Changelog

Release notes and changes from the Pi changelog.

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Release notes

Pi 0.52.9

New version of pi. Download from npm or view release on GitHub.

New Features

  • Extensions can trigger a full runtime reload via ctx.reload(), useful for hot-reloading configuration or restarting the agent. See docs/extensions.md and the reload-runtime example (#1371)
  • Short CLI disable aliases: -ne (--no-extensions), -ns (--no-skills), and -np (--no-prompt-templates) for faster interactive usage and scripting.
  • /export HTML now includes collapsible tool input schemas (parameter names, types, and descriptions), improving session review and sharing workflows (#1416 by @marchellodev).
  • pi.getAllTools() now exposes tool parameters in addition to name and description, enabling richer extension integrations (#1416 by @marchellodev).

Added

  • Added ctx.reload() to the extension API for programmatic runtime reload (#1371)
  • Added short aliases for disable flags: -ne for --no-extensions, -ns for --no-skills, -np for --no-prompt-templates
  • /export HTML now includes tool input schema (parameter names, types, descriptions) in a collapsible section under each tool (#1416 by @marchellodev)
  • pi.getAllTools() now returns tool parameters in addition to name and description (#1416 by @marchellodev)

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Release notes

Pi 0.52.8

New version of pi. Download from npm or view release on GitHub.

New Features

  • Emacs-style kill ring (ctrl+k/ctrl+y/alt+y) and undo (ctrl+z) in the editor input (#1373 by @Perlence)
  • OpenRouter auto model alias (openrouter:auto) for automatic model routing (#1361 by @yogasanas)
  • Extensions can programmatically paste content into the editor via pasteToEditor in the extension UI context. See docs/extensions.md (#1351 by @kaofelix)
  • pi <package> --help and invalid subcommands now show helpful output instead of failing silently (#1347 by @ferologics)

Added

  • Added pasteToEditor to extension UI context for programmatic editor paste (#1351 by @kaofelix)
  • Added package subcommand help and friendly error messages for invalid commands (#1347 by @ferologics)
  • Added OpenRouter auto model alias for automatic model routing (#1361 by @yogasanas)
  • Added kill ring (ctrl+k/ctrl+y/alt+y) and undo (ctrl+z) support to the editor input (#1373 by @Perlence)

Changed

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Release notes

Pi 0.52.7

New version of pi. Download from npm or view release on GitHub.

New Features

  • Per-model overrides in models.json via modelOverrides, allowing customization of built-in provider models without replacing provider model lists. See docs/models.md#per-model-overrides.
  • models.json provider models now merge with built-in models by id, so custom models can be added or replace matching built-ins without full provider replacement. See docs/models.md#overriding-built-in-providers.
  • Bedrock proxy support for unauthenticated endpoints via AWS_BEDROCK_SKIP_AUTH and AWS_BEDROCK_FORCE_HTTP1. See docs/providers.md.

Breaking Changes

  • Changed models.json provider models behavior from full replacement to merge-by-id with built-in models. Built-in models are now kept by default, and custom models upsert by id.

Added

  • Added modelOverrides in models.json to customize individual built-in models per provider without full provider replacement (#1332 by @charles-cooper)
  • Added AWS_BEDROCK_SKIP_AUTH and AWS_BEDROCK_FORCE_HTTP1 environment variables for connecting to unauthenticated Bedrock proxies (#1320 by @virtuald)

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Release notes

Pi 0.52.3

New version of pi. Download from npm or view release on GitHub.

Fixed

  • Fixed git package parsing fallback for unknown hosts so enterprise git sources like git:github.tools.sap/org/repo are treated as git packages instead of local paths
  • Fixed git package @ref parsing for shorthand, HTTPS, and SSH source formats, including branch refs with slashes
  • Fixed Bedrock default model ID from us.anthropic.claude-opus-4-6-v1:0 to us.anthropic.claude-opus-4-6-v1
  • Fixed Bedrock Opus 4.6 model metadata (IDs, cache pricing) and added missing EU profile
  • Fixed Claude Opus 4.6 context window metadata to 200000 for Anthropic and OpenCode providers

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Release notes

Pi 0.52.2

New version of pi. Download from npm or view release on GitHub.

Changed

  • Updated default model for anthropic provider to claude-opus-4-6
  • Updated default model for openai-codex provider to gpt-5.3-codex
  • Updated default model for amazon-bedrock provider to us.anthropic.claude-opus-4-6-v1:0
  • Updated default model for vercel-ai-gateway provider to anthropic/claude-opus-4-6
  • Updated default model for opencode provider to claude-opus-4-6

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Release notes

Pi 0.52.0

New version of pi. Download from npm or view release on GitHub.

New Features

  • Claude Opus 4.6 model support.
  • GPT-5.3 Codex model support (OpenAI Codex provider only).
  • SSH URL support for git packages. See docs/packages.md.
  • auth.json API keys now support shell command resolution (!command) and environment variable lookup. See docs/providers.md.
  • Model selectors now display the selected model name.

Added

  • API keys in auth.json now support shell command resolution (!command) and environment variable lookup, matching the behavior in models.json
  • Added minimal-mode.ts example extension demonstrating how to override built-in tool rendering for a minimal display mode
  • Added Claude Opus 4.6 model to the model catalog
  • Added GPT-5.3 Codex model to the model catalog (OpenAI Codex provider only)
  • Added SSH URL support for git packages (#1287 by @markusn)
  • Model selectors now display the selected model name (#1275 by @haoqixu)

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Release notes

Pi 0.51.6

New version of pi. Download from npm or view release on GitHub.

New Features

Added

  • Added resume as a configurable keybinding action, allowing users to bind a key to open the session resume selector (like newSession, tree, and fork) (#1249 by @juanibiapina)

Changed

  • Slash command menu now triggers on the first line even when other lines have content, allowing commands to be prepended to existing text (#1227 by @aliou)

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Release notes

Pi 0.51.4

New version of pi. Download from npm or view release on GitHub.

New Features

  • Share URLs now default to pi.dev, graciously donated by exe.dev.

Changed

  • Share URLs now use pi.dev by default while pi.dev and buildwithpi.ai continue to work.

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Release notes

Pi 0.51.3

New version of pi. Download from npm or view release on GitHub.

New Features

Breaking Changes

  • RPC get_commands response and SlashCommandSource type: renamed "template" to "prompt" for consistency with the rest of the codebase

Added

  • Added ExtensionAPI.getCommands() to let extensions list available slash commands (extensions, prompt templates, skills) for invocation via prompt (#1210 by @w-winter)
  • Added commands.ts example extension and exported SlashCommandInfo types for command discovery integrations (#1210 by @w-winter)
  • Added local path support for pi install and pi remove with relative paths stored against the target settings file (#1216)

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Release notes

Pi 0.51.1

New version of pi. Download from npm or view release on GitHub.

New Features

  • Extension API switchSession: Extensions can now programmatically switch sessions via ctx.switchSession(sessionPath). See docs/extensions.md. (#1187)
  • Clear on shrink setting: New terminal.clearOnShrink setting keeps the editor and footer pinned to the bottom of the terminal when content shrinks. May cause some flicker due to redraws. Disabled by default. Enable via /settings or PI_CLEAR_ON_SHRINK=1 env var.

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Release notes

Pi 0.51.0

New version of pi. Download from npm or view release on GitHub.

Breaking Changes

  • Extension tool signature change: ToolDefinition.execute now uses (toolCallId, params, signal, onUpdate, ctx) parameter order to match AgentTool.execute. Previously it was (toolCallId, params, onUpdate, ctx, signal). This makes wrapping built-in tools trivial since the first four parameters now align. Update your extensions by swapping the signal and onUpdate parameters:
    // Before
async execute(toolCallId, params, onUpdate, ctx, signal) { ... }

// After
async execute(toolCallId, params, signal, onUpdate, ctx) { ... }

New Features

  • Android/Termux support: Pi now runs on Android via Termux. Install with:
    pkg install nodejs termux-api git
npm install -g @mariozechner/pi-coding-agent
mkdir -p ~/.pi/agent
echo "You are running on Android in Termux." > ~/.pi/agent/AGENTS.md
    Clipboard operations fall back gracefully when termux-api is unavailable. (#1164)
  • Bash spawn hook: Extensions can now intercept and modify bash commands before execution via pi.setBashSpawnHook(). Adjust the command string, working directory, or environment variables. See docs/extensions.md. (#1160 by @mitsuhiko)
  • Linux ARM64 musl support: Pi now runs on Alpine Linux ARM64 (linux-arm64-musl) via updated clipboard dependency.
  • Nix/Guix support: PI_PACKAGE_DIR environment variable overrides the package path for content-addressed package managers where store paths tokenize poorly. See README.md#environment-variables. (#1153 by @odysseus0)
  • Named session filter: /resume picker now supports filtering to show only named sessions via Ctrl+N. Configurable via toggleSessionNamedFilter keybinding. See docs/keybindings.md. (#1128 by @w-winter)
  • Typed tool call events: Extension developers can narrow ToolCallEvent types using isToolCallEventType() for better TypeScript support. See docs/extensions.md#tool-call-events. (#1147 by @giuseppeg)
  • Extension UI Protocol: Full RPC documentation and examples for extension dialogs and notifications, enabling headless clients to support interactive extensions. See docs/rpc.md#extension-ui-protocol. (#1144 by @aliou)

Added

  • Added Linux ARM64 musl (Alpine Linux) support via clipboard dependency update
  • Added Android/Termux support with graceful clipboard fallback (#1164)
  • Added bash tool spawn hook support for adjusting command, cwd, and env before execution (#1160 by @mitsuhiko)
  • Added typed ToolCallEvent.input per tool with isToolCallEventType() type guard for narrowing built-in tool events (#1147 by @giuseppeg)
  • Exported discoverAndLoadExtensions from package to enable extension testing without a local repo clone (#1148)
  • Added Extension UI Protocol documentation to RPC docs covering all request/response types for extension dialogs and notifications (#1144 by @aliou)
  • Added rpc-demo.ts example extension exercising all RPC-supported extension UI methods (#1144 by @aliou)
  • Added rpc-extension-ui.ts TUI example client demonstrating the extension UI protocol with interactive dialogs (#1144 by @aliou)
  • Added PI_PACKAGE_DIR environment variable to override package path for content-addressed package managers (Nix, Guix) where store paths tokenize poorly (#1153 by @odysseus0)
  • /resume session picker now supports named-only filter toggle (default Ctrl+N, configurable via toggleSessionNamedFilter) to show only named sessions (#1128 by @w-winter)

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Release notes

Pi 0.50.9

New version of pi. Download from npm or view release on GitHub.

Added

  • Added titlebar-spinner.ts example extension that shows a braille spinner animation in the terminal title while the agent is working.
  • Added PI_AI_ANTIGRAVITY_VERSION environment variable documentation to help text (#1129)
  • Added cacheRetention stream option with provider-specific mappings for prompt cache controls, defaulting to short retention (#1134)

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Release notes

Pi 0.50.8

New version of pi. Download from npm or view release on GitHub.

Added

  • Added newSession, tree, and fork keybinding actions for /new, /tree, and /fork commands. All unbound by default. (#1114 by @juanibiapina)
  • Added retry.maxDelayMs setting to cap maximum server-requested retry delay. When a provider requests a longer delay (e.g., Google's "quota will reset after 5h"), the request fails immediately with an informative error instead of waiting silently. Default: 60000ms (60 seconds). (#1123)
  • /resume session picker: new "Threaded" sort mode (now default) displays sessions in a tree structure based on fork relationships. Compact one-line format with message count and age on the right. (#1124 by @pasky)
  • Added Qwen CLI OAuth provider extension example. (#940 by @4h9fbZ)
  • Added OAuth modifyModels hook support for extension-registered providers at registration time. (#940 by @4h9fbZ)
  • Added Qwen thinking format support for OpenAI-compatible completions via enable_thinking. (#940 by @4h9fbZ)
  • Added sticky column tracking for vertical cursor navigation so the editor restores the preferred column when moving across short lines. (#1120 by @Perlence)
  • Added resources_discover extension hook to supply additional skills, prompts, and themes on startup and reload.

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Release notes

Pi 0.50.7

New version of pi. Download from npm or view release on GitHub.

Fixed

  • Multi-file extensions in packages now work correctly. Package resolution now uses the same discovery logic as local extensions: only index.ts (or manifest-declared entries) are loaded from subdirectories, not helper modules. (#1102)

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