Breaking changes and migration

This page documents breaking changes in Kimi Code CLI releases and provides migration guidance.

Unreleased

1.51.0

The kimi-code package on PyPI no longer installs Kimi CLI

The kimi-code package on PyPI used to be an alias of Kimi CLI. It is now a stub that only prints instructions for installing the new Kimi Code CLI and exits with status 1. Kimi CLI itself is archived and no longer maintained.

• Affected: Users who installed Kimi CLI through the kimi-code package on PyPI (for example uv tool install kimi-code)
• Migration: Install Kimi Code CLI with curl -fsSL https://code.kimi.com/kimi-code/install.sh | bash (Windows: irm https://code.kimi.com/kimi-code/install.ps1 | iex), then run kimi migrate to migrate your config and sessions. See the migration guide

1.49.0

Kimi no longer sends legacy reasoning_effort automatically

Kimi thinking configuration now uses thinking.type exclusively. Kimi.with_thinking(...) no longer adds the legacy reasoning_effort parameter to requests.

• Affected: Applications using Kosong's Kimi provider with older Kimi-compatible endpoints that require reasoning_effort
• Migration: Update the endpoint to support thinking.type. If an older endpoint still requires the legacy parameter, pass it explicitly with with_generation_kwargs(reasoning_effort="...")

1.43.0

MCP OAuth token cache moved to ~/.kimi/mcp-oauth/

Kimi Code CLI now uses FastMCP 3's persistent OAuth storage API for MCP servers and stores MCP OAuth tokens under ~/.kimi/mcp-oauth/. Tokens from the old FastMCP 2.x cache location are not migrated automatically.

• Affected: Users who authorized OAuth MCP servers before upgrading
• Migration: If kimi mcp list shows an OAuth server as requiring authorization, run kimi mcp auth <name> once to create a new token in ~/.kimi/mcp-oauth/. Use kimi mcp reset-auth <name> before re-authorizing if the stored token becomes invalid or corrupted

1.42.0

Windows shell backend changed from PowerShell to Git Bash

The Shell tool on Windows now runs commands through bash.exe (POSIX semantics) instead of powershell.exe. Windows users gain the same Unix-style command syntax as Linux/macOS, but must have Git for Windows installed.

• Affected: All Windows users; integrations, agent specs, or saved snippets that rely on PowerShell-specific syntax (Get-ChildItem, Where-Object, cmdlet -Foo Bar argument style, ;-only command chaining, NUL redirects, etc.) reaching the Shell tool
• Migration:
  1. Install Git for Windows if not already installed; the bundled bash.exe (typically C:\Program Files\Git\bin\bash.exe) is auto-discovered via where.exe git or the standard install location
  2. If bash.exe lives in a non-standard location, set the KIMI_CLI_GIT_BASH_PATH environment variable to its absolute path before launching kimi-cli
  3. Update any custom prompts, agent specs, or snippets that hard-code PowerShell syntax to use Unix shell syntax instead (forward slashes inside Shell commands, /dev/null instead of NUL, && and || for control flow, grep/sed/awk instead of PowerShell cmdlets)
  4. Note that python.exe, node.exe, and other native Windows binaries called from inside bash still need native Windows paths (e.g. python C:\path\to\script.py); only POSIX-aware tools (cat, ls, grep, etc.) understand the /c/path/... form
  5. If kimi-cli cannot find bash.exe, it now exits with an install hint at startup instead of falling back to PowerShell

1.40.0

--print now uses runtime AFK semantics instead of YOLO semantics

Print mode still runs non-interactively and handles approvals automatically, but it now sets an invocation-only AFK overlay instead of enabling YOLO. This means --print treats the user as unavailable and auto-dismisses AskUserQuestion, while later interactive resumes do not inherit AFK solely because of a previous print run.

• Affected: Scripts, wrappers, or custom integrations that inferred print-mode behavior from the explicit YOLO flag
• Migration: Treat --print / --quiet as non-interactive AFK runs. Use --yolo only when you want to bypass permission approvals while a user remains reachable

skip_yolo_prompt_injection replaced by skip_afk_prompt_injection

YOLO no longer injects model guidance, so the old skip_yolo_prompt_injection config key is ignored. The remaining non-interactive reminder belongs to AFK mode and can be disabled with skip_afk_prompt_injection.

• Affected: Config files or embedded applications that set skip_yolo_prompt_injection
• Migration: Replace skip_yolo_prompt_injection = true with skip_afk_prompt_injection = true if you need to suppress AFK mode reminders

1.39.0

merge_all_available_skills default flipped to true

The merge_all_available_skills config option default has changed from false to true. kimi-cli now merges all existing user- and project-level brand skill directories (.kimi/skills, .claude/skills, .codex/skills) by default instead of only using the first one found. Users who keep skills in multiple brand directories — for example both ~/.kimi/skills and ~/.claude/skills — will see every skill out of the box after upgrading.

• Affected: Users who maintain multiple brand skill directories and relied on the first-match behavior to hide duplicates
• Migration: Set merge_all_available_skills = false in your config to restore the previous first-match behavior

1.25.0

Wire protocol 1.6 — subagent and approval field changes

The SubagentEvent field task_tool_call_id has been renamed to parent_tool_call_id, and new optional fields (agent_id, subagent_type) have been added. ApprovalRequest gains source_kind, source_id, agent_id, subagent_type, and source_description fields. ApprovalResponse gains a feedback field.

• Affected: Wire mode clients that parse SubagentEvent or ApprovalRequest/ApprovalResponse payloads
• Migration: Rename task_tool_call_id to parent_tool_call_id in your event handlers; handle the new optional fields as needed

CreateSubagent and Task (multiagent) tools removed

The CreateSubagent and Task tools under kimi_cli.tools.multiagent have been removed. Use the new Agent tool instead.

• Affected: Custom agent configurations referencing kimi_cli.tools.multiagent:Task or kimi_cli.tools.multiagent:CreateSubagent
• Migration: Replace with kimi_cli.tools.agent:Agent in your agent YAML allowed_tools

TaskOutput block parameter default changed

The block parameter of the TaskOutput tool now defaults to false (previously true). TaskOutput returns a non-blocking status/output snapshot by default.

• Affected: Custom agents or Wire mode clients relying on TaskOutput blocking by default
• Migration: Explicitly pass block=true if you need to wait for task completion

0.81 - Prompt Flow replaced by Flow Skills

--prompt-flow option removed

The --prompt-flow CLI option has been removed. Use flow skills instead.

• Affected: Scripts and automation using --prompt-flow to load Mermaid/D2 flowcharts
• Migration: Create a flow skill with embedded Agent Flow in SKILL.md and invoke via /flow:<skill-name>

/begin command replaced

The /begin slash command has been replaced with /flow:<skill-name> commands.

• Affected: Users who used /begin to start a loaded Prompt Flow
• Migration: Use /flow:<skill-name> to invoke flow skills directly

0.77 - Thinking mode and CLI option changes

Thinking mode setting migration change

After upgrading from 0.76, the thinking mode setting is no longer automatically preserved. The previous thinking state stored in ~/.kimi/kimi.json is no longer used; instead, thinking mode is now managed via the default_thinking configuration option in ~/.kimi/config.toml, but values are not automatically migrated from legacy metadata.

• Affected: Users who previously had thinking mode enabled
• Migration: Reconfigure thinking mode after upgrading:

  • Use the /model command to select model and set thinking mode (interactive)

  • Or manually add to ~/.kimi/config.toml:

    default_thinking = true  # Set to true if you want thinking mode enabled by default

--query option removed

The --query (-q) option has been removed. Use --prompt as the primary option, with --command as an alias.

• Affected: Scripts and automation using --query or -q
• Migration:
  • --query / -q → --prompt / -p
  • Or continue using --command / -c

0.74 - ACP command change

--acp option deprecated

The --acp option has been deprecated. Use the kimi acp subcommand instead.

• Affected: Scripts and IDE configurations using kimi --acp
• Migration: kimi --acp → kimi acp

0.66 - Config file and provider type

Config file format migration

The config file format has been migrated from JSON to TOML.

• Affected: Users with ~/.kimi/config.json
• Migration: Kimi Code CLI will automatically read the old JSON config, but manual migration to TOML is recommended
• New location: ~/.kimi/config.toml

JSON config example:

{
  "default_model": "kimi-k2-0711",
  "providers": {
    "kimi": {
      "type": "kimi",
      "base_url": "https://api.kimi.com/coding/v1",
      "api_key": "your-key"
    }
  }
}

Equivalent TOML config:

default_model = "kimi-k2-0711"

[providers.kimi]
type = "kimi"
base_url = "https://api.kimi.com/coding/v1"
api_key = "your-key"

google_genai provider type renamed

The provider type for Gemini Developer API has been renamed from google_genai to gemini.

• Affected: Users with type = "google_genai" in their config
• Migration: Change the type value to "gemini"
• Compatibility: google_genai still works but updating is recommended

0.57 - Tool changes

Shell tool

The Bash tool (or CMD on Windows) has been unified and renamed to Shell.

• Affected: Agent files referencing Bash or CMD tools
• Migration: Change tool references to Shell

Task tool moved to multiagent module

The Task tool has been moved from kimi_cli.tools.task to kimi_cli.tools.multiagent.

• Affected: Custom tools importing the Task tool
• Migration: Change import path to from kimi_cli.tools.multiagent import Task

PatchFile tool removed

The PatchFile tool has been removed.

• Affected: Agent configs using the PatchFile tool
• Alternative: Use StrReplaceFile tool for file modifications

0.52 - CLI option changes

--ui option removed

The --ui option has been removed in favor of separate flags.

• Affected: Scripts using --ui print, --ui acp, or --ui wire
• Migration:
  • --ui print → --print
  • --ui acp → kimi acp
  • --ui wire → --wire

0.42 - Keyboard shortcut changes

Mode switch shortcut

The agent/shell mode toggle shortcut has changed from Ctrl-K to Ctrl-X.

• Affected: Users accustomed to using Ctrl-K for mode switching
• Migration: Use Ctrl-X to toggle modes

0.27 - CLI option rename

--agent option renamed

The --agent option has been renamed to --agent-file.

• Affected: Scripts using --agent to specify custom agent files
• Migration: Change --agent to --agent-file
• Note: --agent is now used to specify built-in agents (e.g., default, okabe)

0.25 - Package name change

Package renamed from ensoul to kimi-cli

• Affected: Code or scripts using the ensoul package name
• Migration:
  • Installation: pip install ensoul → pip install kimi-cli or uv tool install kimi-cli
  • Command: ensoul → kimi

ENSOUL_* parameter prefix changed

The system prompt built-in parameter prefix has changed from ENSOUL_* to KIMI_*.

• Affected: Custom agent files using ENSOUL_* parameters
• Migration: Change parameter prefix to KIMI_* (e.g., ENSOUL_NOW → KIMI_NOW)