diff --git a/tools.d/boltzmann.lua b/tools.d/boltzmann.lua
new file mode 100644
index 0000000..a742ada
--- /dev/null
+++ b/tools.d/boltzmann.lua
@@ -0,0 +1,30 @@
+-- boltzmann-tools plugin: `stash` — fleet persistent-memory CLI wrapper.
+-- Receives (server, run). Runs the stash CLI inside the memory Incus container's
+-- stash-stash-1 docker container (which has NO shell — /stash is invoked directly
+-- as argv; docker exec handles that, no `sh -c` inside the container).
+local server, run = ...
+
+server:tool("stash",
+    "Fleet persistent memory (stash knowledge graph on the memory container). "
+    .. "`command` = a stash subcommand + its args as ONE string. "
+    .. "Examples: command:=\"recall escher plug AIN\"  |  command:=\"facts\"  |  "
+    .. "command:=\"remember 'the NAS is at 192.168.88.10'\"  |  command:=\"namespace list\". "
+    .. "Wrap multi-word text in single quotes. Read subcommands: recall, facts, namespace list, "
+    .. "goal list, context show. Write: remember, forget, consolidate run.",
+    { type = "object", properties = {
+        command = { type = "string",
+            description = "stash subcommand + args, e.g. \"recall <query>\" or \"remember '<text>'\"" },
+    }, required = { "command" } },
+    function(a)
+        local c = tostring(a.command or ""):gsub("^%s+", ""):gsub("%s+$", "")
+        if c == "" then return "Error: command required (e.g. command:=\"recall <query>\")" end
+        return run("incus exec memory -- docker exec stash-stash-1 /stash " .. c, 60)
+    end,
+    { annotations = {
+        title           = "Stash fleet memory",
+        readOnlyHint    = false,
+        destructiveHint = false,
+        idempotentHint  = false,
+        openWorldHint   = true,
+    } }
+)