MPPtempoquality 0.82

Grok-powered image editing via micropayments — $0.022 per edit, ~3s latency

Price
$0.022 / call
Protocol
mpp
Verified
no
Endpoint
https://stablestudio.dev/api/generate/grok/edit

What it does

This endpoint provides AI image editing using xAI's Grok model, accessed through StableStudio's pay-per-generation platform. You POST a prompt and one or more reference image URLs (previously uploaded via StableStudio's file upload flow) along with an optional aspect ratio, and receive a job ID. You then poll the job status endpoint until the edited image URL is returned. The endpoint costs $0.022 per edit and typically completes in about 3 seconds.

Payment is handled via the MPP protocol (Tempo method on pathUSD) or x402 (USDC on Base, network eip155:8453). No API keys or subscriptions are required — each call is paid individually with a signed crypto transaction. The flow is: (1) POST without payment to receive a 402 challenge with the exact amount, (2) sign the payment and re-POST with the PAYMENT-SIGNATURE header to get a pending job, (3) poll GET /api/jobs/{jobId} with a SIGN-IN-WITH-X wallet signature header until the result contains an imageUrl.

Grok edit supports 13 aspect ratios including standard (1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3), wide (2:1, 1:2), and ultra-wide (19.5:9, 9:19.5, 20:9, 9:20). Reference images must first be uploaded through StableStudio's three-step upload flow ($0.01) to obtain blob URLs. The endpoint is part of a broader StableStudio platform that also offers generation and editing via Nano Banana Pro, GPT Image 1.5, Flux 2 Pro, Grok Video, Seedance, Wan, Sora, and Veo models.

Capabilities

image-editinggrok-modelprompt-based-editingmulti-aspect-ratioultra-wide-aspect-ratiomicropaymentmpp-tempox402-usdcasync-job-pollingreference-image-input

Use cases

  • —Edit or modify existing images using natural language prompts via Grok
  • —Apply style changes, object additions/removals, or transformations to uploaded images
  • —Integrate low-cost image editing into agent workflows without API key management
  • —Build automated image processing pipelines with per-call micropayments

Fit

Best for

  • —Agents needing cheap, fast image edits ($0.022/call, ~3s)
  • —Workflows requiring ultra-wide or unusual aspect ratios (up to 20:9)
  • —Developers who want pay-per-use image editing without subscriptions or API keys

Not for

  • —Batch processing thousands of images (each requires a separate crypto payment)
  • —Use cases requiring fiat/credit-card payment (crypto wallet required)
  • —Real-time editing with sub-second latency (async job polling adds overhead)

Quick start

# 1. POST to get 402 challenge
curl -X POST https://stablestudio.dev/api/generate/grok/edit \
  -H 'Content-Type: application/json' \
  -d '{"prompt": "Add sunglasses to the person", "images": ["https://your-blob-url.vercel-storage.com/img.png"]}'
# Returns 402 with PAYMENT-REQUIRED header
# 2. Sign payment, re-POST with PAYMENT-SIGNATURE header
# 3. Poll GET /api/jobs/{jobId} with SIGN-IN-WITH-X header

Example

Request

{
  "images": [
    "https://example.blob.vercel-storage.com/uploads/abc/photo.png"
  ],
  "prompt": "Add sunglasses to the person in the photo",
  "aspect_ratio": "16:9"
}

Response

{
  "type": "grok-edit",
  "jobId": "job_abc123",
  "status": "pending",
  "success": true
}

Endpoint

URLhttps://stablestudio.dev/api/generate/grok/edit
Transporthttp
Protocolmpp
CurrencypathUSD

Quality

0.82/ 1.00

Full OpenAPI schema with detailed input/output definitions, clear pricing ($0.022), documented payment flow, and comprehensive guidance. The probe returned 405 (not 402) because the endpoint only accepts POST, not HEAD/GET — this is expected behavior, not a liveness issue. Deducted slightly because no direct 402 challenge was captured for this specific endpoint and no /docs page exists.

Warnings

  • —Probe returned 405 because HEAD/GET are not supported; endpoint requires POST method
  • —Reference images must be uploaded first via the paid /api/upload flow ($0.01) before editing
  • —No dedicated documentation page exists at /docs (returns 404)

Citations

Provenance

Indexed frommpp_dev
Enriched2026-04-19 16:48:22Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/HWKQYN