Perplexity.ai reports "error":{"code":-32601,"message":"Method not found"}} when being called from Claude

[plddlp]

I'm using the mcp/perplexity-ai container together with Claude. The container log periodically reports an "error":{"code":-32601,"message":"Method not found"}} error. I get a feeling it is related to repeated (idle) health-check calls, but with limited information I'm not sure. I've logged into the container but couldn't find anything else than what's reported above. A sample complete error looks like this:

2025-04-03 09:37:31 {"jsonrpc":"2.0","id":223,"error":{"code":-32601,"message":"Method not found"}}

The frequency varies quite a lot so I can definitely say it's not periodic!

Are my assumptions correct or does the error indicate something more serious?

[thomas-schmidt-fellowork]

Happens to me as well, installed via smithery. Claude desktop looses connection to the MCP Server because of this:

"method":"prompts/list" -> -32601
"resources/list" -> -32601

Happens every five seconds

[plddlp]

In my case Claude doesn't seem to loose connection to my Perplexity Docker container - Claude is able to interact with Perplexity but I'm unsure of the validity of the integration as the errors are very sparse. I can see that perplexity is assigned a number of tasks based on on my Claude prompts but it is impossible(?) for me to see the interaction between them in the Docker logs.

[huiminjn]

Happens to me too, this is what I see in the Clude Desktop's MCP log file:
2025-04-10T13:26:48.764Z [info] [filesystem] Message from client: {"method":"prompts/list","params":{},"jsonrpc":"2.0","id":158}
2025-04-10T13:26:48.765Z [info] [filesystem] Message from server: {"jsonrpc":"2.0","id":158,"error":{"code":-32601,"message":"Method not found"}}

[kristiankyvik]

Same here!

[domik82]

it's happening across the board - not only with this tool - I think it's Claude desktop problem.