Hi all,
In the final exercise where you run the server in the Render cloud service, I found that you need to change the instantiation of the mcp object around line 10 to “mcp = FastMCP(“research”, host=“0.0.0.0”, port=10000)” - adding the host and port mapping to match what Render requires by default. At least that’s what I had to do to make it work.
Good Luck.
Fraser
Thanks for your report.
Even with the changes proposed above I do get a deployment error.
Deploy failed
Timed out
Port scan timeout reached, no open ports detected on 0.0.0.0. Detected open ports on localhost – did you mean to bind one of these to 0.0.0.0?
June 12, 2025 at 11:47 AM
The log:
[notice] A new release of pip is available: 24.0 → 25.1.1
Jun 11 11:05:59 PM
[notice] To update, run: pip install --upgrade pip
Jun 11 11:06:03 PM
==> Uploading build…
Jun 11 11:06:09 PM
==> Uploaded in 4.6s. Compression took 1.0s
Jun 11 11:06:09 PM
==> Build successful 
Jun 11 11:06:10 PM
==> Deploying…
Jun 11 11:06:25 PM
==> Running ‘python research_server.py’
Jun 11 11:06:30 PM
INFO: Started server process [102]
Jun 11 11:06:30 PM
INFO: Waiting for application startup.
Jun 11 11:06:30 PM
INFO: Application startup complete.
Jun 11 11:06:30 PM
INFO: Uvicorn running on http://127.0.0.1:8001 (Press CTRL+C to quit)
Jun 11 11:06:31 PM
INFO: 127.0.0.1:44856 - “HEAD / HTTP/1.1” 404 Not Found
Jun 11 11:07:18 PM
==> No open ports detected on 0.0.0.0, continuing to scan…
Jun 11 11:07:18 PM
==> Docs on specifying a port: Web Services – Render Docs
Jun 11 11:08:19 PM
==> No open ports detected on 0.0.0.0, continuing to scan…
Jun 11 11:08:19 PM
==> Docs on specifying a port: Web Services – Render Docs
Jun 11 11:09:20 PM
==> No open ports detected on 0.0.0.0, continuing to scan…
Jun 11 11:09:20 PM
==> Docs on specifying a port: Web Services – Render Docs
Jun 11 11:10:21 PM
==> No open ports detected on 0.0.0.0, continuing to scan…
Jun 11 11:10:21 PM
==> Docs on specifying a port: Web Services – Render Docs
Jun 11 11:11:22 PM
==> No open ports detected on 0.0.0.0, continuing to scan…
Jun 11 11:11:22 PM
==> Docs on specifying a port: Web Services – Render Docs
Jun 11 11:11:27 PM
==> Port scan timeout reached, no open ports detected on 0.0.0.0. Detected open ports on localhost – did you mean to bind one of these to 0.0.0.0?
Jun 11 11:11:27 PM
==> Docs on specifying a port: Web Services – Render Docs
Jun 11 11:21:11 PM
==> Timed out: Port scan timeout reached, no open ports detected on 0.0.0.0. Detected open ports on localhost – did you mean to bind one of these to 0.0.0.0?
Jun 11 11:21:11 PM
==> Common ways to troubleshoot your deploy: Troubleshooting Your Deploy – Render Docs
