---
title: "Try Amass free"
description: "Three ways to try Amass: the app in your browser, an API key for the REST API, or the MCP inside Claude, ChatGPT, Claude Code or Codex. Pick one and start."
url: https://amass.tech/try
---

# Try Amass free

Try Amass

# Try Amass free.

Pick your way in: the app in your browser, the REST API in your code, or the MCP in the AI tools you already use.

[

## The Amass app

No code. Ask a question, get a cited answer you can check.

Try free

](https://app.amass.tech/api/auth/sign-up)[

## The Amass API

Typed JSON from six \*Cores, every record cited. Build research into your product.

GET /api/v1/cores/trialcore/records?query=NCT04023552&limit=1

{ "data": \[{

"nctId": "NCT04023552",

"acronym": "Lp(a)HORIZON",

"phase": "PHASE3"

}\] }

Get an API key

](https://platform.amass.tech/api-keys)[

## Amass MCP

A remote server and one sign-in. Claude, ChatGPT, Claude Code and Codex query Amass with citations.

{
  "mcpServers": {
    "amass": {
      "type": "http",
      "url": "https://mcp.amass.tech/mcp"
    }
  }
}

Set up in two minutes

](https://amass.tech/mcp)

Not sure which one? [Book a demo](https://amass.tech/demo)