Shardflux is answering right now. Last checked 14 min ago. 2 144 installs a week from npm.
Persistent cloud workspaces for AI agents: run commands, edit files, use git and a browser.
Over the last week it answered 98.9% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.
claude mcp add mcp --transport http https://mcp.shardflux.dev/mcp
{
"mcpServers": {
"mcp": {
"url": "https://mcp.shardflux.dev/mcp"
}
}
}
[mcp_servers.mcp]
url = "https://mcp.shardflux.dev/mcp"
{
"mcpServers": {
"mcp": {
"url": "https://mcp.shardflux.dev/mcp"
}
}
}
{
"mcpServers": {
"mcp": {
"url": "https://mcp.shardflux.dev/mcp"
}
}
}
This one needs environment variables set before it will start:
SHARDFLUX_API_KEY (Scoped Shardflux project API key (sfk_<key id>_<secret>). Its tool permissions decide which workspace tools are listed.), SHARDFLUX_API_URL (API base URL. Plain http:// is allowed only for loopback hosts.), SHARDFLUX_WORKSPACE_KEY (Pin one workspace: workspace_key becomes optional on every tool and any other key is refused (workspace_pinned).), SHARDFLUX_TEMPLATE (Default template slug for workspace_open.), SHARDFLUX_MCP_TOOL_TIMEOUT_MS (Default and maximum deadline per tool call in milliseconds (1000-3600000). A call's timeout_ms can only shorten it.), SHARDFLUX_WAKE (on: workspace tools resume a suspended workspace and then run. off: they return the workspace_not_running refusal.), SHARDFLUX_WAKE_TIMEOUT_MS (Longest wait per tool call for a workspace to wake or finish a transition, in milliseconds (1000-3600000; clamped to SHARDFLUX_MCP_TOOL_TIMEOUT_MS).), SHARDFLUX_AGENT_LABEL (Attribution label of every tool token this server obtains (shown as an agent session).), SHARDFLUX_MCP_LOG_LEVEL (Log level of the JSON log lines on stderr (stdout carries the protocol).), SHARDFLUX_HTTP_KEEPALIVE (Unset: private HTTP/1.1 pooling on Node 26, native fetch elsewhere. 0: force connection closure for diagnosis. 1: select native pooling.), SHARDFLUX_PREWAKE (Offer explicit workspace_hint for tool input streaming (on or off).).
The author declared them in the registry entry; get the values from the project itself.
This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://mcp.shardflux.dev/mcp | streamable-http | sign-in | 671 ms | 14 min ago |
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