VELIN Image API: Developer Integration Kit

VELIN (72agi.com) is a pay-per-image AI image generation API. One API key, one simple async endpoint, and seven models, including Nano Banana Pro, Nano Banana 2 and GPT Image 2 / 2.5. You pay per image and the price is the same at 1K, 2K and 4K.

• From about $0.037 per image, with no subscription
• Failed generations are not charged. Credits are refunded automatically.
• Up to 14 reference images per request (image-to-image / style / composition)
• Capacity up to 100,000 images/day. Volume pricing is negotiable.
• Get started with a small top-up: message @ayan8866e on Telegram
• Support / volume deals: Telegram @ayan8866e

.
├── README.md                        ← you are here
├── curl.sh / generate.py / generate.mjs   ← full-featured CLI examples (retries, refs, backoff)
├── minimal/                         ← the smallest working client: velin_min.py / .mjs / .sh
├── examples/batch_product_shots.py  ← batch + reference images + resumable manifest
├── n8n-velin-image-workflow.json    ← importable n8n workflow (submit + poll + download)
├── sillytavern/                     ← local adapter + setup guide for SillyTavern
├── comfyui/ComfyUI-VELIN/           ← ComfyUI custom node (draft)
├── tests/mock_velin.py              ← offline mock of the API used to test the examples
├── TESTING.md                       ← exactly what was tested, and against what
└── SILLYTAVERN.md                   ← why SillyTavern needs an adapter

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New: music (Suno 5.5 / 5), MCP server, gpt-image-1 migration

• Music: POST /api/music with Suno 5.5 or Suno 5, ¥0.80 (≈ $0.12) per generation, 2 tracks each. Examples: examples/music/suno.py, examples/music/suno.mjs. Guide: https://72agi.com/suno-api.html
• MCP server for Claude Desktop / Cursor / Cline: mcp/ (zero dependencies, image + music tools).
• gpt-image-1 shuts down 2026-10-23 (per OpenAI): MIGRATE-FROM-GPT-IMAGE-1.md.
• AI agents: skill file https://72agi.com/velin-agent-skill.txt

Quickstart

1. Get your API key

1. Sign in at https://72agi.com.
2. Open My account (https://72agi.com/me.html) and press Copy next to your key.
3. Store it in an environment variable:

export VELIN_API_KEY="paste-your-key-here"

⚠️ Treat the key like a password. It calls the API and signs in to your account. Keep it on your server and never put it in front-end code or URLs. If it leaks, press replace on My account and the old key stops working immediately.

2. Authenticate

Every request sends one header:

Authorization: Bearer 

Base URL: https://72agi.com