ifc_properties2 fields changed- added
Input schema / properties / global_id / anyOfAdded value: +[ + { + "type": "string" + }, + { + "type": "null" + } +] - removed
Input schema / properties / global_id / typeRemoved value: -"string"
- Added
get_ifc_quantities - Added
get_ifc_total_structure - Changed
list_ifc_entities2 fields changed- added
Input schema / properties / entity_type / anyOfAdded value: +[ + { + "type": "string" + }, + { + "type": "null" + } +] - removed
Input schema / properties / entity_type / typeRemoved value: -"string"
- Changed
place_ifc_object2 fields changed- added
Input schema / $defsAdded value: +{ + "Context": { + "description": "Context object providing access to MCP capabilities.\n\nThis provides a cleaner interface to MCP's RequestContext functionality.\nIt gets injected into tool and resource functions that request it via type hints.\n\nTo use context in a tool function, add a parameter with the Context type annotation:\n\n```python\n@server.tool()\ndef my_tool(x: int, ctx: Context) -> str:\n # Log messages to the client\n ctx.info(f\"Processing {x}\")\n ctx.debug(\"Debug info\")\n ctx.warning(\"Warning message\")\n ctx.error(\"Error message\")\n\n # Report progress\n ctx.report_progress(50, 100)\n\n # Access resources\n data = ctx.read_resource(\"resource://data\")\n\n # Get request info\n request_id = ctx.request_id\n client_id = ctx.client_id\n\n return str(x)\n```\n\nThe context parameter name can be anything as long as it's annotated with Context.\nThe context is optional - tools that don't need it can omit the parameter.", + "properties": {}, + "title": "Context", + "type": "object" + } +} - added
Input schema / properties / ctxAdded value: +{ + "anyOf": [ + { + "$ref": "#/$defs/Context" + }, + { + "type": "null" + } + ], + "default": null +}
- Removed
sequentialthinking
11 tool updates
- First observed
execute_blender_code - First observed
export_ifc_data - First observed
get_ifc_project_info - First observed
get_ifc_properties - First observed
get_ifc_relationships - First observed
get_ifc_spatial_structure - First observed
get_selected_ifc_entities - First observed
get_user_view - First observed
list_ifc_entities - First observed
place_ifc_object - First observed
sequentialthinking
TDQS
Scored across 17 tools
Most tools have distinct purposes with clear boundaries, such as export_bc3_budget for budget generation and get_ifc_georeferencing_info for georeferencing checks. However, some overlap exists between get_ifc_spatial_structure and get_ifc_total_structure, where the latter extends the former, potentially causing confusion about which to use for hierarchical data. Tools like get_ifc_properties and get_ifc_quantities are clearly differentiated by focusing on properties versus quantities.
Tool names follow a highly consistent verb_noun pattern throughout, using snake_case uniformly. Examples include execute_blender_code, export_bc3_budget, get_ifc_project_info, and list_ifc_entities. This predictability makes it easy for agents to understand and navigate the toolset without confusion from mixed naming conventions.
With 17 tools, the count is slightly high but reasonable for the domain of IFC/BIM modeling and Blender integration, which involves data extraction, export, visualization, and manipulation. Most tools serve specific functions like georeferencing, drawing export, or entity listing, though a few could potentially be consolidated (e.g., spatial structure tools) without losing functionality.
The toolset provides comprehensive coverage for IFC/BIM workflows, including data retrieval (e.g., get_ifc_project_info, get_ifc_properties), export functions (e.g., export_bc3_budget, export_drawing_png), spatial analysis (e.g., get_ifc_spatial_structure), and manipulation (e.g., place_ifc_object, georeference_ifc_model). It supports CRUD-like operations and lifecycle management, with no obvious gaps that would hinder agent performance in this domain.
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