Shardflux

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-10-08T05:33:02.479651Z",
      "publishedAt": "2026-10-08T05:33:02.479651Z",
      "statusChangedAt": "2026-10-08T05:33:02.479651Z"
    }
  },
  "server": {
    "name": "dev.shardflux/mcp",
    "title": "Shardflux",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://mcp.shardflux.dev/mcp",
        "type": "streamable-http"
      }
    ],
    "version": "0.12.2",
    "packages": [
      {
        "version": "0.12.2",
        "transport": {
          "type": "stdio"
        },
        "identifier": "@shardflux/mcp",
        "runtimeHint": "npx",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "SHARDFLUX_API_KEY",
            "format": "string",
            "isSecret": true,
            "isRequired": true,
            "description": "Scoped Shardflux project API key (sfk_<key id>_<secret>). Its tool permissions decide which workspace tools are listed.",
            "placeholder": "sfk_..."
          },
          {
            "name": "SHARDFLUX_API_URL",
            "format": "string",
            "default": "https://api.shardflux.dev",
            "description": "API base URL. Plain http:// is allowed only for loopback hosts."
          },
          {
            "name": "SHARDFLUX_WORKSPACE_KEY",
            "format": "string",
            "description": "Pin one workspace: workspace_key becomes optional on every tool and any other key is refused (workspace_pinned).",
            "placeholder": "me/scratch"
          },
          {
            "name": "SHARDFLUX_TEMPLATE",
            "format": "string",
            "description": "Default template slug for workspace_open.",
            "placeholder": "python-node-browser"
          },
          {
            "name": "SHARDFLUX_MCP_TOOL_TIMEOUT_MS",
            "format": "number",
            "default": "120000",
            "description": "Default and maximum deadline per tool call in milliseconds (1000-3600000). A call's timeout_ms can only shorten it."
          },
          {
            "name": "SHARDFLUX_WAKE",
            "format": "string",
            "choices": [
              "on",
              "off"
            ],
            "default": "on",
            "description": "on: workspace tools resume a suspended workspace and then run. off: they return the workspace_not_running refusal."
          },
          {
            "name": "SHARDFLUX_WAKE_TIMEOUT_MS",
            "format": "number",
            "default": "120000",
            "description": "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)."
          },
          {
            "name": "SHARDFLUX_AGENT_LABEL",
            "format": "string",
            "default": "mcp",
            "description": "Attribution label of every tool token this server obtains (shown as an agent session)."
          },
          {
            "name": "SHARDFLUX_MCP_LOG_LEVEL",
            "format": "string",
            "choices": [
              "debug",
              "info",
              "warn",
              "error"
            ],
            "default": "info",
            "description": "Log level of the JSON log lines on stderr (stdout carries the protocol)."
          },
          {
            "name": "SHARDFLUX_HTTP_KEEPALIVE",
            "format": "string",
            "choices": [
              "0",
              "1"
            ],
            "description": "Unset: private HTTP/1.1 pooling on Node 26, native fetch elsewhere. 0: force connection closure for diagnosis. 1: select native pooling."
          },
          {
            "name": "SHARDFLUX_PREWAKE",
            "format": "string",
            "default": "off",
            "description": "Offer explicit workspace_hint for tool input streaming (on or off)."
          }
        ]
      }
    ],
    "websiteUrl": "https://docs.shardflux.dev/reference/mcp",
    "description": "Persistent cloud workspaces for AI agents: run commands, edit files, use git and a browser."
  }
}