Add harvest_update_time_entry tool

Inherited surface from southleft had create + stop_timer + delete but
no update path — meaning edits required delete + recreate (losing the
entry ID, breaking any external_reference links).

Tool wraps HarvestClient.updateTimeEntry which was already implemented
in src/harvest/client.ts. Schema mirrors UpdateTimeEntryParams: id
required, every other field optional (PATCH semantics — only provided
fields change).

Tool count: 21 -> 22. README + landing-page anchor updated.

Author: grantkang5

README.md

@@ -54,14 +54,15 @@ Works the same in claude.ai web, Claude Desktop, and Claude Code — the Connect
 
 ---
 
-## Available tools (21)
+## Available tools (22)
 
 ### Time tracking
 | Tool | Description |
 |------|-------------|
 | `harvest_list_time_entries` | List and filter time entries by user, client, project, date range |
 | `harvest_get_time_entry` | Get a specific time entry by ID |
 | `harvest_create_time_entry` | Create new time entries with optional timer |
+| `harvest_update_time_entry` | Patch fields on an existing time entry |
 | `harvest_stop_timer` | Stop a running timer |
 | `harvest_delete_time_entry` | Delete a time entry |
 

src/tools/index.ts

@@ -358,6 +358,52 @@ export function registerTools(
     }
   );
 
+  server.tool(
+    'harvest_update_time_entry',
+    'Update an existing time entry. Only the provided fields are changed; others are left intact.',
+    {
+      id: z.number().describe('Time entry ID to update'),
+      project_id: z.number().optional().describe('New project ID'),
+      task_id: z.number().optional().describe('New task ID'),
+      spent_date: z.string().optional().describe('New date (YYYY-MM-DD)'),
+      hours: z.number().optional().describe('New hours'),
+      notes: z.string().optional().describe('New notes/description'),
+      started_time: z.string().optional().describe('New start time (HH:MM, 12h format like "9:00am")'),
+      ended_time: z.string().optional().describe('New end time (HH:MM, 12h format like "5:00pm")'),
+    },
+    async ({ id, ...patch }) => {
+      const client = await getHarvestClient(session, sessionStore, config);
+
+      if (!client) {
+        const authUrl = getAuthUrl(session, config);
+        return {
+          content: [
+            {
+              type: 'text',
+              text: `Authentication required. Please authorize the application:\n\n${authUrl}`,
+            },
+          ],
+          isError: true,
+        };
+      }
+
+      try {
+        const timeEntry = await client.updateTimeEntry(id, patch);
+        return {
+          content: [{ type: 'text', text: JSON.stringify(timeEntry, null, 2) }],
+        };
+      } catch (error) {
+        if (error instanceof HarvestApiError) {
+          return {
+            content: [{ type: 'text', text: `Harvest API error: ${error.message}` }],
+            isError: true,
+          };
+        }
+        throw error;
+      }
+    }
+  );
+
   server.tool(
     'harvest_stop_timer',
     'Stop a running timer on a time entry',

src/workers/index.ts

@@ -490,9 +490,9 @@ app.get('/', (c) => {
             <div class="logo-text">Harvest <span>MCP</span></div>
           </a>
           <div class="header-links">
-            <a href="https://github.com/TheBeyondGroup/harvest-mcp#available-tools-21" target="_blank">
+            <a href="https://github.com/TheBeyondGroup/harvest-mcp#available-tools-22" target="_blank">
               <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"/></svg>
-              21 Tools
+              22 Tools
             </a>
             <a href="https://github.com/TheBeyondGroup/harvest-mcp" target="_blank">
               <svg viewBox="0 0 24 24" fill="currentColor"><path d="M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z"/></svg>