Anthropic Messages

import os
import anthropic

client = anthropic.Anthropic(
    base_url="https://api.routeway.ai",
    api_key=os.getenv("ROUTEWAY_API_KEY")
)

message = client.messages.create(
    model="claude-opus-4-5",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello, Claude!"}
    ]
)

print(message.content[0].text)

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  baseURL: "https://api.routeway.ai",
  apiKey: process.env.ROUTEWAY_API_KEY,
});

const message = await client.messages.create({
  model: "claude-opus-4-5",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello, Claude!" }],
});

console.log(message.content[0].text);

curl https://api.routeway.ai/v1/messages \
  -H "Authorization: Bearer $ROUTEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-4-5",
    "max_tokens": 1024,
    "messages": [
      {"role": "user", "content": "Hello, Claude!"}
    ]
  }'

{
  "id": "<string>",
  "model": "<string>",
  "content": [
    {
      "text": "<string>",
      "type": "text",
      "cache_control": {}
    }
  ],
  "stop_reason": "end_turn",
  "usage": {
    "input_tokens": 123,
    "output_tokens": 123,
    "cache_creation_input_tokens": 0,
    "cache_read_input_tokens": 0,
    "cache_creation": {
      "ephemeral_5m_input_tokens": 0,
      "ephemeral_1h_input_tokens": 0
    },
    "service_tier": "standard"
  },
  "type": "message",
  "role": "assistant",
  "stop_sequence": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

POST

messages

import os
import anthropic

client = anthropic.Anthropic(
    base_url="https://api.routeway.ai",
    api_key=os.getenv("ROUTEWAY_API_KEY")
)

message = client.messages.create(
    model="claude-opus-4-5",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello, Claude!"}
    ]
)

print(message.content[0].text)

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  baseURL: "https://api.routeway.ai",
  apiKey: process.env.ROUTEWAY_API_KEY,
});

const message = await client.messages.create({
  model: "claude-opus-4-5",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello, Claude!" }],
});

console.log(message.content[0].text);

curl https://api.routeway.ai/v1/messages \
  -H "Authorization: Bearer $ROUTEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-4-5",
    "max_tokens": 1024,
    "messages": [
      {"role": "user", "content": "Hello, Claude!"}
    ]
  }'

{
  "id": "<string>",
  "model": "<string>",
  "content": [
    {
      "text": "<string>",
      "type": "text",
      "cache_control": {}
    }
  ],
  "stop_reason": "end_turn",
  "usage": {
    "input_tokens": 123,
    "output_tokens": 123,
    "cache_creation_input_tokens": 0,
    "cache_read_input_tokens": 0,
    "cache_creation": {
      "ephemeral_5m_input_tokens": 0,
      "ephemeral_1h_input_tokens": 0
    },
    "service_tier": "standard"
  },
  "type": "message",
  "role": "assistant",
  "stop_sequence": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "status_code": 123,
    "id": "<string>",
    "param": "<string>",
    "code": "<string>",
    "tip": "<string>",
    "docs": "https://docs.routeway.ai",
    "support": "https://discord.gg/RjX2CpdPpd",
    "community": {}
  }
}

Send a message to Anthropic models using the native Anthropic Messages API format. Supports streaming and non-streaming responses.

Create Anthropic Message

To create an Anthropic message, use the following endpoint: POST /v1/messages

This endpoint is compatible with the Anthropic SDK (anthropic Python/Node.js package). Point your SDK at https://api.routeway.ai and replace your Anthropic API key with your Routeway key — no other changes needed.

Request Body

string

required

The Anthropic model ID to use (e.g. "claude-opus-4-5", "claude-sonnet-4-5"). See Models for the full list of supported Anthropic models.

array

required

An array of message objects forming the conversation. Each object must have a role ("user" or "assistant") and a content field (string or array of content blocks).

integer

required

The maximum number of tokens to generate before stopping.

string | array

A system prompt that provides context and instructions to the model. Can be a plain string or an array of content blocks.

number

Sampling temperature between 0 and 1. Higher values produce more varied outputs.

boolean

Whether to stream the response as Server-Sent Events (SSE).

array

Custom text sequences that will cause the model to stop generating.

array

A list of tools the model may call. Each tool must have a name, optional description, and an input_schema (JSON Schema object).

object

Controls tool use. Can be {"type": "auto"}, {"type": "any"}, or {"type": "tool", "name": "..."}.

number

Nucleus sampling parameter. Use temperature or top_p, but not both.

integer

Only sample from the top K options for each subsequent token.

import os
import anthropic

client = anthropic.Anthropic(
    base_url="https://api.routeway.ai",
    api_key=os.getenv("ROUTEWAY_API_KEY")
)

message = client.messages.create(
    model="claude-opus-4-5",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello, Claude!"}
    ]
)

print(message.content[0].text)

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  baseURL: "https://api.routeway.ai",
  apiKey: process.env.ROUTEWAY_API_KEY,
});

const message = await client.messages.create({
  model: "claude-opus-4-5",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Hello, Claude!" }],
});

console.log(message.content[0].text);

curl https://api.routeway.ai/v1/messages \
  -H "Authorization: Bearer $ROUTEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-4-5",
    "max_tokens": 1024,
    "messages": [
      {"role": "user", "content": "Hello, Claude!"}
    ]
  }'

Authorizations

Authorization

string

header

required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Headers

x-api-key

string

Body

application/json

model

string

required

max_tokens

integer

required

messages

Message · object[]

required

Show child attributes

system

stream

boolean | null

default:false

temperature

number | null

Required range: 0 <= x <= 2

top_p

number | null

Required range: 0 <= x <= 1

top_k

integer | null

Required range: x >= 0

stop_sequences

string[] | null

tools

ToolDefinition · object[] | null

Show child attributes

tool_choice

ToolChoiceAuto · object

ToolChoiceAuto
ToolChoiceNone
ToolChoiceAny
ToolChoiceSpecific

Show child attributes

disable_parallel_tool_use

boolean | null

thinking

ThinkingConfigEnabled · object

ThinkingConfigEnabled
ThinkingConfigDisabled
ThinkingConfigAdaptive

Show child attributes

metadata

Metadata · object | null

Response

Successful Response

string

required

model

string

required

content

(TextBlock · object | ImageBlock · object | DocumentBlock · object | ToolUseBlock · object | ToolResultBlock · object)[]

required

TextBlock
ImageBlock
DocumentBlock
ToolUseBlock
ToolResultBlock

Show child attributes

stop_reason

enum<string>

required

Available options:

end_turn,

max_tokens,

stop_sequence,

tool_use,

content_filter

usage

Usage · object

required

Show child attributes

type

string

default:message

Allowed value: "message"

role

string

default:assistant

Allowed value: "assistant"

stop_sequence

string | null

Overview

API Reference

Account

Create Anthropic Message

Request Body

Authorizations

Headers

Body

Response

​Create Anthropic Message

​Request Body

Authorizations

Headers

Body

Response

Create Anthropic Message

Request Body