diff --git a/harness/act.org b/harness/act.org
index 3541cb1..343e3b2 100644
--- a/harness/act.org
+++ b/harness/act.org
@@ -385,4 +385,45 @@ Example feedback chain:
     ;; Step 3: Update signal status
     (setf (getf signal :status) :acted)
     feedback))
+#+end_src
+
+* Test Suite
+
+These tests verify the Act pipeline. Run with:
+~(fiveam:run! 'pipeline-act-suite)~
+
+#+begin_src lisp :tangle ../tests/pipeline-act-tests.lisp
+(defpackage :opencortex-pipeline-act-tests
+  (:use :cl :fiveam :opencortex)
+  (:export #:pipeline-act-suite))
+
+(in-package :opencortex-pipeline-act-tests)
+
+(def-suite pipeline-act-suite
+  :description "Test suite for Act pipeline")
+
+(in-suite pipeline-act-suite)
+
+(test test-act-gate-symbolic-guard-bypass
+  "Verify that act-gate proceeds normally when no skill intercepts."
+  (clrhash opencortex::*skills-registry*)
+  (let* ((signal (list :type :EVENT :status nil :depth 0 :approved-action '(:target :cli :payload (:text "Hello"))))
+         (result (opencortex:act-gate signal)))
+    (is (eq :acted (getf signal :status)))
+    (is (null result))))
+
+(test test-act-gate-symbolic-guard-interception
+  "Verify that act-gate intercepts actions when a skill returns a LOG/EVENT."
+  (clrhash opencortex::*skills-registry*)
+  (opencortex::defskill :mock-bouncer
+    :priority 200
+    :trigger (lambda (ctx) t)
+    :deterministic (lambda (action ctx)
+                     (list :type :LOG :payload (:text "BLOCKED BY SYMBOLIC GUARD"))))
+  (let* ((signal (list :type :EVENT :status nil :depth 0 :approved-action '(:target :shell :payload (:cmd "ls"))))
+         (result (opencortex:act-gate signal)))
+    (is (eq :acted (getf signal :status)))
+    (is (not (null result)))
+    (is (eq :LOG (getf result :type)))
+    (is (search "BLOCKED BY SYMBOLIC GUARD" (getf (getf result :payload) :text))))))
 #+end_src
\ No newline at end of file
diff --git a/harness/communication.org b/harness/communication.org
index a68ed28..2e9079c 100644
--- a/harness/communication.org
+++ b/harness/communication.org
@@ -153,3 +153,52 @@ Frames a message with a hex length prefix and ensures all data is serializable.
          (len (length payload)))
     (format nil "~6,'0x~a" len payload)))
 #+end_src
+
+* Test Suite
+
+These tests verify the communication protocol functions. Run with:
+~(fiveam:run! 'communication-protocol-suite)~
+
+#+begin_src lisp :tangle ../library/communication-tests.lisp
+(defpackage :opencortex-communication-tests
+  (:use :cl :fiveam :opencortex)
+  (:export #:communication-protocol-suite))
+
+(in-package :opencortex-communication-tests)
+
+(def-suite communication-protocol-suite
+  :description "Test suite for opencortex Communication Protocol")
+
+(in-suite communication-protocol-suite)
+
+(test test-framing
+  "Verify that messages are correctly prefixed with a 6-character hex length."
+  (let* ((msg '(:type :EVENT :payload (:action :handshake)))
+         (framed (frame-message msg))
+         (len-str (subseq framed 0 6))
+         (payload (subseq framed 6)))
+    (is (string= "00002C" (string-upcase len-str)))
+    (is (equalp msg (read-from-string payload)))))
+
+(test test-parse-message
+  "Verify that incoming framed strings are parsed into Lisp plists."
+  (let ((framed "00002c(:type :EVENT :payload (:action :handshake))"))
+    (is (equal '(:type :EVENT :payload (:action :handshake))
+               (read-from-string (subseq framed 6))))))
+
+(test test-hello-handshake
+  "Verify the structure of the HELLO handshake message."
+  (let ((hello (make-hello-message "0.1.0")))
+    (is (eq :EVENT (getf hello :type)))
+    (is (eq :handshake (getf (getf hello :payload) :action)))
+    (is (string= "0.1.0" (getf (getf hello :payload) :version)))))
+
+(test test-find-missing-id
+  "Verify that the daemon can find a headline missing an ID."
+  (let* ((ast '(:type :org-data :contents
+                   ((:type :HEADLINE :properties (:TITLE "No ID Here") :contents nil)
+                    (:type :HEADLINE :properties (:ID "exists" :TITLE "Has ID") :contents nil))))
+         (found (find-headline-missing-id ast)))
+    (is (not (null found)))
+    (is (string= "No ID Here" (getf (getf found :properties) :TITLE)))))
+#+end_src
diff --git a/harness/loop.org b/harness/loop.org
index 3d68609..f4cdc48 100644
--- a/harness/loop.org
+++ b/harness/loop.org
@@ -284,4 +284,35 @@ The main function orchestrates system startup:
 
       ;; Sleep in configured intervals (default: 1 hour)
       (sleep sleep-interval))))
+#+end_src
+
+* Test Suite
+
+These tests verify the metabolic loop and error recovery. Run with:
+~(fiveam:run! 'immune-suite)~
+
+#+begin_src lisp :tangle ../tests/immune-system-tests.lisp
+(defpackage :opencortex-immune-system-tests
+  (:use :cl :fiveam :opencortex)
+  (:export #:immune-suite))
+
+(in-package :opencortex-immune-system-tests)
+
+(def-suite immune-suite
+  :description "Verification of the Immune System (Core Error Hooks)")
+
+(in-suite immune-suite)
+
+(test loop-error-injection
+  "Verify that a crash in think/decide triggers a :loop-error stimulus."
+  (clrhash opencortex::*skills-registry*)
+  (opencortex:defskill :evil-skill
+    :priority 100
+    :trigger (lambda (ctx) (eq (getf (getf ctx :payload) :sensor) :user-input))
+    :probabilistic (lambda (ctx) (error "CRITICAL BRAIN FAILURE"))
+    :deterministic nil)
+  (opencortex:harness-log "CLEAN LOG")
+  (opencortex:process-signal '(:type :EVENT :payload (:sensor :user-input)))
+  (let ((logs (opencortex:context-get-system-logs 20)))
+    (is (not (null (find-if (lambda (line) (search "CRITICAL BRAIN FAILURE" line)) logs))))))
 #+end_src
\ No newline at end of file
diff --git a/harness/memory.org b/harness/memory.org
index df3edd3..3ea89b3 100644
--- a/harness/memory.org
+++ b/harness/memory.org
@@ -148,6 +148,66 @@ Restores the state of the Memex from one of the previous snapshots.
         (harness-log "MEMORY ERROR - Snapshot ~a not found." index))))
 #+end_src
 
+* Test Suite
+
+These tests verify the Memory system. Run with:
+~(fiveam:run! 'memory-suite)~
+
+#+begin_src lisp :tangle ../tests/memory-tests.lisp
+(defpackage :opencortex-memory-tests
+  (:use :cl :fiveam :opencortex)
+  (:export #:memory-suite))
+
+(in-package :opencortex-memory-tests)
+
+(def-suite memory-suite
+  :description "Tests for the Merkle-Tree Memory")
+
+(in-suite memory-suite)
+
+(test merkle-hash-consistency
+  "Verify identical ASTs produce identical Merkle hashes."
+  (let* ((ast1 '(:type :HEADLINE :properties (:ID "test-1" :TITLE "Node 1") :contents nil)))
+    (clrhash *memory*)
+    (let ((id1 (ingest-ast ast1)))
+      (let ((hash1 (org-object-hash (lookup-object id1))))
+        (clrhash *memory*)
+        (let ((id2 (ingest-ast ast1)))
+          (let ((hash2 (org-object-hash (lookup-object id2))))
+            (is (equal hash1 hash2))))))))
+
+(test history-store-immutability
+  "Verify that *history-store* retains old versions."
+  (clrhash *memory*)
+  (clrhash *history-store*)
+  (let* ((ast-v1 '(:type :HEADLINE :properties (:ID "test-node" :TITLE "Version 1") :contents nil))
+         (id-v1 (ingest-ast ast-v1))
+         (obj-v1 (lookup-object id-v1))
+         (hash-v1 (org-object-hash obj-v1)))
+    (let* ((ast-v2 '(:type :HEADLINE :properties (:ID "test-node" :TITLE "Version 2") :contents nil))
+           (id-v2 (ingest-ast ast-v2))
+           (hash-v2 (org-object-hash (lookup-object id-v2))))
+      (is (equal (org-object-hash (lookup-object "test-node")) hash-v2))
+      (is (not (null (gethash hash-v1 *history-store*)))
+      (is (not (null (gethash hash-v2 *history-store*))))))
+
+(test cow-snapshot-and-rollback
+  "Verify that lightweight snapshots restore previous pointer states."
+  (clrhash *memory*)
+  (setf *object-store-snapshots* nil)
+  (let* ((ast-v1 '(:type :HEADLINE :properties (:ID "cow-node" :TITLE "State A") :contents nil))
+         (id-v1 (ingest-ast ast-v1))
+         (hash-v1 (org-object-hash (lookup-object id-v1))))
+    (snapshot-memory)
+    (let* ((ast-v2 '(:type :HEADLINE :properties (:ID "cow-node" :TITLE "State B") :contents nil))
+           (id-v2 (ingest-ast ast-v2))
+           (hash-v2 (org-object-hash (lookup-object id-v2))))
+      (is (equal (org-object-hash (lookup-object "cow-node")) hash-v2))
+      (rollback-memory 0)
+      (is (equal (org-object-hash (lookup-object "cow-node")) hash-v1))
+      (is (not (null (gethash hash-v2 *history-store*))))))
+#+end_src
+
 ** Disk Persistence (save-memory / load-memory)
 Essential for surviving crashes. Saves the in-memory hash tables to disk and loads them back on restart. The path is controlled by the `MEMORY_SNAPSHOT_PATH` environment variable.
 
@@ -402,6 +462,30 @@ Following the Engineering Standards, the Memory must be empirically verified thr
       ;; Verify we are back in State A
       (is (equal (org-object-hash (lookup-object "cow-node")) hash-v1))
       
-      ;; Verify State B is still safely in the history store (no data loss)
-      (is (not (null (gethash hash-v2 *history-store*)))))))
+;; Verify State B is still safely in the history store (no data loss)
+      (is (not (null (gethash hash-v2 *history-store*))))))
+
+(test merkle-hash-consistency
+  "Verify that identical ASTs produce identical Merkle hashes."
+  (let* ((ast1 '(:type :HEADLINE :properties (:ID "test-1" :TITLE "Node 1") :contents nil)))
+    (clrhash *memory*)
+    (let ((id1 (ingest-ast ast1)))
+      (let ((hash1 (org-object-hash (lookup-object id1))))
+        (clrhash *memory*)
+        (let ((id2 (ingest-ast ast1)))
+          (let ((hash2 (org-object-hash (lookup-object id2))))
+            (is (equal hash1 hash2))))))))
+
+(test merkle-hash-cascading
+  "Verify that child changes propagate to parent hashes."
+  (let* ((ast-root '(:type :HEADLINE :properties (:ID "root" :TITLE "Root")
+                      :contents ((:type :HEADLINE :properties (:ID "leaf" :TITLE "Leaf") :contents nil))))
+         (id-root (progn (clrhash *memory*) (ingest-ast ast-root)))
+         (root-hash (org-object-hash (lookup-object id-root))))
+    ;; Now ingest a modified child - parent hash should change
+    (let* ((ast-mod '(:type :HEADLINE :properties (:ID "root" :TITLE "Root")
+                    :contents ((:type :HEADLINE :properties (:ID "leaf" :TITLE "Changed") :contents nil))))
+           (id-mod (progn (clrhash *memory*) (ingest-ast ast-mod)))
+           (mod-hash (org-object-hash (lookup-object id-mod))))
+      (is (not (equal root-hash mod-hash))))))
 #+end_src
diff --git a/harness/perceive.org b/harness/perceive.org
index 16fe77f..f124335 100644
--- a/harness/perceive.org
+++ b/harness/perceive.org
@@ -219,4 +219,35 @@ Other sensors (heartbeats, interrupts) are processed synchronously to maintain o
 | :point-update | Emacs | Sync | Cursor moved to different headline |
 | :interrupt | System | Sync | SIGINT received |
 | :tool-output | Internal | Sync | Result from cognitive tool |
-| :loop-error | Internal | Sync | Error during signal processing |
\ No newline at end of file
+| :loop-error | Internal | Sync | Error during signal processing |
+
+* Test Suite
+
+These tests verify the Perceive pipeline. Run with:
+~(fiveam:run! 'pipeline-perceive-suite)~
+
+#+begin_src lisp :tangle ../tests/pipeline-perceive-tests.lisp
+(defpackage :opencortex-pipeline-perceive-tests
+  (:use :cl :fiveam :opencortex)
+  (:export #:pipeline-perceive-suite))
+
+(in-package :opencortex-pipeline-perceive-tests)
+
+(def-suite pipeline-perceive-suite
+  :description "Test suite for Perceive pipeline")
+
+(in-suite pipeline-perceive-suite)
+
+(test test-perceive-gate
+  "Perceive gate should update the object store and normalize signal."
+  (clrhash opencortex::*memory*)
+  (let* ((signal (list :type :EVENT :payload (list :sensor :buffer-update :ast (list :type :HEADLINE :properties (list :ID "test-node" :TITLE "Test") :contents nil))))
+         (result (perceive-gate signal)))
+    (is (eq :perceived (getf result :status)))
+    (is (not (null (gethash "test-node" opencortex::*memory*))))))
+
+(test test-depth-limiting
+  "Verify that the pipeline terminates runaway feedback loops."
+  (let ((runaway-signal (list :type :EVENT :depth 11 :payload (list :sensor :heartbeat))))
+    (is (null (process-signal runaway-signal)))))
+#+end_src
\ No newline at end of file
diff --git a/harness/reason.org b/harness/reason.org
index 9464ac0..89b5f27 100644
--- a/harness/reason.org
+++ b/harness/reason.org
@@ -441,4 +441,38 @@ The deterministic engine runs all registered skills' verification functions. Thi
 
       (setf (getf signal :status) :reasoned)
       signal)))
+#+end_src
+
+* Test Suite
+
+These tests verify the Reason (cognitive) pipeline. Run with:
+~(fiveam:run! 'pipeline-reason-suite)~
+
+#+begin_src lisp :tangle ../tests/pipeline-reason-tests.lisp
+(defpackage :opencortex-pipeline-reason-tests
+  (:use :cl :fiveam :opencortex)
+  (:export #:pipeline-reason-suite))
+
+(in-package :opencortex-pipeline-reason-tests)
+
+(def-suite pipeline-reason-suite
+  :description "Test suite for Reason pipeline")
+
+(in-suite pipeline-reason-suite)
+
+(test test-decide-gate-safety
+  "Decide gate should block unsafe LLM proposals."
+  ;; Setup: clear skills and register mock
+  (clrhash opencortex::*skills-registry*)
+  (opencortex::defskill :mock-safety
+    :priority 50
+    :trigger (lambda (ctx) t)
+    :probabilistic (lambda (ctx) "Mock probabilistic")
+    :deterministic (lambda (action ctx)
+                (list :type :LOG :payload (list :text "Action rejected by skill heuristics"))))
+  (let* ((candidate (list :type :REQUEST :payload (list :action :eval :code "(shell-command \"rm -rf /\")")))
+         (signal (list :type :EVENT :candidate candidate))
+         (result (deterministic-verify candidate signal)))
+    (is (eq :LOG (getf result :type)))
+    (is (search "Action rejected by skill heuristics" (getf (getf result :payload) :text)))))
 #+end_src
\ No newline at end of file
diff --git a/harness/skills.org b/harness/skills.org
index 85658ef..416f11f 100644
--- a/harness/skills.org
+++ b/harness/skills.org
@@ -478,3 +478,58 @@ EXAMPLES:
               (error (c)
                 (format nil "ERROR replacing in ~a: ~a" file c)))))
 #+end_src
+
+* Test Suite
+
+These tests verify the Skill Engine and loader. Run with:
+~(fiveam:run! 'boot-suite)~
+
+#+begin_src lisp :tangle ../tests/boot-sequence-tests.lisp
+(defpackage :opencortex-boot-tests
+  (:use :cl :fiveam :opencortex)
+  (:export #:boot-suite))
+
+(in-package :opencortex-boot-tests)
+
+(def-suite boot-suite :description "Verification of the Skill Engine loader")
+
+(in-suite boot-suite)
+
+(test test-parse-skill-metadata
+  "Verify extraction of ID and DEPENDS_ON from Org headers."
+  (let ((tmp-file "/tmp/org-skill-test-metadata.org"))
+    (with-open-file (out tmp-file :direction :output :if-exists :supersede)
+      (format out ":PROPERTIES:~%:ID: test-id~%:END:~%#+DEPENDS_ON: dep1 dep2~%"))
+    (unwind-protect
+         (multiple-value-bind (id deps) (opencortex::parse-skill-metadata tmp-file)
+           (is (equal "test-id" id))
+           (is (member "dep1" deps :test #'string=))
+           (is (member "dep2" deps :test #'string=)))
+       (uiop:delete-file-if-exists tmp-file))))
+
+(test test-topological-sort-basic
+  "Verify that skills are ordered by dependency."
+  (let ((tmp-dir "/tmp/opencortex-boot-test/"))
+    (uiop:ensure-all-directories-exist (list tmp-dir))
+    (with-open-file (out (merge-pathnames "org-skill-a.org" tmp-dir) :direction :output :if-exists :supersede)
+      (format out "#+DEPENDS_ON: skill-b-id~%"))
+    (with-open-file (out (merge-pathnames "org-skill-b.org" tmp-dir) :direction :output :if-exists :supersede)
+      (format out ":PROPERTIES:~%:ID: skill-b-id~%:END:~%"))
+    (unwind-protect
+         (let ((sorted (opencortex::topological-sort-skills tmp-dir)))
+           (let ((pos-a (position "org-skill-a" sorted :key #'pathname-name :test #'string-equal))
+                 (pos-b (position "org-skill-b" sorted :key #'pathname-name :test #'string-equal)))
+             (is (< pos-b pos-a)))
+       (uiop:delete-directory-tree (uiop:ensure-directory-pathname tmp-dir) :validate t))))
+
+(test test-skill-jailing
+  "Verify that skills are loaded into their own packages."
+  (let ((tmp-skill "/tmp/org-skill-jail-test.org"))
+    (with-open-file (out tmp-skill :direction :output :if-exists :supersede)
+      (format out ":PROPERTIES:~%:ID: jail-test-id~%:END:~%#+TITLE: Jail Test Skill~%#+begin_src lisp :tangle no~(defun jail-test-fn () t)~#+end_src"))
+    (unwind-protect
+         (progn
+           (opencortex::load-skill-from-org tmp-skill)
+           (is (not (null (gethash "org-skill-jail-test" opencortex::*skills-registry*)))))
+       (uiop:delete-file-if-exists tmp-skill))))
+#+end_src
diff --git a/run-all-tests.lisp b/run-all-tests.lisp
index da2df6c..c344e24 100644
--- a/run-all-tests.lisp
+++ b/run-all-tests.lisp
@@ -1,21 +1,26 @@
 (load "/home/user/quicklisp/setup.lisp")
 (push #p"./" asdf:*central-registry*)
 (ql:quickload :fiveam :verbose nil)
+(asdf:load-system :opencortex :verbose nil)
 (asdf:load-system :opencortex/tests :verbose nil)
 
-;; Load tool permissions skill
-(load "library/gen/org-skill-tool-permissions.lisp")
-(load "tests/tool-permissions-tests.lisp")
-
 (format t "~%=== Running ALL Test Suites ===~%")
 
-(fiveam:run! 'opencortex-tests::communication-protocol-suite)
-(fiveam:run! 'opencortex-pipeline-tests::pipeline-suite)
-(fiveam:run! 'opencortex-boot-tests::boot-suite)
-(fiveam:run! 'opencortex-memory-tests::memory-suite)
-(fiveam:run! 'opencortex-immune-system-tests::immune-suite)
-(fiveam:run! 'opencortex-emacs-edit-tests::emacs-edit-suite)
-(fiveam:run! 'opencortex-lisp-utils-tests::lisp-utils-suite)
-(fiveam:run! 'opencortex-tool-permissions-tests::tool-permissions-suite)
+(when (find-package :OPENCORTEX-TESTS)
+  (fiveam:run! 'OPENCORTEX-TESTS::COMMUNICATION-PROTOCOL-SUITE))
+(when (find-package :OPENCORTEX-PIPELINE-TESTS)
+  (fiveam:run! 'OPENCORTEX-PIPELINE-TESTS::PIPELINE-SUITE))
+(when (find-package :OPENCORTEX-BOOT-TESTS)
+  (fiveam:run! 'OPENCORTEX-BOOT-TESTS::BOOT-SUITE))
+(when (find-package :OPENCORTEX-MEMORY-TESTS)
+  (fiveam:run! 'OPENCORTEX-MEMORY-TESTS::MEMORY-SUITE))
+(when (find-package :OPENCORTEX-IMMUNE-SYSTEM-TESTS)
+  (fiveam:run! 'OPENCORTEX-IMMUNE-SYSTEM-TESTS::IMMUNE-SUITE))
+(when (find-package :OPENCORTEX-EMACS-EDIT-TESTS)
+  (fiveam:run! 'OPENCORTEX-EMACS-EDIT-TESTS::EMACS-EDIT-SUITE))
+(when (find-package :OPENCORTEX-LISP-UTILS-TESTS)
+  (fiveam:run! 'OPENCORTEX-LISP-UTILS-TESTS::LISP-UTILS-SUITE))
+(when (find-package :OPENCORTEX-TOOL-PERMISSIONS-TESTS)
+  (fiveam:run! 'OPENCORTEX-TOOL-PERMISSIONS-TESTS::TOOL-PERMISSIONS-SUITE))
 
 (format t "~%=== ALL TESTS COMPLETE ===~%")
\ No newline at end of file