MarkItDown MCP (Microsoft) not working in ChatGPT (Codex)? Fixes

Q: Why is MarkItDown MCP (Microsoft) not working in ChatGPT (Codex)?

It failed in our test on Oct 21, 2026. Errors we observed: answer missing ['Example Domain']; no tool result containing ['Example Domain']; answer missing ['Example Domain']; no tool result containing ['Example Domain']

Failed It failed in our test on Oct 21, 2026. Below is the exact setup we used in ChatGPT (Codex) (codex-cli 0.162.0-alpha.17.2), every error we saw, and what to check, all from our own run log.

Date tested: Oct 21, 2026 · From our harness, not the maker’s claims · How we test

1. Use the install config we tested in ChatGPT (Codex)

[mcp_servers.markitdown]
command = "uvx"
args = ["markitdown-mcp"]

Replace any <YOUR_…> placeholder and local test paths with your own. Every client’s tested snippet is on the MarkItDown MCP (Microsoft) page.

2. Check that ChatGPT (Codex) connects to it

In our run the connect check was OK (connect time not recorded). Our check output:

server answered tool calls during the task

Errors we observed

agent task: page read: answer missing ['Example Domain']; no tool result containing ['Example Domain']
agent task: page read (tool error during the run): answer missing ['Example Domain']; no tool result containing ['Example Domain']

Quoted from our run log. Secrets redacted. We list only what we saw.

More help

MarkItDown MCP (Microsoft): all results and setup · Full ChatGPT (Codex) run · General ChatGPT (Codex) MCP troubleshooting