Agnes AI API Guide 2026: Unified Endpoint, Auth & Code Examples

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This is part of the Agnes AI resource library. Return to the full Agnes AI review, or explore other sub-pages: Pricing, Alternatives, vs ChatGPT, vs Claude, Features, Free Plan.

One Unified Endpoint

Agnes AI uses a single endpoint, https://api.agnes.ai/v1/generate, for all modalities. You select text, image, or video via the modality parameter in the request body. The unified endpoint design means you use the same authentication, error handling, and response parsing code for all three modalities.

Authentication

Authenticate with a Bearer token in the Authorization header. The API key is obtained by signing up at the Agnes AI developer portal — no credit card required.

Text Generation Example

import requests

response = requests.post(
    "https://api.agnes.ai/v1/generate",
    headers={"Authorization": "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
    json={"modality": "text", "prompt": "Write a 200-word product description.", "max_tokens": 300, "temperature": 0.7}
)
print(response.json()["output"])

Image Generation Example

response = requests.post(
    "https://api.agnes.ai/v1/generate",
    headers={"Authorization": "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
    json={"modality": "image", "prompt": "A modern co-working space, photorealistic", "style": "photorealistic", "aspect_ratio": "16:9", "quality": "high"}
)
image_url = response.json()["output"]["url"]

Video Generation Example

response = requests.post(
    "https://api.agnes.ai/v1/generate",
    headers={"Authorization": "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
    json={"modality": "video", "prompt": "A 5-second logo animation, motion graphics", "duration": 5, "style": "motion_graphics"}
)
video_url = response.json()["output"]["url"]

Rate Limits & Retry

Agnes AI does not publish exact rate limits. Our testing suggests approximately 8-12 rapid requests before HTTP 429, then roughly 2-3 requests per minute sustained, with recovery after about 60 seconds of inactivity. Implement exponential backoff with jitter for production use.

Bottom Line

Agnes AI's unified endpoint design significantly simplifies multi-modal integration. See the full Agnes AI review for more.