This transcript follows the Prismattyc 0.2.27 demo reel. Saved Spaces restore layouts; they do not preserve running processes across a computer restart.

The recording covers keyboard shortcuts and keybindings, terminal rendering, split panes and tabs, saved Spaces, agent messaging, and accessibility settings.

1. 00:07 This is Prismattyc, a terminal and multiplexer built in Rust.
2. 00:10 You can organize your work into spaces,
3. 00:13 keep sessions running when you close a window,
4. 00:16 and let coding agents talk to each other.
5. 00:19 Let's take a look.
6. 00:21 Hold Control and Shift, and the shortcut guide appears along the bottom.
7. 00:26 Ctrl+Enter and the other modified Return keys now reach the programs
8. 00:31 and agents in a pane.
9. 00:33 You can rebind any action with one short entry in the keys table,
10. 00:38 or disable it with an empty list.
11. 00:41 The active binding list shows every chord, including unbound actions.
12. 00:45 Open the command palette and type what you're looking for.
13. 00:48 Let's find the theme picker.
14. 00:50 As you move through the themes, the window updates right away.
15. 00:54 Pick one you like, press Enter, and carry on.
16. 00:58 Color and text are where a terminal earns its keep.
17. 01:02 Here's true color, followed by wide characters, emoji, and combining marks.
18. 01:08 Box drawing, blocks, braille, and powerline symbols line up with the cell grid.
19. 01:14 Prismattyc also draws images sent with the Kitty graphics protocol.
20. 01:19 When output scrolls past, move back through the history and search for a match.
21. 01:31 Split the window, move between panes with Alt and the arrows, or switch to a grid.
22. 01:37 Zoom a pane for a closer look, then bring the others back.
23. 01:42 Tabs help separate the work.
24. 01:43 I'll name these build and logs.
25. 01:45 The pane handles make it easy to see which terminal is which.
26. 01:55 You can name a pane too.
27. 01:57 That name stays with its handle, so it is easier to find later.
28. 02:03 The handles also show activity.
29. 02:05 This pane is printing output,
30. 02:07 and its indicator stays busy while I work somewhere else.
31. 02:12 Behind the window, pmux keeps sessions running when you close a viewer.
32. 02:16 Come back later and pick up where you left off.
33. 02:20 Here is that in a plain terminal.
34. 02:22 I'll attach to a session, leave a message, detach, and attach again.
35. 02:27 The same shell is still running.
36. 02:33 Save an arrangement as a space, and it gets a place on the rail.
37. 02:38 Keep separate layouts for different jobs,
38. 02:40 move the rail, or change how new terminals open.
39. 02:45 Now let's bring in two coding agents, Codex and Muse.
40. 02:49 Each has its own isolated session and mailbox.
41. 02:53 Both use pmux tools through MCP.
42. 02:56 I'll ask Codex to send Muse a short question.
43. 02:59 Codex calls the mail tool, and pmux delivers the letter.
44. 03:10 Muse's mail indicator rings when Codex sends a note.
45. 03:13 Muse reads it, replies, and marks the letter handled.
46. 03:19 And here's the answer back in Codex's pane.
47. 03:22 That's the round trip: send, read, reply, and finish.
48. 03:26 Each agent stays in its own session.
49. 03:31 Prismattyc exposes tabs, pane names, and controls to supported screen readers.
50. 03:41 Announcements report incoming mail and requests for your attention.
51. 03:44 You can turn them off and leave the accessibility tree available.
52. 03:50 Pane messaging can write to one shell at a time.
53. 03:54 Here I send the command seq one through ten thousand
54. 03:57 and check both the receipt and the output.
55. 04:00 A one-pane write sends a prompt to an agent and returns a receipt.
56. 04:05 Enter is sent separately, and the submitted prompt gets a reply in that pane.
57. 04:12 That's Prismattyc.
58. 04:13 One place for your terminals, your spaces, and the agents working alongside you.
59. 04:18 Thanks for taking a look.