MCP timeout capped to 5 minutes.

[viperx1]

Description

Timeout value is capped to 5 minutes. When setting it to 1200000 (20 minutes) like below, calls timeout after 5 minutes. Alternatively setting it to 1 correctly caps to 1 ms effectively making mcp unusable.
chris@DESKTOP-xxx:/.config/opencode$ cat opencode.jsonc
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"xxx": {
"type": "remote",
"url": "http://192.168.0.2:8081",
"enabled": true,
"timeout": 1200000,
"headers": {
"Authorization": "Bearer {file:/.config/opencode/.secrets/xxx}"
}
},
"github": {
"type": "remote",
"url": "https://api.githubcopilot.com/mcp/",
"enabled": true,
"oauth": false,
"headers": {
"Authorization": "Bearer {file:/.config/opencode/.secrets/github-pat}"
}
}
}
}
chris@DESKTOP-xxx:/.config/opencode$

Plugins

none

OpenCode version

1.18.9

Steps to reproduce

1. Start mcp server in local network
2. Start opencode using above config.

Screenshot and/or share link

No response

Operating System

Windows 10/WSL

Terminal

PowerShell 7.6.4

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• provider.*.options.timeout config is not applied to API requests #30252: provider.*.options.timeout config is not applied to API requests — reports the same 5-minute (300 s) hard cap not being respected when a higher timeout is configured
• Desktop hits 5-minute Headers Timeout Error with slow local providers #26602: Desktop hits 5-minute Headers Timeout Error with slow local providers — same symptom where timeout: false or a larger timeout value is ignored and requests still cut off at ~300 s

If your issue is the same root cause, please add a +1 or any additional details to those existing reports rather than opening a new one.