Skip to content

feat(providers): log prompt cache tokens in LLM response debug output #3317

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
vmuliadi-astro wants to merge 3 commits into
base: main
Choose a base branch
from
Open

feat(providers): log prompt cache tokens in LLM response debug output #3317

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
f2ed085
feat(providers): log prompt cache tokens in LLM response debug output
vmuliadi-astro Aug 4, 2026
8ce3d36
feat(agent): log prompt cache tokens in LLM response debug output
vmuliadi-astro Aug 4, 2026
0fc42d6
fix(agent): rebase cache-token logging onto current main
vmuliadi-astro Aug 4, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions pkg/agent/pipeline_llm.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -564,6 +564,15 @@ func (p *Pipeline) CallLLM(
llmResponseFields["prompt_tokens"] = exec.response.Usage.PromptTokens
llmResponseFields["completion_tokens"] = exec.response.Usage.CompletionTokens
llmResponseFields["total_tokens"] = exec.response.Usage.TotalTokens
if exec.response.Usage.PromptCacheHitTokens != nil {
llmResponseFields["prompt_cache_hit_tokens"] = *exec.response.Usage.PromptCacheHitTokens
}
if exec.response.Usage.PromptCacheMissTokens != nil {
llmResponseFields["prompt_cache_miss_tokens"] = *exec.response.Usage.PromptCacheMissTokens
}
if exec.response.Usage.PromptTokensDetails != nil {
llmResponseFields["cached_tokens"] = exec.response.Usage.PromptTokensDetails.CachedTokens
}
}
logger.DebugCF("agent", "LLM response", llmResponseFields)

Expand Down
13 changes: 13 additions & 0 deletions pkg/providers/protocoltypes/types.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,19 @@ type UsageInfo struct {
PromptTokens int `json:"prompt_tokens"`
CompletionTokens int `json:"completion_tokens"`
TotalTokens int `json:"total_tokens"`

// Cache metadata (optional). DeepSeek reports prompt_cache_hit_tokens /
// prompt_cache_miss_tokens; OpenAI-compatible endpoints may report
// prompt_tokens_details.cached_tokens. Pointers distinguish "not reported"
// (nil) from a real zero.
PromptCacheHitTokens *int `json:"prompt_cache_hit_tokens"`
PromptCacheMissTokens *int `json:"prompt_cache_miss_tokens"`
PromptTokensDetails *PromptTokensDetails `json:"prompt_tokens_details"`
}

// PromptTokensDetails carries OpenAI-style prompt token breakdowns.
type PromptTokensDetails struct {
CachedTokens int `json:"cached_tokens"`
}

// CacheControl marks a content block for LLM-side prefix caching.
Expand Down