Does Obsidian MCP (StevenStavrakis) work with ChatGPT (Codex)?
Yes. Obsidian MCP (StevenStavrakis) 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
Steps
- install OK
- connect OK
- tools visible OK
- agent task: read page OKfind and read a note in a local Obsidian-format vault (harness/sandbox/vault)
From our own harness run, not the maker’s claims. How we test.
Versions tested
Codex CLI 0.162.0-alpha.17.2 · obsidian-mcp 2.0.1 · connect time not recorded · tested Oct 21, 2026
Server package tested: obsidian-mcp 2.0.1 (npm, Node v22.23.3; resolved 2026-10-21)
Direct and key dependencies as resolved: @modelcontextprotocol/server 2.3.1 · yaml 2.9.1 · zod 4.6.7
All 4 resolved dependencies
@modelcontextprotocol/core==2.3.1
@modelcontextprotocol/server==2.3.1
yaml==2.9.1
zod==4.6.7Captured with: npm ls --all --json in the npx env.
What happened in this run
Install config we used
[mcp_servers.obsidian-mcp]
command = "npx"
args = ["-y", "obsidian-mcp", "{SANDBOX}/vault"]
env = {}Connection check
server answered tool calls during the taskTools check
verified via task step: agent saw and called the server's tools
Agent task: read page
- Tool calls, in order:
obsidian-mcp:obsidian_list_vaults,obsidian-mcp:obsidian_search_vault,obsidian-mcp:obsidian_read_note
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 Obsidian MCP (StevenStavrakis) page. Not connecting? ChatGPT (Codex) MCP troubleshooting.
Other apps we tested it in: Claude Code (passed) · Cursor (passed) · Claude Desktop (failed).