Portal Foundation

PORTAL CREATE

AI image and video generation with x402 micropayments. Pay per generation.

Portal Create

Open Application

What It Is

AI content generation platform with pay-per-use pricing via x402 micropayments. Generate images and videos using multiple AI models. Pay in USDC on Base. No subscriptions.

The Problem

AI generation platforms typically require:

Monthly subscriptions with unused credits
Prepaid credit systems
No transparency on per-generation costs

The Solution

Pay-per-generation via x402:

Connect wallet (USDC on Base required)
Select model and enter prompt
Sign payment authorization (no gas fees)
Content generates immediately

x402 uses EIP-3009 signatures for gas-free micropayments.

How It Works

Connect wallet
Select AI model
Enter text prompt
Review price
Sign payment authorization
Download generated content

x402 Payment Protocol

x402 extends HTTP 402 "Payment Required" for micropayments:

API returns 402 with payment requirements
Wallet creates EIP-3009 signature authorizing USDC transfer
CDP facilitator (Coinbase) verifies signature
Payment settles, content generates
No gas fees (signature, not transaction)

Available Models

Image Generation

FLUX (Schnell, Dev, Pro, Pro Ultra)
Stable Diffusion (SDXL, SD 1.5)
Recraft V3

Video Generation

Kling (1.0, 1.6, Pro, 2.0)
Google Veo 3
Seedance (Lite, Pro)

Utilities

Face restoration
2x upscaling
Background removal

Pricing

Image Generation

Model	Quality	Speed	Cost per Image
FLUX Schnell	Good	Fastest	$0.002
FLUX Dev	Great	Fast	$0.030
FLUX Pro	Excellent	Medium	$0.040
FLUX Pro 1.1	Superior	Medium	$0.055
FLUX Pro Ultra	Best	Slower	$0.080
SDXL	High	Fast	$0.004
SD 1.5	Classic	Fast	$0.012
Recraft V3	Design	Medium	$0.055

Video Generation

Model	Resolution	Duration	Cost per Video
Kling 1.0	720p	5s	$0.19
Kling 1.6	720p	5s	$0.32
Kling Pro	1080p	5s	$0.71
Kling 2.0	1080p	10s	$1.75
Veo 3	720p	5s	$3.13
Veo 3 Fast	720p	5s	$1.56
Seedance Lite	1080p	5s	$0.26
Seedance Pro	1080p	5s	$0.65

Utility Tools

Tool	Function	Cost
Face Restore	Enhance faces	$0.0015
Upscale 2x	Enlarge images	$0.0020
Background Removal	Remove backgrounds	$0.0040

Technology Stack

Next.js 15, React 18, TypeScript
RainbowKit, Wagmi, Viem for Web3
x402 protocol with EIP-3009
Prodia v2 API for generation
Base network, USDC payments

Development Status

Phase	Focus	Status
Phase 1	Image generation, x402	Live
Phase 2	Video generation, utilities	Complete
Phase 3	AI chat with micropayments	In Progress
Phase 4	Custom model fine-tuning	Planned
Phase 5	Multi-chain support	Planned