agents hanging and get stuck in read loops

[demiolawunmi]

Bug Description

When using cursor-acp as a provider in oh-my-opencode, agents (especially Composer 2 / deep agents) frequently hang and get stuck in infinite read loops without making progress.

Steps to Reproduce

1. Configure oh-my-opencode to use cursor-acp provider with Claude or GPT models
2. Give the agent a multi-step task (e.g., implementing T1-T3 of a feature)
3. Agent begins reading files but gets stuck repeating the same reads
4. Eventually stops without implementing anything

Expected Behavior

• Agent reads files once, understands context, and implements
• If file content is truncated, agent should handle it gracefully
• Agent should not loop infinitely on reads

Actual Behavior

• Agent reads the same files repeatedly (5-10+ times)
• Tool output shows truncated content but agent keeps re-reading
• Eventually stops with no implementation done
• API errors appear in Cursor dashboard

Environment

• oh-my-opencode with cursor-acp plugin (@rama_nigg/open-cursor)
• Cursor running locally with proxy on port 32124
• Tried models: composer-2, claude-4.6-sonnet-medium, gpt-5.4-high

Additional Notes

• The issue seems to be with cursor-acp proxy layer, not omO itself
• When API errors occur, they show up in Cursor dashboard (not OpenCode)
• Using GitHub Copilot models directly works without this hanging issue
• This may be related to rate limiting or context issues on Cursor's side

Suggested Investigation

1. Is there a way to add timeout/retry limits to cursor-acp requests?
2. Could omO detect when an agent is stuck in a read loop and recover?
3. Consider documenting cursor-acp as an experimental/unreliable provider

[Raikaru]

Just wanted to confirm that this also happens to me. It used a bunch of my usage on just failing to actually do anything.

[GemeWolf]

I had the same problem; I realized I needed to install a dependency on my computer, but it still didn't work.

[Nomadcxx]

Hey mate, this is related to the earlier loop guard/read issues, but I don’t think it’s a clean duplicate.

A few fixes have landed since then around read/search/shell handling, task/subagent validation loops, and the bash/shell timeout bug. So if this was caused by one of those older paths, latest should behave better.

That said, composer/deep agents can still get stuck doing repeated exploration, especially when tool output is truncated or cursor-side api errors happen. My suspicion is this is partly because cursor/composer is very IDE-first, and this plugin is bridging that into opencode’s tool loop.

I’ll leave this open for now. If this still happens on @rama_nigg/open-cursor@2.4.1, could you send the opencode version, exact model, plugin config, and debug logs from one run where it loops? The repeated tool calls / file paths would help too if they’re visible.

[GemeWolf]

Same issue here (not the OP). Latest @rama_nigg/open-cursor fixed it for me — can't reproduce anymore. Leaving this for the maintainer/OP in case others still see it on 2.4.1+.

@Nomadcxx

[JosueGalRe]

Hey, I'm still seeing this on:
@rama_nigg/open-cursor: 2.4.4
opencode: 1.14.48
Model: Opus 4.7 1M Max
plugin config:

"plugin": [
    "oh-my-openagent@latest",
    "cursor-acp"
],

logs:

❯ CURSOR_ACP_LOG_LEVEL=debug opencode run "quiero que revises la configuración que está en ~/.config/opencode y ajustes los modelos de oh my ohmyopenagent, investiga si puedes cuáles deben de ser los modelos desde github y luego preguntame cuáles quiero" --model cursor-acp/claude-opus-4-7-max

> Sisyphus - Ultraworker · claude-opus-4-7-max

⚙ shell {"command":"ls -la ~/.config/opencode/","timeout":30000,"toolCallId":"toolu_01Nf2TL2sjDEMVihW53Hc8x7","simpleCommands":["ls"],"hasInputRedirect":false,"hasOutputRedirect":false,"parsingResult":{"parsingFailed":false,"executableCommands":[{"name":"ls","args":[{"type":"word","value":"-la"},{"type":"word","value":"~/.config/opencode/"}],"fullText":"ls -la ~/.config/opencode/"}],"hasRedirects":false,"hasCommandSubstitution":false,"redirects":[]},"fileOutputThresholdBytes":"40000","isBackground":false,"skipApproval":false,"timeoutBehavior":"TIMEOUT_BEHAVIOR_BACKGROUND","description":"List opencode config directory","closeStdin":false,"cwd":""}
⚙ shell {"command":"cat ~/.config/opencode/oh-my-openagent.json","timeout":30000,"toolCallId":"toolu_014PhE4sbEX7SRTXSXqT93gz","simpleCommands":["cat"],"hasInputRedirect":false,"hasOutputRedirect":false,"parsingResult":{"parsingFailed":false,"executableCommands":[{"name":"cat","args":[{"type":"word","value":"~/.config/opencode/oh-my-openagent.json"}],"fullText":"cat ~/.config/opencode/oh-my-openagent.json"}],"hasRedirects":false,"hasCommandSubstitution":false,"redirects":[]},"fileOutputThresholdBytes":"40000","isBackground":false,"skipApproval":false,"timeoutBehavior":"TIMEOUT_BEHAVIOR_BACKGROUND","description":"Read oh-my-openagent config","closeStdin":false,"cwd":""}
⚙ shell {"command":"cat ~/.config/opencode/opencode.json","timeout":30000,"toolCallId":"toolu_bdrk_019hF6k54222d3d9RBUcFGfw","simpleCommands":["cat"],"hasInputRedirect":false,"hasOutputRedirect":false,"parsingResult":{"parsingFailed":false,"executableCommands":[{"name":"cat","args":[{"type":"word","value":"~/.config/opencode/opencode.json"}],"fullText":"cat ~/.config/opencode/opencode.json"}],"hasRedirects":false,"hasCommandSubstitution":false,"redirects":[]},"fileOutputThresholdBytes":"40000","isBackground":false,"skipApproval":false,"timeoutBehavior":"TIMEOUT_BEHAVIOR_BACKGROUND","description":"Read main opencode config","closeStdin":false,"cwd":""}

Tool loop guard stopped repeated failing calls to "shell" after 3 attempts (limit 2). Adjust tool arguments and retry.