kbarbel640-del Seisoai
Base: https://seisoai.com
Endpoint: POST /api/gateway/invoke/{toolId}
Auth: X-API-Key: sk_live_... or x402 payment
Optimized for agentic, pay-per-job workflows. Each tool call is stateless—no sessions, no accounts required. Perfect for AI agents that need to generate media on demand.
Quick Start
POST https://seisoai.com/api/gateway/invoke/image.generate.flux-2
Content-Type: application/json
X-API-Key: sk_live_xxx
{"prompt": "a sunset over mountains"}
That's it. Just prompt and you get an image. One API call = one job = one payment.
Tools (50+)
Image Generation
| Task | toolId | Just need |
|---|---|---|
| Image (fast) | image.generate.flux-2 |
prompt |
| Image (cinematic) | image.generate.kling-image-v3 |
prompt |
| Image (aesthetic) | image.generate.grok-imagine |
prompt |
| Image (consistent) | image.generate.kling-image-o3 |
prompt |
| Image (360°) | image.generate.nano-banana-pro |
prompt |
| Edit image | image.generate.flux-pro-kontext |
prompt + image_url |
| Face swap | image.face-swap |
source_image_url + target_image_url |
| Remove BG | image.extract-layer |
image_url |
| Upscale | image.upscale |
image_url |
Video Generation
| Task | toolId | Just need |
|---|---|---|
| Video (fast) | video.generate.ltx-2 |
prompt |
| Video (quality) | video.generate.veo3 |
prompt |
| Video (cinematic) | video.generate.kling-3-pro-text |
prompt |
| Video (stylized) | video.generate.grok-imagine-text |
prompt |
| Animate image | video.generate.kling-3-pro-image |
prompt + image_url |
| Motion transfer | video.generate.dreamactor-v2 |
source_url + driver_url |
Audio & Speech
| Task | toolId | Just need |
|---|---|---|
| Music | music.generate |
prompt |
| Sound FX | audio.sfx |
prompt |
| TTS (voice clone) | audio.tts |
text + voice_url |
| TTS (high quality) | audio.tts.minimax-hd |
text |
| TTS (fast) | audio.tts.minimax-turbo |
text |
| Transcribe | audio.transcribe |
audio_url |
3D Generation
| Task | toolId | Just need |
|---|---|---|
| 3D from image | 3d.image-to-3d.hunyuan-pro |
image_url |
| 3D from text | 3d.text-to-3d.hunyuan-pro |
prompt |
| 3D (fast) | 3d.image-to-3d.hunyuan-rapid |
image_url |
Why Seisoai for Agents?
Pay-per-job: Each API call is billed independently. No subscriptions, no credits to manage.
Stateless: No sessions, no auth tokens to refresh. Just API key or x402 signature per request.
Smart defaults: Most tools only need prompt. We handle model selection, sizing, and optimization.
50+ tools: One endpoint, unified interface. Your agent doesn't need to integrate multiple APIs.
Fast routing: Automatic model selection based on task. Ask for "cinematic video" and we route to Kling 3.0 Pro.
Flexible Input
The API normalizes your input automatically:
| You send | We accept |
|---|---|
"imageUrl" |
→ image_url |
"sourceImageUrl" |
→ source_image_url |
"numImages" |
→ num_images |
"generateAudio" |
→ generate_audio |
"duration": "60" |
→ 60 (number) |
"duration": 60 |
→ "60s" (string, for video) |
camelCase or snake_case — both work.
Strings or numbers — we coerce to the right type.
Missing defaults — we apply them from the schema.
Common Options
Image: image_size (square, landscape_16_9, portrait_16_9), num_images (1-4)
Video: duration (4s, 6s, 8s, 10s), generate_audio (true/false)
Music: duration (10-180 seconds)
3D: format (glb, obj, fbx)
Response
{
"success": true,
"result": {
"images": [{"url": "https://..."}]
}
}
- Images:
result.images[0].url - Video:
result.video.url - Audio/Music:
result.audio_file.url - 3D:
result.model_mesh.url
Auth Options
API Key (easiest): Get at https://seisoai.com/settings/api-keys, add header X-API-Key: sk_live_...
x402 (agentic): No key needed. First call returns 402 with payment details, sign USDC on Base, retry with signature. Perfect for autonomous agents with wallets.
Pricing (Pay-per-job)
| Category | Cost |
|---|---|
| Image (standard) | ~$0.03-0.05 |
| Image (premium) | ~$0.04-0.065 |
| Video (per second) | ~$0.10-0.20 |
| Music (per minute) | ~$0.02 |
| TTS | ~$0.02-0.04 |
| 3D | ~$0.04-0.15 |
All prices include 30% markup over raw API costs. x402 payments are in USDC on Base.
Errors
| Code | Meaning |
|---|---|
| 400 | Missing required field (usually just prompt) |
| 402 | Add API key or sign payment |
| 500 | Retry |
Discovery
GET /api/gateway/tools
Returns all 50+ tools with JSON schemas. For agents, use this to discover available capabilities dynamically.