### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) and this hasn't been reported yet - [x] This is a single bug report (please file separate reports for different bugs) - [x] I am using the latest version of Claude Code ### What's Wrong? Bug: apify-mcp-server connector fails on every tool call with "User was not found or authentication token is not valid." Proof it's not a token/account i

apify-mcp-server connector fails with invalid auth token error

Status Open

Reported on v2.1.220

Maintainer reply None cached

Activity 0 comments · opened Jul 28, 2026

Preflight Checklist

[x] I have searched existing issues and this hasn't been reported yet
[x] This is a single bug report (please file separate reports for different bugs)
[x] I am using the latest version of Claude Code

What's Wrong?

Bug: apify-mcp-server connector fails on every tool call with "User was not found or authentication token is not valid."

Proof it's not a token/account issue: Tested with 2 separate Apify accounts and freshly generated tokens each time, including a full uninstall/reinstall of the connector — same error every time.

Direct confirmation the token is valid: Calling Apify's API directly (GET https://api.apify.com/v2/users/me-equivalent test) with the same token returns a valid response — no auth error.

Conclusion: The connector is not correctly attaching the Authorization: Bearer <token> header when it forwards requests to Apify's API. This is a bug in the connector itself, not the user's credentials.

What Should Happen?

The connector should successfully authenticate and return data from Apify API calls (e.g., fetch-actor-details, search-actors) when a valid Apify API token is configured — the same way it works when calling Apify's API directly with the same token (confirmed via curl/Test endpoint, which returned a valid response, not an auth error).

Error Messages/Logs

Error calling tool "fetch-actor-details": User was not found or authentication token is not valid. Authentication failed, check APIFY_TOKEN is set and valid.

Steps to Reproduce

Install/connect the apify-mcp-server connector with a valid Apify API token
Call any Apify tool (e.g., fetch-actor-details on "apify/rag-web-browser")
Observe error: "User was not found or authentication token is not valid"
Confirmed the token works fine when tested directly against Apify's API outside the connector

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.220

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

WSL (Windows Subsystem for Linux)

Additional Information