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fix: add newline separation for Claude Code system prompt

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This commit is contained in:
cyhhao
2026-01-29 01:28:43 +08:00
parent 59231668c5
commit 31f817d189
2 changed files with 7 additions and 4 deletions
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9
backend/internal/service/gateway_service.go
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@@ -39,7 +39,9 @@ const (
claudeAPICountTokensURL = "https://api.anthropic.com/v1/messages/count_tokens?beta=true"
stickySessionTTL = time.Hour // 粘性会话TTL
defaultMaxLineSize = 40 * 1024 * 1024
claudeCodeSystemPrompt = "You are Claude Code, Anthropic's official CLI for Claude."
// Keep a trailing blank line so that when upstream concatenates system strings,
// the injected Claude Code banner doesn't run into the next system instruction.
claudeCodeSystemPrompt = "You are Claude Code, Anthropic's official CLI for Claude.\n\n"
maxCacheControlBlocks = 4 // Anthropic API 允许的最大 cache_control 块数量
)
@@ -2479,7 +2481,8 @@ func injectClaudeCodePrompt(body []byte, system any) []byte {
case nil:
newSystem = []any{claudeCodeBlock}
case string:
if v == "" || v == claudeCodeSystemPrompt {
// Be tolerant of older/newer clients that may differ only by trailing whitespace/newlines.
if strings.TrimSpace(v) == "" || strings.TrimSpace(v) == strings.TrimSpace(claudeCodeSystemPrompt) {
newSystem = []any{claudeCodeBlock}
} else {
newSystem = []any{claudeCodeBlock, map[string]any{"type": "text", "text": v}}
@@ -2489,7 +2492,7 @@ func injectClaudeCodePrompt(body []byte, system any) []byte {
newSystem = append(newSystem, claudeCodeBlock)
for _, item := range v {
if m, ok := item.(map[string]any); ok {
if text, ok := m["text"].(string); ok && text == claudeCodeSystemPrompt {
if text, ok := m["text"].(string); ok && strings.TrimSpace(text) == strings.TrimSpace(claudeCodeSystemPrompt) {
continue
}
}