Setup MCP and receiving a 404 Not Found error

How to setup MCP with your plugin?

Error and Current Status

Request URL:
https://example.com/wp-json/mcp/v1/sse?token=your-token-here

Server Response:
404 Not Found
Error details: {“code”:”rest_no_route”}

Description:
The issue is reproducible even when AI Copilot is the only active plugin, so this is not related to a plugin conflict. The problem appears to be that the endpoint no longer exists under the old route.

Evidence from Legacy Code

After checking with a string search tool, I confirmed that the outdated MCP route is still hardcoded in the plugin’s source files.

It was found in the following file:
wp-content/plugins/ai-copilot-content-generator/modules/options/views/tpl/AdminOptionsTabMcp.php

This indicates the plugin is still referencing the deprecated path:
mcp/v1/sse

Updated Routes and Resolution

The current and correct REST API namespace is:
aiwu/v1

The legacy route “mcp/v1/sse” has been removed and replaced with newer endpoints, including:
aiwu/v1/ask-chatbot

This explains the 404 response and confirms that connections or integrations using the old MCP path need to be updated to align with the new AIWU API structure.