MPPtempoquality 0.88

Nano Banana Pro image generation via micropayments — up to 4K, ~10s, $0.13–$0.24 per image

Price
$0.039 / call
Protocol
mpp
Verified
no
Endpoint
https://stablestudio.dev/api/generate/nano-banana/generate

What it does

This endpoint generates images using the Nano Banana Pro model through StableStudio's pay-per-generation API. It accepts a text prompt and optional aspect ratio (10 options from 1:1 to 21:9) and resolution (1K, 2K, or 4K), returning a job ID that can be polled for the completed image URL. Pricing is $0.13–$0.24 per generation depending on resolution, with results typically delivered in ~10 seconds.

StableStudio is a broader platform offering multiple AI image and video models (GPT Image 1.5, Flux 2 Pro, Grok, Seedance, Wan 2.6, Sora 2, Veo 3.1) all accessible through the same payment flow. This specific endpoint covers Nano Banana Pro's generate operation. Payment is settled in USDC on Base (EIP-155:8453) via x402 or MPP (Tempo method). No API keys are required — authentication and payment happen through on-chain USDC authorization headers.

The workflow is: POST to the endpoint without payment to receive a 402 challenge with the exact USDC amount, sign the payment, re-POST with the PAYMENT-SIGNATURE header to get a pending job, then poll GET /api/jobs/{jobId} with a SIGN-IN-WITH-X wallet signature header until the job completes and returns an imageUrl. An edit endpoint at the same model path also supports image-to-image editing with up to 14 reference images. The full OpenAPI spec is available at /api/openapi.json and an MCP server is available via `npx -y agentcash@latest`.

Capabilities

text-to-imageimage-generationup-to-4k-resolutionaspect-ratio-controlusdc-paymentx402-protocolmpp-tempo-protocolasync-job-pollingno-api-keywallet-auth

Use cases

  • —Generate high-resolution images from text prompts with per-call micropayments
  • —Programmatic image creation for apps/agents without subscription commitments
  • —Produce images up to 4K resolution in various aspect ratios for marketing or content
  • —Agent-driven image generation using on-chain USDC payments

Fit

Best for

  • —Agents or apps needing on-demand image generation without API key management
  • —Pay-per-use image generation with no subscription
  • —High-resolution (up to 4K) text-to-image with flexible aspect ratios
  • —Crypto-native workflows settling in USDC on Base

Not for

  • —Users without an EVM wallet or USDC on Base
  • —Bulk batch image generation requiring sub-second latency
  • —Image editing workflows (use the /edit endpoint instead)

Quick start

# 1. Get payment challenge
curl -X POST https://stablestudio.dev/api/generate/nano-banana-pro/generate \
  -H 'Content-Type: application/json' \
  -d '{"prompt": "A cat astronaut floating in space"}'
# Returns 402 with PAYMENT-REQUIRED header (base64 JSON)
# 2. Decode challenge, sign USDC authorization, re-POST with PAYMENT-SIGNATURE header
# 3. Poll GET /api/jobs/{jobId} with SIGN-IN-WITH-X header until complete

Example

Request

{
  "prompt": "A cat astronaut floating in space, photorealistic",
  "imageSize": "2K",
  "aspectRatio": "16:9"
}

Response

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

Endpoint

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

Quality

0.88/ 1.00

Full OpenAPI 3.1 schema with detailed input/output definitions, comprehensive guidance docs, clear pricing, and live 402 challenge flow documented. The probe returned 405 on HEAD/GET (expected since this is a POST-only endpoint), so the endpoint is not confirmed broken. Deducting slightly because the probe didn't capture an actual 402 on POST, and no dedicated docs page exists (404 on /docs).

Warnings

  • —Probe used HEAD/GET which returned 405; this is a POST-only endpoint so liveness is not confirmed by probe but is expected to work based on OpenAPI spec
  • —No dedicated documentation page at /docs (returns 404); all docs are embedded in the OpenAPI x-guidance field
  • —The listing URL path is /nano-banana/generate but the OpenAPI spec documents /nano-banana-pro/generate — verify the correct model slug

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/84BYjy