Mitii AI Agent

Marketplace id: mitii.mitii-ai-agent

Local-first AI coding agent for VS Code. Mitii indexes your repository, answers in Ask mode, plans in Plan mode, applies changes in Agent mode, and can provide FIM inline autocomplete - with approvals, checkpoints, and OpenAI-compatible providers (Ollama, LM Studio, cloud /v1 APIs).

Mitii chat in VS Code

Install

In VS Code: Extensions -> search Mitii AI Agent -> Install
Or open: Marketplace - mitii.mitii-ai-agent
Open a trusted workspace folder
Click the Mitii icon in the activity bar
Wait for indexing to finish (status in the sidebar / Settings -> Index)
In Settings -> Provider, choose:
- echo - local stub (no API key)
- Anthropic (Claude) / Gemini / DeepSeek / OpenAI / OpenRouter
- Custom OpenAI-compatible - any /v1/chat/completions API

For cloud providers, run Mitii: Set Provider API Key (stored in VS Code SecretStorage). Local Ollama/LM Studio usually need no key.

Requires VS Code 1.124+. License: AGPL-3.0-or-later.

What you get

Repository-aware context - SQLite FTS5, symbols, optional vectors, repo map, diagnostics, Git state, and @ attachments
Skills - force-attach playbooks with / or @skill:id in chat (up to 3 per message); workspace skills in .mitii/skills/
Ask / Plan / Agent - read-only Q&A, structured plans, and controlled edits. The composer Review strip lists this chat’s Mitii file changes (expand with Review). Enable Settings → Features → Code Review to add Code Review (N) over the full git working tree, then severity-tagged findings with Fix / Fix all. Free-form “code review” chat is not a structured review run.
FIM autocomplete - optional inline ghost text from a low-latency OpenAI-compatible prompt + suffix endpoint
Safety - configurable approvals, path containment, command policy, pre-write checkpoints, workspace trust
Providers - Echo, Anthropic (Claude), Gemini, and OpenAI-compatible endpoints (DeepSeek, OpenRouter, Azure, Ollama, custom /v1)
MCP - optional stdio servers (mitii.mcp / .mitii/mcp.json); off by default
Evidence - session logs and audit-pack export (secrets redacted). Org SSO / RBAC / SIEM are not included

Quick commands

Command	Purpose
Mitii: Open Chat	Open the sidebar
Mitii: Review Working Tree Changes	Expand the chat review strip. Review = this-chat Mitii edits. With Settings → Features → Code Review on, Code Review (N) runs LLM analysis over all `N` git changes
Mitii: Index Workspace	Rebuild repository index
Mitii: Show Settings	Provider, index, MCP, workspace
Mitii: Toggle Autocomplete	Enable or disable FIM inline suggestions
Mitii: Set Provider API Key	Store cloud API key in SecretStorage
Mitii: Generate Commit Message	SCM commit helper (force-attaches `git-commit-message`)
Mitii: Generate PR Summary	Draft PR body (force-attaches `git-pr-summary`)
Mitii: Generate Changelog	Keep a Changelog draft (force-attaches `release-changelog`)
Mitii: Prepare Release Notes	Release notes via `release-changelog`
Mitii: Export Session Log	Export session JSON
Mitii: Export Audit Pack	Redacted audit bundle
Mitii: Export Shareable Diagnostic	One redacted markdown file for pasting into online chat help

Settings (common)

Setting	Notes
`mitii.provider.type`	`echo`, `openai-compatible`, `anthropic`, or `gemini`
`mitii.provider.baseUrl`	e.g. `http://localhost:11434/v1` for Ollama
`mitii.provider.model`	Model id
`mitii.autocomplete.enabled`	Enable inline FIM suggestions
`mitii.autocomplete.baseUrl`	Empty inherits `mitii.provider.baseUrl`
`mitii.autocomplete.model`	Empty inherits `mitii.provider.model`
`mitii.autocomplete.endpointPath`	FIM/completions path, such as `completions` or `fim/completions`
`mitii.workspace.rootPathOverride`	Only when no folder is open
`mitii.mcp`	MCP server config (disabled by default)
`mitii.ui.showReasoning`	Show streamed reasoning when available
`mitii.ui.modeDefaults.<mode>.thoroughness`	Low / Medium / High run intensity per mode
`mitii.skills.workspace.enabled`	Load workspace skills from `.mitii/skills/` (default on)

All product settings use the mitii.* prefix. Full field reference, save/reflect behavior, and UI map: SETTINGS.md.

Skills in chat

Attach a skill for the next message (bundled or workspace):

Action	How
Pick from list	Click `/` in the composer, or type `@skill:` and use autocomplete
Pin indicator	Selected skills show as chips above the input
Limit	Up to 3 skills per message

Example prompt:

@skill:git-commit-message
Write a commit message for the staged changes.

Writing recipes (auto-attach)

UI / CLI	Skill id	Output
Mitii: Generate Commit Message / `mitii commit-message`	`git-commit-message`	Commit text -> SCM box
Mitii: Generate PR Summary / `mitii pr-summary`	`git-pr-summary`	PR Summary + Test plan
Mitii: Generate Changelog / `mitii changelog`	`release-changelog`	Keep a Changelog section

CLI also accepts mitii ask --recipe commit-message (same for pr-summary, changelog). These entry points gather git status/diff/log and set requiredSkillIds so the skill is guaranteed.

Authoring format and matcher fields: docs/SKILLS_FORMAT.md.

Platform notes

VSIX builds are platform-specific (they include a native SQLite binding):

macOS Apple Silicon (darwin-arm64)
macOS Intel (darwin-x64)
Linux x64 (linux-x64)
Windows x64 (win32-x64)

Install from the Marketplace for your OS, or pick the matching asset from a GitHub release.

Develop from source

This extension lives in the Mitii monorepo under apps/vscode.

git clone https://github.com/Mitii-dev/Mitii.git
cd Mitii
pnpm run setup
# Cursor on macOS: pnpm run setup:cursor

Press F5 for an Extension Development Host. Details: docs/INITIAL_LAUNCH.md.

Runtime stack: extension -> @mitii/host -> @mitii/sdk -> @mitii/v8.

pnpm --filter ./apps/vscode build
pnpm run package   # writes dist-vsix/mitii-ai-agent-<version>-<target>.vsix

Release process: docs/RELEASE.md.

Mitii AI Agent

Mitii

Mitii AI Agent

Install

What you get

Quick commands

Settings (common)

Skills in chat

Writing recipes (auto-attach)

Platform notes

Develop from source

Links