---
title: "Messages (Anthropic-compatible)"
method: POST
path: "/v1/messages"
---

# Messages (Anthropic-compatible)

`POST /v1/messages`

## Request

- Base URL: `https://api.jarvisclaw.ai`
- URL: `https://api.jarvisclaw.ai/v1/messages`
- Auth: HTTP x402

Anthropic-native Messages API. Drop-in endpoint for Claude SDKs, Claude Code, and Anthropic-compatible clients. Supports streaming, tool use, and vision.

## Request body

- object
  - `max_tokens` integer, required: Maximum tokens to generate (required by Anthropic API)
  - `messages` object[], required
    - `content` string, required
    - `role` 'system' | 'user' | 'assistant', required
  - `model` string, required: Model ID (e.g. claude-sonnet-4-6, claude-opus-4-1)
  - `stream` boolean: Enable streaming responses
  - `system` string: System prompt
  - `tools` unknown[]: Tool definitions for tool use
    - unknown

## Response `200`

Successful response

- object
  - `data` object

## Other responses

- `402`: Payment Required

---

[API](https://skmtc.dev/jarvisclaw/apis/jarvisclaw-api.md) · [All operations](https://skmtc.dev/jarvisclaw/apis/jarvisclaw-api/llms.txt) · [OpenAPI document](https://skmtc.dev/jarvisclaw/apis/jarvisclaw-api/revisions/2011c77f4e4f?raw)