---
title: "MCP tool servers, web tools, and multi-CLI backends"
date: "2026-02-27"
---

## MCP support

Agents can now connect to external tool servers using the Model Context Protocol. Any MCP-compatible server can provide tools to your workflows without custom integration — databases, APIs, internal services, anything with an MCP server.

## Web search and web fetch

Two new built-in tools bring real-time information into workflow decisions. `web_search` queries the Brave Search API, and `web_fetch` retrieves web pages, converting HTML to Markdown and summarizing long content to fit within context limits.

## CLI backends

Individual workflow nodes can now delegate work to external AI coding assistants. Set the backend to `claude-code`, `codex`, or `gemini-cli` and the node will use that CLI tool instead of the built-in agent loop.

```dot
implement [handler=codergen, cli_backend=codex]
review [handler=codergen, cli_backend=claude-code]
```

This means each stage in a workflow can use a different AI tool — use Codex for implementation and Claude Code for review, for example.

## Subagent tools

Agents can spawn sub-agents to handle focused tasks in parallel, each with their own tool set and conversation context. The parent agent delegates work and receives results without its own context window growing.

## More

<Accordion title="Improvements">
- Context compaction now tracks which files were modified and preserves file-level state across compaction boundaries
- Files created in remote sandboxes are automatically synced back to the host
</Accordion>