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Description
Problem (one or two sentences)
When using OpenRouter and Gemini 3, anytime roo tries to use a tool, it fails with a 400 Provider Error.
This leaves Gemini completely broken.
Context (who is affected and when)
Using Gemini 3 pro preview on openrouter, no tool calls work
Reproduction steps
- Use Open Router and Gemini 3 Pro Preview
- Try to do anything
Expected result
No error
Actual result
Errors
Variations tried (optional)
I don't have access to other providers
App Version
3.37.0
API Provider (optional)
OpenRouter
Model Used (optional)
Gemini 3 Pro Preview
Roo Code Task Links (optional)
No response
Relevant logs or errors (optional)
400
OpenRouter completion error: Gemini models require OpenRouter reasoning details to be preserved in each request. Please refer to our docs: https://openrouter.ai/docs/guides/best-practices/reasoning-tokens#preserving-reasoning-blocks. Upstream error: {
"error": {
"code": 400,
"message": "Function call is missing a thought_signature in functionCall parts. This is required for tools to work correctly, and missing thought_signature may lead to degraded model performance. Additional data, function call `default_api:new_task` , position 2. Please refer to https://ai.google.dev/gemini-api/docs/thought-signatures for more details.",
"status": "INVALID_ARGUMENT"
}
}
Date/time: 2025-12-23T13:22:49.746Z
Extension version: 3.37.0
Provider: openrouter
Model: google/gemini-3-pro-preview
400
OpenRouter completion error: Gemini models require OpenRouter reasoning details to be preserved in each request. Please refer to our docs: https://openrouter.ai/docs/guides/best-practices/reasoning-tokens#preserving-reasoning-blocks. Upstream error: {
"error": {
"code": 400,
"message": "Function call is missing a thought_signature in functionCall parts. This is required for tools to work correctly, and missing thought_signature may lead to degraded model performance. Additional data, function call `default_api:update_todo_list` , position 2. Please refer to https://ai.google.dev/gemini-api/docs/thought-signatures for more details.",
"status": "INVALID_ARGUMENT"
}
}
// Please share this file with Roo Code Support ([email protected]) to diagnose the issue faster
// Just make sure you're OK sharing the contents of the conversation below.
{
"error": {
"timestamp": "2025-12-23T13:16:07.592Z",
"version": "3.37.0",
"provider": "openrouter",
"model": "google/gemini-3-pro-preview",
"details": "400\nOpenRouter completion error: Gemini models require OpenRouter reasoning details to be preserved in each request. Please refer to our docs: https://openrouter.ai/docs/guides/best-practices/reasoning-tokens#preserving-reasoning-blocks. Upstream error: {\n \"error\": {\n \"code\": 400,\n \"message\": \"Function call is missing a thought_signature in functionCall parts. This is required for tools to work correctly, and missing thought_signature may lead to degraded model performance. Additional data, function call `default_api:new_task` , position 2. Please refer to https://ai.google.dev/gemini-api/docs/thought-signatures for more details.\",\n \"status\": \"INVALID_ARGUMENT\"\n }\n}"
},
"history": [
{
"role": "user",
"content": [
{
"type": "text",
"text": "REMOVED"
},
{
"type": "text",
"text": "REMOVED"
}
],
"ts": 1766495649479
},
{
"role": "assistant",
"content": [
{
"type": "tool_use",
"id": "tool_new_task_k7LktBScQZtG5uIJYm6g",
"name": "new_task",
"input": {
"mode": "code",
"message": "Update overview-channel.ts to support multiple filters",
"todos": "[ ] Update `checkAndUpdateOverviews` to include filters in the query\n[ ] Update `checkIfUpdateNeeded` to use multiple filters logic\n[ ] Update `fetchFilteredTickets` to use multiple filters logic\n[ ] Update `buildOverviewEmbeds` to handle titles for multiple filters"
}
}
],
"ts": 1766495688590,
"reasoning_details": [
{
"type": "reasoning.text",
"text": "REMOVED",
"format": "google-gemini-v1",
"index": 0
},
{
"type": "reasoning.encrypted",
"data": "REMOVED",
"id": "tool_new_task_k7LktBScQZtG5uIJYm6g",
"format": "google-gemini-v1",
"index": 0
}
]
},
{
"role": "user",
"content": [
{
"type": "tool_result",
"tool_use_id": "tool_new_task_k7LktBScQZtG5uIJYm6g",
"content": "{\"status\":\"denied\",\"message\":\"The user denied this operation and provided the following feedback\",\"feedback\":\"No need to to use subtasks\"}"
},
{
"type": "text",
"text": "<environment_details>\n# VSCode Visible Files\nbot\\src\\services\\overview-channel.ts\n\n# VSCode Open Tabs\nbot/src/services/overview-channel.ts,bot/src/commands/overview.ts,shared/prisma/schema.prisma\n\n# Current Time\nCurrent time in ISO 8601 UTC format: 2025-12-23T13:15:04.300Z\nUser time zone: America/New_York, UTC-5:00\n\n# Current Cost\n$0.12\n\n# Current Mode\n<slug>code</slug>\n<name>💻 Code</name>\n<model>google/gemini-3-pro-preview</model>\n<tool_format>native</tool_format>\nYou have not created a todo list yet. Create one with `update_todo_list` if your task is complicated or involves multiple steps.\n</environment_details>"
}
],
"ts": 1766495704303
}
]
}
// Please share this file with Roo Code Support ([email protected]) to diagnose the issue faster
// Just make sure you're OK sharing the contents of the conversation below.
{
"error": {
"timestamp": "2025-12-23T13:22:58.105Z",
"version": "3.37.0",
"provider": "openrouter",
"model": "google/gemini-3-pro-preview",
"details": "400\nOpenRouter completion error: Gemini models require OpenRouter reasoning details to be preserved in each request. Please refer to our docs: https://openrouter.ai/docs/guides/best-practices/reasoning-tokens#preserving-reasoning-blocks. Upstream error: {\n \"error\": {\n \"code\": 400,\n \"message\": \"Function call is missing a thought_signature in functionCall parts. This is required for tools to work correctly, and missing thought_signature may lead to degraded model performance. Additional data, function call `default_api:update_todo_list` , position 2. Please refer to https://ai.google.dev/gemini-api/docs/thought-signatures for more details.\",\n \"status\": \"INVALID_ARGUMENT\"\n }\n}"
},
"history": [
{
"role": "user",
"content": [
{
"type": "text",
"text": "REMOVED"
},
{
"type": "text",
"text": "REMOVED"
}
],
"ts": 1766496074639
},
{
"role": "assistant",
"content": [
{
"type": "tool_use",
"id": "tool_update_todo_list_mL716LwhunURIXx4ZUZf",
"name": "update_todo_list",
"input": {
"todos": "[ ] Update `fetchFilteredTickets` in `bot/src/services/overview-channel.ts` to support multiple filters\n[ ] Update `checkIfUpdateNeeded` in `bot/src/services/overview-channel.ts` to support multiple filters\n[ ] Update `buildOverviewEmbeds` in `bot/src/services/overview-channel.ts` to handle titles for multiple filters"
}
}
],
"ts": 1766496112549,
"reasoning_details": [
{
"type": "reasoning.text",
"text": "REMOVED",
"format": "google-gemini-v1",
"index": 0
},
{
"type": "reasoning.encrypted",
"data": "REMOVED",
"id": "tool_update_todo_list_mL716LwhunURIXx4ZUZf",
"format": "google-gemini-v1",
"index": 0
}
]
},
{
"role": "user",
"content": [
{
"type": "tool_result",
"tool_use_id": "tool_update_todo_list_mL716LwhunURIXx4ZUZf",
"content": "Todo list updated successfully."
},
{
"type": "text",
"text": "<environment_details>\n# VSCode Visible Files\n..\\..\\..\\AppData\\Local\\Temp\\roo-diagnostics-a7c08862-1766495767594.json\n\n# VSCode Open Tabs\nbot/src/services/overview-channel.ts,../../../AppData/Local/Temp/roo-diagnostics-a7c08862-1766495767594.json,bot/src/commands/overview.ts,shared/prisma/schema.prisma\n\n# Current Time\nCurrent time in ISO 8601 UTC format: 2025-12-23T13:21:52.685Z\nUser time zone: America/New_York, UTC-5:00\n\n# Current Cost\n$0.11\n\n# Current Mode\n<slug>code</slug>\n<name>💻 Code</name>\n<model>google/gemini-3-pro-preview</model>\n<tool_format>native</tool_format>\n====\n\nREMINDERS\n\nBelow is your current list of reminders for this task. Keep them updated as you progress.\n\n| # | Content | Status |\n|---|---------|--------|\n| 1 | Update `fetchFilteredTickets` in `bot/src/services/overview-channel.ts` to support multiple filters | Pending |\n| 2 | Update `checkIfUpdateNeeded` in `bot/src/services/overview-channel.ts` to support multiple filters | Pending |\n| 3 | Update `buildOverviewEmbeds` in `bot/src/services/overview-channel.ts` to handle titles for multiple filters | Pending |\n\n\nIMPORTANT: When task status changes, remember to call the `update_todo_list` tool to update your progress.\n\n</environment_details>"
}
],
"ts": 1766496112695
}
]
}leonardas103
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Issue/PR - TriageNew issue. Needs quick review to confirm validity and assign labels.New issue. Needs quick review to confirm validity and assign labels.bugSomething isn't workingSomething isn't working
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