claude-opus-4-5-20251101 (Text To Text)
POST
/v1/chat/completionsAuthentication
- Sign up for an account
- Navigate to the API Keys section in your dashboard
- Generate a new API key (sk-xxxxx)
- Copy and securely store your API key
Initiate Request
curl --location 'https://api.maxtoken.io/v1/chat/completions'
--header 'Authorization: Bearer API_KEY'
--header 'Content-Type: application/json'
--data '{
"model": "claude-opus-4-5-20251101",
"messages": [
{
"role": "user",
"content": "Who are you?"
}
],
"max_tokens": 1024,
"stream": false
}'
const axios = require('axios');
let data = JSON.stringify({
"model": "claude-opus-4-5-20251101",
"messages": [
{
"role": "user",
"content": "Who are you?"
}
],
"max_tokens": 1024,
"stream": false
});
let config = {
method: 'post',
maxBodyLength: Infinity,
url: 'https://api.maxtoken.io/v1/chat/completions',
headers: {
'Authorization': 'Bearer API_KEY',
'Content-Type': 'application/json'
},
data : data
};
axios.request(config)
.then((response) => {
console.log(JSON.stringify(response.data));
})
.catch((error) => {
console.log(error);
});
import requests
import json
url = "https://api.maxtoken.io/v1/chat/completions"
payload = json.dumps({
"model": "claude-opus-4-5-20251101",
"messages": [
{
"role": "user",
"content": "Who are you?"
}
],
"max_tokens": 1024,
"stream": False
})
headers = {
'Authorization': 'Bearer API_KEY',
'Content-Type': 'application/json'
}
response = requests.request("POST", url, headers=headers, data=payload)
print(response.text)
package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.maxtoken.io/v1/chat/completions"
method := "POST"
payload := strings.NewReader(`{
"model": "claude-opus-4-5-20251101",
"messages": [
{
"role": "user",
"content": "Who are you?"
}
],
"max_tokens": 1024,
"stream": false
}`)
client := &http.Client {
}
req, err := http.NewRequest(method, url, payload)
if err != nil {
fmt.Println(err)
return
}
req.Header.Add("Authorization", "Bearer API_KEY")
req.Header.Add("Content-Type", "application/json")
res, err := client.Do(req)
if err != nil {
fmt.Println(err)
return
}
defer res.Body.Close()
body, err := io.ReadAll(res.Body)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(body))
}
Response Example
{
"id": "chatcmpl-abc123",
"object": "chat.completion",
"created": 1699896916,
"model": "claude-opus-4-6",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "# Document Analysis Summary ## Key Information: - Document Type: Technical API Documentation - Total Pages: 35 - Version: 2.0 ## Main Topics: 1. **Authentication**: The API uses Bearer token authentication with API keys 2. **Endpoints**: Contains 12 main API endpoints for different operations 3. **Rate Limiting**: Implements tiered rate limiting based on subscription level 4. **Error Handling**: Comprehensive error codes and handling strategies ## Key Sections: ### Getting Started - Quick start guide for new developers - Authentication setup instructions - First API call examples in multiple languages ### API Reference - Detailed endpoint documentation - Request/response formats - Parameter descriptions and constraints ### Best Practices - Recommended usage patterns - Performance optimization tips - Security considerations ### Code Examples - Python, JavaScript, Go, and cURL examples - Common use case implementations - Error handling patterns ## Important Notes: - All requests must include valid API key - Rate limits: 100 requests/minute for free tier, 1000/minute for premium - Support for both JSON and XML response formats - Webhook notifications available for asynchronous operations"
},
"finish_reason": "stop"
}
],
"usage": {
"prompt_tokens": 3500,
"completion_tokens": 285,
"total_tokens": 3785
}
}
Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
model | string | ✅ Yes | claude-opus-4-6 | The model to use for the request |
messages | array | ✅ Yes | [{"role": "user", "content": "What's the weather in NYC?"}] | Array of message objects for the conversation. Each message must have a role (user or assistant) and content. |
tools | array | ✅ Yes | - | Array of tool objects. For web search, must include the web_search tool configuration. |
stream | boolean | ❌ No | false | Whether to stream the response |
temperature | number | ❌ No | 1.0 | Amount of randomness injected into the response. Ranges from 0.0 to 1.0 |
top_p | number | ❌ No | 1.0 | Use nucleus sampling. Ranges from 0.0 to 1.0 |
max_tokens | integer | ❌ No | - | The maximum number of tokens to generate before stopping |
stop | array | ❌ No | - | Custom text sequences that will cause the model to stop generating |
Messages Array Structure
Each message object in the messages array should have the following structure:
| Field | Type | Required | Description |
|---|---|---|---|
role | string | ✅ Yes | The role of the message. Can be: user, assistant, or system |
content | array/string | ✅ Yes | The content of the message |
Content Array Structure (when content is an array)
| Field | Type | Required | Example | Description |
|---|---|---|---|---|
type | string | ✅ Yes | text | The type of content |
text | string | ✅ Yes | "What's the weather in NYC?" | The text content when type is text |
Tools Array Structure
For web search functionality, the tools array should contain a web search tool object:
| Field | Type | Required | Example | Description |
|---|---|---|---|---|
type | string | ✅ Yes | web_search | The type of tool. Must be web_search for web search |
max_uses | integer | ❌ No | 5 | Maximum number of times the web search tool can be used in a single request |
allowed_domains | array | ❌ No | ["example.com", "trusteddomain.org"] | Only include search results from these domains |
blocked_domains | array | ❌ No | ["untrustedsource.com"] | Never include search results from these domains |
Max Uses
The max_uses parameter limits the number of searches performed. If Claude attempts more searches than allowed, the web search result will be an error with the max_uses_exceeded error code.
Domain Filtering
When using domain filters:
- Domains should not include the HTTP/HTTPS scheme (use
example.cominstead ofhttps://example.com) - Subdomains are automatically included (
example.comcoversdocs.example.com) - Specific subdomains restrict results to only that subdomain (
docs.example.comreturns only results from that subdomain, not fromexample.comorapi.example.com) - Subpaths are supported (
example.com/blog) - You can use either
allowed_domainsorblocked_domains, but not both in the same request
Complete Tool Configuration Example
{
"type": "web_search_20250305",
"name": "web_search",
"max_uses": 5,
"allowed_domains": ["example.com", "trusteddomain.org"]
}
Error Codes
Common Error Codes
| Error Code | Error Name | Description |
|---|---|---|
| 401 | Unauthorized | API key is missing or invalid |
| 403 | Forbidden | Your API key doesn't have permission to access this resource, or insufficient balance for the requested operation |
| 429 | Too Many Requests | You've exceeded your rate limit |
| 500 | Internal server error | An internal server error occurred |
| 503 | Content policy violation | Content blocked due to safety concerns (actual status code is 400) |
