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Figma MCP not working

Forum|Forum|1 year ago
August 1, 2025
43 replies
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I have Figma MCP enabled but whenever I go to the MCP server URL I see the following response

{"jsonrpc":"2.0","error":{"code":-32001,"message":"Invalid sessionId"},"id":null}

Figma MCP

Best answer by Tom Reem

Hi everyone,

I really appreciate you taking the time to share your updates here. I’ve passed your latest replies along to our product team to keep your experience front and center.

A couple of points to help clarify next steps:

If you see the following error, this is coming from the Cursor side. It may turn red after 5 minutes, but it should still function. If you can see “5 tools,” it should be connected.
Figma MCP Cursor test % curl -s http://127.0.0.1:3845/mcp || echo "Connection failed"
{"jsonrpc":"2.0","error":{"code":-32001,"message":"Invalid sessionId"},"id":null}
If you’re seeing errors in your MCP clients, screenshots of where those appear will help us better understand the behavior — feel free to reply here or send those in directly.

If you’d like a member of our Product Support team to take a closer look at your specific file, please reach out to them directly and include:

the link to this Forum thread for context
a full-size screen recording of the issue (if possible)
a link to the affected file
edit access for support-share@figma.com

Thanks again for your patience — your reports are a big help in improving things

Show previous replies

Lukas Malmberg

New Member

This has not been resolved - got it to work once randomly but then getting:

Figma MCP Cursor test % curl -s http://127.0.0.1:3845/mcp || echo "Connection failed"
{"jsonrpc":"2.0","error":{"code":-32001,"message":"Invalid sessionId"},"id":null}

C

cryptologist

New Member

Edit: Figured this out. Just had to remove the mcp and install the mcp in the correct directory.

Im still getting a “failed to connect” error using the /mcp or /sse commands. I removed the mcp multiple times and it seems to be running the figma desktop app. I wish there were more ways to debug this.

Not sure whats happening. Anyone have any suggestions? (on Mac OS, using Claude Code)

Yasser Loukniti

New Member

Hey everyone i’ve fix it with this config . By changing not just the link but the type too from sse to http
in claude-code.
● Update(..\.claude.json)
600 "mcpContextUris": [],
601 "mcpServers": {
602 "figma-server": {
603 - "type": "sse",
603 + "type": "http",
604 "url": "http://localhost:3845/mcp"
605 }
606 },

Tom Osowski

New Member

I still have the problem

Figma + Cursor. can’t connect it

Tangtang8982

New Member

@Tangtang8982 check your hidden LLM instructions file. This was the fix for me with Claude Code https://x.com/Levidjones/status/1952958415086711118

I’m using vsCode, my configuration is good but always the same problem.

I tried using Cursor and have the same…

illl

New Member

only http://127.0.0.1:3845/sse works. http://127.0.0.1:3845/mcp still returns

{"jsonrpc":"2.0","error":{"code":-32001,"message":"Invalid sessionId"},"id":null}

(Figma Desktop App version 125.6.5)

S

stixx869

New Member

Anyone had any luck here? I get stuck in calling_get_code:

{

"clientLanguages": "typescript,javascript,html,css",

"clientFrameworks": "react,next.js",

"nodeId": ""

}

Visiting the URL gives me: {"jsonrpc":"2.0","error":{"code":-32001,"message":"Invalid sessionId"},"id":null}

I also don’t understand why the indicator keeps going red no matter home many times i turn it off and on.

Lukas Malmberg

New Member

@Tom Reem - Exact same issue for me as posted above - this is not fixed. I have tried everything and when I close and open Figma it says that the MCP server is running on the url that I have in Cursor.