diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 18550d56..d4f6f299 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.0.4"
+  ".": "3.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4b21136f..dc724ff4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [3.0.0](https://github.com/zbirenbaum/copilot.lua/compare/v2.0.4...v3.0.0) (2026-06-11)
+
+
+### ⚠ BREAKING CHANGES
+
+* remove support for apps.json as it is not used anymore by LSP
+
+### Bug Fixes
+
+* remove support for apps.json as it is not used anymore by LSP ([6afee36](https://github.com/zbirenbaum/copilot.lua/commit/6afee363c52b6063a11b409ed20a3f1ab95325ab))
+
 ## [2.0.4](https://github.com/zbirenbaum/copilot.lua/compare/v2.0.3...v2.0.4) (2026-05-15)
 
 
diff --git a/README.md b/README.md
index 1dd5b95b..c0c3c8fb 100644
--- a/README.md
+++ b/README.md
@@ -97,15 +97,15 @@ To sign in with a different account:
 :Copilot auth signin
 ```
 
-To view your current authentication token information:
+To view your current authentication status:
 
 ```
 :Copilot auth info
 ```
 
-Credentials are stored in:
-- **Linux/macOS:** `~/.config/github-copilot/apps.json` (or `$XDG_CONFIG_HOME/github-copilot/apps.json`)
-- **Windows:** `~/AppData/Local/github-copilot/apps.json`
+Credentials are stored by the Copilot Language Server in:
+- **Linux/macOS:** `~/.config/github-copilot/auth.db` (or `$XDG_CONFIG_HOME/github-copilot/auth.db`)
+- **Windows:** `~/AppData/Local/github-copilot/auth.db`
 
 </details>
 
diff --git a/lua/copilot/auth/init.lua b/lua/copilot/auth/init.lua
index c9d60a50..14a165ef 100644
--- a/lua/copilot/auth/init.lua
+++ b/lua/copilot/auth/init.lua
@@ -152,34 +152,26 @@ function M.find_config_path()
   logger.error("could not find config path")
 end
 
----@return table|nil
-function M.get_creds()
-  local filename = M.find_config_path() .. "/github-copilot/apps.json"
-
-  if vim.fn.filereadable(filename) == 0 then
-    logger.error("Copilot auth file could not be read from:" .. filename)
-    return
-  end
-
-  local filedata = vim.api.nvim_eval("readfile('" .. filename .. "')")
-
-  if not filedata or #filedata == 0 then
-    logger.error("Copilot's apps.json file not found or empty, make sure to sign in first")
-    return
-  end
-
-  local appsdata = vim.json.decode(filedata[1])
-  return appsdata
-end
-
 function M.info()
-  local info = M.get_creds()
-  if not info then
-    logger.error("no GitHub Copilot token found, make sure to sign in first")
-    return
-  end
+  c.use_client(function(client)
+    api.check_status(
+      client,
+      {},
+      ---@param status copilot_check_status_data
+      function(err, status)
+        if err then
+          logger.error("failed to retrieve authentication status: " .. tostring(err))
+          return
+        end
 
-  logger.notify("GitHub Copilot token information: ", info)
+        if status.user then
+          logger.notify("Authenticated as GitHub user: " .. status.user .. " (status: " .. status.status .. ")")
+        else
+          logger.error("not authenticated (status: " .. status.status .. "), make sure to sign in first")
+        end
+      end
+    )
+  end)
 end
 
 ---@class copilot_auth_cache
diff --git a/lua/copilot/health.lua b/lua/copilot/health.lua
index ee13b117..7742267f 100644
--- a/lua/copilot/health.lua
+++ b/lua/copilot/health.lua
@@ -1,5 +1,6 @@
 local M = {}
 
+local api = require("copilot.api")
 local auth = require("copilot.auth")
 local c = require("copilot.client")
 local config = require("copilot.config")
@@ -35,13 +36,13 @@ function M.check()
   end
 
   local config_path = auth.find_config_path()
-  local creds_ok, creds = pcall(auth.get_creds)
-  if creds_ok and creds then
-    ok("Local credentials file found")
-    info("Location: `" .. (config_path or "unknown") .. "/github-copilot/apps.json`")
+  local auth_db_path = (config_path or "unknown") .. "/github-copilot/auth.db"
+  if config_path and vim.fn.filereadable(auth_db_path) == 1 then
+    ok("Local credentials found")
+    info("Location: `" .. auth_db_path .. "`")
   else
-    info("No local credentials file found")
-    info("Expected location: `" .. (config_path or "unknown") .. "/github-copilot/apps.json`")
+    info("No local credentials found")
+    info("Expected location: `" .. auth_db_path .. "`")
     info("Run `:Copilot auth` to authenticate")
   end
 
@@ -63,11 +64,39 @@ function M.check()
   ok("LSP client is available and running")
   info("Client ID: " .. tostring(client.id))
 
-  local lsp_authenticated = auth.is_authenticated()
-  if lsp_authenticated then
-    ok("LSP authentication status: authenticated")
+  vim.wait(2000, function()
+    return c.initialized
+  end, 50)
+
+  if not c.initialized then
+    warn("LSP client is running but has not finished initializing")
+    info("This is not an authentication problem, retry `:checkhealth copilot` once Copilot is active")
   else
-    warn("LSP authentication status: not authenticated")
+    local done = false
+    local status_err, status = nil, nil
+    api.check_status(
+      client,
+      {},
+      ---@param status_data copilot_check_status_data
+      function(err, status_data)
+        status_err, status = err, status_data
+        done = true
+      end
+    )
+    vim.wait(5000, function()
+      return done
+    end, 50)
+
+    if not done then
+      warn("LSP authentication status: no response from server (timed out)")
+    elseif status_err then
+      warn("LSP authentication status: " .. tostring(status_err))
+    elseif status and status.user then
+      ok("LSP authentication status: authenticated as `" .. status.user .. "`")
+    else
+      warn("LSP authentication status: not authenticated (status: " .. (status and status.status or "unknown") .. ")")
+      info("Run `:Copilot auth signin` to authenticate")
+    end
   end
   info("For detailed authentication status, run `:Copilot status`")
 
diff --git a/tests/stubs/lsp_server.lua b/tests/stubs/lsp_server.lua
index 314ee79e..5c5712da 100644
--- a/tests/stubs/lsp_server.lua
+++ b/tests/stubs/lsp_server.lua
@@ -2,6 +2,12 @@ local logger = require("copilot.logger")
 local M = {}
 
 M.messages = {}
+
+local numbers_as_arrays_text = "  19,20,21\n  22,23,24\n  25,26,27\n}\n{\n"
+  .. "  28,29,30\n  31,32,33\n  34,35,36\n}\n{\n"
+  .. "  37,38,39\n  40,41,42\n  43,44,45\n}\n{\n"
+  .. "  46,47,48\n  49,50,51\n  52,53,54\n}"
+
 M.completion_responses = {
   ["numbers_with_spaces.txt"] = {
     completions = {
@@ -78,7 +84,7 @@ M.completion_responses = {
   ["numbers_as_arrays.txt"] = {
     completions = {
       {
-        displayText = "  19,20,21\n  22,23,24\n  25,26,27\n}\n{\n  28,29,30\n  31,32,33\n  34,35,36\n}\n{\n  37,38,39\n  40,41,42\n  43,44,45\n}\n{\n  46,47,48\n  49,50,51\n  52,53,54\n}",
+        displayText = numbers_as_arrays_text,
         docVersion = 30,
         position = {
           character = 0,
@@ -94,7 +100,7 @@ M.completion_responses = {
             line = 11,
           },
         },
-        text = "  19,20,21\n  22,23,24\n  25,26,27\n}\n{\n  28,29,30\n  31,32,33\n  34,35,36\n}\n{\n  37,38,39\n  40,41,42\n  43,44,45\n}\n{\n  46,47,48\n  49,50,51\n  52,53,54\n}",
+        text = numbers_as_arrays_text,
         uuid = "1df58ae9-3e93-4e6a-b514-218a9fe7e816",
       },
     },
diff --git a/tests/test_auth.lua b/tests/test_auth.lua
index e96043fe..c51a7276 100644
--- a/tests/test_auth.lua
+++ b/tests/test_auth.lua
@@ -31,7 +31,7 @@ T["auth()"]["auth before attaching, should not give error"] = function()
       return has_passed()
     end, 50)
 
-    return messages 
+    return messages
   ]])
 
   u.expect_match(messages, ".*Authenticated as GitHub user.*")
@@ -66,12 +66,33 @@ T["auth()"]["auth issue replication"] = function()
       return has_passed()
     end, 50)
 
-    return messages 
+    return messages
   ]])
 
   u.expect_match(messages, ".*Online.*")
 end
 
+T["auth()"]["auth info reports authentication status from the LSP"] = function()
+  child.configure_copilot()
+  child.cmd("Copilot auth info")
+
+  local messages = child.lua([[
+    local messages = ""
+    local function has_passed()
+      messages = vim.api.nvim_exec("messages", { output = true }) or ""
+      return string.find(messages, ".*Authenticated as GitHub user: someUser.*") ~= nil
+    end
+
+    vim.wait(5000, function()
+      return has_passed()
+    end, 50)
+
+    return messages
+  ]])
+
+  u.expect_match(messages, ".*Authenticated as GitHub user: someUser.*")
+end
+
 T["auth()"]["is_authenticated when not authed returns false"] = function()
   child.configure_copilot()
 
diff --git a/tests/test_client_lifecycle.lua b/tests/test_client_lifecycle.lua
index f540782d..601d0cde 100644
--- a/tests/test_client_lifecycle.lua
+++ b/tests/test_client_lifecycle.lua
@@ -1,6 +1,5 @@
 local child_helper = require("tests.child_helper")
 local child = child_helper.new_child_neovim("test_client_lifecycle")
-local u = require("tests.utils")
 local eq = MiniTest.expect.equality
 
 local T = MiniTest.new_set({
@@ -31,9 +30,6 @@ T["client lifecycle()"]["ensure_client_started with starting guard prevents dupl
   -- Simulate the guard being set (as if startup is in progress)
   child.lua("c.client_starting = true")
 
-  -- Store original client id
-  local original_id = child.lua("return c.id")
-
   -- Try to start another client - should be blocked by the guard
   child.lua([[
     c.id = nil
diff --git a/tests/test_health.lua b/tests/test_health.lua
index 46274d3d..d0f28f98 100644
--- a/tests/test_health.lua
+++ b/tests/test_health.lua
@@ -1,6 +1,7 @@
 local eq = MiniTest.expect.equality
 local child_helper = require("tests.child_helper")
 local child = child_helper.new_child_neovim("test_health")
+local u = require("tests.utils")
 
 local T = MiniTest.new_set({
   hooks = {
@@ -33,6 +34,28 @@ T["health()"]["check runs without error when client is not started"] = function(
   eq(result, true)
 end
 
+T["health()"]["reports auth.db as local credentials location"] = function()
+  child.configure_copilot()
+  child.cmd("checkhealth copilot")
+
+  local output = child.lua([[
+    return table.concat(vim.api.nvim_buf_get_lines(0, 0, -1, false), "\n")
+  ]])
+
+  u.expect_match(output, "auth%.db")
+end
+
+T["health()"]["reports LSP authentication status without requiring a buffer attach"] = function()
+  child.configure_copilot()
+  child.cmd("checkhealth copilot")
+
+  local output = child.lua([[
+    return table.concat(vim.api.nvim_buf_get_lines(0, 0, -1, false), "\n")
+  ]])
+
+  u.expect_match(output, "authentication status: authenticated as `someUser`")
+end
+
 T["health()"]["check runs without error when client is disabled"] = function()
   child.lua([[
     local lsp = require("copilot.lsp")
diff --git a/tests/test_panel.lua b/tests/test_panel.lua
index 187d58ed..44616299 100644
--- a/tests/test_panel.lua
+++ b/tests/test_panel.lua
@@ -57,7 +57,7 @@ end
 T["panel.utils()"] = MiniTest.new_set()
 
 T["panel.utils()"]["panel_uri_from_doc_uri"] = function()
-  local panel_uri = ""
+  local panel_uri
 
   if vim.fn.has("win32") > 0 then
     panel_uri = "copilot:///C:/Users/antoi/AppData/Local/nvim-data/lazy/copilot.lua/lua/copilot/suggestion/init.lua"
@@ -75,7 +75,7 @@ T["panel.utils()"]["panel_uri_from_doc_uri"] = function()
 end
 
 T["panel.utils()"]["panel_uri_to_doc_uri"] = function()
-  local doc_uri = ""
+  local doc_uri
 
   if vim.fn.has("win32") > 0 then
     doc_uri = "file:///C:/Users/antoi/AppData/Local/nvim-data/lazy/copilot.lua/lua/copilot/suggestion/init.lua"