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Amass

Model Context Protocol

Cited biomedical evidence, inside

Pull papers, trials, sponsors, and targets straight into Claude — citations attached, no copy-pasting, no leaving the chat. Also works in ChatGPT, Codex, Claude Code, and any MCP-compatible assistant.
Get started with:
or watch the 54-second demo
APIBuilding with the API instead? 39M papers and 575K trials via direct REST.

Works with

Claude
Claude Code
ChatGPT
Codex
Microsoft 365 CopilotOn request

Why MCP for evidence

Three things you get that you don't from web search.

Better than web search for evidence questions.

Structured filters — date, journal quality, retraction status, identifiers — consistently surface higher-signal results than open-web retrieval.

Agentic, not one-shot.

Assistants chain searches together — broad scan, filter, deep-dive on specific records — without the user having to drive each step.

Citations back to sources.

Every result links to its underlying record, so claims are auditable end-to-end.

How it works

Just sign in with your existing Amass account.

Connect Amass MCP from any supported assistant and sign in once with your existing Amass account. That's the whole setup — nothing else to configure. The assistant then queries Amass on your behalf, with the same access your plan already gives you.

See what you can create with the Amass MCP

Install in Claude

Connect Amass to Claude in under a minute.

Four steps, ending in a one-time Amass sign-in. Requires Claude Pro, Max, Team, or Enterprise.

Heads upRequires Claude Pro, Max, Team, or Enterprise. Custom connectors aren't available on Claude Free.

  1. In Claude, open Settings → Connectors and click + → Add custom connector.

    Claude Customize → Connectors panel with the + menu open showing Browse connectors and Add custom connector

  2. Name it “Amass” and paste this URL:

    https://mcp.amass.tech/mcp
    Add custom connector dialog filled in: Name = Amass, Remote MCP server URL = https://mcp.amass.tech/mcp

  3. Click Add to save the connector.

  4. Click Connect to authorize Amass.

    Claude Connectors panel with Amass listed under Not connected and a Connect button on the right-hand pane

You'll be redirected to sign in with your Amass account. That's it — your existing plan's access applies through the MCP.

The skill

Install the Biomedical Evidence Scout skill to get more out of Amass.

The skill is a small instruction pack that teaches the assistant how to use Amass well — when to filter by journal quality, how to structure landscape scans, when to drill into a specific record. Works in any assistant that supports the open SKILL.md format: Claude, Codex, GitHub Copilot, Gemini CLI.

Download .skill (Claude)Download .zip (everything else)
How do I install the skill file?

Double-click the .skill file on Mac to install it into Claude. For other tools, unzip the .zipinto the tool's skills directory:

  • Claude Code: ~/.claude/skills/
  • Codex: ~/.codex/skills/
  • Gemini CLI: ~/.gemini/skills/

Try it

Once it's connected, start asking.

Switch between baseline MCP queries the connector handles well, and the harder asks the skill is built to make easier.

Clinical / translational

Lp(a)HORIZON deep dive

Can you pull up Lp(a)HORIZON and tell me the key trial details, whether results are available, and any papers linked to it?

Returns: NCT ID, phase, sponsor, status, enrollment, countries, endpoints, posted results, and linked publications.

Target / mechanism

Recent TREM2 mechanisms

What are the most important recent TREM2 mechanism papers, and what do they suggest about TREM2 as an Alzheimer's target?

Returns: Ranked papers with journal, year, citations, PMID/DOI, model system, and core mechanistic claims.

Competitive / BD

RayzeBio active trials

Which RayzeBio radiopharmaceutical trials are currently active, and what are the main assets, indications, and timelines?

Returns: Active or recruiting trials, assets such as RYZ101/RYZ801/RYZ811/RYZ401, indications, phase, NCT IDs, enrollment, and completion dates.

See it in action

A real query, in Claude, with citations.

Other assistants

Also works in ChatGPT, Codex, and Claude Code.

Same connector URL, same one-time Amass sign-in. Pick your tool.

Heads upAvailable on ChatGPT Plus, Business, Enterprise, and Edu. Amass MCP is listed in the ChatGPT app store — one click to install.

  1. Install Amass MCP from the ChatGPT app store.

    Open the Amass listing in the ChatGPT app store and press Connect. No developer mode, no URLs to paste — the connector is added to your account in a single click.

    Open Amass in the ChatGPT app store

    Amass listing in the ChatGPT app store with the Connect button
    chatgpt.com/appsPress Connect

  2. Sign in to Amass and allow access.

    ChatGPT redirects to auth.amass.tech. Sign in with your existing Amass account, then press Allow access. Your Amass plan's entitlements apply through the connector — no API keys to manage.

    NoteYou'll see the Amass mark, ChatGPT's avatar, and the email you're signed in as. Confirm it's the right account before allowing access.
    Amass OAuth screen — sign in and allow access
    auth.amass.techPress Allow access

  3. Confirm Amass MCP is connected.

    You're returned to ChatGPT and a green “Amass MCP is now connected” toast appears at the top of the app.

    ChatGPT showing the Amass MCP connected toast
    ConfirmationToast appears in the top of the app

  4. Start a new chat and attach Amass MCP.

    In the composer, click the + button and select Amassfrom the menu. An Amass chip appears in the composer — Amass is now in the conversation's tool stack.

    • Open a new chat (or reuse an existing one).
    • Click the + in the composer.
    • Pick Amass from the dropdown.
    ChatGPT composer with the + menu open and Amass MCP listedChatGPT composer with the Amass MCP chip attached
    ComposerClick + → select Amass

You'll be redirected to sign in with your Amass account. That's it — your existing plan's access applies through the MCP.

If your tenant doesn't show the Amass MCP app yet, contact your admin or install via developer mode →

Enterprise

Deploying to a Microsoft 365 environment?

Amass can be deployed inside Microsoft 365 Copilot as a declarative agent, sideloaded by your IT admin and surfaced across Teams, Outlook, Word, and Excel. The same Amass MCP runs underneath, with the same Amass-plan-based auth — no separate licenses, no new API keys.

Talk to us

FAQ

Honest answers.

Which assistants is the Amass MCP available in?

Claude (Pro/Max/Team/Enterprise), ChatGPT (Plus/Business/Enterprise/Edu), Claude Code, Codex CLI. Microsoft 365 Copilot via enterprise deployment. Perplexity, Gemini CLI, and other MCP-compatible clients should also work — let us know if you try one of these.

Is the connector approved by Anthropic, OpenAI, or others?

Amass MCP is listed in the ChatGPT app store — one-click install from inside ChatGPT. Directory listings in Claude and other assistants are still in progress; for now those install as custom connectors, which works the same way functionally.

Do I need an API key?

No. The MCP authenticates via your existing Amass plan. You'll sign in once when you connect.

Does this work on ChatGPT Plus?

Yes. Amass MCP is available on ChatGPT Plus, Business, Enterprise, and Edu — install in one click from the ChatGPT app store. If your tenant restricts third-party app installs, a developer-mode fallback is available on the install page.

What data does Amass have access to?

Only the queries the assistant sends and the responses we return. The assistant runs on your provider's infrastructure, not ours.

My company uses Microsoft 365 — what are my options?

We can ship a declarative agent backed by the same Amass MCP for sideload by your IT admin. See the Enterprise section above and get in touch.