Matrix / Market Research / Wynter

Wynter MCP server

Market Research · remote · Up · auth · Docs + endpoint checked 2026-10-16

Wynter has an official hosted MCP server at https://api.wynter.io/mcp. It uses OAuth with PKCE (public client, pre-registered client ID; no dynamic client registration) for Claude/ChatGPT; personal access token for Claude Code/Codex over unknown. Agents can use: Read completed tests (message tests, surveys, preference tests), Questions and verbatim respondent answers, Respondent roster and demographic breakdown. Last checked 2026-10-16 10:06 PT: Up · auth.

Works in: ClaudeChatGPTClaude Code
Sources: Claude · ChatGPT · Claude Code, checked 2026-10-16
Access: Read only
Credits: Credits not confirmed
Plan: Any Wynter team account
Setup: Self-serve
No admin step in the vendor's setup notes. Source: wynter.com, checked 2026-10-16
Useful for: Marketing, Sales leaders

Wynter MCP endpoint and transport

https://api.wynter.io/mcp

Transport: unknown
Docs: Official Wynter MCP docs

Connect Wynter without code

Wynter's docs confirm it works in Claude and ChatGPT. You don't need a terminal or a config file. Check Wynter's docs first: some vendors give you a personal URL or an API key to use in place of the plain endpoint.

Claude (web and desktop app)

If Wynter shows up when you browse connectors in Claude, connect it from there instead. That skips steps 2 to 4.

In Claude, open Customize → Connectors.
Click + Add, then Add custom connector.
Name it “Wynter”, paste the server URL https://api.wynter.io/mcp, and click Continue.
Review the sign-in settings Claude detected and click Add.
Click Connect and sign in to Wynter. Then ask Claude something like “What can the Wynter connector do?”

On Team and Enterprise plans, an Owner adds the connector first under Organization settings → Connectors → Add → Custom → Web. Each person then connects it from Customize → Connectors. Free plans can add one custom connector.

Steps from the Claude Help Center: support.claude.com, checked 2026-10-16

ChatGPT

If Wynter has its own plugin in ChatGPT's directory, install that instead.

Go to chatgpt.com/plugins.
Select +, then Add custom MCP server. If you don't see it, your plan or workspace settings may not allow custom servers, so ask your workspace admin.
Enter a name and description. Under Connection, paste the server URL https://api.wynter.io/mcp.
Set up sign-in, read the warning, and select I understand and want to continue.
Select Create as a plugin. In a new chat, type @ and pick Wynter.

Steps from the OpenAI developer docs: developers.openai.com, checked 2026-10-16

From Wynter's docs: Claude: add custom connector, ignore the 'automatic client registration is not supported' notice, enter client ID wynter-claude-web with no secret. ChatGPT: developer mode required (admin must enable on Business/Enterprise/Edu), client ID wynter-chatgpt. Claude Code and Codex use a personal access token from Company settings > API tokens that expires after 90 days.Source: wynter.com, checked 2026-10-16

Developer setup (Claude Code, Cursor)

Add this to .mcp.json (Claude Code, project root) or ~/.cursor/mcp.json (Cursor). Remove the // comment line if your client requires strict JSON.

{
  "mcpServers": {
    "wynter": {
      "url": "https://api.wynter.io/mcp"
    }
  }
}

Add the endpoint to your client config (above), or as a custom connector in Claude.
Complete the OAuth sign-in. In Claude Code, run /mcp and pick the server.
Test it with a prompt like: “List the tools the Wynter MCP server exposes.”

Wynter MCP authentication

OAuth with PKCE (public client, pre-registered client ID; no dynamic client registration) for Claude/ChatGPT; personal access token for Claude Code/Codex

Sign in with OAuth in your client (run /mcp in Claude Code). Do it once interactively, and the client stores and refreshes the token.

What it can change

Read only The documented tools only read data. None of them create, change, delete or send anything.

Source: wynter.com, checked 2026-10-16

Cost and credits

Not confirmed Wynter's docs don't say whether MCP calls use credits or paid usage.

Plan required

Any Wynter team account

Source: wynter.com, checked 2026-10-16

Admin and governance

Controls Wynter itself provides. Settings inside Claude or ChatGPT aren't counted here.

An admin must approve or enable the connectionNot confirmed
Scopes or permissions can limit what it reachesNot confirmed
Individual tools can be turned offNot confirmed
MCP activity shows in an audit logNot confirmed

What the Wynter MCP server can do

Read completed tests (message tests, surveys, preference tests)
Questions and verbatim respondent answers
Respondent roster and demographic breakdown
Per-question statistics

Wynter MCP status

Up · auth HTTP 401 · 181 ms · checked 2026-10-16 10:06 PT. Full status and history.

Recipes that use Wynter

Message test results to sequence copy: rewrite outbound steps from what buyers said (Wynter + Reply.io)

Wynter MCP FAQ

What is the Wynter MCP server URL?

https://api.wynter.io/mcp

How does Wynter MCP authenticate?

OAuth with PKCE (public client, pre-registered client ID; no dynamic client registration) for Claude/ChatGPT; personal access token for Claude Code/Codex.

Which apps does Wynter MCP work with?

Wynter's docs confirm it works in Claude, ChatGPT and Claude Code. Other apps aren't confirmed in the docs yet.

Can I use Wynter in Claude or ChatGPT without code?

Yes. Wynter's docs confirm it works in Claude and ChatGPT. Add it as a connector in the app settings and sign in. No terminal or config file needed.

Can the Wynter MCP server change my data?

No. The tools in Wynter's docs only read data.

What Wynter plan do I need for MCP?

Any Wynter team account.

Is the Wynter MCP server official?

Yes. It's documented on wynter.com, last checked 2026-10-16.

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