What the connector does
The Mergr connector lets your AI assistant look things up in Mergr and answer from them, so you can ask "which PE firms would buy a $30M HVAC distributor in Texas?" or "who has owned Imperial Dade, and for how long?" and get an answer built from Mergr's deal, ownership and advisor records. Every answer links back to the matching mergr.com profile.
It is read-only. The connector can search and read Mergr; it cannot add, change or delete anything.
It works with Claude (web, desktop, Claude Code), ChatGPT, Codex, Perplexity, and any other assistant that supports the MCP standard. Setup for each is below; all of them use the same Mergr sign-in.
Before you start
You need a Mergr account with an active membership or trial. When the connector asks you to sign in, use the same email and password you use on mergr.com. If you do not have an account yet, the sign-in window has a link to start one.
Your AI assistant needs to support connectors (sometimes called apps, plugins or MCP servers). Most paid plans do; check your assistant's settings for a Connectors or Apps section.
ChatGPT
Mergr is in the ChatGPT app directory, so setup takes about a minute.
Open the Mergr app: chatgpt.com/plugins/plugin_asdk_app_6a6bb87aadf08191860f8d9d81c473e8
Click Connect. A Mergr sign-in window opens; sign in with your mergr.com email and password.
Start a new chat and ask a question. ChatGPT uses Mergr automatically when a question calls for it, or you can select Mergr from the tools menu in the message box.
If you prefer to add Mergr by hand (for example in a workspace where the directory is disabled), go to Settings, then Apps, enable Developer mode under Advanced, choose Create app, name it Mergr, enter the address https://mcp.mergr.com/chatgpt, and choose OAuth as the authentication method. Some workspaces need an admin to allow Developer mode.
Claude (web and desktop)
Mergr is in Claude's connector directory.
In Claude, open Settings, then Connectors, and choose Browse connectors.
Find Mergr and click Connect. Sign in with your mergr.com email and password.
In a new chat, open the tools menu (the sliders icon in the message box) and make sure Mergr is switched on.
To add it by hand instead, choose Add custom connector on the same Connectors page, enter the address https://mcp.mergr.com/connector, click Add, and sign in when prompted.
The first time Claude uses a Mergr tool it asks for permission. Choose Always allow to stop the prompts.
Claude Code and Codex
Claude Code. Run this once in your terminal, then type /mcp inside Claude Code and follow the sign-in link:
claude mcp add --transport http mergr https://mcp.mergr.com/connector
Codex. Add Mergr to ~/.codex/config.toml, then restart Codex and sign in when it asks:
[mcp_servers.mergr] url = "https://mcp.mergr.com/chatgpt"
Both clients fire many requests in parallel when they research. That is fine, but if you see a rate-limit message, let the agent pause for a minute rather than retrying immediately.
Perplexity and other assistants
Perplexity (Pro, Max and Enterprise plans): open Settings, then Connectors, choose Custom connector, select Remote, name it Mergr, enter https://mcp.mergr.com/connector, and sign in. In a new thread, select Mergr as a source.
Any other MCP client: add a remote server at https://mcp.mergr.com/connector with OAuth sign-in. There is nothing else to configure; the connector handles the sign-in flow itself.
Getting good answers
The connector works best when you ask it a question rather than ask for a list. It can search, rank, match and trace, and it is good at combining those steps into an answer.
Questions that work well:
Which PE firms would be the strongest buyers for a $30M revenue HVAC services company in Texas?
Who has owned Imperial Dade, and are they likely to sell?
Which sponsors are consolidating collision repair, and what have they bought?
Which investment banks advised the most software deals in the Midwest last year?
Match these company websites to Mergr and give me each one's owner and HQ.
Each answer carries links to the mergr.com profiles behind it, so you can open the full record, the ownership history, or the original press release when you need the detail.
Allowances and fair use
Every account has a daily allowance of connector requests and records, measured over a rolling 24 hours. It is sized for research sessions, including agents that fire many requests at once, and most members never notice it. Trial accounts have a smaller allowance than members; it expands automatically when a trial converts.
If you reach the limit, your assistant will tell you. The allowance frees up gradually over the following hours; there is no need to retry in the meantime, and repeated retries after a limit message can pause access for an hour.
The connector is for your own research and deal work. Bulk extraction, paging through the catalogue record by record, enumerating records by ID, and redistributing Mergr data are not permitted and lead to suspension of connector access. If you have a legitimate need for data at larger scale, email support@mergr.com and we will talk about the right arrangement.
If your subscription has lapsed
The connector follows your mergr.com subscription. While it is active, including after you cancel and until the paid period ends, the connector works. Once it ends, every request returns a message saying the subscription is no longer active.
You can re-activate without leaving your assistant: ask it to re-activate your Mergr subscription. It shows you the plan, the price and the card Mergr has on file, and charges that card only after you confirm. Access is restored on the next request.
You can also sign in at mergr.com/login; the re-activation window opens automatically. Receipts and invoices are at mergr.com/account/billing.
Troubleshooting
What you see | What to do |
"Your sign-in session expired" | The sign-in window stays open for an hour. Go back to your assistant and start the Mergr connection again. |
"Invalid email or password" | Use the credentials that work at mergr.com. If you signed up with a username rather than an email, enter the username. |
"Your Mergr access is no longer active" | Your mergr.com account is closed or your team's primary account is inactive. Email support@mergr.com. |
"Your Mergr access has been adjusted" | Connector access was suspended, usually for bulk extraction. Email support@mergr.com. |
A rate-limit or daily-limit message | Wait. The allowance frees up gradually over the following hours. Do not retry in a loop. |
Mergr does not appear in the tools menu | Start a new chat; connectors attach per conversation. In Claude, check that Mergr is switched on under the sliders icon. |
Tools worked, then stopped mid-session | Your sign-in token expired. Disconnect and reconnect Mergr in your assistant's connector settings. |
Still stuck? Email support@mergr.com with a screenshot of the message and which assistant you are using.
Privacy and security
Your Mergr password is only ever entered on the Mergr sign-in page at mcp.mergr.com and verified against mergr.com. It is never shared with the AI assistant. The assistant receives a token it can use to query Mergr on your behalf, which you can revoke at any time by disconnecting Mergr in the assistant's settings.
The connector is read-only, and nothing you type into your assistant is sent to Mergr except the requests the assistant makes to Mergr's tools. Mergr records which tools were called and when, for each account, to run the allowances above and to detect bulk extraction. Mergr does not see your conversation.