0n3
MCP servers · CRM · connector · GPT action

Connect ChatGPT to CRM

One line gives ChatGPT your CRM account as tools: 15 endpoints, contacts, pipelines, opportunities, called with your own connection. No key in the prompt, a receipt for every call, revoke ChatGPT's access alone any time.

Get the line for ChatGPTConnect CRM first

Three steps

  1. Create a free 0n3 account and connect CRM. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into ChatGPT. A custom connector in Developer mode, or an Action on a custom GPT from the OpenAPI spec.
  3. Ask ChatGPT: whoami. Then: "Create a contact in CRM".
Custom connector (needs Developer mode)
  1. Settings → Connectors (or Apps) → Advanced → Developer mode on
  2. Create → name 0n3 · MCP server URL https://0n3.app/mcp · Authentication: OAuth
  3. Finish the sign-in with your 0n account
  4. Enable the connector in a chat and ask: "whoami"

ChatGPT connectors cannot send a static header, so 0n3 signs you in through its OAuth door (dynamic client registration is on).

The line above carries a placeholder; 0n3.app/install mints a real key named for ChatGPT and fills it in.

What ChatGPT can then do in CRM

Contacts · Create, update, search, and manage contacts6
Create a contactPOST /contacts/
List contactsGET /contacts/
Search contactsPOST /contacts/search
Get a contactGET /contacts/{contactId}
Update a contactPUT /contacts/{contactId}
Delete a contactDELETE /contacts/{contactId}
Pipelines · Create and manage sales pipelines with stages2
Create a pipelinePOST /opportunities/pipelines
List pipelinesGET /opportunities/pipelines
Opportunities · Track deals and opportunities through pipeline stages1
Create an opportunityPOST /opportunities/
Tags · Create and assign tags for segmentation2
Create a tagPOST /locations/{locationId}/tags
List tagsGET /locations/{locationId}/tags
Custom values · Create and manage custom values2
Create a custom valuePOST /locations/{locationId}/customValues
List custom valuesGET /locations/{locationId}/customValues
Workflows · List and inspect automation workflows1
List workflowsGET /workflows/

All 15 CRM endpoints →

CRM in other AI clients

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ChatGPT with other apps

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