Stable Diffusion XL 0.9 Serverless API
The SDXL model is the official upgrade to the v1.5 model. The model is released as open-source software.
POST /v2/sdxl-txt2img · submit + poll 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3import segmind
4
5# Async (v2): submit to the queue and block until COMPLETED.
6# run() returns the final result dict (600s deadline, 1.0s poll by default).
7result = segmind.run(
8 "sdxl-txt2img",
9 prompt="a beautiful stack of rocks sitting on top of a beach, a picture, red black white golden colors, chakras, packshot, stock photo",
10 negative_prompt="asian, african, makeup, fake, cgi, 3d, doll, art, anime, cartoon, illustration, painting, digital, blur, sepia, b&w, unnatural, unreal, photoshop, filter, airbrush, poor anatomy, lr",
11 samples=1,
12 scheduler="dpmpp_sde_ancestral",
13 num_inference_steps=25,
14 guidance_scale=8,
15 strength=1,
16 seed=2784983004,
17 img_width=768,
18 img_height=768,
19 base64=False,
20)
21print(result["status"]) # COMPLETED
22print(result.get("output")) # model output (e.g. media URL)
23print(result["metrics"]["inference_time"]) # server compute seconds
24
25# --- Or submit + poll manually (track request_id, control the cadence) ---
26from segmind import SegmindClient, InferenceFailed, InferenceTimeout
27
28client = SegmindClient() # reads SEGMIND_API_KEY
29payload = {
30 "prompt": "a beautiful stack of rocks sitting on top of a beach, a picture, red black white golden colors, chakras, packshot, stock photo",
31 "negative_prompt": "asian, african, makeup, fake, cgi, 3d, doll, art, anime, cartoon, illustration, painting, digital, blur, sepia, b&w, unnatural, unreal, photoshop, filter, airbrush, poor anatomy, lr",
32 "samples": 1,
33 "scheduler": "dpmpp_sde_ancestral",
34 "num_inference_steps": 25,
35 "guidance_scale": 8,
36 "strength": 1,
37 "seed": 2784983004,
38 "img_width": 768,
39 "img_height": 768,
40 "base64": False,
41}
42job = client.submit_async("sdxl-txt2img", **payload)
43print(job.request_id) # available immediately
44try:
45 result = job.wait(timeout=600, interval=1.0)
46except InferenceTimeout as e:
47 print("still running:", e.request_id)
48except InferenceFailed as e:
49 print("failed:", e.detail) 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3import segmind
4
5# Async (v2): submit to the queue and block until COMPLETED.
6# run() returns the final result dict (600s deadline, 1.0s poll by default).
7result = segmind.run(
8 "sdxl-txt2img",
9 prompt="a beautiful stack of rocks sitting on top of a beach, a picture, red black white golden colors, chakras, packshot, stock photo",
10 negative_prompt="asian, african, makeup, fake, cgi, 3d, doll, art, anime, cartoon, illustration, painting, digital, blur, sepia, b&w, unnatural, unreal, photoshop, filter, airbrush, poor anatomy, lr",
11 samples=1,
12 scheduler="dpmpp_sde_ancestral",
13 num_inference_steps=25,
14 guidance_scale=8,
15 strength=1,
16 seed=2784983004,
17 img_width=768,
18 img_height=768,
19 base64=False,
20)
21print(result["status"]) # COMPLETED
22print(result.get("output")) # model output (e.g. media URL)
23print(result["metrics"]["inference_time"]) # server compute seconds
24
25# --- Or submit + poll manually (track request_id, control the cadence) ---
26from segmind import SegmindClient, InferenceFailed, InferenceTimeout
27
28client = SegmindClient() # reads SEGMIND_API_KEY
29payload = {
30 "prompt": "a beautiful stack of rocks sitting on top of a beach, a picture, red black white golden colors, chakras, packshot, stock photo",
31 "negative_prompt": "asian, african, makeup, fake, cgi, 3d, doll, art, anime, cartoon, illustration, painting, digital, blur, sepia, b&w, unnatural, unreal, photoshop, filter, airbrush, poor anatomy, lr",
32 "samples": 1,
33 "scheduler": "dpmpp_sde_ancestral",
34 "num_inference_steps": 25,
35 "guidance_scale": 8,
36 "strength": 1,
37 "seed": 2784983004,
38 "img_width": 768,
39 "img_height": 768,
40 "base64": False,
41}
42job = client.submit_async("sdxl-txt2img", **payload)
43print(job.request_id) # available immediately
44try:
45 result = job.wait(timeout=600, interval=1.0)
46except InferenceTimeout as e:
47 print("still running:", e.request_id)
48except InferenceFailed as e:
49 print("failed:", e.detail)API Endpoint
https://api.segmind.com/v1/sdxl-txt2imgParameters
base64optionalbooleanBase64 encoding of the output image.
falseguidance_scaleoptionalnumberScale for classifier-free guidance
img_heightoptionalintegerImage resolution.
img_widthoptionalintegerImage resolution.
negative_promptoptionalstringPrompts to exclude, eg. 'bad anatomy, bad hands, missing fingers'
num_inference_stepsoptionalintegerNumber of denoising steps.
promptoptionalstringPrompt to render
samplesoptionalintegerNumber of samples to generate.
1Range: 1 - 10scheduleroptionalstringType of scheduler.
"dpmpp_sde_ancestral"seedoptionalintegerSeed for image generation.
strengthoptionalnumberHow much to transform the reference image
Response Type
Returns: Text/JSON
Asynchronous requests (v2)
Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.
- 1
POST /v2/sdxl-txt2imgSubmit — returns request_id, status_url, response_url
- 2
GET /v2/requests/{id}/statusPoll — until COMPLETED or FAILED
- 3
GET /v2/requests/{id}Result — final response body
Status states
- A FAILED request is served as HTTP 422 — the body still carries the error detail.
- An unknown or expired request_id returns HTTP 404.
- Results are retained for 1 hour, then expire.
- Content / RAI blocks surface as FAILED, not a separate state.
- Track completion by polling the status endpoint.
Common Error Codes
The API returns standard HTTP status codes. Detailed error messages are provided in the response body.
Bad Request
Invalid parameters or request format
Unauthorized
Missing or invalid API key
Forbidden
Insufficient permissions
Not Found
Model or endpoint not found
Insufficient Credits
Not enough credits to process request
Rate Limited
Too many requests
Server Error
Internal server error
Bad Gateway
Service temporarily unavailable
Timeout
Request timed out