MPPtempoquality 0.88

Pay-per-image generation via Nano Banana Pro with up to 4K resolution, settled in USDC on Base.

Price
per_call
Protocol
mpp
Verified
no
Endpoint
https://stablestudio.dev/api/generate/nano-banana-pro/generate

What it does

This endpoint generates images using the Nano Banana Pro model via StableStudio's pay-per-generation API. It accepts a text prompt and optional parameters for aspect ratio (10 options from 1:1 to 21:9) and resolution (1K, 2K, or 4K). Pricing is dynamic, ranging from $0.13 to $0.24 per generation depending on resolution, with typical generation time around 10 seconds. Payment is settled in USDC on Base (EIP-155:8453) using the x402/MPP protocol — no API keys or subscriptions required.

The workflow is asynchronous: POST the generation request with a signed USDC payment header, receive a jobId with status "pending", then poll the job status endpoint (GET /api/jobs/{jobId}) using a SIGN-IN-WITH-X wallet signature until the job completes and returns an imageUrl. StableStudio also offers a companion edit endpoint at /api/generate/nano-banana-pro/edit that accepts 1–14 reference images for guided editing.

StableStudio is part of a broader platform offering multiple image models (GPT Image 1.5, Flux 2 Pro, Grok) and video models (Sora 2, Veo 3.1, Seedance, Wan 2.6, Grok Video). The Nano Banana Pro generate endpoint is the recommended default for image tasks due to its quality-to-cost ratio. An MCP server is available via `npx -y agentcash@latest` for agent integration.

Capabilities

text-to-imageup-to-4k-resolutionmultiple-aspect-ratiosdynamic-pricingusdc-on-base-paymentasync-job-pollingwallet-authno-api-keympp-protocolx402-protocol

Use cases

  • —Generating high-resolution images from text prompts for creative projects
  • —Automated image creation in agent workflows without API key management
  • —On-demand 4K asset generation for design or marketing pipelines
  • —Programmatic image generation with per-call crypto micropayments
  • —Batch image creation across multiple aspect ratios for social media

Fit

Best for

  • —Agents or apps needing pay-per-call image generation without subscriptions
  • —Developers wanting crypto-native (USDC on Base) payment for AI image APIs
  • —Use cases requiring up to 4K resolution with flexible aspect ratios
  • —Quick, low-cost image generation (~$0.13–$0.24 per image, ~10s latency)

Not for

  • —Real-time or sub-second image generation (async polling adds latency)
  • —Users without a crypto wallet (requires USDC on Base for payment)
  • —Image editing with reference images (use the /edit endpoint instead)

Quick start

# 1. POST without payment to get 402 challenge
curl -X POST https://stablestudio.dev/api/generate/nano-banana-pro/generate \
  -H 'Content-Type: application/json' \
  -d '{"prompt": "A sunset over mountains", "aspectRatio": "16:9", "imageSize": "2K"}'
# Returns 402 with PAYMENT-REQUIRED header (base64 JSON)
# 2. Decode challenge, sign USDC payment, re-POST with PAYMENT-SIGNATURE header
# 3. Poll GET /api/jobs/{jobId} with SIGN-IN-WITH-X header until complete

Example

Request

{
  "prompt": "A sunset over mountains with golden light",
  "imageSize": "2K",
  "aspectRatio": "16:9"
}

Response

{
  "type": "nano-banana-pro",
  "jobId": "abc123-def456",
  "status": "pending",
  "success": true
}

Endpoint

URLhttps://stablestudio.dev/api/generate/nano-banana-pro/generate
Transporthttp
Protocolmpp
CurrencypathUSD

Quality

0.88/ 1.00

Full OpenAPI 3.1 schema with detailed input/output definitions, clear pricing in the guidance docs, and a live 402 MPP challenge confirmed (the endpoint is POST-only, so HEAD/GET returning 405 is expected). Docs pages return 404 but the OpenAPI x-guidance field provides comprehensive documentation. Minor deduction for no standalone docs site and reliance on inline guidance.

Warnings

  • —Probe used HEAD/GET which returned 405; the endpoint is POST-only and is expected to be live (confirmed by OpenAPI spec and payment protocol details)
  • —No standalone documentation pages found (/docs, /pricing, /api all return 404); all docs are embedded in the OpenAPI x-guidance field
  • —Dynamic pricing means the actual charge varies by resolution/aspect ratio; the 402 challenge at call time determines the exact amount

Citations

Provenance

Indexed frommpp_dev
Enriched2026-04-19 16:55:14Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/QDDUX2