Model Context Protocol
Cited due diligence, inside
Works with
Why investors use MCP
Three things you get that you don't from web search.
How it works
Connect your AI assistant to the full Amass corpus.
Connect Amass MCP from Claude or ChatGPT and sign in once with your Amass plan. The assistant then queries 40M+ papers, 575K+ trials, and 170M+ patents on your behalf — nothing else to configure. Same access your plan gives you, inside the assistant you already use.
Install in Claude
Connect Amass to Claude. Start a DD query in minutes.
Four steps, ending in a one-time Amass sign-in. Requires Claude Pro, Max, Team, or Enterprise.
In Claude, open Settings → Connectors and click + → Add custom connector.

Name it “Amass” and paste this URL:
https://mcp.amass.tech/mcp
Click Add to save the connector.
Click Connect to authorize Amass.

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
Add the Evidence Scout skill — structured guidance for deal-quality research.
The skill teaches the assistant how to use Amass for investor and BD workflows — when to filter by journal quality, how to structure landscape scans, when to drill into a specific trial or target. Works in any assistant that supports the open SKILL.md format: Claude, Codex, GitHub Copilot, Gemini CLI.
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 pipeline queries the connector handles well, and the deeper assessments the skill is built to make easier.
See it in action
A pipeline 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.
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

chatgpt.com/appsPress Connect 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.
auth.amass.techPress Allow access 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.

ConfirmationToast appears in the top of the app 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.


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 →
One command in your terminal:
claude mcp add amass --transport http https://mcp.amass.tech/mcpOAuth opens in your browser on first use.
You'll be redirected to sign in with your Amass account. That's it — your existing plan's access applies through the MCP.
Option 1
CLI
codex mcp add amass --transport http https://mcp.amass.tech/mcpOption 2
Edit ~/.codex/config.toml
[mcp_servers.amass]
url = "https://mcp.amass.tech/mcp"Restart Codex after editing the config file.
You'll be redirected to sign in with your Amass account. That's it — your existing plan's access applies through the MCP.
Enterprise
Deploying Amass across a fund or pharma team?
Amass can be deployed inside Microsoft 365 Copilot as a declarative agent — sideloaded by your IT admin across Teams, Outlook, Word, and Excel. Same Amass MCP underneath, same plan-based auth. No separate licenses, no new API keys.
Talk to usFAQ
Honest answers.
Is this suitable for investment due diligence and BD?
Yes — that's the primary use case for this page. VC analysts and BD leads use Amass to run pipeline scans, target assessments, competitive landscapes, and FTO analyses directly in their AI assistant. Every output is cited to primary source, so findings can go into IC decks or deal memos without a separate verification step.
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.
Get started
Ready to run your first query?
Create your Amass account and connect the MCP in under two minutes.
Start free