MCP State Sidecar runs on your own machine — the client starts it, so there is no endpoint to ping. 62 installs a week from pypi. Last commit 12 Jun 2026.
MCP State Sidecar: durable state persistence for multi-agent AI workflows
Today is the operative word: we check MCP State Sidecar every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 mcp-state-sidecar -- uvx mcp-state-sidecar
{
"mcpServers": {
"mcp-state-sidecar": {
"args": [
"mcp-state-sidecar"
],
"command": "uvx"
}
}
}
[mcp_servers.mcp-state-sidecar]
command = "uvx"
args = ["mcp-state-sidecar"]
{
"mcpServers": {
"mcp-state-sidecar": {
"args": [
"mcp-state-sidecar"
],
"command": "uvx"
}
}
}
{
"mcpServers": {
"mcp-state-sidecar": {
"args": [
"mcp-state-sidecar"
],
"command": "uvx"
}
}
}
Persistent state for AI agent workflows. Save, resume, and replay multi-step workflows.
Shared versioned state for multi-agent AI workflows
Durable agent-to-agent handoffs and shared scratchpad for multi-agent workflows.
Step-by-step observability for MCP agent workflows
Agent Workflow Engine — multi-step MCP workflows with per-step directives and validation.
Deterministic, persistent graph server for tracking workflow state, decisions, and blockers.
BugBug workflows for AI agents workflows for AI agents
Provable, declarative multi-agent workflows for Claude Code (typed .slang, non-LLM executor).
Answers built from our own checks of this server.