diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd03067..814388f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,55 @@ Based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ---
 
+## [2.5.2] — 2026-06-07
+
+### Fixed
+
+- **Admin console — space creation no longer fails with "Empty response".**
+  - **Root cause (infrastructure, not application code).** The admin console
+    proxies every tool call through `POST /api/tool`, which is routed
+    **through** the Coraza WAF (OWASP CRS). When creating a space with
+    Markdown rules, that content travels in the request body and trips CRS
+    XSS/SQLi heuristics — notably the `<` characters in the default rules
+    (`activeContext.md < 8 KB`, `< 15 KB`) and the word `delete`
+    (`delete sections superseded…`). The cumulative anomaly score crossed
+    the threshold (5), Coraza returned a **403 with an empty body**, and the
+    web UI surfaced it as `space_create` failing with *"Empty response"*.
+    This is why `space_list` worked but `space_create` (with rules) did not.
+  - **Fix.** `waf/Caddyfile` now excludes the **request body** of
+    `/api/tool` from CRS inspection
+    (`ctl:requestBodyAccess=Off` scoped to `REQUEST_URI @beginsWith
+    /api/tool`). The endpoint is already gated by an HttpOnly cookie **and**
+    the `write` permission and only proxies structured `{tool, arguments}`
+    calls, so this mirrors the trust rationale already applied to `/mcp*`.
+    Rate-limiting, body-size limits, and URI/header inspection (path
+    traversal, scanners) remain active.
+  - ⚠️ **Requires restarting/recreating the WAF container** for the change
+    to take effect (`docker compose restart waf`). The Caddyfile is
+    bind-mounted (`./waf/Caddyfile:/etc/caddy/Caddyfile:ro`), so **no image
+    rebuild is needed** — Caddy re-reads it on restart.
+
+### Added
+
+- **Admin console — Owner field on "Create Space" is now a suggestion list.**
+  - The free-text `Owner` input is paired with a `<datalist>` populated from
+    **active token holders** (names deduplicated and sorted). Free-text entry
+    is still allowed for owners that have no token.
+  - Stored value is the **token name** (consistent with the Owner column
+    rendering). `owner` remains optional and purely informational
+    server-side — it has never been able to cause a creation failure.
+
+### Changed
+
+- `waf/Caddyfile` — new Coraza rule `id:900500` scoping
+  `requestBodyAccess=Off` to `/api/tool`.
+- `src/live_mem/static/js/admin-app.js` — new `ownerOptionsHtml()` helper;
+  `showCreateSpace()` renders the Owner `<datalist>`.
+- `DESIGN/live-mem/DEPLOIEMENT_PRODUCTION.md` — §5 "WAF Routes" documents the
+  `/api/tool` body-inspection exception.
+
+---
+
 ## [2.5.1] — 2026-06-05
 
 ### Added
diff --git a/DESIGN/live-mem/DEPLOIEMENT_PRODUCTION.md b/DESIGN/live-mem/DEPLOIEMENT_PRODUCTION.md
index f90f852..5e359a7 100644
--- a/DESIGN/live-mem/DEPLOIEMENT_PRODUCTION.md
+++ b/DESIGN/live-mem/DEPLOIEMENT_PRODUCTION.md
@@ -128,12 +128,27 @@ networks:
 | Route | WAF Coraza | Timeout | Usage |
 |---|---|---|---|
 | `/mcp*` | ❌ (bypass) | Unlimited | Single MCP Streamable HTTP endpoint (POST/GET/DELETE) |
-| `/api/*` | ✅ | 5min | REST API (web interface) |
+| `/api/tool` | ⚠️ (headers/URI only, body not inspected) | 5min | Admin console tool proxy |
+| `/api/*` (other) | ✅ | 5min | REST API (web interface) |
 | `/live`, `/static/*` | ✅ | Standard | Web interface |
 | Everything else | ✅ | Standard | Health (`/health`), etc. |
 
 > **Note v0.5.0**: The former `/sse*` and `/messages/*` routes (SSE transport) have been removed and unified into `/mcp*` (Streamable HTTP).
 
+> **Note v2.5.2 — `/api/tool` request body excluded from CRS inspection.**
+> The admin console proxies tool calls through `POST /api/tool`, whose body
+> carries free-form Markdown (e.g. Memory Bank rules: `<` comparisons,
+> the word `delete`, `**`, backticks). The OWASP CRS flagged these as
+> XSS/SQLi, pushed the anomaly score past the threshold, and Coraza
+> returned an empty-body 403 — surfacing in the UI as `space_create`
+> failing with *"Empty response"*. The endpoint is already gated by an
+> HttpOnly cookie **and** the `write` permission, and only proxies
+> structured `{tool, arguments}` calls, so its **request body** is
+> excluded from CRS inspection (`ctl:requestBodyAccess=Off` scoped to
+> `REQUEST_URI @beginsWith /api/tool`). Rate-limiting, body-size limits,
+> and URI/header inspection (path traversal, scanners) stay active — same
+> trust rationale already applied to `/mcp*`.
+
 ---
 
 ## 6. Backup & Restore
diff --git a/VERSION b/VERSION
index 73462a5..f225a78 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.5.1
+2.5.2
diff --git a/src/live_mem/__init__.py b/src/live_mem/__init__.py
index f77ad7b..cf37e37 100644
--- a/src/live_mem/__init__.py
+++ b/src/live_mem/__init__.py
@@ -1,4 +1,4 @@
 # -*- coding: utf-8 -*-
 """Live Memory — Memory Bank as a Service pour agents IA collaboratifs."""
 
-__version__ = "2.5.1"
+__version__ = "2.5.2"
diff --git a/src/live_mem/static/js/admin-app.js b/src/live_mem/static/js/admin-app.js
index 4a5f1a7..31cfbfc 100644
--- a/src/live_mem/static/js/admin-app.js
+++ b/src/live_mem/static/js/admin-app.js
@@ -287,11 +287,19 @@ async function renderSpaces(){
     }</tbody></table>`;
 }
 
+function ownerOptionsHtml(){
+    // Suggestions = détenteurs de tokens actifs, noms dédupliqués et triés.
+    const names=[...new Set((cache.tokens||[])
+        .filter(t=>!t.revoked && t.name)
+        .map(t=>t.name))].sort((a,b)=>a.localeCompare(b));
+    return names.map(n=>`<option value="${esc(n)}">`).join('');
+}
+
 function showCreateSpace(){
     showModal('➕ Create Space',`
         <div class="form-group"><label class="form-label">Space ID <span class="req">*</span></label><input class="form-input" data-1p-ignore id="m_space_id" placeholder="my-project"></div>
         <div class="form-group"><label class="form-label">Description <span class="req">*</span></label><input class="form-input" data-1p-ignore id="m_desc"></div>
-        <div class="form-group"><label class="form-label">Owner</label><input class="form-input" data-1p-ignore id="m_owner"></div>
+        <div class="form-group"><label class="form-label">Owner</label><input class="form-input" data-1p-ignore id="m_owner" list="m_owner_list" placeholder="Choisir un détenteur de token ou saisir un nom"><datalist id="m_owner_list">${ownerOptionsHtml()}</datalist></div>
         <div class="form-group"><label class="form-label">Rules (Markdown)</label><textarea class="form-input" id="m_rules" rows="6" placeholder="Leave empty for default rules"></textarea></div>
     `,'Create Space',async()=>{
         const sid=gv('m_space_id'),desc=gv('m_desc');if(!sid||!desc)return false;
diff --git a/tests/test_security_hardening_v2.py b/tests/test_security_hardening_v2.py
index 189597a..84612b5 100644
--- a/tests/test_security_hardening_v2.py
+++ b/tests/test_security_hardening_v2.py
@@ -1621,5 +1621,5 @@ def test_sanity_imports_dont_break_existing_code():
     from live_mem.tools import bank, admin, system, graph, backup as tb
     from live_mem.auth import context, middleware
 
-    # Version bumpée à 2.5.0
-    assert live_mem.__version__ == "2.5.0"
+    # Version bumpée à 2.5.2
+    assert live_mem.__version__ == "2.5.2"
diff --git a/waf/Caddyfile b/waf/Caddyfile
index c07bd10..c67023d 100644
--- a/waf/Caddyfile
+++ b/waf/Caddyfile
@@ -163,6 +163,24 @@
 
 				SecAction "id:900220,phase:1,pass,nolog,\
 					setvar:'tx.allowed_request_content_type=|application/json|text/plain|multipart/form-data|application/x-www-form-urlencoded|application/octet-stream|'"
+
+				# ---------------------------------------------------------
+				# Exclusion ciblée : console admin authentifiée (/api/tool)
+				# ---------------------------------------------------------
+				# Le corps de POST /api/tool transporte du markdown légitime
+				# (rules de Memory Bank : caractères '<', mot 'delete', '**',
+				# backticks…) que l'OWASP CRS prend pour des attaques XSS/SQLi.
+				# Le score d'anomalie dépasse le seuil → 403 à corps vide, que
+				# l'UI affiche comme "Empty response" (échec de space_create).
+				#
+				# Cet endpoint est déjà protégé : cookie HttpOnly + permission
+				# write obligatoire, et il ne proxifie que des appels d'outils
+				# structurés {tool, arguments}. On désactive donc l'inspection
+				# du CORPS pour ce seul chemin (même logique assumée que /mcp*).
+				# Restent actifs : rate-limiting, limites de taille, inspection
+				# de l'URI et des headers (path traversal, scanners, etc.).
+				SecRule REQUEST_URI "@beginsWith /api/tool" \
+					"id:900500,phase:1,pass,nolog,ctl:requestBodyAccess=Off"
 			`
 		}