Make repo-root chat startup native by letting MCP servers carry a default project source for workspace creation. When a chat host starts from a Git checkout, workspace_create can now omit seed_path and inherit the server startup source; explicit --project-path and clean-clone --repo-url/--repo-ref paths are supported as fallbacks. Add project startup resolution and materialization, surface origin_kind/origin_ref in workspace_seed, update chat-host docs and the repro/fix smoke to use project-aware workspace creation, and switch dist-check to uv run pyro so verification stays stable after uv reinstalls. Validated with uv lock, focused startup/server/CLI pytest coverage, UV_CACHE_DIR=.uv-cache make check, UV_CACHE_DIR=.uv-cache make dist-check, and real guest-backed smokes for both explicit project_path and bare repo-root auto-detection.
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Public Contract
This document describes the chat way to use pyro-mcp in 4.x.
pyro-mcp currently has no users. Expect breaking changes while this chat-host
path is still being shaped.
This document is intentionally biased. It describes the path users are meant to follow today:
- prove the host with the terminal companion commands
- serve disposable workspaces over MCP
- connect Claude Code, Codex, or OpenCode
- use the recipe-backed workflows
This page does not try to document every building block in the repo. It documents the chat-host path the project is actively shaping.
Package Identity
- distribution name:
pyro-mcp - public executable:
pyro - primary product entrypoint:
pyro mcp serve
pyro-mcp is a disposable MCP workspace for chat-based coding agents on Linux
x86_64 KVM hosts.
Supported Product Path
The intended user journey is:
pyro doctorpyro env listpyro env pull debian:12pyro run debian:12 -- git --versionpyro mcp serve- connect Claude Code, Codex, or OpenCode
- run one of the documented recipe-backed workflows
- validate the whole story with
make smoke-use-cases
Evaluator CLI
These terminal commands are the documented companion path for the chat-host product:
pyro doctorpyro env listpyro env pullpyro runpyro demo
What to expect from that path:
pyro run <environment> -- <command>defaults to1 vCPU / 1024 MiBpyro runfails if guest boot or guest exec is unavailable unless--allow-host-compatis setpyro run,pyro env list,pyro env pull,pyro env inspect,pyro env prune, andpyro doctorare human-readable by default and return structured JSON with--json- the first official environment pull downloads from public Docker Hub into the local environment cache
pyro demoproves the one-shot create/start/exec/delete VM lifecycle end to end
These commands exist to validate and debug the chat-host path. They are not the main product destination.
MCP Entry Point
The product entrypoint is:
pyro mcp serve
What to expect:
- bare
pyro mcp servestartsworkspace-core - from a repo root, bare
pyro mcp servealso auto-detects the current Git checkout soworkspace_createcan omitseed_path workspace-coreis the default product path for chat hostspyro mcp serve --profile workspace-fullexplicitly opts into the larger tool surfacepyro mcp serve --profile vm-runexposes the smallest one-shot-only surfacepyro mcp serve --project-path /abs/path/to/repois the fallback when the host does not preserve cwdpyro mcp serve --repo-url ... [--repo-ref ...]starts from a clean clone source instead of a local checkout
Host-specific setup docs:
Chat-Facing Workspace Contract
workspace-core is the normal chat path. It exposes:
vm_runworkspace_createworkspace_listworkspace_updateworkspace_statusworkspace_sync_pushworkspace_execworkspace_logsworkspace_file_listworkspace_file_readworkspace_file_writeworkspace_patch_applyworkspace_diffworkspace_exportworkspace_resetworkspace_delete
That is enough for the normal persistent editing loop:
- create one workspace, often without
seed_pathwhen the server already has a project source - sync or seed repo content
- inspect and edit files without shell quoting
- run commands repeatedly in one sandbox
- diff and export results
- reset and retry
- delete the workspace when the task is done
Move to workspace-full only when the chat truly needs:
- persistent PTY shell sessions
- long-running services and readiness probes
- secrets
- guest networking and published ports
- stopped-workspace disk inspection
Recipe-Backed Workflows
The documented product workflows are:
| Workflow | Recommended profile | Doc |
|---|---|---|
| Cold-start repo validation | workspace-full |
use-cases/cold-start-repo-validation.md |
| Repro plus fix loop | workspace-core |
use-cases/repro-fix-loop.md |
| Parallel isolated workspaces | workspace-core |
use-cases/parallel-workspaces.md |
| Unsafe or untrusted code inspection | workspace-core |
use-cases/untrusted-inspection.md |
| Review and evaluation workflows | workspace-full |
use-cases/review-eval-workflows.md |
Treat this smoke pack as the trustworthy guest-backed verification path for the advertised product:
make smoke-use-cases
The chat-host MCP path above is the thing the docs are intentionally shaping around.