IDE Integration · VS Code + JetBrains extensions shipped

The agent in your editor:
sees what you see, changes what you approve.

The extension runs a local MCP server inside your editor; cc agent in the integrated terminal connects automatically — editor capabilities become agent tools, and agent edits go through the editor's native diff under your judgment.

Install from Open VSX ↗ JetBrains Marketplace ↗ Full docs ↗

Six things, all automatic.

Sense

Selection with every prompt

Each prompt automatically carries your current selection + open tabs (an <ide-context> block) — the model knows what you are looking at, never persisted to the session.

Self-fix

Diagnostics fed back

After the agent edits a file, language-server errors/warnings flow back into the tool result — it sees and fixes its own breakage within the same loop.

Review

Native diff approval

File-edit confirmation upgrades to the editor’s side-by-side diff: edit the right side, Accept replaces execution, hunk-level "Pick hunks…" partial accept, Reject never writes.

Execute

Jupyter kernel

executeCode runs code in the active notebook’s kernel and returns output, variables persist across calls (VS Code).

Chat

Sidebar Chat panel

Talk to the agent without a terminal: streaming replies + tool traces + Plan-mode cards + dangerous-op Approve/Deny cards + session resume + /sessions switcher.

Complete

@ files / slash commands

@-path TAB completion ranks editor-open files first; the panel supports /new /plan /approve /reject /stop.

Two steps to install

1. Install the CLI: npm i -g chainlesschain (≥ 0.162.39; cc ide doctor diagnoses connectivity)
2. Install the extension: VSCodium / Cursor etc. — search ChainlessChain IDE in the extension panel (Open VSX); IDEA / PyCharm / WebStorm — Settings → Plugins → Marketplace, same name (2024.2+). Official VS Code Marketplace listing pending — build a local .vsix from source meanwhile.

Safe defaults: server binds localhost only + per-instance random Bearer token + 0600 lockfile; on the CLI side --no-ide / CC_IDE_CONTEXT=0 / CC_IDE_DIFF_APPROVAL=0 switch each behavior off.

Protocol, troubleshooting, architecture

Discovery protocol (lockfile + env), Streamable HTTP, editor-agnostic design — all in the docs.

Read the IDE bridge docs ↗

The agent in your editor:sees what you see, changes what you approve.