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Release notes

Pi 0.52.10

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

New Features

  • Extension terminal input interception via terminal_input, allowing extensions to consume or transform raw input before normal TUI handling. See docs/extensions.md.
  • Expanded CLI model selection: --model now supports provider/id, fuzzy matching, and :<thinking> suffixes. See README.md and docs/models.md.
  • Safer package source handling with stricter git source parsing and improved local path normalization. See docs/packages.md.
  • New built-in model definition gpt-5.3-codex-spark for OpenAI and OpenAI Codex providers.
  • Improved OpenAI stream robustness for malformed trailing tool-call JSON in partial chunks.
  • Added built-in GLM-5 model support via z.ai and OpenRouter provider catalogs.

Breaking Changes

  • ContextUsage.tokens and ContextUsage.percent are now number | null. After compaction, context token count is unknown until the next LLM response, so these fields return null. Extensions that read ContextUsage must handle the null case. Removed usageTokens, trailingTokens, and lastUsageIndex fields from ContextUsage (implementation details that should not have been public) (#1382 by @ferologics)
  • Git source parsing is now strict without git: prefix: only protocol URLs are treated as git (https://, http://, ssh://, git://). Shorthand sources like github.com/org/repo and git@github.com:org/repo now require the git: prefix. (#1426)

Added

  • Added extension event forwarding for message and tool execution lifecycles (message_start, message_update, message_end, tool_execution_start, tool_execution_update, tool_execution_end) (#1375 by @sumeet)
  • Added terminal_input extension event to intercept, consume, or transform raw terminal input before normal TUI handling.
  • Added gpt-5.3-codex-spark model definition for OpenAI and OpenAI Codex providers (research preview).

Changed

  • Routed GitHub Copilot Claude 4.x models through Anthropic Messages API, with updated Copilot header handling for Claude model requests.

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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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