Agent Breaking Changes_

← Pi

Pi v0.84.1

2026-08-07 · official notes

Summary

• New Features
• Qwen Token Plan Individual — Use the built-in provider for models documented for Individual subscriptions. See API Keys.
• Authentication readiness checks — Use pi auth check to verify provider or model credentials, optionally emitting the resolved credential.

Full notes

### New Features

- **Qwen Token Plan Individual** — Use the built-in provider for models documented for Individual subscriptions. See [API Keys](https://github.com/earendil-works/pi/blob/v0.84.1/packages/coding-agent/docs/providers.md#api-keys).
- **Authentication readiness checks** — Use `pi auth check` to verify provider or model credentials, optionally emitting the resolved credential.
- **Improved fullscreen interaction** — Select words and paragraphs with multiple clicks and configure half-page transcript scrolling. See [TUI Fullscreen Viewport](https://github.com/earendil-works/pi/blob/v0.84.1/packages/coding-agent/docs/keybindings.md#tui-fullscreen-viewport).
- **Terminating blocked tool calls** — Extension `tool_call` handlers can stop all-terminating batches without another model call. See [Tool Events](https://github.com/earendil-works/pi/blob/v0.84.1/packages/coding-agent/docs/extensions.md#tool-events).

### Added

- Added Qwen Token Plan Individual as a built-in provider with its documented subscription model catalog and the shared international `QWEN_TOKEN_PLAN_API_KEY`. See [API Keys](https://github.com/earendil-works/pi/blob/v0.84.1/packages/coding-agent/docs/providers.md#api-keys) ([#7659](https://github.com/earendil-works/pi/pull/7659) by [@arasovic](https://github.com/arasovic)).
- Added `pi auth check` provider/model auth preflight with optional credential output ([#7152](https://github.com/earendil-works/pi/issues/7152)).
- Added `terminate` support to blocked extension `tool_call` events so all-terminating batches can skip the automatic follow-up model call. See [Tool Events](https://github.com/earendil-works/pi/blob/v0.84.1/packages/coding-agent/docs/extensions.md#tool-events) ([#7715](https://github.com/earendil-works/pi/pull/7715) by [@muyiyr](https://github.com/muyiyr)).
- Added inherited double-click word and whitespace selection, granularity-aware drag selection, and triple-click paragraph selection in fullscreen mode ([#7725](https://github.com/earendil-works/pi/issues/7725), [#7733](https://github.com/earendil-works/pi/pull/7733) by [@volsa](https://github.com/volsa)).
- Added inherited unbound half-page transcript scrolling actions for fullscreen mode. See [TUI Fullscreen Viewport](https://github.com/earendil-works/pi/blob/v0.84.1/packages/coding-agent/docs/keybindings.md#tui-fullscreen-viewport) ([#7735](https://github.com/earendil-works/pi/issues/7735)).

### Changed

- Softened the bash tool's `PI_*` environment guideline in an attempt to reduce unnecessary inspection commands ([#7128](https://github.com/earendil-works/pi/issues/7128)).
- Reduced worst-case automatic terminal theme detection delay from 200 ms to 100 ms by probing color-scheme and background support concurrently.

### Fixed

- Fixed Bun standalone binaries crashing on startup when the cwd contains a `bunfig.toml` with `preload` by compiling with `--no-compile-autoload-bunfig` ([#7685](https://github.com/earendil-works/pi/pull/7685) by [@geril07](https://github.com/geril07)).
- Fixed extension TUI method wrappers recursing indefinitely when delegating to the original method ([#7731](https://github.com/earendil-works/pi/issues/7731)).
- Fixed right-click not pasting clipboard text in fullscreen mode on Windows.
- Fixed inherited `Agent.reset()` clearing transcript and runtime state during active runs; it now rejects until the agent is idle ([#7717](https://github.com/earendil-works/pi/pull/7717) by [@wesleyzhangwq](https://github.com/wesleyzhangwq)).
- Fixed inherited LaTeX relation, multiplication, and named-operator spacing, and matrix composition with stacked fractions, operator limits, and adjacent matrices.
- Reduced inherited fullscreen mouse event volume under tmux, Zellij, and GNU Screen by using button-motion tracking instead of all-motion tracking.