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castify
Make asciinema recordings scriptable. Instead of performing a session live by hand, script every keystroke and pause in a file via a tmux-driven harness — so casts are reproducible, deterministic, and automatable, and so interactive TUIs like fzf can be recorded at all. Includes the recording library, a clean recording prompt, a runnable example, and an end-to-end web-embedding guide.
README
nivintw-claude-skills
Tyler Nivin's Claude Code plugin marketplace.
Plugins
castify
Scriptable asciinema recordings. asciinema records a live session you perform by hand; castify lets you script the session — every keystroke and pause in a file — so a cast is reproducible (re-record it after a UI change), deterministic (pacing is in the script, not your typing), and automatable.
The enabling trick is the payoff, too: castify drives the recording through a
tmux pane with tmux send-keys, writing keystrokes into the session's real
PTY. That's the only way to script interactive TUIs like fzf, less, or
vim — they read the controlling TTY, not stdin, so you can't pipe input to
them. Turn the result into clean, embeddable casts. It's the pipeline behind the
"Commands" page of nivintw/dotfiles:
record → verify → embed.
It ships one skill — record-terminal-casts — plus a reusable recording library and an end-to-end web-embedding guide:
| Piece | What it is |
|---|---|
skills/record-terminal-casts/SKILL.md | The method and step-by-step process |
…/scripts/cast-lib.sh | tmux-driven recording harness (start_rec/type_in/key/pause/end_rec) |
…/scripts/launch.sh · recprompt.fish | Clean-shell recorder + on-brand prompt |
…/scripts/example-fixtures.sh · example-record.sh | A complete, runnable worked example |
…/reference/embedding.md | Vendoring asciinema-player + HTML/CSS/JS + REUSE licensing |
Install
/plugin marketplace add nivintw/nivintw-claude-skills
/plugin install castify@nivintw-claude-skills
Or from a local clone:
/plugin marketplace add ~/workspace/nivintw-claude-skills
Then just ask Claude Code to record a terminal cast of a command — the skill activates on its own.
Use castify directly (no Claude Code)
The scripts stand alone. Requires tmux and asciinema.
cd plugins/castify/skills/record-terminal-casts/scripts
CAST_LAB=/tmp/castlab bash example-fixtures.sh
CAST_OUT=./casts CAST_LAB=/tmp/castlab bash example-record.sh
asciinema convert -f txt ./casts/fco.cast /dev/stdout # verify
See plugins/castify/skills/record-terminal-casts/reference/embedding.md to put
the resulting .cast files on a web page.
License
MIT — see LICENSE. castify's embedding guide vendors asciinema-player, which is Apache-2.0; the guide covers licensing it correctly in your own repo.
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Version0.2.0
LanguageShell
Stars0
MaintenanceGood
LicenseMIT
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