- Cap maximum cooldown for rate limit handling in account unavailability and single-model chat flows

- Dynamic custom model fetching for model selection

CHANGELOG.md

@@ -1,3 +1,9 @@
+# v0.4.5 (2026-04-24)
+
+## Improvements
+- Cap maximum cooldown for rate limit handling in account unavailability and single-model chat flows
+- Dynamic custom model fetching for model selection
+
 # v0.4.3 (2026-04-24)
 
 ## Improvements

cloud/src/handlers/chat.js

@@ -2,6 +2,7 @@ import { getModelInfoCore } from "open-sse/services/model.js";
 import { handleChatCore } from "open-sse/handlers/chatCore.js";
 import { errorResponse } from "open-sse/utils/error.js";
 import { checkFallbackError, isAccountUnavailable, getUnavailableUntil, getEarliestRateLimitedUntil, formatRetryAfter } from "open-sse/services/accountFallback.js";
+import { MAX_RATE_LIMIT_COOLDOWN_MS } from "open-sse/config/errorConfig.js";
 import { getComboModelsFromData, handleComboChat } from "open-sse/services/combo.js";
 import { HTTP_STATUS } from "open-sse/config/runtimeConfig.js";
 import * as log from "../utils/logger.js";
@@ -253,7 +254,7 @@ async function markAccountUnavailable(machineId, connectionId, status, errorText
   // Provider-specific precise cooldown (e.g. codex usage_limit_reached) overrides backoff
   let cooldownMs, newBackoffLevel;
   if (resetsAtMs && resetsAtMs > Date.now()) {
-    cooldownMs = resetsAtMs - Date.now();
+    cooldownMs = Math.min(resetsAtMs - Date.now(), MAX_RATE_LIMIT_COOLDOWN_MS);
     newBackoffLevel = 0;
   } else {
     ({ cooldownMs, newBackoffLevel } = checkFallbackError(status, errorText, backoffLevel));

open-sse/config/errorConfig.js

@@ -38,6 +38,9 @@ export const BACKOFF_CONFIG = {
 // Default cooldown for transient/unknown errors
 export const TRANSIENT_COOLDOWN_MS = 30 * 1000;
 
+// Hard cap for provider-reported rate limit cooldown (e.g. codex resets_at can be 5-6h)
+export const MAX_RATE_LIMIT_COOLDOWN_MS = 30 * 60 * 1000;
+
 // Cooldown durations (ms)
 const COOLDOWN = {
   long: 2 * 60 * 1000,

open-sse/config/providerModels.js

@@ -219,7 +219,6 @@ export const PROVIDER_MODELS = {
     // Gemini 3.1 series
     { id: "gemini-3.1-pro-preview", name: "Gemini 3.1 Pro Preview" },
     { id: "gemini-3.1-flash-lite-preview", name: "Gemini 3.1 Flash Lite Preview" },
-    { id: "gemini-3.1-flash-image-preview", name: "Gemini 3.1 Flash Image Preview" },
     // Gemini 3 series
     { id: "gemini-3-flash-preview", name: "Gemini 3 Flash Preview" },
     // Gemini 2.5 series
@@ -342,6 +341,7 @@ export const PROVIDER_MODELS = {
     { id: "DeepSeek-V3.2", name: "DeepSeek-V3.2" },
   ],
   deepseek: [
+    { id: "deepseek-v4-flash", name: "DeepSeek V4 Flash" },
     { id: "deepseek-chat", name: "DeepSeek V3.2 Chat" },
     { id: "deepseek-reasoner", name: "DeepSeek V3.2 Reasoner" },
   ],

open-sse/handlers/chatCore.js

@@ -24,7 +24,7 @@ import { detectClientTool, isNativePassthrough } from "../utils/clientDetector.j
  * @param {object} options.credentials - Provider credentials
  * @param {string} options.sourceFormatOverride - Override detected source format (e.g. "openai-responses")
  */
-export async function handleChatCore({ body, modelInfo, credentials, log, onCredentialsRefreshed, onRequestSuccess, onDisconnect, clientRawRequest, connectionId, userAgent, apiKey, ccFilterNaming, sourceFormatOverride, providerThinking }) {
+export async function handleChatCore({ body, modelInfo, credentials, log, onCredentialsRefreshed, onRequestSuccess, onDisconnect, clientRawRequest, connectionId, userAgent, apiKey, ccFilterNaming, rtkEnabled, sourceFormatOverride, providerThinking }) {
   const { provider, model } = modelInfo;
   const requestStartTime = Date.now();
 
@@ -82,7 +82,7 @@ export async function handleChatCore({ body, modelInfo, credentials, log, onCred
     log?.debug?.("PASSTHROUGH", `${clientTool} → ${provider} | native lossless`);
     translatedBody = { ...body, model };
   } else {
-    translatedBody = translateRequest(sourceFormat, targetFormat, model, body, stream, credentials, provider, reqLogger, stripList, connectionId);
+    translatedBody = translateRequest(sourceFormat, targetFormat, model, body, stream, credentials, provider, reqLogger, stripList, connectionId, rtkEnabled);
     if (!translatedBody) {
       trackPendingRequest(model, provider, connectionId, false, true);
       return createErrorResult(HTTP_STATUS.BAD_REQUEST, `Failed to translate request for ${sourceFormat} → ${targetFormat}`);

open-sse/rtk/flag.js

@@ -1,11 +0,0 @@
-// Synchronous RTK toggle cache. Updated by /api/settings PATCH handler
-// and initialized from DB on server boot.
-let enabled = false;
-
-export function setRtkEnabled(value) {
-  enabled = Boolean(value);
-}
-
-export function isRtkEnabled() {
-  return enabled;
-}

open-sse/rtk/index.js

@@ -3,21 +3,38 @@
 import { RAW_CAP, MIN_COMPRESS_SIZE } from "./constants.js";
 import { autoDetectFilter } from "./autodetect.js";
 import { safeApply } from "./applyFilter.js";
-import { isRtkEnabled } from "./flag.js";
-
-export { isRtkEnabled, setRtkEnabled } from "./flag.js";
 
 // Compress tool_result content in-place. Returns stats or null if disabled/failed.
-export function compressMessages(body) {
-  if (!isRtkEnabled()) return null;
-  if (!body || !Array.isArray(body.messages)) return null;
+export function compressMessages(body, enabled) {
+  if (!enabled) return null;
+  if (!body) return null;
+  // Support both OpenAI/Claude "messages" and OpenAI Responses "input"
+  const items = Array.isArray(body.messages) ? body.messages
+    : Array.isArray(body.input) ? body.input
+    : null;
+  if (!items) return null;
 
   const stats = { bytesBefore: 0, bytesAfter: 0, hits: [] };
   try {
-    for (let i = 0; i < body.messages.length; i++) {
-      const msg = body.messages[i];
+    for (let i = 0; i < items.length; i++) {
+      const msg = items[i];
       if (!msg) continue;
 
+      // Shape 4: OpenAI Responses — top-level { type:"function_call_output", output: string | [{type:"input_text", text}] }
+      if (msg.type === "function_call_output") {
+        if (typeof msg.output === "string") {
+          msg.output = compressText(msg.output, stats, "openai-responses-string");
+        } else if (Array.isArray(msg.output)) {
+          for (let k = 0; k < msg.output.length; k++) {
+            const part = msg.output[k];
+            if (part && part.type === "input_text" && typeof part.text === "string") {
+              part.text = compressText(part.text, stats, "openai-responses-array");
+            }
+          }
+        }
+        continue;
+      }
+
       // Shape 1: OpenAI tool message — { role:"tool", content: "string" }
       if (msg.role === "tool" && typeof msg.content === "string") {
         msg.content = compressText(msg.content, stats, "openai-tool");

open-sse/services/combo.js

@@ -39,6 +39,15 @@ export function getRotatedModels(models, comboName, strategy) {
   return rotatedModels;
 }
 
+/**
+ * Reset in-memory rotation state when combo/settings change
+ * @param {string} [comboName] - Combo name to reset; omit to clear all
+ */
+export function resetComboRotation(comboName) {
+  if (comboName) comboRotationState.delete(comboName);
+  else comboRotationState.clear();
+}
+
 /**
  * Get combo models from combos data
  * @param {string} modelStr - Model string to check

open-sse/translator/index.js

@@ -71,12 +71,12 @@ function stripContentTypes(body, stripList = []) {
 }
 
 // Translate request: source -> openai -> target
-export function translateRequest(sourceFormat, targetFormat, model, body, stream = true, credentials = null, provider = null, reqLogger = null, stripList = [], connectionId = null) {
+export function translateRequest(sourceFormat, targetFormat, model, body, stream = true, credentials = null, provider = null, reqLogger = null, stripList = [], connectionId = null, rtkEnabled = false) {
   ensureInitialized();
   let result = body;
 
   // RTK: compress tool_result content before any translation (shape-agnostic)
-  const rtkStats = compressMessages(result);
+  const rtkStats = compressMessages(result, rtkEnabled);
   if (rtkStats) {
     const line = formatRtkLog(rtkStats);
     if (line) console.log(line);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "9router-app",
-  "version": "0.4.3",
+  "version": "0.4.5",
   "description": "9Router web dashboard",
   "private": true,
   "scripts": {

src/app/(dashboard)/dashboard/cli-tools/components/CodexToolCard.js

@@ -174,6 +174,7 @@ model = "${effectiveSubagentModel}"
 `;
 
     const authContent = JSON.stringify({
+      auth_mode: "apikey",
       OPENAI_API_KEY: keyToUse
     }, null, 2);
 

src/app/api/cli-tools/codex-settings/route.js

@@ -159,7 +159,9 @@ export async function POST(request) {
       authData = JSON.parse(existingAuth);
     } catch { /* No existing auth */ }
     
+    // Force apikey mode (keep existing tokens untouched for ChatGPT login reuse)
     authData.OPENAI_API_KEY = apiKey;
+    authData.auth_mode = "apikey";
     await fs.writeFile(authPath, JSON.stringify(authData, null, 2));
 
     return NextResponse.json({
@@ -215,7 +217,8 @@ export async function DELETE() {
       const existingAuth = await fs.readFile(authPath, "utf-8");
       const authData = JSON.parse(existingAuth);
       delete authData.OPENAI_API_KEY;
-      
+      delete authData.auth_mode;
+
       // Write back or delete if empty
       if (Object.keys(authData).length === 0) {
         await fs.unlink(authPath);

src/app/api/combos/[id]/route.js

@@ -1,5 +1,6 @@
 import { NextResponse } from "next/server";
 import { getComboById, updateCombo, deleteCombo, getComboByName } from "@/lib/localDb";
+import { resetComboRotation } from "open-sse/services/combo.js";
 
 // Validate combo name: only a-z, A-Z, 0-9, -, _
 const VALID_NAME_REGEX = /^[a-zA-Z0-9_.\-]+$/;
@@ -40,12 +41,18 @@ export async function PUT(request, { params }) {
       }
     }
     
+    // Capture previous name to invalidate rotation state on rename
+    const prev = await getComboById(id);
     const combo = await updateCombo(id, body);
     
     if (!combo) {
       return NextResponse.json({ error: "Combo not found" }, { status: 404 });
     }
 
+    // Invalidate rotation state (models/strategy/name may have changed)
+    if (prev?.name) resetComboRotation(prev.name);
+    if (combo.name && combo.name !== prev?.name) resetComboRotation(combo.name);
+
     return NextResponse.json(combo);
   } catch (error) {
     console.log("Error updating combo:", error);
@@ -57,11 +64,14 @@ export async function PUT(request, { params }) {
 export async function DELETE(request, { params }) {
   try {
     const { id } = await params;
+    const prev = await getComboById(id);
     const success = await deleteCombo(id);
     
     if (!success) {
       return NextResponse.json({ error: "Combo not found" }, { status: 404 });
     }
+
+    if (prev?.name) resetComboRotation(prev.name);
     
     return NextResponse.json({ success: true });
   } catch (error) {

src/app/api/settings/route.js

@@ -1,7 +1,7 @@
 import { NextResponse } from "next/server";
 import { getSettings, updateSettings } from "@/lib/localDb";
 import { applyOutboundProxyEnv } from "@/lib/network/outboundProxy";
-import { setRtkEnabled } from "open-sse/rtk/flag.js";
+import { resetComboRotation } from "open-sse/services/combo.js";
 import bcrypt from "bcryptjs";
 
 export async function GET() {
@@ -67,10 +67,14 @@ export async function PATCH(request) {
       applyOutboundProxyEnv(settings);
     }
 
-    // Sync RTK toggle immediately (sync cache for request hot path)
-    if (Object.prototype.hasOwnProperty.call(body, "rtkEnabled")) {
-      setRtkEnabled(settings.rtkEnabled);
+    // Invalidate combo rotation state when strategy settings change
+    if (
+      Object.prototype.hasOwnProperty.call(body, "comboStrategy") ||
+      Object.prototype.hasOwnProperty.call(body, "comboStrategies")
+    ) {
+      resetComboRotation();
     }
+
     const { password, ...safeSettings } = settings;
     return NextResponse.json(safeSettings);
   } catch (error) {

src/app/layout.js

@@ -3,7 +3,6 @@ import "./globals.css";
 import { ThemeProvider } from "@/shared/components/ThemeProvider";
 import "@/lib/initCloudSync"; // Auto-initialize cloud sync
 import "@/lib/network/initOutboundProxy"; // Auto-initialize outbound proxy env
-import "@/lib/rtk/initRtk"; // Auto-initialize RTK toggle from DB
 import { initConsoleLogCapture } from "@/lib/consoleLogBuffer";
 import { RuntimeI18nProvider } from "@/i18n/RuntimeI18nProvider";
 

src/lib/rtk/initRtk.js

@@ -1,20 +0,0 @@
-import { getSettings } from "@/lib/localDb";
-import { setRtkEnabled } from "open-sse/rtk/flag.js";
-
-let initialized = false;
-
-export async function ensureRtkInitialized() {
-  if (initialized) return true;
-  try {
-    const settings = await getSettings();
-    setRtkEnabled(settings.rtkEnabled === true);
-    initialized = true;
-  } catch (error) {
-    console.error("[ServerInit] Error initializing RTK flag:", error);
-  }
-  return initialized;
-}
-
-ensureRtkInitialized().catch(console.log);
-
-export default ensureRtkInitialized;

src/shared/components/ModelSelectModal.js

@@ -3,8 +3,8 @@
 import { useState, useMemo, useEffect } from "react";
 import PropTypes from "prop-types";
 import Modal from "./Modal";
-import { getModelsByProviderId, PROVIDER_ID_TO_ALIAS } from "@/shared/constants/models";
-import { OAUTH_PROVIDERS, APIKEY_PROVIDERS, FREE_PROVIDERS, FREE_TIER_PROVIDERS, isOpenAICompatibleProvider, isAnthropicCompatibleProvider } from "@/shared/constants/providers";
+import { getModelsByProviderId } from "@/shared/constants/models";
+import { OAUTH_PROVIDERS, APIKEY_PROVIDERS, FREE_PROVIDERS, FREE_TIER_PROVIDERS, isOpenAICompatibleProvider, isAnthropicCompatibleProvider, getProviderAlias } from "@/shared/constants/providers";
 
 // Provider order: OAuth first, then Free Tier, then API Key (matches dashboard/providers)
 const PROVIDER_ORDER = [
@@ -29,6 +29,7 @@ export default function ModelSelectModal({
   const [searchQuery, setSearchQuery] = useState("");
   const [combos, setCombos] = useState([]);
   const [providerNodes, setProviderNodes] = useState([]);
+  const [customModels, setCustomModels] = useState([]);
 
   const fetchCombos = async () => {
     try {
@@ -62,6 +63,22 @@ export default function ModelSelectModal({
     if (isOpen) fetchProviderNodes();
   }, [isOpen]);
 
+  const fetchCustomModels = async () => {
+    try {
+      const res = await fetch("/api/models/custom");
+      if (!res.ok) throw new Error(`Failed to fetch custom models: ${res.status}`);
+      const data = await res.json();
+      setCustomModels(data.models || []);
+    } catch (error) {
+      console.error("Error fetching custom models:", error);
+      setCustomModels([]);
+    }
+  };
+
+  useEffect(() => {
+    if (isOpen) fetchCustomModels();
+  }, [isOpen]);
+
   const allProviders = useMemo(() => ({ ...OAUTH_PROVIDERS, ...FREE_PROVIDERS, ...FREE_TIER_PROVIDERS, ...APIKEY_PROVIDERS }), []);
 
   // Group models by provider with priority order
@@ -85,7 +102,7 @@ export default function ModelSelectModal({
     });
 
     sortedProviderIds.forEach((providerId) => {
-      const alias = PROVIDER_ID_TO_ALIAS[providerId] || providerId;
+      const alias = getProviderAlias(providerId);
       const providerInfo = allProviders[providerId] || { name: providerId, color: "#666" };
       const isCustomProvider = isOpenAICompatibleProvider(providerId) || isAnthropicCompatibleProvider(providerId);
 
@@ -151,7 +168,7 @@ export default function ModelSelectModal({
         // Custom models: if no hardcoded models (e.g. openrouter), show all aliases for this provider
         // Otherwise only show aliases where aliasName === modelId ("Add Model" button pattern)
         const hasHardcoded = hardcodedModels.length > 0;
-        const customModels = Object.entries(modelAliases)
+        const customAliasModels = Object.entries(modelAliases)
           .filter(([aliasName, fullModel]) =>
             fullModel.startsWith(`${alias}/`) &&
             (hasHardcoded ? aliasName === fullModel.replace(`${alias}/`, "") : true) &&
@@ -162,9 +179,16 @@ export default function ModelSelectModal({
             return { id: modelId, name: aliasName, value: fullModel, isCustom: true };
           });
 
+        // Custom models registered via /api/models/custom (provider "Add Model" button)
+        const customAliasIds = new Set(customAliasModels.map((m) => m.id));
+        const customRegisteredModels = customModels
+          .filter((m) => m.providerAlias === alias && !hardcodedIds.has(m.id) && !customAliasIds.has(m.id))
+          .map((m) => ({ id: m.id, name: m.name || m.id, value: `${alias}/${m.id}`, isCustom: true }));
+
         const allModels = [
           ...hardcodedModels.map((m) => ({ id: m.id, name: m.name, value: `${alias}/${m.id}` })),
-          ...customModels,
+          ...customAliasModels,
+          ...customRegisteredModels,
         ];
 
         if (allModels.length > 0) {
@@ -179,7 +203,7 @@ export default function ModelSelectModal({
     });
 
     return groups;
-  }, [activeProviders, modelAliases, allProviders, providerNodes]);
+  }, [activeProviders, modelAliases, allProviders, providerNodes, customModels]);
 
   // Filter combos by search query
   const filteredCombos = useMemo(() => {
@@ -304,7 +328,7 @@ export default function ModelSelectModal({
                 const isPlaceholder = model.isPlaceholder;
                 return (
                   <button
-                    key={model.id}
+                    key={model.value}
                     onClick={() => handleSelect(model)}
                     title={isPlaceholder ? "Select to pre-fill, then edit model ID in the input" : undefined}
                     className={`

src/sse/handlers/chat.js

@@ -206,6 +206,7 @@ async function handleSingleModelChat(body, modelStr, clientRawRequest = null, re
       userAgent,
       apiKey,
       ccFilterNaming: !!chatSettings.ccFilterNaming,
+      rtkEnabled: !!chatSettings.rtkEnabled,
       providerThinking,
       // Detect source format by endpoint + body
       sourceFormatOverride: request?.url ? detectFormatByEndpoint(new URL(request.url).pathname, body) : null,

src/sse/services/auth.js

@@ -1,6 +1,7 @@
 import { getProviderConnections, validateApiKey, updateProviderConnection, getSettings } from "@/lib/localDb";
 import { resolveConnectionProxyConfig } from "@/lib/network/connectionProxy";
 import { formatRetryAfter, checkFallbackError, isModelLockActive, buildModelLockUpdate, getEarliestModelLockUntil } from "open-sse/services/accountFallback.js";
+import { MAX_RATE_LIMIT_COOLDOWN_MS } from "open-sse/config/errorConfig.js";
 import { resolveProviderId, FREE_PROVIDERS } from "@/shared/constants/providers.js";
 import * as log from "../utils/logger.js";
 
@@ -179,7 +180,7 @@ export async function markAccountUnavailable(connectionId, status, errorText, pr
   let shouldFallback, cooldownMs, newBackoffLevel;
   if (resetsAtMs && resetsAtMs > Date.now()) {
     shouldFallback = true;
-    cooldownMs = resetsAtMs - Date.now();
+    cooldownMs = Math.min(resetsAtMs - Date.now(), MAX_RATE_LIMIT_COOLDOWN_MS);
     newBackoffLevel = 0;
   } else {
     ({ shouldFallback, cooldownMs, newBackoffLevel } = checkFallbackError(status, errorText, backoffLevel));