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Merged
Luca Forstner (lforst) merged 4 commits into from
Jul 3, 2026
Merged

fix(ai-sdk): Don't capture message history in tool spans #2179

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ac4ab8c
fix(ai-sdk): Don't capture message history in tool spans
lforst Jul 1, 2026
5758851
actually fix
lforst Jul 1, 2026
bf650b4
cs
lforst Jul 1, 2026
46a207a
Merge remote-tracking branch 'origin/main' into lforst/ai-sdk-tool-lo…
lforst Jul 3, 2026
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5 changes: 5 additions & 0 deletions .changeset/lemon-mirrors-fold.md
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@@ -0,0 +1,5 @@
---
"braintrust": minor
---

fix(ai-sdk): Don't capture message history in tool spans
130 changes: 65 additions & 65 deletions e2e/scenarios/ai-sdk-instrumentation/__cassettes__/ai-sdk-v3.cassette.json
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152 changes: 76 additions & 76 deletions e2e/scenarios/ai-sdk-instrumentation/__cassettes__/ai-sdk-v4.cassette.json
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732 changes: 473 additions & 259 deletions e2e/scenarios/ai-sdk-instrumentation/__cassettes__/ai-sdk-v5.cassette.json
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2,674 changes: 1,865 additions & 809 deletions e2e/scenarios/ai-sdk-instrumentation/__cassettes__/ai-sdk-v6.cassette.json
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1,471 changes: 1,333 additions & 138 deletions e2e/scenarios/ai-sdk-instrumentation/__cassettes__/ai-sdk-v7.cassette.json
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28 changes: 3 additions & 25 deletions e2e/scenarios/ai-sdk-instrumentation/__snapshots__/ai-sdk-v3-auto-hook.span-tree.json
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Expand Up @@ -46,7 +46,6 @@
"headers": "<omitted>"
},
"response": {
"id": "<span:1>",
"modelId": "gpt-4o-mini-2024-07-18",
"timestamp": "<timestamp>"
},
Expand Down Expand Up @@ -99,7 +98,6 @@
},
"response": {
"headers": "<omitted>",
"id": "<span:1>",
"messages": [
{
"content": [
Expand All @@ -126,7 +124,6 @@
"isContinued": false,
"response": {
"headers": "<omitted>",
"id": "<span:1>",
"messages": [
{
"content": [
Expand Down Expand Up @@ -387,14 +384,12 @@
"headers": "<omitted>"
},
"response": {
"id": "<span:1>",
"modelId": "gpt-4o-mini-2024-07-18",
"timestamp": "<timestamp>"
},
"toolCalls": [
{
"args": "{\"location\":\"Paris, France\"}",
"toolCallId": "<toolCallId:2>",
"toolCallType": "function",
"toolName": "get_weather"
}
Expand Down Expand Up @@ -424,12 +419,9 @@
"name": "get_weather",
"type": "tool",
"children": [],
"input": [
{
"location": "Paris, France"
},
{}
],
"input": {
"location": "Paris, France"
},
"output": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}"
}
],
Expand Down Expand Up @@ -479,7 +471,6 @@
},
"response": {
"headers": "<omitted>",
"id": "<span:2>",
"messages": [
{
"content": [
Expand All @@ -491,7 +482,6 @@
"args": {
"location": "Paris, France"
},
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather",
"type": "tool-call"
}
Expand All @@ -502,7 +492,6 @@
"content": [
{
"result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather",
"type": "tool-result"
}
Expand All @@ -525,7 +514,6 @@
"isContinued": false,
"response": {
"headers": "<omitted>",
"id": "<span:2>",
"messages": [
{
"content": [
Expand All @@ -537,7 +525,6 @@
"args": {
"location": "Paris, France"
},
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather",
"type": "tool-call"
}
Expand All @@ -548,7 +535,6 @@
"content": [
{
"result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather",
"type": "tool-result"
}
Expand All @@ -566,7 +552,6 @@
"args": {
"location": "Paris, France"
},
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather",
"type": "tool-call"
}
Expand All @@ -577,7 +562,6 @@
"location": "Paris, France"
},
"result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather"
}
],
Expand All @@ -595,7 +579,6 @@
"args": {
"location": "Paris, France"
},
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather",
"type": "tool-call"
}
Expand All @@ -606,7 +589,6 @@
"location": "Paris, France"
},
"result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
"toolCallId": "<toolCallId:1>",
"toolName": "get_weather"
}
],
Expand Down Expand Up @@ -711,14 +693,12 @@
"headers": "<omitted>"
},
"response": {
"id": "<span:1>",
"modelId": "gpt-4o-mini-2024-07-18",
"timestamp": "<timestamp>"
},
"toolCalls": [
{
"args": "{\"city\":\"Paris\"}",
"toolCallId": "<toolCallId:2>",
"toolCallType": "function",
"toolName": "json"
}
Expand Down Expand Up @@ -787,7 +767,6 @@
},
"response": {
"headers": "<omitted>",
"id": "<span:1>",
"modelId": "gpt-4o-mini-2024-07-18",
"timestamp": "<timestamp>"
},
Expand Down Expand Up @@ -868,7 +847,6 @@
"toolCalls": [
{
"args": "{\"city\":\"Paris\"}",
"toolCallId": "<toolCallId:1>",
"toolCallType": "function",
"toolName": "json",
"type": "tool-call"
Expand Down
28 changes: 3 additions & 25 deletions e2e/scenarios/ai-sdk-instrumentation/__snapshots__/ai-sdk-v3-auto-hook.span-tree.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,6 @@ span_tree:
│ },
│ "response": {
│ "headers": "<omitted>",
│ "id": "<span:1>",
│ "messages": [
│ {
│ "content": [
Expand All @@ -64,7 +63,6 @@ span_tree:
│ "isContinued": false,
│ "response": {
│ "headers": "<omitted>",
│ "id": "<span:1>",
│ "messages": [
│ {
│ "content": [
Expand Down Expand Up @@ -141,7 +139,6 @@ span_tree:
│ "headers": "<omitted>"
│ },
│ "response": {
│ "id": "<span:1>",
│ "modelId": "gpt-4o-mini-2024-07-18",
│ "timestamp": "<timestamp>"
│ },
Expand Down Expand Up @@ -336,7 +333,6 @@ span_tree:
│ },
│ "response": {
│ "headers": "<omitted>",
│ "id": "<span:2>",
│ "messages": [
│ {
│ "content": [
Expand All @@ -348,7 +344,6 @@ span_tree:
│ "args": {
│ "location": "Paris, France"
│ },
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather",
│ "type": "tool-call"
│ }
Expand All @@ -359,7 +354,6 @@ span_tree:
│ "content": [
│ {
│ "result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather",
│ "type": "tool-result"
│ }
Expand All @@ -382,7 +376,6 @@ span_tree:
│ "isContinued": false,
│ "response": {
│ "headers": "<omitted>",
│ "id": "<span:2>",
│ "messages": [
│ {
│ "content": [
Expand All @@ -394,7 +387,6 @@ span_tree:
│ "args": {
│ "location": "Paris, France"
│ },
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather",
│ "type": "tool-call"
│ }
Expand All @@ -405,7 +397,6 @@ span_tree:
│ "content": [
│ {
│ "result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather",
│ "type": "tool-result"
│ }
Expand All @@ -423,7 +414,6 @@ span_tree:
│ "args": {
│ "location": "Paris, France"
│ },
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather",
│ "type": "tool-call"
│ }
Expand All @@ -434,7 +424,6 @@ span_tree:
│ "location": "Paris, France"
│ },
│ "result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather"
│ }
│ ],
Expand All @@ -452,7 +441,6 @@ span_tree:
│ "args": {
│ "location": "Paris, France"
│ },
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather",
│ "type": "tool-call"
│ }
Expand All @@ -463,7 +451,6 @@ span_tree:
│ "location": "Paris, France"
│ },
│ "result": "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}",
│ "toolCallId": "<toolCallId:1>",
│ "toolName": "get_weather"
│ }
│ ],
Expand Down Expand Up @@ -561,14 +548,12 @@ span_tree:
│ │ "headers": "<omitted>"
│ │ },
│ │ "response": {
│ │ "id": "<span:1>",
│ │ "modelId": "gpt-4o-mini-2024-07-18",
│ │ "timestamp": "<timestamp>"
│ │ },
│ │ "toolCalls": [
│ │ {
│ │ "args": "{\"location\":\"Paris, France\"}",
│ │ "toolCallId": "<toolCallId:2>",
│ │ "toolCallType": "function",
│ │ "toolName": "get_weather"
│ │ }
Expand All @@ -594,12 +579,9 @@ span_tree:
│ │ "tokens": 103
│ │ }
│ └── get_weather [tool]
│ input: [
│ {
│ "location": "Paris, France"
│ },
│ {}
│ ]
│ input: {
│ "location": "Paris, France"
│ }
│ output: "{\"condition\":\"sunny\",\"location\":\"Paris, France\",\"temperatureC\":22}"
├── ai-sdk-generate-object-operation
│ metadata: {
Expand Down Expand Up @@ -649,7 +631,6 @@ span_tree:
│ },
│ "response": {
│ "headers": "<omitted>",
│ "id": "<span:1>",
│ "modelId": "gpt-4o-mini-2024-07-18",
│ "timestamp": "<timestamp>"
│ },
Expand Down Expand Up @@ -718,14 +699,12 @@ span_tree:
│ "headers": "<omitted>"
│ },
│ "response": {
│ "id": "<span:1>",
│ "modelId": "gpt-4o-mini-2024-07-18",
│ "timestamp": "<timestamp>"
│ },
│ "toolCalls": [
│ {
│ "args": "{\"city\":\"Paris\"}",
│ "toolCallId": "<toolCallId:2>",
│ "toolCallType": "function",
│ "toolName": "json"
│ }
Expand Down Expand Up @@ -848,7 +827,6 @@ span_tree:
"toolCalls": [
{
"args": "{\"city\":\"Paris\"}",
"toolCallId": "<toolCallId:1>",
"toolCallType": "function",
"toolName": "json",
"type": "tool-call"
Expand Down
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