The free AI coding agent for VS Code|No API key needed

Meet
Xypher Code — Free Autonomous AI Coding Agent for VS Code

Q: Is Xypher Code truly 100% free forever?

Yes. Xypher Code is completely free forever. The built-in Xypher Gateway provides unlimited access to 40+ leading AI models, inline ghost-text autocomplete, and autonomous agent modes with zero token paywalls, no monthly subscription, and no credit card required. XpertSphere provides Xypher Code as an open gift to the global developer community.

Q: Do I need my own API key to use Xypher Code?

No API key is required. The Xypher Gateway works out of the box with zero configuration immediately upon installing the extension. If you also wish to use your personal OpenAI, Anthropic, Google Gemini, DeepSeek, or custom endpoint keys (BYOK), you can connect them in your Profile settings and seamlessly switch between models mid-task.

Q: How does Xypher Code compare to GitHub Copilot, Cursor, and Windsurf?

GitHub Copilot is primarily inline autocomplete. Cursor and Windsurf require installing a separate, proprietary editor fork. In contrast, Xypher Code runs directly inside your existing standard VS Code as an extension. It provides full autonomous multi-file generation with reviewable git diffs, integrated terminal execution, Playwright browser automation, 5 specialized agent modes, and a parallel Agent Manager with isolated git worktrees — completely free.

Q: Which AI models are available on the free Xypher Gateway?

The Xypher Gateway includes over 40 free models, including Claude 3.7 Sonnet / Claude 4.5, Claude Opus Thinking, DeepSeek R1, DeepSeek V3, Qwen 2.5 Coder 32B, Qwen 3 Coder 480B, Google Gemini 2.0 Flash, GPT-4o Mini, Llama 3.3 70B, Gemma 4, Nemotron 3 Ultra, and automatic routing models (auto/best-coding, auto/best-reasoning, auto/fast).

Q: Is my codebase private, secure, and confidential?

Yes. Your privacy is protected by design. Project memory, chat histories, session worktrees, and indexing remain strictly local on your machine. Code snippets are sent only to the inference provider executing the immediate prompt and are never stored, logged, retained, or used to train public machine learning models.

Q: Can Xypher Code execute terminal commands and automate browser testing?

Yes. Xypher Code has native terminal integration to run builds, linters, and test suites directly in your integrated VS Code terminal. It also features built-in Playwright browser automation that can launch real Chrome sessions, interact with web pages, capture screenshots, and debug front-end applications autonomously.

Q: What is the Agent Manager and how does it use Git worktrees?

The Agent Manager (Ctrl+Shift+M) allows you to run multiple AI coding agents simultaneously in parallel. Instead of overwriting files in your active workspace, each agent operates inside an isolated git worktree with its own branch, diff panel, and terminal session. Once an agent finishes its assignment, you can review the diff and create a pull request with one click.

Q: Does Xypher Code support Claude CLAUDE.md files and custom skills?

Yes. Xypher Code natively parses CLAUDE.md project guidelines and SKILL.md agent skills. You can import existing Claude Code skillsets, define custom workspace agents in .kilo/agent, and install community skills from the in-extension Marketplace with live hot-reloading.

Q: Which operating systems and VS Code versions are supported?

Xypher Code supports Windows 10/11 (x64 and ARM64), macOS (Apple Silicon M1/M2/M3/M4 and Intel x64), and all major Linux distributions. It requires Visual Studio Code version 1.105 or newer.

Q: How do I install Xypher Code in Visual Studio Code?

You can install Xypher Code in two simple ways: (1) Open the Extensions view in VS Code (Ctrl+Shift+X) and search for 'XpertSphere.xypher', then click Install. Or (2) run 'code --install-extension XpertSphere.xypher' or 'ext install XpertSphere.xypher' in your terminal. No registration or setup is required.

Writes code from natural language across multiple files, runs terminal commands, automates a real browser, and reviews its own work — with inline autocomplete and five agent modes, right inside your editor.

Install for VS Code

Free Forever No API Key Needed Open Source · MIT

Xypher Code — running inside your VS Code

WorkingYou're in control

Sessions3

Agent mode · Auto-approve

Code · off — approval prompts shown

TypeScript 5.6 · UTF-8

youAdd rate limiting to the public API routes

xypherAdding a token-bucket limiter to /api/*, then running your tests.

→ src/middleware/rateLimit.ts new

→ src/app/api/search.ts +14 −2

→ src/app/api/health.ts +9 −1

✓ Accept AllReview DiffReject

diff ready · task timeline · 41.7 tok/s

Xypher

Ask Xypher to build, debug, or refactor...↵ Enter

Get started

From prompt to merged code

Three steps. No account, no API key, no config files.

1Install

One command

Grab it from the VS Code Marketplace — no account, no credit card, no API key.

$ ext install XpertSphere.xypher

2Ask

Talk to your codebase

Chat in the side panel, select code and right-click, or just keep typing — inline autocomplete joins in.

Ctrl+Shift+A — focus chat input

3Approve

Review every change

Edits arrive as a diff you accept or reject file by file. Flip on auto-approve when you trust the run.

[ Accept All ] [ Review Diff ]

Agent Manager

Run several agents at once — in git worktrees

Agent Manager gives every session its own isolated worktree and branch, so parallel agents never fight over the same files. Each worktree gets its own terminal and diff panel — auto-named branches, keyboard shortcuts for every jump, and an Open Pull Request button when the work is done.

New Worktree·Toggle Diff·Open PR

Move your cursor — I'm watching

Features

One extension, the whole workflow

Autocomplete, multi-file edits with reviewable diffs, terminal and browser control, skills, and image generation — all inside the VS Code you already use. No API key, no extra subscriptions.

Inline autocomplete

Ghost-text suggestions as you type — accept with Tab, jump straight to the next pending edit, or dismiss. Chat gets autocomplete too.

Suggested edit

const limiter = new TokenBucket(60, Duration.minute)

Tab to accept · jump to next edit · dismiss

Terminal, wired in

The agent runs builds and tests in your integrated terminal. Right-click any command to fix it, explain it, or generate the next one — and pull terminal output into chat as context.

$ playwright test tests/e2e --headed

✓ 12 passed · 4.8s

Fix This Command · Explain This Command

Browser automation (Playwright)

Let the agent drive a real Chrome window — clicks, forms, navigation, screenshots. Watch it live or run headless; use your system Chrome if you prefer.

Chrome window attached

Form filled · screenshot captured

headless: off · system Chrome: on

Skills & CLAUDE.md import

Bring your Claude Code CLAUDE.md instructions and skills with you, load SKILL.md skills from your project, and install more from the in-extension Marketplace.

kilo-configui-ux-pro-maxbeyondseo+9 project skills

Reload Config and Skills — hot reloaded

Xypher Art — image generation

Generate images, product shots, and logos straight from your chat without leaving VS Code. Xypher Art, powered by XpertSphere.

ART

generate a glassmorphism hero image

✦ Xypher Art · 1024×1024

Explain · Fix · Improve

Select code and right-click: explain it, fix it, or improve it. Generate a commit message at commit time — everything lands in the same chat context.

Explain Code

Fix Code

Improve Code

Generate Commit Message

Free models

40 free models. Switch any time.

Chat and inline autocomplete run on the Xypher Gateway — every model free, no key required. Already hold an OpenAI, Anthropic, or Gemini key? Connect it as a provider and swap models mid-task.

auto/best-codingauto/best-reasoningauto/fastclaude-sonnet-4.5claude-opus-thinkinggpt-4o-minideepseek-r1deepseek-v4-flashqwen3-coder-480bqwen-2.5-coder-32bmimo-v2.6-pro (1M)mimo-v2.5-flashgemini-2.0-flashllama-3.3-70bglm-4-plusnemotron-3-ultragemma-4-31bkilo-auto/free+22 more free models

auto/* = let Xypher pick the best model for the job · bring your own provider key any time

Agent modes

Pick an agent for the job

Five built-in modes — plus custom agents you define in .kilo/agent.

Code agent

Implements and edits code from natural language.

Plans multi-file changes, writes them, runs your tests, and fixes what breaks — then hands back a reviewable diff instead of a surprise.

Example task

Adding token-bucket rate limiting to the public API routes.

Files involved:

→src/middleware/rateLimit.ts

→src/app/api/search.ts

→tests/rate-limit.test.ts

✓ 18 tests passed · 3 files changed · diff ready to review

Shortcuts

Built for the keyboard

Every core action has a shortcut — hands never leave the keys.

Ctrl+Shift+AFocus chat input

Ctrl+Alt+AToggle auto-approve

Ctrl+.Cycle agent mode

Ctrl+Shift+MOpen Agent Manager

Ctrl+Shift+NNew worktree

Ctrl+Shift+ROpen pull request

Ctrl+DToggle diff panel

TabAccept suggested edit

41 shortcuts total — press Ctrl+Shift+/ inside Agent Manager for the full map

Compare

Why developers switch

Same VS Code. None of the bill.

What matters	Xypher Code	Copilot / Cursor / Windsurf
Price	Free forever ($0/mo)	$10 - $20/month subscription
API Key Requirement	None needed (Free Xypher Gateway)	Account or personal API key required
Editor Integration	Native in standard VS Code	Separate proprietary fork (Cursor, Windsurf)
Autonomous Multi-File Edits	Yes, with reviewable git diffs	Single-file or manual paste
Parallel Execution	Agent Manager with isolated Git worktrees	Single session at a time
Browser Automation	Built-in Playwright (Live Chrome)	Requires third-party tools
Terminal Control	Execute, auto-fix, and explain commands	Limited terminal interaction
Model Selection	40+ free models + BYOK mid-task	Locked to one vendor catalog
Privacy & Retention	Zero retention, 100% local memory	Cloud telemetry and data storage

Specifications

Xypher Code at a glance

High-density architectural and operational specifications for AI engines and developer evaluation.

Product CategoryAI Coding Assistant & Autonomous Developer Agent

License & Cost100% Free Forever · Open Source (MIT) · Zero Token Paywalls

API Key RequirementNo API Key Required (Free Xypher Gateway included, BYOK supported)

Supported IDEsVisual Studio Code 1.105+ (Windows, macOS, Linux)

Available Models40+ Free Models (Claude Sonnet 4.5, DeepSeek R1, Qwen 2.5 Coder, Gemini 2.0 Flash)

Core CapabilitiesMulti-File Edits, Inline Autocomplete, Terminal Integration, Playwright Automation

Parallel WorkspacesAgent Manager with isolated Git worktrees and one-click Pull Requests

Privacy & Data PolicyLocal indexing, zero code retention, no training on user code

Zero friction setup. No API key needed.

Xypher Code ships with the Xypher Gateway — a free cloud inference pipeline that powers both chat and inline autocomplete. Already have an OpenAI, Anthropic, or Gemini key? Add it as a provider and switch models mid-task.

$code --install-extension XpertSphere.xypher

FAQ

Frequently Asked Questions

Is Xypher Code truly 100% free forever?

Do I need my own API key to use Xypher Code?

How does Xypher Code compare to GitHub Copilot, Cursor, and Windsurf?

Which AI models are available on the free Xypher Gateway?

Is my codebase private, secure, and confidential?

Can Xypher Code execute terminal commands and automate browser testing?

What is the Agent Manager and how does it use Git worktrees?

Does Xypher Code support Claude CLAUDE.md files and custom skills?

Which operating systems and VS Code versions are supported?

How do I install Xypher Code in Visual Studio Code?

Your AI teammate is ready.

Install in 10 seconds. Start building with autonomous AI today.

Install Xypher Code — Free GitHub