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fix(anthropic): show null index when not present, default to 0 #9225

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Merged
mudler merged 1 commit into from
Apr 4, 2026
Merged

fix(anthropic): show null index when not present, default to 0 #9225

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24 changes: 13 additions & 11 deletions core/http/endpoints/anthropic/messages.go
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Original file line number Diff line number Diff line change
Expand Up @@ -357,7 +357,7 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
// Send initial content_block_start event
contentBlockStart := schema.AnthropicStreamEvent{
Type: "content_block_start",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
ContentBlock: &schema.AnthropicContentBlock{Type: "text", Text: ""},
}
sendAnthropicSSE(c, contentBlockStart)
Expand All @@ -376,7 +376,7 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
if !inToolCall && currentBlockIndex == 0 {
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_stop",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
})
currentBlockIndex++
inToolCall = true
Expand All @@ -386,7 +386,7 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
tc := toolCalls[i]
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_start",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
ContentBlock: &schema.AnthropicContentBlock{
Type: "tool_use",
ID: fmt.Sprintf("toolu_%s_%d", id, i),
Expand All @@ -395,15 +395,15 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
})
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_delta",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
Delta: &schema.AnthropicStreamDelta{
Type: "input_json_delta",
PartialJSON: tc.Arguments,
},
})
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_stop",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
})
currentBlockIndex++
}
Expand All @@ -416,7 +416,7 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
if !inToolCall {
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_delta",
Index: 0,
Index: intPtr(0),
Delta: &schema.AnthropicStreamDelta{
Type: "text_delta",
Text: token,
Expand Down Expand Up @@ -516,7 +516,7 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
// Close the text content block
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_stop",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
})
currentBlockIndex++
inToolCall = true
Expand All @@ -528,7 +528,7 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
}
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_start",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
ContentBlock: &schema.AnthropicContentBlock{
Type: "tool_use",
ID: toolCallID,
Expand All @@ -537,15 +537,15 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
})
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_delta",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
Delta: &schema.AnthropicStreamDelta{
Type: "input_json_delta",
PartialJSON: fc.Arguments,
},
})
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_stop",
Index: currentBlockIndex,
Index: intPtr(currentBlockIndex),
})
currentBlockIndex++
toolCallsEmitted++
Expand All @@ -557,7 +557,7 @@ func handleAnthropicStream(c echo.Context, id string, input *schema.AnthropicReq
if !inToolCall {
sendAnthropicSSE(c, schema.AnthropicStreamEvent{
Type: "content_block_stop",
Index: 0,
Index: intPtr(0),
})
}

Expand Down Expand Up @@ -598,6 +598,8 @@ func convertFuncsToOpenAITools(funcs functions.Functions) []functions.Tool {
return tools
}

func intPtr(i int) *int { return &i }

func sendAnthropicSSE(c echo.Context, event schema.AnthropicStreamEvent) {
data, err := json.Marshal(event)
if err != nil {
Expand Down
4 changes: 2 additions & 2 deletions core/schema/anthropic.go
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Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,7 @@ type AnthropicMessage struct {
// AnthropicContentBlock represents a content block in an Anthropic message
type AnthropicContentBlock struct {
Type string `json:"type"`
Text string `json:"text,omitempty"`
Text string `json:"text"`
Source *AnthropicImageSource `json:"source,omitempty"`
ID string `json:"id,omitempty"`
Name string `json:"name,omitempty"`
Expand Down Expand Up @@ -116,7 +116,7 @@ type AnthropicUsage struct {
// AnthropicStreamEvent represents a streaming event from the Anthropic API
type AnthropicStreamEvent struct {
Type string `json:"type"`
Index int `json:"index,omitempty"`
Index *int `json:"index,omitempty"`
ContentBlock *AnthropicContentBlock `json:"content_block,omitempty"`
Delta *AnthropicStreamDelta `json:"delta,omitempty"`
Message *AnthropicStreamMessage `json:"message,omitempty"`
Expand Down
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