VS Code Extension · Free beta

Your AI pair-programmer that never leaves the editor.

Agentic chat with 30+ tools, inline edits, tab completions and a memory system that learns how you work. No API keys. No model picking. Just code.

30+
built-in tools
< 200ms
tab completion
0
API keys needed
App.tsx — klaatai
export function App() {
// route every request through Klaatu
const reply = await route(msg)
}
Klaatu
Refactor App to use lazy loading
editing App.tsx…
KlaatucodeLn 3, Col 22

Get started in seconds

Install. Sign in. Start coding.

01

Install

One click from the VS Code Marketplace. Works in VS Code, Cursor, and any compatible editor.

02

Sign in

Opens your browser — no API keys, no configuration. OAuth takes five seconds.

03

Ship

Open any project and start chatting. The code graph indexes in the background automatically.

Capabilities

Everything you'd want from an AI co-pilot — and more.

Six integrated systems working together so you never context-switch out of the editor.

30+ tools

Agentic chat

Describe what you want — the agent reads files, writes code, runs tests and searches your codebase. Multi-step tasks run autonomously with approval at every destructive step.

9-pass precision

Inline edit — ⌘K

Select code, describe the change, review the diff inline. A 9-pass fuzzy engine ensures precise patches. One Ctrl+Z reverts everything.

Cross-file aware

Tab completions

Multi-line ghost-text suggestions that understand your imports, types and APIs — not just the open buffer. Latency under 200ms.

Persistent

Memory — learns you

Remembers your stack, conventions and style across sessions. Salience ranking surfaces what matters and quietly forgets what doesn't.

Tree-sitter powered

Code graph

Indexes your repo into a knowledge graph — symbols, call chains, relationships. Ask "where do we validate tokens?" and get file:line in milliseconds.

Zero-effort fixes

Auto-debug

Watches LSP diagnostics on every file the AI touches. When it introduces an error, it catches and fixes it — automatically.

Four modes

The right mindset for every task.

Switch between full agent autonomy and read-only exploration — whatever the task demands.

Code

Full tools — reads, writes, edits, runs tests

Plan

Read-only planning before implementation

Debug

Investigate bugs, run tests, inspect logs

Ask

Read-only Q&A across your entire repo

Context enrichment

Point the AI at exactly what matters.

Use @-mentions to pull in files, folders, diffs, web results or your entire codebase — precise context without copying anything.

@fileAttach files from a picker
@folderInclude a folder's file tree
@webSearch the web and include results
@diff / @gitInclude current working changes
@codebaseSearch the code graph for symbols
@problemsInclude current LSP diagnostics

Built-in tools

30+ tools. Zero configuration.

File ops, search, shell execution, web access, LSP integration and workflow automation — all wired in out of the box.

File ops
read, write, edit, apply_patch, glob
Search
grep, graph_query, semantic_search, outline
Shell
bash, terminal, integrated terminals
Web
webfetch, websearch, browser automation
Dev
lsp, go-to-def, references, pr_review, preview
Workflow
todowrite, task (subagents), impact_check

Keyboard-first

Every action, one shortcut away.

Chat, edit, explain, review — all without lifting your hands from the keyboard.

Open chat sidebar⌘/Ctrl+Shift+K
Inline edit selection⌘/Ctrl+K
Send selection to chat⌘/Ctrl+L
Explain selected code⌘/Ctrl+Shift+E
Drop files into chatDrag & Drop
Paste screenshots to chatPaste

Stop managing models. Start shipping code.

Free during beta. 30 requests per day. No credit card. Works in VS Code and Cursor.