diff --git a/projects/org-eval-tool/README.org b/projects/org-eval-tool/README.org
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+#+TITLE: org-eval
+
+Evaluate Lisp source blocks in an .org file via Emacs batch mode.
+
+== Usage
+
+#+begin_src shell
+  org-eval org/file.org          # evaluate all blocks
+  org-eval org/file.org 3        # evaluate block at index 3 (0-based)
+#+end_src
+
+Useful for quick REPL evaluation without starting the daemon — Emacs
+tangles and evaluates the block inline. Results are printed to stdout.
+
+== Dependencies
+
+Emacs with org-mode (org-babel).
diff --git a/projects/repl-tool/README.org b/projects/repl-tool/README.org
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+#+TITLE: repl
+
+Send a Lisp form to the running Passepartout daemon REPL (port 9105).
+Prints the response from the daemon.
+
+== Usage
+
+#+begin_src shell
+  repl "(+ 1 2)"
+  echo "(+ 1 2)" | repl
+#+end_src
+
+== Environment
+
+- ~PASSEPARTOUT_HOST~ — daemon host (default 127.0.0.1)
+- ~PASSEPARTOUT_PORT~ — daemon port (default 9105)
+- ~PASSEPARTOUT_REPL_TIMEOUT~ — timeout seconds (default 10)
+
+== Protocol
+
+Connects via framed TCP (6-byte hex length prefix). Sends a
+~:repl-eval~ sensor event and reads the response. Expects the
+daemon to be running (~passepartout daemon~).
+
+== Dependencies
+
+Perl (stdlib only).
diff --git a/projects/tangle-tool/README.org b/projects/tangle-tool/README.org
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+#+TITLE: tangle
+
+Generate .lisp files from .org sources via Emacs org-babel-tangle.
+
+== Usage
+
+#+begin_src shell
+  tangle org/file.org
+#+end_src
+
+Requires the org file to have ~#+PROPERTY: header-args:lisp :tangle target.lisp~
+or per-block ~:tangle~ headers. Files without a ~:tangle~ header are skipped.
+
+== Dependencies
+
+Emacs with org-mode (ob-tangle).
diff --git a/projects/verify-repl-tool/README.org b/projects/verify-repl-tool/README.org
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+#+TITLE: verify-repl
+
+Compliance checker for literate programming discipline. Scans .org files
+for violations of the REPL-first and one-per-block rules.
+
+== Usage
+
+#+begin_src shell
+  verify-repl org/
+  verify-repl projects/passepartout/org/
+#+end_src
+
+== Checks performed
+
+1. **REPL-first** — every ~(defun|defmacro|defvar|defstruct|defmethod|defclass)~
+   block must have ~;; REPL-VERIFIED: <timestamp>~ on the line above
+   ~#+begin_src lisp~. Any definition block without this comment is a violation.
+2. **One-per-block** — each ~#+begin_src lisp~ block must contain exactly one
+   top-level form. Multiple defuns in the same block are a violation.
+3. **Prose-before-code** — each code block must be preceded by an Org headline
+   (the prose explanation). Blocks without a preceding headline are a violation.
+
+== Exempt files
+
+Some core infrastructure files are blacklisted (package definitions, setup),
+defined in the script's ~BLACKLIST~ array. Extend as needed.
+
+== Dependencies
+
+Bash, grep.