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chart-00000000
Chart
[{"type": "function", "function": {"name": "read_file", "description": "Read the contents of a file at the given path. For image files (PNG, JPEG, GIF, WebP, BMP, TIFF), returns a visual content block so you can see the image. For other files, returns the text content.", "parameters": {"type": "object", "properties": {...
[ { "role": "system", "content": "You are a helpful assistant specialized in solving real-world visual tasks with tools. Combine reasoning with available tools to answer questions accurately.\n\n## Workspace\nYour workspace is at: /mnt/data\n\n## Guidelines\n- Use tools to inspect, transform, or measure image...
[ "images/chart/36/362274ebbb725cf0d765446406c4add4ac465378eb0e451386cb5af5a507248f.jpg" ]
chart-00000001
Chart
[{"type": "function", "function": {"name": "read_file", "description": "Read the contents of a file at the given path. For image files (PNG, JPEG, GIF, WebP, BMP, TIFF), returns a visual content block so you can see the image. For other files, returns the text content.", "parameters": {"type": "object", "properties": {...
[ { "role": "system", "content": "You are a helpful assistant specialized in solving real-world visual tasks with tools. Combine reasoning with available tools to answer questions accurately.\n\n## Workspace\nYour workspace is at: /mnt/data\n\n## Guidelines\n- Use tools to inspect, transform, or measure image...
[ "images/chart/c0/c09b833deb6abc7c89a1a8514b00892b198da74134c4797d87dbc4d569f4fed2.jpg", "images/chart/c0/c09b833deb6abc7c89a1a8514b00892b198da74134c4797d87dbc4d569f4fed2.jpg" ]
chart-00000002
Chart
[{"type": "function", "function": {"name": "read_file", "description": "Read the contents of a file at the given path. For image files (PNG, JPEG, GIF, WebP, BMP, TIFF), returns a visual content block so you can see the image. For other files, returns the text content.", "parameters": {"type": "object", "properties": {...
[ { "role": "system", "content": "You are a helpful assistant specialized in solving real-world visual tasks with tools. Combine reasoning with available tools to answer questions accurately.\n\n## Workspace\nYour workspace is at: /mnt/data\n\n## Guidelines\n- Use tools to inspect, transform, or measure image...
[ "images/chart/92/92f4f429e1c20ea8478d5dd8b8a45090518de5082f9628504ea2c34a639679e3.jpg", "images/chart/92/92f4f429e1c20ea8478d5dd8b8a45090518de5082f9628504ea2c34a639679e3.jpg" ]
chart-00000003
Chart
[{"type": "function", "function": {"name": "read_file", "description": "Read the contents of a file at the given path. For image files (PNG, JPEG, GIF, WebP, BMP, TIFF), returns a visual content block so you can see the image. For other files, returns the text content.", "parameters": {"type": "object", "properties": {...
[ { "role": "system", "content": "You are a helpful assistant specialized in solving real-world visual tasks with tools. Combine reasoning with available tools to answer questions accurately.\n\n## Workspace\nYour workspace is at: /mnt/data\n\n## Guidelines\n- Use tools to inspect, transform, or measure image...
[ "images/chart/1f/1f2b69f70409760c2f187980708e0e8fb4a83b9e2a9ea9efccf841d2a31377b0.jpg" ]
chart-00000004
Chart
[{"type": "function", "function": {"name": "read_file", "description": "Read the contents of a file at the given path. For image files (PNG, JPEG, GIF, WebP, BMP, TIFF), returns a visual content block so you can see the image. For other files, returns the text content.", "parameters": {"type": "object", "properties": {...
[ { "role": "system", "content": "You are a helpful assistant specialized in solving real-world visual tasks with tools. Combine reasoning with available tools to answer questions accurately.\n\n## Workspace\nYour workspace is at: /mnt/data\n\n## Guidelines\n- Use tools to inspect, transform, or measure image...
[ "images/chart/f6/f6330a6078bb3964446f7d131eee59e754a9413da80bb739eeb1fc3b09394bfc.jpg" ]
chart-00000005
Chart
[{"type": "function", "function": {"name": "read_file", "description": "Read the contents of a file at the given path. For image files (PNG, JPEG, GIF, WebP, BMP, TIFF), returns a visual content block so you can see the image. For other files, returns the text content.", "parameters": {"type": "object", "properties": {...
[ { "role": "system", "content": "You are a helpful assistant specialized in solving real-world visual tasks with tools. Combine reasoning with available tools to answer questions accurately.\n\n## Workspace\nYour workspace is at: /mnt/data\n\n## Guidelines\n- Use tools to inspect, transform, or measure image...
[ "images/chart/1a/1a764283116807068b1e319dd154527b8d10f471954e971c65c07791f902af89.jpg" ]
chart-00000006
Chart
[{"type": "function", "function": {"name": "read_file", "description": "Read the contents of a file at the given path. For image files (PNG, JPEG, GIF, WebP, BMP, TIFF), returns a visual content block so you can see the image. For other files, returns the text content.", "parameters": {"type": "object", "properties": {...
[ { "role": "system", "content": "You are a helpful assistant specialized in solving real-world visual tasks with tools. Combine reasoning with available tools to answer questions accurately.\n\n## Workspace\nYour workspace is at: /mnt/data\n\n## Guidelines\n- Use tools to inspect, transform, or measure image...
[ "images/chart/ce/cee0f8adbe471b42477f365dc0b1599319b5943db9a632fdd1afdfc3cace1411.jpg" ]
chart-00000007
Chart
"[{\"type\": \"function\", \"function\": {\"name\": \"read_file\", \"description\": \"Read the conte(...TRUNCATED)
[{"role":"system","content":"You are a helpful assistant specialized in solving real-world visual ta(...TRUNCATED)
[ "images/chart/b4/b46f84ed5dff0469498ce946b7ada4079ad996e90bdd862060e0c9573d1cc159.jpg" ]
chart-00000008
Chart
"[{\"type\": \"function\", \"function\": {\"name\": \"read_file\", \"description\": \"Read the conte(...TRUNCATED)
[{"role":"system","content":"You are a helpful assistant specialized in solving real-world visual ta(...TRUNCATED)
["images/chart/e9/e9ef15c85876dc9e6d4104dfab336b0501cfa242687aaa56a49d1a79c032381c.jpg","images/char(...TRUNCATED)
chart-00000009
Chart
"[{\"type\": \"function\", \"function\": {\"name\": \"read_file\", \"description\": \"Read the conte(...TRUNCATED)
[{"role":"system","content":"You are a helpful assistant specialized in solving real-world visual ta(...TRUNCATED)
["images/chart/2a/2af2f9afabeb5d54e65358119ed1d1ebf8c72051049aabb8d0122a926271febd.jpg","images/char(...TRUNCATED)
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OpenVisTool-42K

OpenVisTool-42K contains 42,048 outcome-valid, tool-use-gain-filtered visual tool-use trajectories across Chart, GUI Grounding, Table, Web-to-HTML, and Visual Search. Each example preserves the teacher's reasoning, function calls, tool observations, and final answer in the ms-swift agent format.

Record schema

Every line is one JSON object:

{
  "id": "chart-00000000",
  "domain": "Chart",
  "tools": "[{\"type\":\"function\",...}]",
  "messages": [
    {"role": "system", "content": "..."},
    {"role": "user", "content": "<image>\n..."},
    {"role": "assistant", "content": "<think>...</think>"},
    {"role": "tool_call", "content": "{\"name\":\"crop\",...}"},
    {"role": "tool_response", "content": "<image>\n..."}
  ],
  "images": ["images/chart/ab/ab...ef.jpg"]
}
  • id: stable ID derived from the row index in the published domain shard.
  • domain: one of Chart, GUI Grounding, Table, Web-to-HTML, or Visual Search.
  • tools: a JSON-encoded string containing the function schemas expected by ms-swift. A decoded copy is available as metadata/tools.json.
  • messages: ordered agent messages. Roles are system, user, assistant, tool_call, and tool_response.
  • images: paths relative to the snapshot root. Entries align, in order, with every <image> token across messages. Duplicate entries are intentional when the same image is viewed more than once.

Paths such as /mnt/data/example.png inside messages are runtime paths in the agent's sandbox. They are not paths to the downloaded snapshot and should not be rewritten during training.

Source composition and provenance

Only source images and queries were used as task input; pre-existing source reasoning traces were not used as supervision. The teacher-generated trajectories were selected by outcome validity and measured tool-use gain.

Domain Source dataset Records License
Chart ChartVerse-SFT-600K 13,537 Apache 2.0
GUI Grounding AgentNet 1,170 MIT
GUI Grounding OS-Atlas 6,279 Apache 2.0
GUI Grounding UGround 3,517 CC BY-NC-SA 4.0
Table CoSyn-400K 4,645 ODC-BY 1.0
Table TABLET-Small 285 CC BY 4.0
Visual Search DeepEyesV2-RL 738 Not specified
Visual Search Vero-600K 1,203 Apache 2.0
Web-to-HTML VinciCoder-1.6M-SFT 10,674 Not specified

Licenses are those declared by the upstream dataset cards. Source-specific terms continue to apply where an upstream dataset aggregates other datasets.

Tool-produced crops, masks, bounding-box visualizations, and HTML renderings are packaged alongside original inputs because they are observations in the training trajectories. These derivatives remain subject to any applicable terms of the original image corpus.

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