feat: make summarization message threshold and token percent configurable (#854)

pkg/agent/instance.go

@@ -25,6 +25,8 @@ type AgentInstance struct {
 	MaxTokens                 int
 	Temperature               float64
 	ContextWindow             int
+	SummarizeMessageThreshold int
+	SummarizeTokenPercent     int
 	Provider                  providers.LLMProvider
 	Sessions                  *session.SessionManager
 	ContextBuilder            *ContextBuilder
@@ -93,6 +95,16 @@ func NewAgentInstance(
 		temperature = *defaults.Temperature
 	}
 
+	summarizeMessageThreshold := defaults.SummarizeMessageThreshold
+	if summarizeMessageThreshold == 0 {
+		summarizeMessageThreshold = 20
+	}
+
+	summarizeTokenPercent := defaults.SummarizeTokenPercent
+	if summarizeTokenPercent == 0 {
+		summarizeTokenPercent = 75
+	}
+
 	// Resolve fallback candidates
 	modelCfg := providers.ModelConfig{
 		Primary:   model,
@@ -150,6 +162,8 @@ func NewAgentInstance(
 		MaxTokens:                 maxTokens,
 		Temperature:               temperature,
 		ContextWindow:             maxTokens,
+		SummarizeMessageThreshold: summarizeMessageThreshold,
+		SummarizeTokenPercent:     summarizeTokenPercent,
 		Provider:                  provider,
 		Sessions:                  sessionsManager,
 		ContextBuilder:            contextBuilder,

pkg/agent/loop.go

@@ -958,9 +958,9 @@ func (al *AgentLoop) updateToolContexts(agent *AgentInstance, channel, chatID st
 func (al *AgentLoop) maybeSummarize(agent *AgentInstance, sessionKey, channel, chatID string) {
 	newHistory := agent.Sessions.GetHistory(sessionKey)
 	tokenEstimate := al.estimateTokens(newHistory)
-	threshold := agent.ContextWindow * 75 / 100
+	threshold := agent.ContextWindow * agent.SummarizeTokenPercent / 100
 
-	if len(newHistory) > 20 || tokenEstimate > threshold {
+	if len(newHistory) > agent.SummarizeMessageThreshold || tokenEstimate > threshold {
 		summarizeKey := agent.ID + ":" + sessionKey
 		if _, loading := al.summarizing.LoadOrStore(summarizeKey, true); !loading {
 			go func() {

pkg/config/config.go

@@ -179,6 +179,8 @@ type AgentDefaults struct {
 	MaxTokens                 int      `json:"max_tokens"                      env:"PICOCLAW_AGENTS_DEFAULTS_MAX_TOKENS"`
 	Temperature               *float64 `json:"temperature,omitempty"           env:"PICOCLAW_AGENTS_DEFAULTS_TEMPERATURE"`
 	MaxToolIterations         int      `json:"max_tool_iterations"             env:"PICOCLAW_AGENTS_DEFAULTS_MAX_TOOL_ITERATIONS"`
+	SummarizeMessageThreshold int      `json:"summarize_message_threshold"     env:"PICOCLAW_AGENTS_DEFAULTS_SUMMARIZE_MESSAGE_THRESHOLD"`
+	SummarizeTokenPercent     int      `json:"summarize_token_percent"         env:"PICOCLAW_AGENTS_DEFAULTS_SUMMARIZE_TOKEN_PERCENT"`
 }
 
 // GetModelName returns the effective model name for the agent defaults.

pkg/config/config_test.go

@@ -435,6 +435,18 @@ func TestLoadConfig_WebToolsProxy(t *testing.T) {
 }
 
 // TestDefaultConfig_DMScope verifies the default dm_scope value
+// TestDefaultConfig_SummarizationThresholds verifies summarization defaults
+func TestDefaultConfig_SummarizationThresholds(t *testing.T) {
+	cfg := DefaultConfig()
+
+	if cfg.Agents.Defaults.SummarizeMessageThreshold != 20 {
+		t.Errorf("SummarizeMessageThreshold = %d, want 20", cfg.Agents.Defaults.SummarizeMessageThreshold)
+	}
+	if cfg.Agents.Defaults.SummarizeTokenPercent != 75 {
+		t.Errorf("SummarizeTokenPercent = %d, want 75", cfg.Agents.Defaults.SummarizeTokenPercent)
+	}
+}
+
 func TestDefaultConfig_DMScope(t *testing.T) {
 	cfg := DefaultConfig()
 

pkg/config/defaults.go

@@ -17,6 +17,8 @@ func DefaultConfig() *Config {
 				MaxTokens:                 32768,
 				Temperature:               nil, // nil means use provider default
 				MaxToolIterations:         50,
+				SummarizeMessageThreshold: 20,
+				SummarizeTokenPercent:     75,
 			},
 		},
 		Bindings: []AgentBinding{},