Set up the 3RD connector for Claude

The 3RD connector brings your brand’s AI-search visibility data into Claude. Once connected, you can ask Claude about your visibility, citations, competitors, and playbook in plain language — and it answers using your live 3RD data.

Before you start

You need a 3RD account with access to at least one brand. The connector signs you in with the same account you use at app.get3rd.com and only ever shows data for the brands you already have access to.

If your account has no brands yet, the connector will connect but return no data.

Set up

Claude web & desktop
Claude Code (CLI)

Recommended. One-click sign-in — no API keys, no config files.

Open the connector settings in Claude

In Claude, go to Settings → Connectors and choose Add custom connector.

Add the 3RD server URL

Give it a name (for example, “3RD”) and paste this URL:

https://app.get3rd.com/api/mcp

Click Connect. A 3RD sign-in window opens — log in with your usual 3RD account.

Approve access

Review the access request and click Approve. You’re granting Claude read access to your 3RD profile and brand data — revocable any time (see below).

Start using it

The 3RD connector now appears in Claude. Enable it in a chat and ask away.

For the terminal, authenticate with an API key instead of the browser sign-in.

Create an API key in 3RD

Open app.get3rd.com, go to the MCP page in the sidebar, open the API Keys tab, and create a key.

Copy the key right away — you won’t be able to see it again.

Run this in your terminal, replacing YOUR_API_KEY with the key you just created:

claude mcp add --transport http third-law https://app.get3rd.com/api/mcp \
  --header "Authorization: Bearer YOUR_API_KEY"

Verify

claude mcp list

You should see third-law connected.

Try it

Once connected, ask Claude things like:

“How visible is my brand in AI answers this month?”
“Which competitors outrank me, and on which topics?”
“What are my top citation sources right now?”
“Where are my biggest content gaps?”
“What’s on my playbook this week?”

What the connector can access

Every tool is read-only — the connector reads your 3RD data and never changes it.

Area	Includes
Visibility & ranking	Visibility snapshot, breakdown & trend · Leaderboard & competitor ranking · KPI highlights
Citations & attribution	Citations & citation sources · First-seen dates · Attribution share
Conversations & prompts	Prompt coverage, history & responses · Fan-out queries & topic mentions · Sentiment distribution
Content & technical	Content gaps · Readability & Core Web Vitals · Technical & site audits
Strategy & actions	Playbook recommendations · Tasks · Outreach & opportunity radar
Setup & documents	Brands, competitors, markets & audiences · Monitored pages & brand profile · Search and fetch your documents

Manage or disconnect access

You can remove the connector at any time from Claude’s Settings → Connectors screen. Revoking access there immediately stops Claude from reading your 3RD data. For the CLI:

claude mcp remove third-law

Then revoke the API key from the API Keys tab in 3RD.

Troubleshooting

Claude connects but returns no data

Your 3RD account needs access to at least one brand. Open app.get3rd.com and confirm you can see a brand there, then try again.

"Invalid API key" in Claude Code

Make sure you replaced YOUR_API_KEY with a real key and that the key hasn’t been revoked or expired. Create a fresh key from the API Keys tab and re-run the command.

The connector doesn't appear after adding it

Fully quit and reopen Claude, then check Settings → Connectors. If sign-in didn’t complete, remove the connector and add it again.

Support

Need a hand? Reach out to your 3RD contact or email gethelp@get3rd.com.

​Before you start

​Set up

​Try it

​What the connector can access

​Manage or disconnect access

​Troubleshooting

​Support

Before you start

Set up

Try it

What the connector can access

Manage or disconnect access

Troubleshooting

Support