YAML Workflow runs on your own machine — the client starts it, so there is no endpoint to ping. 421 installs a week from pypi. Last commit 24 Aug 2026.
Expose declarative YAML-defined workflows as MCP tools over stdio
What the code does
We read the source, 13 h ago · rules 3dff92dd89df
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
self.workflow = yaml.load(f, Loader=get_safe_loader())
search_pattern = os.path.join(search_path_base, pattern)
result = subprocess.run(
exec(code, {}, exec_context)
"env": dict(os.environ),
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add yaml-workflow -- uvx yaml-workflow{
"mcpServers": {
"yaml-workflow": {
"args": [
"yaml-workflow"
],
"command": "uvx"
}
}
}[mcp_servers.yaml-workflow]
command = "uvx"
args = ["yaml-workflow"]{
"mcpServers": {
"yaml-workflow": {
"args": [
"yaml-workflow"
],
"command": "uvx"
}
}
}{
"mcpServers": {
"yaml-workflow": {
"args": [
"yaml-workflow"
],
"command": "uvx"
}
}
}Alternatives to YAML Workflow
same job, measured the same wayRails development skills, docs, and workflows exposed through MCP stdio.
A MCP server that gives AI agents access to SignNow eSignature workflows over STDIO.
Raycast workflow automation MCP server with 9 tools
Provable, declarative multi-agent workflows for Claude Code (typed .slang, non-LLM executor).
Invoke deployed LLMGraph no-code LLM workflows (chat, RAG, automations) as MCP tools.
Your saved nanoodle workflow graphs as MCP tools — BYOK or pay per call in Nano (x402)
MCP server exposing JetBrains TeamCity CI/CD workflows to AI coding assistants
Give any MCP-compatible AI assistant a builder for live, hosted web tools and workflows.
YAML Workflow — questions
Answers built from our own checks of this server.