Native Gemini format

Gemini's native generateContent format interface, used for Gemini series models. Compatible with /v1beta/models/{model}:generateContent. Supports inlineData passing in base64-encoded images, PDFs, audio and video.

Compatible with Google Gemini API. Replace {model} in the path with the specific model ID, such as gemini-2.5-pro. For streaming output please call :streamGenerateContent.

POST /v1beta/models/{model}:generateContent https://api.covanexus.com

Authorization

Body

Authorization

Authorization BearerAuth

Authorization Bearer <token>

Use Bearer Token authentication: Authorization: Bearer $COVA_NEXUS_API_KEY. Also compatible with Gemini-style x-goog-api-key: $COVA_NEXUS_API_KEY request header.

in: header

Request Body

application/json

contents* array[object]

Conversation content list, each item contains role (user/model) and parts (such as [{"text":"..."}])

systemInstruction? object

System-level instructions (including parts)

generationConfig? object

Generate configuration, including temperature, topP, topK, maxOutputTokens, stopSequences, etc.

safetySettings? array[object]

Security filtering settings

tools? array[object]

List of available tools (function calls)

Response Body

status code	Type
200	application/json
400	application/json
429	application/json

curl -X POST \
  "https://api.covanexus.com/v1beta/models/gemini-2.5-pro:generateContent" \
  -H "Authorization: Bearer $COVA_NEXUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "contents": [
    {"role": "user", "parts": [{"text": "用一句话介绍你自己"}]}
  ]
}'

const res = await fetch(
  "https://api.covanexus.com/v1beta/models/gemini-2.5-pro:generateContent",
  {
    method: "POST",
    headers: {
      "Authorization": "Bearer $COVA_NEXUS_API_KEY",
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      contents: [
        { role: "user", parts: [{ text: "用一句话介绍你自己" }] }
      ]
    })
  }
);
const data = await res.json();
console.log(data.candidates[0].content.parts[0].text);

import requests

url = ("https://api.covanexus.com/v1beta/models/"
       "gemini-2.5-pro:generateContent")
resp = requests.post(
    url,
    headers={"Authorization": "Bearer $COVA_NEXUS_API_KEY"},
    json={
        "contents": [
            {"role": "user", "parts": [{"text": "用一句话介绍你自己"}]}
        ]
    }
)
print(resp.json()["candidates"][0]["content"]["parts"][0]["text"])

200

400

429

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [
          {
            "text": "string"
          }
        ]
      },
      "finishReason": "STOP",
      "index": 0,
      "safetyRatings": []
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 0,
    "candidatesTokenCount": 0,
    "totalTokenCount": 0
  }
}

BearerAuth