diff --git a/docs/plans/M5d2/03-loopd-heartbeat-config.md b/docs/plans/M5d2/03-loopd-heartbeat-config.md
index 9f00f0f..cef628a 100644
--- a/docs/plans/M5d2/03-loopd-heartbeat-config.md
+++ b/docs/plans/M5d2/03-loopd-heartbeat-config.md
@@ -22,6 +22,7 @@ The starter `config/heartbeat.md` is copied like `config/system.md`. Nothing tic
 |---|---|
 | `crates/loopd/src/config.rs` | `Heartbeat`; field; `load` joins the prompt; `heartbeat_prompt`; `check_summarise` |
 | `crates/loopd/src/main.rs` | after each `Config::load`, `check_summarise(&Registry::m5c())` |
+| `crates/loopd/tests/ask_memory_tool.rs` | `Registry::m5c()` count in `main.rs` is 3 (edit A1) |
 | `config/heartbeat.md` | new, given starter |
 | `crates/loopd/tests/config_heartbeat.rs` | new, given |
 | everything else | **no change** |
@@ -31,7 +32,7 @@ The starter `config/heartbeat.md` is copied like `config/system.md`. Nothing tic
 - Copy, from `docs/plans/M5d2/files/` (the same path under it): the new test
   `crates/loopd/tests/config_heartbeat.rs` and the starter `config/heartbeat.md`.
 - Modify: `crates/loopd/src/config.rs`, `crates/loopd/src/main.rs`,
-  `docs/implementer-log.md`.
+  `crates/loopd/tests/ask_memory_tool.rs`, `docs/implementer-log.md`.
 - Do not touch: any other file.
 
 ## Facts you need
@@ -174,6 +175,27 @@ become
 
 If `main.rs` already has `use loopd::tools::{Registry, ToolPort};`, write `Registry::m5c()`.
 
+### `crates/loopd/tests/ask_memory_tool.rs`
+
+**A1.** `loopd_serve_uses_the_m5c_registry` counts `Registry::m5c()` in `main.rs`. Today that
+count is 1 (`Context::new`). M1 and M2 add two more. The lines
+
+```rust
+        main.matches("Registry::m5c()").count(),
+        1,
+        "main.rs uses m5c()"
+```
+
+become
+
+```rust
+        main.matches("Registry::m5c()").count(),
+        3,
+        "main.rs uses m5c()"
+```
+
+The test still forbids `m2b()`, `m3a()` and `m5a()` in `main.rs`. Do not weaken that.
+
 ## Steps
 
 - [ ] **1. Copy the given files.**
@@ -186,12 +208,13 @@ If `main.rs` already has `use loopd::tools::{Registry, ToolPort};`, write `Regis
 - [ ] **2. See it fail.** `cargo build --tests --keep-going -p loopd`, timeout 600000 ms: test
   target `config_heartbeat` does not compile (`E0609` no field `heartbeat`, `E0599` no method
   `heartbeat_prompt` / `check_summarise`). Every other target compiles.
-- [ ] **3. The edits.** H1 to H4, M1, M2, in order. `cargo check -p loopd` prints no error and
+- [ ] **3. The edits.** H1 to H4, M1, M2, A1, in order. `cargo check -p loopd` prints no error and
   no warning.
 - [ ] **4. The tests.** `cargo test -p loopd --test config_heartbeat --test config --test
-  config_compact`: every test passes, 8 in `config_heartbeat`.
-- [ ] **5. Check.** `git diff --stat` lists `crates/loopd/src/config.rs` and
-  `crates/loopd/src/main.rs`. `git status --short` shows the new test and `config/heartbeat.md`.
+  config_compact --test ask_memory_tool`: every test passes, 8 in `config_heartbeat`.
+- [ ] **5. Check.** `git diff --stat` lists `crates/loopd/src/config.rs`,
+  `crates/loopd/src/main.rs` and `crates/loopd/tests/ask_memory_tool.rs`. `git status --short`
+  shows the new test and `config/heartbeat.md`.
 - [ ] **6. Run the gate.** `cargo fmt --all`, then `make gate`, timeout 600000 ms. Last line
   `gate: ok`. Test count **1526** (1518 before, plus 8).
 - [ ] **7. Log and commit.** Task cell `M5d2/03-loopd-heartbeat-config`. Stage with
@@ -202,14 +225,15 @@ If `main.rs` already has `use loopd::tools::{Registry, ToolPort};`, write `Regis
 
 - `make gate` prints `gate: ok` with 1526 tests.
 - `git diff HEAD~1 --stat` lists only `crates/loopd/src/config.rs`, `crates/loopd/src/main.rs`,
-  `crates/loopd/tests/config_heartbeat.rs`, `config/heartbeat.md` and the log.
+  `crates/loopd/tests/ask_memory_tool.rs`, `crates/loopd/tests/config_heartbeat.rs`,
+  `config/heartbeat.md` and the log.
 
 ## Stop and report if
 
 - The branch check fails; a "before" block is not found exactly once; step 2 differs; `cargo
-  check` warns; a test fails; the gate count is not 1526; you join `heartbeat.prompt` onto
-  `system.md`'s directory instead of the config file's parent; you reject an empty `summarise`
-  list; you check names inside `parse`.
+  check` warns; a test fails; the gate count is not 1526; you leave the `m5c()` count at 1;
+  you join `heartbeat.prompt` onto `system.md`'s directory instead of the config file's parent;
+  you reject an empty `summarise` list; you check names inside `parse`.
 
 ## What the given tests pin