diff --git a/AGENTS.md b/AGENTS.md
index 4650641..423c97e 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -27,6 +27,7 @@ This repository publishes the open-source server, console, integration catalog,
 - Write Grok Build integrations to a native user hook file under non-empty `GROK_HOME` or `~/.grok`; keep Claude Code and Cursor compatibility sources read-only.
 - Write Auggie hooks only to `~/.augment/settings.json`; keep system and workspace settings read-only. Generate `.cmd` wrappers on Windows and `.sh` wrappers on Unix because Auggie dispatches supported script paths, and express hook timeouts in milliseconds.
 - Validate Auggie matcher syntax during installation with Node.js `new RegExp`; keep status and uninstall independent from the JavaScript validator so recovery remains available offline.
+- Write Cline file hooks to `$CLINE_DIR/hooks` with `~/.cline/hooks` as the default; keep Documents and workspace hook roots read-only. Use supported event filenames and return JSON stdout with `cancel: true` for blocking. Treat hook errors, timeouts, and invalid control JSON as fail-open.
 
 ## Mirror Workflow
 
diff --git a/integrations/catalog.json b/integrations/catalog.json
index 9f17b82..0727b04 100644
--- a/integrations/catalog.json
+++ b/integrations/catalog.json
@@ -64,20 +64,30 @@
       "name": "Cline",
       "vendor": "Cline",
       "surface": "cli_and_ide",
-      "integration_mode": "plugin_api",
-      "config_format": "plugin",
-      "config_paths": [],
+      "integration_mode": "command_hooks",
+      "config_format": "script",
+      "config_paths": [
+        "~/Documents/Cline/Hooks/",
+        "$CLINE_DIR/hooks/",
+        ".clinerules/hooks/",
+        ".cline/hooks/"
+      ],
       "events": {
-        "before_tool": "beforeTool",
-        "after_tool": "afterTool"
+        "before_tool": "PreToolUse",
+        "after_tool": "PostToolUse"
+      },
+      "event_fields": {
+        "name": "tool_call.name/tool_result.name",
+        "input": "tool_call.input/tool_result.input",
+        "session": "taskId"
       },
       "blocking": {
-        "mechanism": "hook_policy",
-        "failure_mode": "configurable"
+        "mechanism": "json_stdout_cancel",
+        "failure_mode": "fail_open"
       },
       "adapters": { "node": false, "python": false, "go": false },
       "delivery_state": "planned",
-      "source_url": "https://docs.cline.bot/sdk/plugins"
+      "source_url": "https://github.com/cline/cline/blob/main/sdk/examples/hooks/README.md"
     },
     {
       "id": "codex",
diff --git a/integrations/catalog.schema.json b/integrations/catalog.schema.json
index 6b71a7c..0f83a15 100644
--- a/integrations/catalog.schema.json
+++ b/integrations/catalog.schema.json
@@ -71,7 +71,8 @@
             "enum": [
               "json",
               "toml",
-              "plugin"
+              "plugin",
+              "script"
             ]
           },
           "config_paths": {
@@ -136,7 +137,8 @@
                   "any_nonzero_exit",
                   "exception",
                   "exit_code_2",
-                  "hook_policy"
+                  "hook_policy",
+                  "json_stdout_cancel"
                 ]
               },
               "failure_mode": {
@@ -252,7 +254,8 @@
           "enum": [
             "json",
             "toml",
-            "plugin"
+            "plugin",
+            "script"
           ]
         },
         "config_paths": {
@@ -318,7 +321,8 @@
                 "any_nonzero_exit",
                 "exception",
                 "exit_code_2",
-                "hook_policy"
+                "hook_policy",
+                "json_stdout_cancel"
               ]
             },
             "failure_mode": {
diff --git a/test/integration-catalog.test.mjs b/test/integration-catalog.test.mjs
index 1385e8a..cc9095e 100644
--- a/test/integration-catalog.test.mjs
+++ b/test/integration-catalog.test.mjs
@@ -93,7 +93,7 @@ test('every provider exposes a complete, machine-readable hook contract', async
     assert.equal(typeof provider.vendor, 'string');
     assert.ok(['cli', 'ide', 'cli_and_ide'].includes(provider.surface));
     assert.ok(['command_hooks', 'plugin_api'].includes(provider.integration_mode));
-    assert.ok(['json', 'toml', 'plugin'].includes(provider.config_format));
+    assert.ok(['json', 'toml', 'plugin', 'script'].includes(provider.config_format));
     assert.ok(Array.isArray(provider.config_paths));
     assert.equal(typeof provider.events.before_tool, 'string');
     assert.equal(typeof provider.events.after_tool, 'string');
@@ -102,6 +102,7 @@ test('every provider exposes a complete, machine-readable hook contract', async
       'exception',
       'exit_code_2',
       'hook_policy',
+      'json_stdout_cancel',
     ].includes(provider.blocking.mechanism));
     assert.ok([
       'adapter_controlled',
@@ -128,7 +129,7 @@ test('every provider exposes a complete, machine-readable hook contract', async
       assert.match(variant.id, /^[a-z][a-z0-9]*$/);
       assert.ok(['stable', 'early_access', 'legacy'].includes(variant.release_channel));
       assert.equal(typeof variant.activation, 'string');
-      assert.ok(['json', 'toml', 'plugin'].includes(variant.config_format));
+      assert.ok(['json', 'toml', 'plugin', 'script'].includes(variant.config_format));
       assert.ok(Array.isArray(variant.config_paths) && variant.config_paths.length > 0);
       assert.equal(typeof variant.events.before_tool, 'string');
       assert.equal(typeof variant.events.after_tool, 'string');
@@ -148,6 +149,17 @@ test('schema freezes the provider contract and supported enums', async () => {
   assert.deepEqual([...providerSchema.required].sort(), [...requiredProviderFields].sort());
   assert.deepEqual(providerSchema.properties.surface.enum, ['cli', 'ide', 'cli_and_ide']);
   assert.deepEqual(providerSchema.properties.integration_mode.enum, ['command_hooks', 'plugin_api']);
+  assert.deepEqual(providerSchema.properties.config_format.enum, [
+    'json',
+    'toml',
+    'plugin',
+    'script',
+  ]);
+  assert.ok(
+    providerSchema.properties.blocking.properties.mechanism.enum.includes(
+      'json_stdout_cancel',
+    ),
+  );
   assert.deepEqual(providerSchema.properties.delivery_state.enum, ['available', 'partial', 'planned']);
   assert.equal(providerSchema.properties.contract_variants.items.$ref, '#/$defs/contractVariant');
   assert.deepEqual(schema.$defs.contractVariant.properties.release_channel.enum, [
@@ -202,6 +214,27 @@ test('high-drift providers retain their verified hook contracts', async () => {
     '~/.codex/hooks.json',
     '.codex/hooks.json',
   ]);
+  assert.equal(providers.get('cline').integration_mode, 'command_hooks');
+  assert.equal(providers.get('cline').config_format, 'script');
+  assert.deepEqual(providers.get('cline').config_paths, [
+    '~/Documents/Cline/Hooks/',
+    '$CLINE_DIR/hooks/',
+    '.clinerules/hooks/',
+    '.cline/hooks/',
+  ]);
+  assert.deepEqual(providers.get('cline').events, {
+    before_tool: 'PreToolUse',
+    after_tool: 'PostToolUse',
+  });
+  assert.deepEqual(providers.get('cline').event_fields, {
+    name: 'tool_call.name/tool_result.name',
+    input: 'tool_call.input/tool_result.input',
+    session: 'taskId',
+  });
+  assert.deepEqual(providers.get('cline').blocking, {
+    mechanism: 'json_stdout_cancel',
+    failure_mode: 'fail_open',
+  });
   assert.deepEqual(providers.get('kimi').events, {
     before_tool: 'PreToolUse',
     after_tool: 'PostToolUse',