Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "name": "WebSocket Session Manager API",
  "description": "Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema divergence detection in agentic workflows.",
  "url": "https://npm-package-ws-has-241560546-w-production.up.railway.app",
  "version": "1.0.0",
  "documentationUrl": "https://npm-package-ws-has-241560546-w-production.up.railway.app/docs",
  "provider": {
    "organization": "nexus-mcp-infra",
    "url": "https://github.com/nexus-mcp-infra/npm-package-ws-has-241560546-weekly-downloads-but-sdk"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "additionalInterfaces": [
    {
      "url": "https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp",
      "transport": "MCP"
    }
  ],
  "skills": [
    {
      "id": "nexus_npm_package_ws_has_241560546_weekly_down_open_websocket_session",
      "name": "Open WebSocket Session",
      "description": "Establishes a persistent WebSocket connection to a target URL and registers it in the stateful session registry. Returns a session_id for all subsequent operations. Do NOT use to reconnect an already-open session -- call close_websocket_session first.",
      "tags": [
        "websocket",
        "session-management"
      ]
    },
    {
      "id": "nexus_npm_package_ws_has_241560546_weekly_down_send_typed_ws_frame",
      "name": "Send Typed WebSocket Frame",
      "description": "Sends a single text or binary frame over an open session and returns the frame's Shannon entropy delta relative to the session baseline. Do NOT use to send a sequence of frames in bulk -- call this tool once per frame.",
      "tags": [
        "websocket",
        "entropy"
      ]
    },
    {
      "id": "nexus_npm_package_ws_has_241560546_weekly_down_drain_ws_frame_buffer",
      "name": "Drain WebSocket Frame Buffer",
      "description": "Returns up to max_frames buffered inbound frames received since the last drain (or session open), each annotated with its Shannon entropy delta and schema validation result. Do NOT use as a real-time streaming mechanism -- it returns only frames already buffered.",
      "tags": [
        "websocket",
        "polling"
      ]
    },
    {
      "id": "nexus_npm_package_ws_has_241560546_weekly_down_inspect_ws_session_telemetry",
      "name": "Inspect WebSocket Session Telemetry",
      "description": "Returns real-time telemetry for a session: connection state, frame counts, cumulative and rolling Shannon entropy statistics, schema violation rate, and uptime. Do NOT use as the primary liveness check in a tight loop.",
      "tags": [
        "websocket",
        "telemetry"
      ]
    },
    {
      "id": "nexus_npm_package_ws_has_241560546_weekly_down_close_websocket_session",
      "name": "Close WebSocket Session",
      "description": "Sends a WebSocket close frame with the specified status code, waits for the server close handshake, and removes the session from the registry. Do NOT use to temporarily pause a session -- the session_id is permanently deallocated after this call.",
      "tags": [
        "websocket",
        "session-management"
      ]
    }
  ],
  "metadata": {
    "protocol_note": "This service implements the Model Context Protocol (MCP) at /mcp, not A2A's own JSONRPC/gRPC/HTTP+JSON task methods (message/send, tasks/get, etc.). This Agent Card is provided for discovery/indexing purposes; A2A-conformant task orchestration is not implemented. No API key is required by this asset. See payment_info below for the per-route x402 payment status.",
    "_NEXUS_AGENT_CARD_PAYMENT_INFO": true,
    "payment_info": {
      "POST /ws-sessions/open": {
        "payment_required": true,
        "scheme": "x402",
        "amount": "$0.01",
        "asset": "USDC",
        "network": "eip155:84532",
        "note": "Opens a new managed WebSocket session; the 4 operations below act on an already-open session and are not separately charged."
      },
      "POST /ws-sessions/{session_id}/send-frame": {
        "payment_required": false
      },
      "POST /ws-sessions/{session_id}/drain-frames": {
        "payment_required": false
      },
      "POST /ws-sessions/{session_id}/telemetry": {
        "payment_required": false
      },
      "POST /ws-sessions/{session_id}/close": {
        "payment_required": false
      }
    }
  }
}