Text to 3D API

Text to 3D API is a feature that allows you to integrate Meshy's Text to 3D capabilities into your own application. In this section, you'll find all the information you need to get started with this API.

The workflow of Text to 3D involves two stages: the preview stage and the refine stage. In the preview stage, a base mesh is generated with no texture applied, allowing you to evaluate the geometry. In the refine stage, the preview mesh is textured based on the text prompt.

POST/openapi/v2/text-to-3d

Create a Text to 3D Preview Task

This endpoint allows you to create a new Text to 3D Preview task. Refer to The Text to 3D Task Object to see which properties are included with Text to 3D task object.

Parameters

Name
mode
Type
string
Required
Description
This field should be set to "preview" when creating a preview task.
Name
prompt
Type
string
Required
Description
Describe what kind of object the 3D model is. Maximum 600 characters.
Name
model_type
Type
string
default standard
Description
Specify the type of 3D mesh generation.
Available values:
- standard: Regular high-detail 3D mesh generation.
- lowpoly: Generates low-poly mesh optimized for cleaner polygons.
When lowpoly is selected, ai_model, topology, target_polycount, should_remesh are ignored.
Name
ai_model
Type
string
default latest
Description
ID of the model to use. Available values: meshy-5, meshy-6, latest (Meshy 6).
Name
should_remesh
Type
boolean
default false (meshy-6), true (others)
Description
Controls whether to enable the remesh phase. When set to false, the API will directly return the highest-precision triangular mesh.

Applies only when should_remesh = true

Name
topology
Type
string
default triangle
Description
Specify the topology of the generated model.
Available values:
- quad: Generate a quad-dominant mesh.
- triangle: Generate a decimated triangle mesh.
Name
target_polycount
Type
integer
default 30,000
Description
Specify the target number of polygons in the generated model. The actual number of polygons may deviate from the target depending on the complexity of the geometry.
The valid value range varies depending on the user tier:
- 100 to 300,000 (inclusive)
Name
decimation_mode
Type
integer
Description
Enable adaptive decimation by setting a polycount level. When set, target_polycount is ignored.
Available values:
- 1: Adaptive — ultra polycount.
- 2: Adaptive — high polycount.
- 3: Adaptive — medium polycount.
- 4: Adaptive — low polycount.

Name
symmetry_mode
Type
string
default auto
Description
The symmetry_mode field controls symmetry behavior during the model generation process.
The valid values are:
- off: Disables symmetry.
- auto: Automatically determines and applies symmetry based on input geometry.
- on: Enforces symmetry during generation.
Name
pose_mode
Type
string
default ""
Description
Specify the pose mode for the generated model.
Available values:
- a-pose: Generate the model in an A pose.
- t-pose: Generate the model in a T pose.
- "" (empty string): No specific pose applied.
Name
is_a_t_pose
Type
boolean
⚠ deprecated
default false
Description
Use pose_mode instead. Whether to generate the model in an A/T pose.
Name
art_style
Type
string
⚠ deprecated
default realistic
Description
Not supported by Meshy-6. Requests using Meshy-6 will ignore art_style, and some combinations may cause errors. Available values: realistic, sculpture.
enable_pbr should be set to false when using Sculpture style, as Sculpture style generates its own set of PBR maps.
Name
moderation
Type
boolean
default false
Description
When set to true, the input content will automatically be screened for potentially harmful content. If harmful content is detected, the task will not proceed to generation.
The text from prompt will be screened.
Name
target_formats
Type
string[]
Description
Specifies which 3D file formats to include in the output. Only the requested formats will be generated and returned, which can reduce task completion time. When omitted, all supported formats are included.
Available values: glb, obj, fbx, stl, usdz, 3mf
When omitted, all formats except 3mf are generated. 3mf is only included when explicitly specified.
Name
auto_size
Type
boolean
default false
Description
When set to true, the service uses AI vision to automatically estimate the real-world height of the object and resize the model accordingly. The origin will default to bottom unless origin_at is explicitly set.

Applies only when auto_size = true

Name
origin_at
Type
string
default bottom
Description
Position of the origin when auto_size is enabled.
Available values: bottom, center.

Returns

The result property of the response contains the task id of the newly created Text to 3D task.

Failure Modes

Name
400 - Bad Request
Description
The request was unacceptable. Common causes:
- Missing parameter: A required parameter (e.g., prompt, mode) is missing.
- Invalid parameter: art_style is not one of the allowed values.
- Prompt too long: The prompt exceeds the character limit.
Name
401 - Unauthorized
Description
Authentication failed. Please check your API key.
Name
402 - Payment Required
Description
Insufficient credits to perform this task.
Name
429 - Too Many Requests
Description
You have exceeded your rate limit.

Request

POST

/openapi/v2/text-to-3d

# Simple preview with required params only
curl https://api.meshy.ai/openapi/v2/text-to-3d \
  -H 'Authorization: Bearer ${YOUR_API_KEY}' \
  -H 'Content-Type: application/json' \
  -d '{
  "mode": "preview",
  "prompt": "a monster mask"
}'

# Preview with remesh and A-pose
curl https://api.meshy.ai/openapi/v2/text-to-3d \
  -H 'Authorization: Bearer ${YOUR_API_KEY}' \
  -H 'Content-Type: application/json' \
  -d '{
  "mode": "preview",
  "prompt": "a futuristic robot warrior",
  "should_remesh": true,
  "target_polycount": 100000,
  "pose_mode": "a-pose",
  "target_formats": ["glb"]
}'

Response

{
  "result": "018a210d-8ba4-705c-b111-1f1776f7f578"
}

POST/openapi/v2/text-to-3d

Create a Text to 3D Refine Task

This endpoint allows you to create a new Text to 3D Refine task.

Parameters

Name
mode
Type
string
Required
Description
This field should be set to "refine" when creating a refine task.
Name
preview_task_id
Type
string
Required
Description
The corresponding preview task id.
The status of the given preview task must be SUCCEEDED.
Name
enable_pbr
Type
boolean
default false
Description
Generate PBR Maps (metallic, roughness, normal) in addition to the base color.
Name
texture_prompt
Type
string
Description
Provide an additional text prompt to guide the texturing process. Maximum 600 characters.
Name
texture_image_url
Type
string
Description
Provide a 2d image to guide the texturing process. We currently support .jpg, .jpeg, and .png formats.
There are two ways to provide the image:
- Publicly accessible URL: A URL that is accessible from the public internet
- Data URI: A base64-encoded data URI of the image. Example of a data URI: data:image/jpeg;base64,<your base64-encoded image data>
Image texturing may not work optimally if there are substantial geometry differences between the original asset and uploaded image. Only one of texture_image_url or texture_prompt may be used to guide the texturing process. If both parameters are provided, then texture_prompt will be used to texture the model by default.
Name
ai_model
Type
string
default latest
Description
ID of the model to use for refining. Available values: meshy-5, meshy-6, latest (Meshy 6).
Name
moderation
Type
boolean
default false
Description
When set to true, the input content will automatically be screened for potentially harmful content. If harmful content is detected, the task will not proceed to generation.
Both the text from texture_prompt and the image from texture_image_url will be screened.
Name
remove_lighting
Type
boolean
default true
Description
Removes highlights and shadows from the base color texture, producing a cleaner result that works better under custom lighting setups.
Only supported when ai_model is meshy-6 or latest.
Name
target_formats
Type
string[]
Description
Specifies which 3D file formats to include in the output. Only the requested formats will be generated and returned, which can reduce task completion time. When omitted, all supported formats are included.
Available values: glb, obj, fbx, stl, usdz, 3mf
When omitted, all formats except 3mf are generated. 3mf is only included when explicitly specified.
Name
auto_size
Type
boolean
default false
Description
When set to true, the service uses AI vision to automatically estimate the real-world height of the object and resize the model accordingly. The origin will default to bottom unless origin_at is explicitly set.

Applies only when auto_size = true

Name
origin_at
Type
string
default bottom
Description
Position of the origin when auto_size is enabled.
Available values: bottom, center.

Returns

The result property of the response contains the task id of the newly created Text to 3D task.

Failure Modes

Name
400 - Bad Request
Description
The request was unacceptable. Common causes:
- Invalid task ID: The preview_task_id is invalid or does not exist.
- Task not ready: The preview task has not succeeded yet.
- Model mismatch: The preview task's AI model is incompatible with the requested refine model.
Name
401 - Unauthorized
Description
Authentication failed. Please check your API key.
Name
402 - Payment Required
Description
Insufficient credits to perform this task.
Name
404 - Not Found
Description
The preview task specified by preview_task_id was not found.
Name
429 - Too Many Requests
Description
You have exceeded your rate limit.

Request

POST

/openapi/v2/text-to-3d

# Basic refine task
curl https://api.meshy.ai/openapi/v2/text-to-3d \
  -H 'Authorization: Bearer ${YOUR_API_KEY}' \
  -H 'Content-Type: application/json' \
  -d '{
  "mode": "refine",
  "preview_task_id": "018a210d-8ba4-705c-b111-1f1776f7f578",
  "enable_pbr": true
}'

# Refine with auto-size and GLB format
curl https://api.meshy.ai/openapi/v2/text-to-3d \
  -H 'Authorization: Bearer ${YOUR_API_KEY}' \
  -H 'Content-Type: application/json' \
  -d '{
  "mode": "refine",
  "preview_task_id": "018a210d-8ba4-705c-b111-1f1776f7f578",
  "target_formats": ["glb"],
  "auto_size": true
}'

Response

{
  "result": "018a210d-8ba4-705c-b111-1f1776f7f578"
}

GET/openapi/v2/text-to-3d/:id

Retrieve a Text to 3D Task

This endpoint allows you to retrieve a Text to 3D task given a valid task id. Refer to The Text to 3D Task Object to see which properties are included with Text to 3D task object.

This endpoint works for both preview and refine tasks.

Parameters

Name
id
Type
path
Description
Unique identifier for the Text to 3D task to retrieve.

Returns

The response contains the Text to 3D task object. Check The Text to 3D Task Object section for details.

Examples

Mode	Sample Model
Preview
Refine

Request

GET

/openapi/v2/text-to-3d/018a210d-8ba4-705c-b111-1f1776f7f578

curl https://api.meshy.ai/openapi/v2/text-to-3d/018a210d-8ba4-705c-b111-1f1776f7f578 \
-H "Authorization: Bearer ${YOUR_API_KEY}"

Response

{
  "id": "018a210d-8ba4-705c-b111-1f1776f7f578",
  "type": "text-to-3d-preview",
  "model_urls": {
    "glb": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.glb?Expires=***",
    "fbx": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.fbx?Expires=***",
    "obj": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.obj?Expires=***",
    "mtl": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.mtl?Expires=***",
    "usdz": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.usdz?Expires=***",
    "stl": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.stl?Expires=***"
  },
  "thumbnail_url": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/preview.png?Expires=***",
  "prompt": "a monster mask",
  "progress": 100,
  "started_at": 1692771667037,
  "created_at": 1692771650657,
  "finished_at": 1692771669037,
  "status": "SUCCEEDED",
  "texture_urls": [
    {
      "base_color": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/texture_0.png?Expires=***"
    }
  ],
  "preceding_tasks": 0,
  "task_error": {
    "message": ""
  }
}

DELETE/openapi/v2/text-to-3d/:id

Delete a Text to 3D Task

This endpoint permanently deletes a Text to 3D task, including all associated models and data. This action is irreversible.

Path Parameters

Name
id
Type
path
Description
The ID of the Text to 3D task to delete.

Returns

Returns 200 OK on success.

Request

DELETE

/openapi/v2/text-to-3d/018a210d-8ba4-705c-b111-1f1776f7f578

curl --request DELETE \
  --url https://api.meshy.ai/openapi/v2/text-to-3d/018a210d-8ba4-705c-b111-1f1776f7f578 \
  -H "Authorization: Bearer ${YOUR_API_KEY}"

Response

// Returns 200 Ok on success.

GET/openapi/v2/text-to-3d

List Text to 3D Tasks

This endpoint allows you to retrieve a list of Text to 3D tasks.

Parameters

Name
page_num
Type
integer
default 1
Description
Page number for pagination.
Name
page_size
Type
integer
default 10
Description
Page size limit. Maximum allowed is 50 items.
Name
sort_by
Type
string
Description
Field to sort by.
Available values:
- +created_at: Sort by creation time in ascending order.
- -created_at: Sort by creation time in descending order.

Returns

Returns a paginated list of The Text to 3D Task Objects.

Request

GET

/openapi/v2/text-to-3d

curl https://api.meshy.ai/openapi/v2/text-to-3d?page_size=10 \
-H "Authorization: Bearer ${YOUR_API_KEY}"

Response

[
  {
    "id": "018a210d-8ba4-705c-b111-1f1776f7f578",
    "type": "text-to-3d-preview",
    "model_urls": {
      "glb": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.glb?Expires=***",
      "fbx": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.fbx?Expires=***",
      "obj": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.obj?Expires=***",
      "mtl": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.mtl?Expires=***",
      "usdz": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.usdz?Expires=***"
    },
    "thumbnail_url": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/preview.png?Expires=***",
    "prompt": "a monster mask",
    "progress": 100,
    "started_at": 1692771667037,
    "created_at": 1692771650657,
    "finished_at": 1692771669037,
    "status": "SUCCEEDED",
    "texture_urls": [
      {
        "base_color": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/texture_0.png?Expires=***"
      }
    ],
    "preceding_tasks": 0,
    "task_error": {
      "message": ""
    }
  }
]

GET/openapi/v2/text-to-3d/:id/stream

Stream a Text to 3D Task

This endpoint streams real-time updates for a Text to 3D task using Server-Sent Events (SSE).

Parameters

Name
id
Type
path
Description
Unique identifier for the Text to 3D task to stream.

Returns

Returns a stream of The Text to 3D Task Objects as Server-Sent Events.

For PENDING or IN_PROGRESS tasks, the response stream will only include necessary progress and status fields.

Request

GET

/openapi/v2/text-to-3d/018a210d-8ba4-705c-b111-1f1776f7f578/stream

curl -N https://api.meshy.ai/openapi/v2/text-to-3d/018a210d-8ba4-705c-b111-1f1776f7f578/stream \
-H "Authorization: Bearer ${YOUR_API_KEY}"

Response Stream

// Error event example
event: error
data: {
  "status_code": 404,
  "message": "Task not found"
}

// Message event examples illustrate task progress.
// For PENDING or IN_PROGRESS tasks, the response stream will not include all fields.
event: message
data: {
  "id": "018a210d-8ba4-705c-b111-1f1776f7f578",
  "progress": 0,
  "status": "PENDING"
}

event: message
data: {
  "id": "018a210d-8ba4-705c-b111-1f1776f7f578",
  "progress": 50,
  "status": "IN_PROGRESS"
}

event: message
data: {
"id": "018a210d-8ba4-705c-b111-1f1776f7f578",
"type": "text-to-3d-preview",
"progress": 100,
"status": "SUCCEEDED",
"created_at": 1692771650657,
"started_at": 1692771667037,
"finished_at": 1692771669037,
"model_urls": {
  "glb": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.glb?Expires=***"
},
"texture_urls": [
  {
    "base_color": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/texture_0.png?Expires=***",
    "metallic": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/texture_0_metallic.png?Expires=XXX",
    "normal": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/texture_0_normal.png?Expires=XXX",
    "roughness": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/texture_0_roughness.png?Expires=XXX"
  }
],
"preceding_tasks": 0,
"task_error": {
    "message": ""
  }
}

The Text to 3D Task Object

The Text to 3D Task object is a work unit that Meshy keeps track of to generate a 3D model from a text input. There are two stages of the Text to 3D API, preview and refine. Preview stage is for generating a mesh-only 3D model, and refine stage is for generating a textured 3D model based on the preview stage's result.

The object has the following properties:

Properties

Name
id
Type
string
Description
Unique identifier for the task. While we use a k-sortable UUID for task ids as the implementation detail, you should not make any assumptions about the format of the id.
Name
type
Type
string
Description
Type of the Text to 3D task. Possible values are text-to-3d-preview for preview stage tasks and text-to-3d-refine for refine stage tasks.
Name
model_urls
Type
object
Description
Downloadable URL to the textured 3D model file generated by Meshy. The property for a format will be omitted if the format is not generated instead of returning an empty string.
- Name
  glb
  Type
  string
  Description
  Downloadable URL to the GLB file.
- Name
  fbx
  Type
  string
  Description
  Downloadable URL to the FBX file.
- Name
  usdz
  Type
  string
  Description
  Downloadable URL to the USDZ file.
- Name
  obj
  Type
  string
  Description
  Downloadable URL to the OBJ file.
- Name
  mtl
  Type
  string
  Description
  Downloadable URL to the MTL file.
- Name
  stl
  Type
  string
  Description
  Downloadable URL to the STL file.
- Name
  3mf
  Type
  string
  Description
  Downloadable URL to the 3MF file. Only present when 3mf was requested via target_formats.
Name
prompt
Type
string
Description
This is unmodified prompt that was used to create the task.
Name
negative_prompt
Type
string
⚠ deprecated
Description
Maintained for backward compatibility. This field has no functional impact on generated models.
Name
art_style
Type
string
⚠ deprecated
Description
The unmodified art_style that was used to create the preview task. Not supported by Meshy-6.
Name
texture_richness
Type
string
⚠ deprecated
Description
Maintained for backward compatibility. This field has no functional impact on generated models.
Name
texture_prompt
Type
string
Description
Additional text prompt provided to guide the texturing process during the refine stage.
Name
texture_image_url
Type
string
Description
Downloadable URL to the texture image that was used to guide the texturing process.
Name
thumbnail_url
Type
string
Description
Downloadable URL to the thumbnail image of the model file.
Name
video_url
Type
string
⚠ deprecated
Description
Downloadable URL to the preview video. Will be removed in a future release.
Name
progress
Type
integer
Description
Progress of the task. If the task is not started yet, this property will be 0. Once the task has succeeded, this will become 100.
Name
started_at
Type
timestamp
Description
Timestamp of when the task was started, in milliseconds. If the task is not started yet, this property will be 0.
A timestamp represents the number of milliseconds elapsed since January 1, 1970 UTC, following the RFC 3339 standard. For example, Friday, September 1, 2023 12:00:00 PM GMT is represented as 1693569600000. This applies to all timestamps in Meshy API.
Name
created_at
Type
timestamp
Description
Timestamp of when the task was created, in milliseconds.
Name
finished_at
Type
timestamp
Description
Timestamp of when the task was finished, in milliseconds. If the task is not finished yet, this property will be 0.
Name
status
Type
string
Description
Status of the task. Possible values are one of PENDING, IN_PROGRESS, SUCCEEDED, FAILED, CANCELED.
Name
texture_urls
Type
array
Description
An array of texture URL objects that are generated from the task. Normally this only contains one texture URL object. Each texture URL has the following properties:
- Name
  base_color
  Type
  string
  Description
  Downloadable URL to the base color map image.
- Name
  metallic
  Type
  string
  Description
  Downloadable URL to the metallic map image.
  If the task is created with enable_pbr: false, this property will be omitted.
- Name
  normal
  Type
  string
  Description
  Downloadable URL to the normal map image.
  If the task is created with enable_pbr: false, this property will be omitted.
- Name
  roughness
  Type
  string
  Description
  Downloadable URL to the roughness map image.
  If the task is created with enable_pbr: false, this property will be omitted.
Name
preceding_tasks
Type
integer
Description
The count of preceding tasks.
The value of this field is meaningful only if the task status is PENDING.
Name
task_error
Type
object
Description
Error object that contains the error message if the task failed. The message property should be empty if the task succeeded. See Errors for more details.
- Name
  message
  Type
  string
  Description
  Detailed error message.

Example Text to 3D Task Object

{
  "id": "018a210d-8ba4-705c-b111-1f1776f7f578",
  "type": "text-to-3d-preview",
  "model_urls": {
    "glb": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.glb?Expires=***",
    "fbx": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.fbx?Expires=***",
    "usdz": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.usdz?Expires=***",
    "obj": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.obj?Expires=***",
    "mtl": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.mtl?Expires=***",
    "stl": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/model.stl?Expires=***"
  },
  "prompt": "a monster mask",
  "texture_prompt": "green slimy skin with scales and warts",
  "texture_image_url": "",
  "thumbnail_url": "https://assets.meshy.ai/***/tasks/018a210d-8ba4-705c-b111-1f1776f7f578/output/preview.png?Expires=***",
  "progress": 100,
  "seed": 1234,
  "started_at": 1692771667037,
  "created_at": 1692771650657,
  "finished_at": 1692771669037,
  "status": "SUCCEEDED",
  "texture_urls": [
    {
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