ChatGPT + MyCase: What the Integration Can (and Can't) Do in 2026
No — there’s no official ChatGPT connector for MyCase and no official MyCase MCP server, so there’s no click-to-add path today. MyCase isn’t in ChatGPT’s built-in connector set (which is office and storage apps), and MyCase hasn’t shipped a hosted MCP endpoint the way some vendors have. The only real way to reach your firm’s data from ChatGPT is to point ChatGPT’s Developer Mode at a custom MCP server built on the MyCase Open API — the public REST API MyCase released in November 2023, which uses OAuth 2.0 and is available only on the Advanced tier. And whatever you build, it runs inside a session you’re driving — between chats, nothing is watching your matters.
Here’s what’s actually possible, how to wire it up, where it stops, and what to use if you want MyCase-adjacent work that runs on its own.
What ChatGPT can actually do with MyCase
Nothing out of the box. There is no MyCase app in the ChatGPT connectors directory, so a plain ChatGPT account can’t see your cases, contacts, documents, or calendar. What you can do takes engineering:
- Build a custom MCP server on the Open API. MyCase’s public REST API exposes cases, contacts, documents, and related data, with OAuth 2.0 auth. Wrap those endpoints in an MCP server and ChatGPT’s Developer Mode can call them as tools — “list open matters for this client,” “pull the last three documents on the Rivera matter.”
- Read and write, if you build for it. The Open API documents both retrieval (for example, get all cases for a client) and creation (for example, create a document for a case). Expose write tools in your MCP server and ChatGPT can add a document or update a record — scoped to what the connected MyCase login can do.
- Draft with matter context pasted in. Even with no connector, lawyers routinely paste a fact pattern or a document into ChatGPT and ask it to summarize, outline, or draft. That’s manual copy-paste, not an integration, and it means client data leaves MyCase’s walls — mind your confidentiality obligations.
One point of confusion worth clearing up: MyCase IQ is not ChatGPT. MyCase’s native AI features (summarizing, drafting, natural-language search inside your workspace) run on OpenAI’s API platform under the hood, but that’s MyCase’s own product — it doesn’t mean the ChatGPT app you use is connected to your firm’s MyCase account.
How to set it up (what exists instead of a connector)
Since there’s no official connector, this is a developer project:
- Be on a MyCase Advanced subscription — the Open API is Advanced-tier only — and request API access, then register your app for OAuth 2.0.
- Build (or host) an MCP server that wraps the MyCase endpoints you need and handles the OAuth flow. See OpenAI’s guide to building MCP servers for ChatGPT.
- In ChatGPT, enable Developer Mode (available on Pro, Team, Enterprise, and Edu plans) and add your server as a custom connector in the Apps/Connectors settings.
- Test with something read-only: “list my open matters and the next deadline on each.”
If you don’t want to build and maintain a server, the practical alternative is to use the Open API directly from your own code, or reach for a tool that already integrates with MyCase.
The limits that matter
- No official connector means no supported path. Anything you stand up is your own MCP server on the API — you own the auth, the hosting, the upkeep, and the security review. There’s no MyCase-blessed “add to ChatGPT” button to fall back on.
- It doesn’t run on triggers. MyCase’s API supports webhooks, but ChatGPT can’t subscribe to them — it only touches MyCase when you prompt it. A new client intake, a filing deadline, a document upload: none of it makes ChatGPT do anything on its own.
- Every action needs a driver. Even with write tools wired up, drafting a document or updating a matter by chat is still a person running a session. The Monday deadline digest, the post-intake welcome email — they repeat only if someone re-asks.
- Session-bound, even in agent mode. ChatGPT’s longer agent runs are still manually started and metered against your plan — an errand, not a standing watch on your caseload.
- The follow-through stops at the chat. ChatGPT can draft the client update or the intake reply; it won’t send it from your mailbox, log the time entry, and update the matter as one motion.
If you want MyCase-adjacent work that runs on its own: Carly
Legal work is trigger-shaped: intakes arrive at all hours, deadlines land on the calendar, documents get filed, invoices go unpaid. The moment you want the response to happen on the event — every new lead acknowledged and routed within minutes, a reminder when a matter deadline approaches, the partner briefed the morning of a hearing — you’ve crossed past what a chat session is for.
That’s where Carly fits. MyCase is a native Carly integration, and Carly is an AI executive assistant built to act on triggers, not just answer in a chat:
- Fires on events and schedules, 24/7, in the cloud. When a new matter or contact appears in MyCase, Carly can summarize it, email the client an acknowledgment, and post the intake to your team channel — while your laptop is closed.
- Reads and writes MyCase natively. Update matters, create documents, log activity, manage tasks — no custom MCP server to build or host.
- Actually sends. Carly drafts and sends email across Gmail and Outlook, books meetings, manages tasks, and records meetings — the follow-through that stops at the chat with ChatGPT.
- Builds the workflow by interviewing you. Tell Carly “when a matter deadline is within three days, email the responsible attorney and add a task” in plain English; it interviews you and builds it — no API, no OAuth app, no prompt engineering.
Carly connects to 200+ tools across 40+ categories natively, plus any other tool via your own API key — paste it on carlyassistant.com/integrations. AI agents start at $35/month, and steps in a workflow that don’t use AI run free and unlimited. See integrations.
ChatGPT vs Carly
| ChatGPT (custom MCP on MyCase API) | Carly | |
|---|---|---|
| Official MyCase connector | No | Native integration |
| Query matters, contacts, documents | Only if you build the server | Yes |
| Update matters, create documents | Only if you build write tools | Yes, natively |
| Reacts to a new intake by itself | No | Yes, on the trigger |
| Deadline reminders, on schedule | No | Yes |
| Emails clients and attorneys | No | Yes (Gmail + Outlook) |
| Runs without a session open | No (agent runs are started + metered) | Yes (cloud, 24/7) |
| Setup | Build + host an MCP server, OAuth 2.0, Advanced tier | Describe it in plain English |
| Pricing | Paid ChatGPT plan + MyCase Advanced + your build | AI agents from $35/mo |
ChatGPT’s MyCase connection is a server you build and steer in a chat. Carly is an assistant that works your matters while you’re in court.
Frequently Asked Questions
Does ChatGPT work with MyCase?
Not through an official connector. MyCase isn’t in ChatGPT’s built-in connector set, and MyCase hasn’t published an MCP server. The only way to reach MyCase data from ChatGPT is to build a custom MCP server on the MyCase Open API (OAuth 2.0, Advanced tier) and add it via ChatGPT’s Developer Mode. For a supported, no-build path, Carly integrates with MyCase natively.
Is there a MyCase MCP server?
No official one as of mid-2026. MyCase offers a public REST API but not a hosted MCP endpoint, so any MCP server bridging MyCase to ChatGPT is one you (or a developer) build yourself on top of that API.
Isn’t MyCase already using OpenAI?
Yes, but that’s a different thing. MyCase IQ — MyCase’s built-in AI for summarizing, drafting, and searching your workspace — runs on OpenAI’s API platform behind the scenes. That doesn’t connect the consumer ChatGPT app to your MyCase account; it’s a feature inside MyCase, not an integration you control from ChatGPT.
Can ChatGPT react to a new MyCase intake or deadline automatically?
No. Even though the MyCase API supports webhooks, ChatGPT can’t subscribe to events — it only acts when you prompt it. For “when a new lead comes in, acknowledge it and route it” or “when a deadline nears, remind the attorney,” you need a trigger-based assistant like Carly, which integrates natively with MyCase and runs in the cloud around the clock.
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