Does Fetch (reference) work with ChatGPT (Codex)?
Yes. Fetch (reference) passed every step of our test in ChatGPT (Codex) on Oct 14, 2026: it installed, connected, its tools were visible, and an agent used it to finish a real task.
Result
ResultPassed
Date testedOct 14, 2026
Plan tested onChatGPT Plus
App versioncodex-cli 0.162.0-alpha.17.2
Modelaccount default (ChatGPT Plus)
Steps
- install OK
- connected OK
- tools visible OK
- agent task: page read OKfetch a public page and return its content
From our own harness run, not the maker’s claims. How we test.
What happened in this run
Install config we used
[mcp_servers.ref-fetch]
command = "uvx"
args = ["mcp-server-fetch", "--allow-private-ips"]Connection check
server answered tool calls during the taskTools check
verified via task step: agent saw and called the server's tools
Agent task: page read
- Tool calls, in order:
ref-fetch:fetch,ref-fetch:fetch
Raw details from our harness log for this run. Secrets redacted.
Set it up in ChatGPT (Codex)
Copy-paste config for every app is on the Fetch (reference) page. Not connecting? ChatGPT (Codex) MCP troubleshooting.
Other apps we tested it in: Claude Code (passed) · Cursor (passed) · Claude Desktop (passed).