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agenttail v0.3.0

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@ionut27001 ionut27001 released this 21 Oct 11:29
· 61 commits to main since this release
v0.3.0
e02d525

agenttail v0.3.0

Meet Tail, the console on stage, and honest numbers for Claude Code. The
logo's chevron grew an eye and moved into the editor: it reacts to what the
agent does, thinks out loud while the model thinks and plays games on a long
think. Still a local, read-only viewer by default.

Tail thinking, then playing

Highlights

Tail, the mascot

  • Tail lives in the editor corner while a session is in motion. Its eye
    follows the pointer; it hops when a command passes, sweats when one fails,
    cheers when a turn ends, dozes off when nothing happens and likes being
    petted (not too fast). Settings can turn it off.
  • While the agent thinks, three dots rise into a thought bubble with a clock,
    the latest line of reasoning and some nonsense (catching kittens, what is
    42). Five quiet minutes and it falls asleep under a STALLED? warning.
  • On a long think it plays one of ten games by itself: snake, tetris, a
    runner, chess (two famous games replayed), chomp, space invaders, a
    geometry-dash level with ship sections, breakout, flappy and a shell-command
    typing game. ▶ play hands you the controls (arrows and space; Esc gives
    them back, N for the next game), and the best score per game is kept.
  • The logo is Tail now, in the README, the favicon, the wordmark and the boot
    banner.

Console on stage

  • The new default: a running command brings the console up over the editor,
    an edit sends it back to its dock, and a quiet console shrinks to a rail so
    the agent pane gets the room. The console header switches back to the plain
    docked console.

Claude Code

  • A cost for Claude sessions: what the same tokens would cost at Anthropic's
    API list prices, each reply priced by its own model, with cache reads,
    5-minute and 1-hour cache writes, Haiku 5.5's long-prompt rate card, Opus
    5.5 fast mode and web searches. It is labelled ≈ API: a subscription is not
    billed per token, so it is a yardstick, not your bill.
  • Token and step counts were about 2.5× too high: the transcript repeats a
    reply's usage on every content-block line, and each reply now counts once.
  • Claude sessions get turns, from a real prompt to end_turn or an interrupt,
    so the Log shows per-turn summaries and costs. The header names the model.
  • A session stays live while the model composes a long reply: a turn is open
    until the transcript says end_turn, not just while the file grows.

Watch wall

  • Every pane gets its own Tail in its agent's colour, reacting to that agent,
    with the thought bubble and the games (▶ play works there too; Esc ends the
    game before it closes the wall).
  • The pane scoreboard shows TOK/S.

Everywhere

  • TOK/S shows a number: output tokens per second over the last 30 seconds.
  • Themes: red redrawn as crimson and bone, a new neon (synthwave) theme, a
    separate success colour so success never looks like the accent or an error,
    and editor bracket pairs in each theme's own colours. Seven in all.
  • A very long running command no longer pushes the page wider than the window.
  • The README has a Meet Tail section, a themes mosaic and fresh captures.

Compatibility

  • Same Node 24+ requirement and log locations. Nothing to migrate.
  • Claude token and step totals drop for existing sessions: that is the
    double counting going away, not lost data.

Requirements

  • Node.js 24 or newer for the package/portable build.
  • The Windows standalone exe embeds Node and needs no installation.
  • Windows is tested. macOS and Linux are untested.

Stream-mode warning

Stream mode is on by default and redacts secrets, identity, network addresses and several opaque identifiers before anything reaches the browser. Redaction reduces risk; it is not a guarantee. Review the stream before sharing or recording it.

Known limits

  • The Windows exe is unsigned, so SmartScreen may warn. Verify the SHA-256 checksum before running it.
  • Only newer sessions are listed (60 dsh/Claude, 40 Antigravity).
  • The Claude API-equivalent cost uses list prices (no batch, regional or long-context surcharges) and skips models without a list price.
  • Peak/off-peak pricing ignores public holidays; GPU metering needs nvidia-smi.

Artifacts

  • agenttail-0.3.0.tgz — npm package (not on the npm registry yet: npx github:ionut27001/agenttail).
  • agenttail-0.3.0-portable.zip — source plus start.cmd / start.sh, for Node 24+.
  • agenttail-0.3.0-win-x64.exe — standalone Windows x64 build (unsigned).

Verify the checksums

Get-FileHash .\agenttail-0.3.0.tgz, .\agenttail-0.3.0-portable.zip, .\agenttail-0.3.0-win-x64.exe -Algorithm SHA256

Compare the output with SHA256SUMS.txt.

License

MIT © 2026 ionut27001. agenttail is not affiliated with DeepSeek, Anthropic or Google. Product names are used only to describe supported sources.

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