Does Engram work with ChatGPT (Codex)?

Q: Does Engram work with ChatGPT (Codex)?

Yes. In our test on 2026-10-21 (Codex CLI 0.162.0-alpha.17.2, server reported v3.5.2, plan: ChatGPT Plus), Engram passed install, connect, tools and an agent task.

Yes. Engram passed every step of our test in ChatGPT (Codex) on Oct 21, 2026: it installed, connected, its tools were visible, and an agent used it to finish a real task.

Result

ResultPassed

Date testedOct 21, 2026

Plan tested onChatGPT Plus

App versionCodex CLI 0.162.0-alpha.17.2

Server packageserver reported v3.5.2

Connect timeconnect time not recorded

Modelgpt-6-luna (reasoning low)

Steps

install OK
connect OK
tools visible OK
agent task: recall across sessions OKstore in session 1, recall in a fresh session 2 (the token only appears in session 1's prompt)

From our own harness run, not the maker’s claims. How we test.

Versions tested

Codex CLI 0.162.0-alpha.17.2 · server reported v3.5.2 · connect time not recorded · tested Oct 21, 2026

Server package and resolved dependency versions: not recorded for these runs (our harness records them from Oct 19, 2026 on).

What happened in this run

Install config we used

[mcp_servers.engram]
command = "engram"
args = ["mcp", "--tools=agent"]

Connection check

server answered tool calls during the task

Tools check

verified via task step: agent saw and called the server's tools

Agent task: recall across sessions

Tool calls, in order: engram:mem_search, engram:mem_get_observation

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 Engram page. Not connecting? ChatGPT (Codex) MCP troubleshooting.

Other apps we tested it in: Claude Code (partial) · Cursor (partial) · Claude Desktop (passed).

All MCP servers tested in ChatGPT (Codex)