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+# Phase 7: AI Tools for Date-Based Notes
+
+**Status:** Not started
+**Depends on:** Phase 1 (daily-notes.ts)
+**Output files:** `src/context/tools/read-daily-note.json`, `src/context/tools/write-daily-note.json`, modifications to `src/tools.ts`
+
+---
+
+## Overview
+
+Two new tools the AI can use to interact with the calendar structure: `read_daily_note` and `write_daily_note`.
+
+---
+
+## `read_daily_note` Tool
+
+### JSON Definition (`src/context/tools/read-daily-note.json`)
+
+```json
+{
+  "id": "read_daily_note",
+  "label": "Read Daily Note",
+  "description": "Read the daily note for a specific date",
+  "friendlyName": "Read Daily Note",
+  "requiresApproval": false,
+  "definition": {
+    "type": "function",
+    "function": {
+      "name": "read_daily_note",
+      "description": "Read the daily note for a given date. Use 'today' for the current date, or provide a date in YYYY-MM-DD format.",
+      "parameters": {
+        "type": "object",
+        "required": ["date"],
+        "properties": {
+          "date": {
+            "type": "string",
+            "description": "The date to read. Use 'today', 'yesterday', 'tomorrow', or a YYYY-MM-DD date string."
+          }
+        }
+      }
+    }
+  }
+}
+```
+
+### Execute Logic
+
+1. Parse the `date` argument — handle `"today"`, `"yesterday"`, `"tomorrow"`, or parse `YYYY-MM-DD` with `moment()`
+2. Compute the path using `getDailyNotePath()`
+3. If file exists: read and return content (same format as `read_file`)
+4. If not: return `"No daily note exists for {date}."`
+
+---
+
+## `write_daily_note` Tool
+
+### JSON Definition (`src/context/tools/write-daily-note.json`)
+
+```json
+{
+  "id": "write_daily_note",
+  "label": "Write Daily Note",
+  "description": "Write or append to the daily note for a specific date",
+  "friendlyName": "Write Daily Note",
+  "requiresApproval": true,
+  "definition": {
+    "type": "function",
+    "function": {
+      "name": "write_daily_note",
+      "description": "Write content to the daily note for a given date. Creates the note if it does not exist. Use mode 'append' to add to the end, or 'overwrite' to replace all content.",
+      "parameters": {
+        "type": "object",
+        "required": ["date", "content"],
+        "properties": {
+          "date": {
+            "type": "string",
+            "description": "The date to write to. Use 'today', 'yesterday', 'tomorrow', or a YYYY-MM-DD date string."
+          },
+          "content": {
+            "type": "string",
+            "description": "The content to write."
+          },
+          "mode": {
+            "type": "string",
+            "description": "Write mode: 'append' (default) adds to the end, 'overwrite' replaces all content."
+          }
+        }
+      }
+    }
+  }
+}
+```
+
+### Execute Logic
+
+1. Parse date (same as read)
+2. If file does not exist: create it with content (using `createDailyNote()` then write)
+3. If file exists:
+   - `"append"` (default): `app.vault.append(file, "\n" + content)`
+   - `"overwrite"`: `app.vault.modify(file, content)`
+4. Return confirmation message
+
+---
+
+## Registration in `src/tools.ts`
+
+- Import both JSON files
+- Add `TOOL_REGISTRY` entries that spread the JSON context and add runtime callbacks (`summarize`, `summarizeResult`, `execute`, and optionally `approvalMessage`)
+- Follow the existing pattern for other tools