Developer API | Open3DAI

Quickstart

Create an API key

Sign in, open Account → API Keys → Create. Copy the plaintext value immediately; it is shown only once.

Make your first request

Generate a 3D model from text:

curl -X POST https://open3dai.com/api/v1/generations/text-to-3d \
  -H "Authorization: Bearer trf_live_xxx" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "type": "text_to_3d",
    "prompt": "A medieval sword with a golden hilt",
    "style": "realistic",
    "mode": "quality",
    "webhookUrl": "https://yourapp.com/hooks/open3dai"
  }'

# 201 Created
{
  "ok": true,
  "data": {
    "taskId": "gen_abc123",
    "provider": "procedural",
    "status": "processing",
    "creditsUsed": 20,
    "creditsRemaining": 980
  },
  "requestId": "req_1a2b3c4d"
}

Poll or wait for the webhook

Poll GET /generations/{taskId}. When status is completed, data.outputModelUrl points at the generated .glb.

curl https://open3dai.com/api/v1/generations/gen_abc123 \
  -H "Authorization: Bearer trf_live_xxx"

Response envelope

All responses follow one envelope, and every response carries an X-Request-ID header — include it when reporting an issue.

// 成功 (2xx)
{ "ok": true, "data": { … }, "requestId": "req_abc123" }

// 失败 (4xx / 5xx)
{
  "ok": false,
  "error": {
    "code": "snake_case_code",
    "message": "Human-readable message.",
    "requestId": "req_abc123",
    "details": { }
  }
}

Endpoints

Method	Path	Scopes	Description
`POST`	`/generations/text-to-3d`	`write`	Generate a 3D model from a natural-language prompt.
`POST`	`/generations/image-to-3d`	`write`	Turn one reference image (JPG/PNG/WEBP as a base64 data URL) into a textured 3D model.
`POST`	`/generations/multiview-to-3d`	`write`	Reconstruct a 3D model from at least 2 photos taken from different angles.
`GET`	`/generations/{taskId}`	`read`	Poll task status, output URL and credit usage.
`GET`	`/generations/{taskId}/model`	`read`	Download the generated model file directly.
`GET`	`/usage`	`read`	Check credit balance and rate-limit quota without spending credits.
`GET`	`/api/docs`	—	Interactive OpenAPI documentation.

Idempotency

Network retries are common. Without idempotency, a retried request could create a duplicate task and charge credits twice.

-H "Idempotency-Key: 8f14e45f-ceea-467a-9a1e-3b1c2d4e5f60"

Format: 1–255 characters from A–Z a–z 0–9 _ -. A random UUID v4 per client action is recommended.
The same key with an identical body replays the first response and does not charge again.
The same key with a different body returns 400 validation_failed.
A malformed key returns 400 invalid_idempotency_key.

Webhooks

Pass webhookUrl at creation and we POST the result when the job finishes, success or failure.

POST {your webhookUrl}
X-open3dai-Event: generation.completed   # or generation.failed
X-open3dai-Delivery: gen_abc123

{
  "taskId": "gen_abc123",
  "status": "completed",
  "outputModelUrl": "https://open3dai.com/api/v1/generations/gen_abc123/model",
  "thumbnailUrl": "https://open3dai.com/api/v1/generations/gen_abc123/thumbnail",
  "creditsUsed": 20,
  "errorCode": null,
  "timestamp": "2026-08-14T14:00:00Z"
}

Delivery guarantees. Failures (non-2xx or network errors) are retried up to 3 times after 1s, 5s and 15s. A 4xx other than 429 is a permanent failure and is not retried. Requests time out after 10 seconds, so acknowledge quickly and offload heavy work.

Rate limiting

Each API key gets 600 requests per hour in a rolling window.

Header	Meaning
`X-RateLimit-Limit`	Maximum requests in the window (600).
`X-RateLimit-Remaining`	Requests remaining in the current window.
`Retry-After`	Returned on 429 only: seconds until the window resets.
`X-Request-ID`	Unique per-request identifier for debugging.

Errors

Code	HTTP	Trigger
`missing_bearer_token`	401	No Authorization: Bearer … header was supplied.
`invalid_api_key`	401	The key is malformed, revoked or unknown.
`insufficient_scope`	403	The key lacks the scope for this endpoint.
`insufficient_credits`	402	Account balance is too low for this generation.
`validation_failed`	400	The body failed validation; see details.issues.
`invalid_idempotency_key`	400	The Idempotency-Key header is malformed.
`invalid_request_body`	400	The request body is not valid JSON.
`rate_limit_exceeded`	429	Hourly quota exhausted; see Retry-After.
`task_not_found`	404	No such task for this account.
`internal_error`	500	Unexpected server error; report the requestId.

Validation issue codes

prompt_required — empty prompt for text-to-3D.
prompt_too_long — prompt exceeds 2000 characters.
image_required — imageDataUrl is missing.
invalid_image_format — not a supported base64 data URL.
image_too_large — decoded image exceeds 20MB.
multiview_requires_two_images — fewer than 2 images for multiview.
invalid_mode — mode must be speed or quality.
invalid_style — style is not recognised.
idempotency_key_reused — same idempotency key with a different body.

Create an API key

Sign in, open Account → API Keys → Create. Copy the plaintext value immediately; it is shown only once.

Account Developer API → OpenAPI