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perf: eliminate redundant API calls on startup (#1067)

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Co-authored-by: cpacker <packercharles@gmail.com>
Co-authored-by: Letta <noreply@letta.com>
This commit is contained in:
Kian Jones
2026-02-20 16:59:45 -08:00
committed by GitHub
parent 539ce175e5
commit c5033666b4
4 changed files with 76 additions and 63 deletions
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90
src/index.ts
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@@ -1074,6 +1074,10 @@ async function main(): Promise<void> {
const [selectedGlobalAgentId, setSelectedGlobalAgentId] = useState<
string | null
>(null);
// Cache agent object from Phase 1 validation to avoid redundant re-fetch in Phase 2
const [validatedAgent, setValidatedAgent] = useState<AgentState | null>(
null,
);
// Track agent and conversation for conversation selector (--resume flag)
const [resumeAgentId, setResumeAgentId] = useState<string | null>(null);
const [resumeAgentName, setResumeAgentName] = useState<string | null>(null);
@@ -1384,11 +1388,13 @@ async function main(): Promise<void> {
}
// Step 1: Check local project LRU (session helpers centralize legacy fallback)
// Cache the retrieved agent to avoid redundant re-fetch in init()
const localAgentId = settingsManager.getLocalLastAgentId(process.cwd());
let localAgentExists = false;
let cachedAgent: AgentState | null = null;
if (localAgentId) {
try {
await client.agents.retrieve(localAgentId);
cachedAgent = await client.agents.retrieve(localAgentId);
localAgentExists = true;
} catch {
setFailedAgentMessage(
@@ -1402,7 +1408,7 @@ async function main(): Promise<void> {
let globalAgentExists = false;
if (globalAgentId && globalAgentId !== localAgentId) {
try {
await client.agents.retrieve(globalAgentId);
cachedAgent = await client.agents.retrieve(globalAgentId);
globalAgentExists = true;
} catch {
// Global agent doesn't exist either
@@ -1432,6 +1438,9 @@ async function main(): Promise<void> {
switch (target.action) {
case "resume":
setSelectedGlobalAgentId(target.agentId);
if (cachedAgent && cachedAgent.id === target.agentId) {
setValidatedAgent(cachedAgent);
}
// Don't set selectedConversationId — DEFAULT PATH uses default conv.
// Conversation restoration is handled by --continue path instead.
setLoadingState("assembling");
@@ -1695,10 +1704,13 @@ async function main(): Promise<void> {
// Priority 4: Try to resume from project settings LRU (.letta/settings.local.json)
// Note: If LRU retrieval failed in early validation, we already showed selector and returned
// This block handles the case where we have a valid resumingAgentId from early validation
// Use cached agent from Phase 1 validation when available to avoid redundant API call
if (!agent && resumingAgentId) {
try {
agent = await client.agents.retrieve(resumingAgentId);
agent =
validatedAgent && validatedAgent.id === resumingAgentId
? validatedAgent
: await client.agents.retrieve(resumingAgentId);
} catch (error) {
// Agent disappeared between validation and now - show selector
console.error(
@@ -1746,38 +1758,19 @@ async function main(): Promise<void> {
settingsManager.updateLocalProjectSettings({ lastAgent: agent.id });
settingsManager.updateSettings({ lastAgent: agent.id });
// Migration (LET-7353): Remove legacy skills/loaded_skills blocks
// These blocks are no longer used - skills are now injected via system reminders
for (const label of ["skills", "loaded_skills"]) {
try {
const block = await client.agents.blocks.retrieve(label, {
agent_id: agent.id,
});
if (block) {
await client.agents.blocks.detach(block.id, {
agent_id: agent.id,
});
await client.blocks.delete(block.id);
}
} catch {
// Block doesn't exist or already removed, skip
}
}
// Set agent context for tools that need it (e.g., Skill tool)
setAgentContext(agent.id, skillsDirectory, resolvedSkillSources);
// Apply memfs flags and auto-enable from server tag when local settings are missing.
// Start memfs sync early — awaited in parallel with getResumeData below
const isSubagent = process.env.LETTA_CODE_AGENT_ROLE === "subagent";
try {
const { applyMemfsFlags } = await import("./agent/memoryFilesystem");
await applyMemfsFlags(agent.id, memfsFlag, noMemfsFlag, {
agentTags: agent.tags,
});
} catch (error) {
console.error(error instanceof Error ? error.message : String(error));
process.exit(1);
}
const agentId = agent.id;
const agentTags = agent.tags ?? undefined;
const memfsSyncPromise = import("./agent/memoryFilesystem").then(
({ applyMemfsFlags }) =>
applyMemfsFlags(agentId, memfsFlag, noMemfsFlag, {
agentTags,
}),
);
// Check if we're resuming an existing agent
// We're resuming if:
@@ -1851,12 +1844,10 @@ async function main(): Promise<void> {
setResumedExistingConversation(true);
try {
// Load message history and pending approvals from the conversation
// Re-fetch agent to get fresh message_ids for accurate pending approval detection
setLoadingState("checking");
const freshAgent = await client.agents.retrieve(agent.id);
const data = await getResumeData(
client,
freshAgent,
agent,
specifiedConversationId,
);
setResumeData(data);
@@ -1890,12 +1881,10 @@ async function main(): Promise<void> {
// If it no longer exists, fall back to creating new
try {
// Load message history and pending approvals from the conversation
// Re-fetch agent to get fresh message_ids for accurate pending approval detection
setLoadingState("checking");
const freshAgent = await client.agents.retrieve(agent.id);
const data = await getResumeData(
client,
freshAgent,
agent,
lastSession.conversationId,
);
// Only set state after validation succeeds
@@ -1933,10 +1922,9 @@ async function main(): Promise<void> {
// User selected a specific conversation from the --resume selector
try {
setLoadingState("checking");
const freshAgent = await client.agents.retrieve(agent.id);
const data = await getResumeData(
client,
freshAgent,
agent,
selectedConversationId,
);
conversationIdToUse = selectedConversationId;
@@ -1963,14 +1951,29 @@ async function main(): Promise<void> {
// Default (including --new-agent): use the agent's "default" conversation
conversationIdToUse = "default";
// Load message history from the default conversation
// Load message history and memfs sync in parallel — they're independent
setLoadingState("checking");
const freshAgent = await client.agents.retrieve(agent.id);
const data = await getResumeData(client, freshAgent, "default");
const [data] = await Promise.all([
getResumeData(client, agent, "default"),
memfsSyncPromise.catch((error) => {
console.error(
error instanceof Error ? error.message : String(error),
);
process.exit(1);
}),
]);
setResumeData(data);
setResumedExistingConversation(true);
}
// Ensure memfs sync completed (already resolved for default path via Promise.all above)
try {
await memfsSyncPromise;
} catch (error) {
console.error(error instanceof Error ? error.message : String(error));
process.exit(1);
}
// Save the session (agent + conversation) to settings
// Skip for subagents - they shouldn't pollute the LRU settings
if (!isSubagent) {
@@ -2011,6 +2014,7 @@ async function main(): Promise<void> {
fromAfFile,
loadingState,
selectedGlobalAgentId,
validatedAgent,
shouldContinue,
resumeAgentId,
selectedConversationId,