Elvion Developer API

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/developer/philadelphia/chat",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "message": "Write a 3-step plan to launch a coffee brand in Lagos.",
        "system_prompt": "You are a business advisor.",  # optional
        "history": []                                      # optional: [{"role": "user"/"assistant", "content": "..."}]
    }
)
print(r.json())  # {"reply": "...", "thinking": "...", "credits_charged": 3}

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/developer/bobby/chat",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "prompt": "Write a short sci-fi story about an offline robot.",
        "systemPrompt": None,  # optional
        "model": "fast"        # "fast" or "thinking" (default "thinking")
    }
)
print(r.json())

import requests

with open("photo.jpg", "rb") as f:
    r = requests.post(
        "https://web-production-9a18.up.railway.app/api/developer/vision/analyze",
        headers={"Authorization": "Bearer YOUR_API_KEY"},
        files={"file": f},
        data={"prompt": "Describe this in full detail."}  # optional
    )
print(r.json())  # {"analysis": "...", "thinking": "...", "credits_charged": 3}

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/developer/generate-image",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "prompt": "A futuristic city in the clouds, digital art",
        "use_minimax": True,      # False = V1 (12 cr flat), True = V2 (18 cr x n)
        "aspect_ratio": "16:9",   # V2 only
        "n": 3,                   # V2 only, 1-9
        "seed": None,             # V2 only
        "prompt_optimizer": True  # V2 only
    }
)
data = r.json()
images = data.get("images_b64") or [data.get("image_b64")]
print(len(images), "image(s) returned")

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/developer/philadelphia-pro/generate-text",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "prompt": "A golden eagle soaring over neon Lagos at night",
        "duration": 6,
        "resolution": "2K",
        "ratio": "16:9",
        "camera_motion": "drone",
        "audio_mood": "cinematic_score"
    }
)
print(r.json())  # {"status": "submitted", "task_id": "...", "credits_charged": N}

import requests

with open("start.jpg", "rb") as first, open("end.jpg", "rb") as last:
    r = requests.post(
        "https://web-production-9a18.up.railway.app/api/developer/philadelphia-pro/generate-image",
        headers={"Authorization": "Bearer YOUR_API_KEY"},
        files={"first_frame": first, "last_frame": last},  # last_frame optional
        data={"prompt": "Slow zoom out revealing the skyline", "duration": 6, "resolution": "2K"}
    )
print(r.json())

import requests

with open("char1.jpg", "rb") as c1, open("char2.jpg", "rb") as c2:
    r = requests.post(
        "https://web-production-9a18.up.railway.app/api/developer/philadelphia-pro/generate-reference",
        headers={"Authorization": "Bearer YOUR_API_KEY"},
        files=[("reference_images", c1), ("reference_images", c2)],  # up to 9
        data={
            "prompt": "A knight walks through a burning village",
            "reference_video_url": "https://example.com/clip.mp4",  # or reference_video_file upload
            "reference_video_seconds": 8,   # actual clip length -- improves billing accuracy
            "duration": 6,
            "resolution": "2K",
            "ratio": "adaptive"
        }
    )
print(r.json())

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/developer/philadelphia-pro/upscale",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"source_task_id": "your_succeeded_task_id", "resolution": "2K"}
)
print(r.json())

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/developer/philadelphia-fast/generate-text",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "prompt": "A skateboarder doing a kickflip at sunset",
        "duration": 6,         # 5-15, default 6 (4s not supported)
        "resolution": "768P",  # "480P" or "768P", no 2K
        "ratio": "9:16"
    }
)
print(r.json())

import requests

with open("start.jpg", "rb") as f:
    r = requests.post(
        "https://web-production-9a18.up.railway.app/api/developer/philadelphia-fast/generate-image",
        headers={"Authorization": "Bearer YOUR_API_KEY"},
        files={"first_frame": f},
        data={"prompt": "Camera pans right as the car drives off", "duration": 6, "resolution": "768P"}
    )
print(r.json())

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/developer/generate-video-from-text",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "prompt": "A lion walking across the savanna at dawn",
        "duration": 6,          # snaps to 6 or 10 server-side
        "resolution": "1080P"   # only honored if duration ends up as 6; 10s forces 768P
    }
)
print(r.json())

import requests

with open("frame.jpg", "rb") as f:
    r = requests.post(
        "https://web-production-9a18.up.railway.app/api/developer/generate-video-from-image",
        headers={"Authorization": "Bearer YOUR_API_KEY"},
        files={"file": f},
        data={"prompt": "The waves crash gently onto the shore", "duration": 6, "resolution": "768P"}
    )
print(r.json())

import requests

with open("a.jpg", "rb") as f1, open("b.jpg", "rb") as f2:
    r = requests.post(
        "https://web-production-9a18.up.railway.app/api/developer/generate-video-from-frames",
        headers={"Authorization": "Bearer YOUR_API_KEY"},
        files={"first_frame": f1, "last_frame": f2},
        data={"prompt": "Smooth morph between the two poses"}
    )
print(r.json())

import requests

with open("person.jpg", "rb") as f:
    r = requests.post(
        "https://web-production-9a18.up.railway.app/api/developer/generate-video-subject",
        headers={"Authorization": "Bearer YOUR_API_KEY"},
        files={"subject_photo": f},
        data={"prompt": "Walking through a busy market"}
    )
print(r.json())

import requests, time

task_id = "YOUR_TASK_ID"
url = f"https://web-production-9a18.up.railway.app/api/h3/status/{task_id}"

while True:
    r = requests.get(url)
    if r.status_code != 200:
        print("Failed:", r.json())
        break
    data = r.json()
    if data["status"] == "Success":
        print("Done:", data["url"])
        break
    elif data["status"] == "cancelled":
        print("Task was cancelled.")
        break
    time.sleep(5)

import requests

r = requests.get(
    "https://web-production-9a18.up.railway.app/api/video/status",
    params={"task_id": "YOUR_TASK_ID"}
)
print(r.json())

import requests

r = requests.post(
    "https://web-production-9a18.up.railway.app/api/h3/estimate-cost",
    json={
        "mode": "text",       # "text" | "image" | "reference"
        "model": "pro",       # "pro" or "fast"
        "duration": 6,
        "resolution": "2K",
        "image_count": 0,     # relevant for reference mode
        "ref_video_seconds": 0,
        "tier": "dev"         # "dev" to preview Developer API pricing
    }
)
print(r.json())  # {"credits": N, "naira": N, "tier": "dev", "model": "pro"}