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+# /syncro — Syncro PSA ticket management
+
+Create, update, close, comment on, and bill tickets in Syncro PSA.
+
+## Usage
+
+```
+/syncro                                  Show open tickets summary
+/syncro ticket <number>                  View ticket details + comments
+/syncro create <customer> <subject>      Create new ticket
+/syncro update <number> <status>         Update ticket status
+/syncro close <number>                   Close/resolve a ticket
+/syncro comment <number> <text>          Add a comment to a ticket
+/syncro bill <number>                    Create invoice from ticket time entries
+/syncro search <query>                   Search tickets by subject/customer
+/syncro customers <query>                Search customers
+```
+
+## API Configuration
+
+**Base URL:** `https://computerguru.syncromsp.com/api/v1`
+**API Key:** SOPS vault `msp-tools/syncro.sops.yaml` → `credentials.credential`
+**Rate limit:** 180 requests/minute per IP
+**Docs:** https://api-docs.syncromsp.com/
+
+## Implementation
+
+When invoked, use the Syncro REST API via `curl`. All requests include `?api_key=<key>` as query parameter (NOT in header — Syncro uses query param auth).
+
+### Get API key
+
+```bash
+API_KEY=$(bash D:/vault/scripts/vault.sh get-field msp-tools/syncro.sops.yaml credentials.credential)
+BASE="https://computerguru.syncromsp.com/api/v1"
+```
+
+If `vault.sh get-field` fails (yq not installed), fall back to:
+```bash
+API_KEY=$(sops -d D:/vault/msp-tools/syncro.sops.yaml | python -c "import sys,yaml; print(yaml.safe_load(sys.stdin)['credentials']['credential'])")
+```
+
+### Endpoints reference
+
+#### Tickets
+
+| Operation | Method | Endpoint | Body |
+|---|---|---|---|
+| List tickets | GET | `/tickets?status=<status>&per_page=25` | — |
+| Get ticket | GET | `/tickets/<id>` | — |
+| Create ticket | POST | `/tickets` | `{"customer_id": N, "subject": "...", "problem_type": "...", "status": "New"}` |
+| Update ticket | PUT | `/tickets/<id>` | `{"status": "In Progress", "priority": "..."}` |
+| Delete ticket | DELETE | `/tickets/<id>` | — |
+
+**Ticket statuses:** `New`, `In Progress`, `Waiting on Customer`, `Waiting on Vendor`, `Scheduled`, `Resolved`, `Invoiced`, `Closed`
+
+**Ticket fields (create/update):**
+- `customer_id` (required for create)
+- `subject` (required for create)
+- `problem_type` (string, free-form)
+- `status` (string, one of the statuses above)
+- `priority` (string)
+- `due_date` (ISO date)
+- `user_id` (assign to tech)
+- `contact_id` (customer contact)
+- `ticket_type_id` (ticket category)
+
+#### Comments
+
+| Operation | Method | Endpoint | Body |
+|---|---|---|---|
+| Add comment | POST | `/tickets/<id>/comment` | `{"subject": "Update", "body": "...", "hidden": false, "do_not_email": false}` |
+
+**Comment fields:**
+- `subject` — comment header (e.g., "Update", "Resolution", "Internal Note")
+- `body` — comment text (HTML supported)
+- `hidden` — if true, internal-only (customer can't see)
+- `do_not_email` — if true, don't email customer about this comment
+
+#### Customers
+
+| Operation | Method | Endpoint |
+|---|---|---|
+| List/search | GET | `/customers?query=<search>&per_page=25` |
+| Get customer | GET | `/customers/<id>` |
+| Create customer | POST | `/customers` |
+
+#### Invoices
+
+| Operation | Method | Endpoint | Body |
+|---|---|---|---|
+| List invoices | GET | `/invoices?per_page=25` |
+| Get invoice | GET | `/invoices/<id>` |
+| Create from ticket | POST | `/invoices` | `{"ticket_id": N, "customer_id": N}` |
+
+#### Line Items
+
+| Operation | Method | Endpoint | Body |
+|---|---|---|---|
+| Add line item | POST | `/line_items` | `{"invoice_id": N, "item": "...", "quantity": 1, "price": 125.00}` |
+
+#### Ticket Timers
+
+| Operation | Method | Endpoint |
+|---|---|---|
+| List | GET | `/ticket_timers?ticket_id=<id>` |
+| Create | POST | `/ticket_timers` |
+
+### Display formatting
+
+When showing ticket lists, format as:
+
+```
+#32164  New        Jerry Burger           Own cloud thing again
+#32163  New        LeeAnn Parkinson       Remote - Jim cant access his email
+#32162  Invoiced   Len's Auto Brokerage   Server upgrade
+```
+
+When showing ticket detail, include:
+- Ticket number, subject, status, priority
+- Customer name + contact
+- Created date, due date, last updated
+- Assigned tech
+- Comments (most recent first, truncated to last 5)
+- Time entries if any
+- Billing status
+
+### Billing workflow
+
+When `/syncro bill <number>` is called:
+1. Get ticket details + time entries
+2. Show summary: total billable time, line items that would be created
+3. Ask for confirmation: "Create invoice for $X? [yes/no]"
+4. On yes: POST `/invoices` with ticket_id, then add line items
+5. Update ticket status to "Invoiced"
+
+### Error handling
+
+- 401: API key invalid or expired
+- 404: ticket/customer/invoice not found
+- 422: validation error (show the error message from response body)
+- 429: rate limited (wait 60s and retry)
+
+### Integration with session logs
+
+When closing a ticket (`/syncro close`), offer to create a session log entry in `clients/<customer>/session-logs/` documenting what was resolved. Pull the ticket subject, comments, and resolution into a structured log.