Nex Code
Write, navigate and debug code with files, terminal, diagnostics, search, symbols and local or remote workspaces.
VSCodium-based / MCP-native / local-first
Turn your workspace into a replayable agent runtime.
Nex connects editor, terminal, MCP tools, secure tunnels and local or remote workspaces in one controlled desktop environment where every agent action can be inspected, replayed or rolled back.
Explicit tools
Inspectable JSON
Replay / rollback
MCP / http://localhost:3027/mcp
read_file_codeSTARTED - COMPLETEDcore / 3ms
{ "result": "package.json" }function ReadVersionFromPackage() {
const product = readJson('product.json')
return product.version
}Not an AI plugin
An agentic workspace runtime.
Nex does not give agents unrestricted access. It turns your real workspace into an operating surface with explicit capabilities: files, shell, diagnostics, symbols, tool chains, remote sessions and secure provider endpoints.
Two modes. One workspace.
Nex Code for editing. Nex Flow for execution.
Move between a familiar VSCodium-based editor and a visual layer for tools, sessions, MCP calls, automation blocks and execution state.
Nex Flow
Inspect tools, runs, inputs, outputs, lifecycle events, sessions and replayable execution chains.
Replayable execution
Agent workflows should behave like code: inspectable, replayable, reversible.
Every tool call becomes a structured run. Select a step, inspect JSON input and output, change the input, replay the chain from that point or rollback to the previous state.
Replay from hereContinue a workflow from any selected node.
Rollback lastUndo a tool step without manually cleaning scattered changes.
Inspectable stateArguments, result, lifecycle, duration and errors stay attached to the run.
Controlled capabilities
Give agents tools, not unrestricted access.
Choose exactly which capabilities stay enabled: read files, edit files, execute shell commands, inspect diagnostics, search symbols and chain tools.
read_file_code
replace_lines_code
execute_shell_command_code
get_diagnostics_code
search_symbols_code
call_tool_chain
MCP + Anhub Provider
Connect ChatGPT and other MCP clients to your workspace.
Start a local MCP endpoint, publish it through Anhub Provider and use a secure tunnel when needed. Your runtime stays local; agents connect through explicit provider URLs and enabled tools.
Local MCP endpointExpose development tools from your machine.
Provider URLShare a controlled endpoint with compatible clients.
Tunnel diagnosticsSee runtime, provider and tunnel status directly in Nex.
Built for real projects
One operating surface for local and remote development.
System Session
A runtime layer that connects workspace, terminal, file tools, diagnostics, symbol search and MCP exposure.
Remote workspaces
Work on local folders or SSH-backed targets through the same session and tool model.
Secure tunnels
Publish a temporary endpoint for external agents while keeping the runtime controlled by the desktop user.
Dynamic tools
Add workspace-local MCP powerups and project-specific scripts that agents can call explicitly.
Architecture
Close to VSCodium. Extended by Nex.
Nex stays near upstream VSCodium, adding a focused patch-set and a first-party System Session extension for Flow, MCP and remote capabilities.
Nex Desktop
Nex Code
editor / terminal / diagnostics
editor / terminal / diagnostics
Nex Flow
graph / inspector / replay
graph / inspector / replay
System Session
files / shell / symbols / remote
files / shell / symbols / remote
MCP Server
explicit agent tools
explicit agent tools
Anhub Provider
secure endpoint / tunnels
secure endpoint / tunnels
Local-first agentic development
Build with agents without giving up control of your workspace.
Download Nex, open a project, start a System Session and connect your first MCP client through explicit tools.