Skip to main content

PXI in the Terminal#

June 26, 2026

Available in @arizeai/phoenix-cli 1.6.0+ (beta). Requires a Phoenix server running arize-phoenix 17.12.0+.

PXI now runs as an interactive chat right in your shell. It is the same server-side agent that powers the in-browser experience — the CLI connects to a running Phoenix instance, so model credentials, skills, and permissions stay configured on the server. Because the agent runs on the server, the CLI requires a Phoenix instance on arize-phoenix 17.12.0 or newer.

Run it without installing anything:

Or install the CLI globally and use the pxi command directly:

Point it at your Phoenix instance with environment variables, or pass --endpoint and --api-key flags:

  • Pick the model — --provider and --model select the model (defaults to Anthropic claude-opus-4-8); --custom-provider-id targets a custom provider configured under Settings → Models
  • Launch preflight — on startup the client checks the server’s model catalog and credentials, surfacing configuration problems as a clean error before the chat opens (skip with --skip-model-preflight)
  • Stay in control — edits are proposed as accept/reject diffs by default; pass --bypass-edits to apply them automatically, or --enable-web-access to let PXI consult the web for grounding
  • Saved profiles — reuse a stored Phoenix CLI connection with --profile <name>

Slash commands are available in @arizeai/phoenix-cli 1.6.1+: type /clear to reset the conversation, /exit to quit, or /help to list available commands. The input prompt syntax-highlights command tokens and shows a live completion list as you type.

PXI Agent

Enable PXI on your deployment and learn what it can do.

Annotation Summary in Project Settings#

June 30, 2026

Available in arize-phoenix 17.14.0+

Project settings now include an annotations summary showing every annotation name applied in the project, grouped by what it is attached to.

  • Counts by name — separate cards for Span Annotations, Trace Annotations, and Session Annotations list each annotation name alongside how many annotations use it
  • Bulk delete by name — remove every annotation of a given name in one action, optionally restricted to a time range; deletion is gated by project permissions

Copyable Trace ID in Experiment Trace Details#

June 25, 2026

Available in arize-phoenix 17.12.0+

The trace details dialog opened from experiment views (compare, list, and table) now shows the trace ID as a badge with a copy-to-clipboard button, so you can grab the ID for debugging without leaving the dialog.