Flip bare pyro mcp serve, create_server(), and Pyro.create_server() to default to workspace-core in 4.0.0 while keeping workspace-full as the explicit advanced opt-in surface. Rewrite the MCP-facing docs and host-specific examples around the bare default command, update package and catalog compatibility to 4.x, and move the public-contract wording from 3.x compatibility guidance to the new stable default. Adjust the server, API, and contract tests so bare server creation now asserts the workspace-core tool set, while explicit workspace-full coverage continues to prove shells, services, snapshots, and disk tools remain available. Validation: uv lock; .venv/bin/pytest --no-cov tests/test_cli.py tests/test_api.py tests/test_server.py tests/test_public_contract.py; UV_CACHE_DIR=.uv-cache make check; UV_CACHE_DIR=.uv-cache make dist-check; real guest-backed smoke for bare Pyro.create_server() plus explicit profile="workspace-full".
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MCP Client Config Example
Default for most chat hosts in 4.x: workspace-core.
Use the host-specific examples first when they apply:
- Claude Code: examples/claude_code_mcp.md
- Codex: examples/codex_mcp.md
- OpenCode: examples/opencode_mcp_config.json
Use this generic config only when the host expects a plain mcpServers JSON
shape.
pyro-mcp is intended to be exposed to LLM clients through the public pyro CLI.
Generic stdio MCP configuration using uvx:
{
"mcpServers": {
"pyro": {
"command": "uvx",
"args": ["--from", "pyro-mcp", "pyro", "mcp", "serve"]
}
}
}
If pyro-mcp is already installed locally, the same server can be configured with:
{
"mcpServers": {
"pyro": {
"command": "pyro",
"args": ["mcp", "serve"]
}
}
}
Profile progression:
workspace-core: the default and recommended first persistent chat profilevm-run: expose onlyvm_runworkspace-full: explicit advanced opt-in for shells, services, snapshots, secrets, network policy, and disk tools
Primary profile for most agents:
workspace-core
Use lifecycle tools only when the agent needs persistent VM state across multiple tool calls.
Other generic-client examples:
- Claude Desktop: examples/claude_desktop_mcp_config.json
- Cursor: examples/cursor_mcp_config.json