MCP IoT Gateway

HTTP/1.1 200 OK X-Powered-By: Express cache-control: no-cache connection: keep-alive content-type: text/event-stream mcp-session-id: 8f0cfdd2-4f51-4391-95e9-ce1e2f9e57e8 content-length: 243 Date: Fri, 06 Feb 2026 16:14:31 GMT event: message data: {"result":{"protocolVersion":"2025-03-26","capabilities":{"resources":{"subscribe":true,"listChanged":true},"tools":{"listChanged":true}},"serverInfo":{"name":"mcp-iot-gateway","version":"0.1.0"}},"jsonrpc":"2.0","id":1}

event: message data: {"result":{"tools":[{"name":"gateway_list_connections","description":"List all configured IoT protocol connections with status and stats.","inputSchema":{"type":"object","properties":{"protocol":{"type":"string","enum":["mqtt","opcua","sparkplug-b","modbus","s7"],"description":"Filter by protocol type. Omit for all."}},"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"},"execution":{"taskSupport":"forbidden"}},{"name":"gateway_add_connection","description":"Register and connect a new IoT protocol connection. Supports MQTT, OPC-UA, Modbus TCP, and Siemens S7.","inputSchema":{"type":"object","properties":{"key":{"type":"string","minLength":1,"pattern":"^[a-z0-9_-]+$","description":"Unique short identifier (e.g., 'production', 'local')"},"name":{"type":"string","minLength":1,"description":"Human-readable label (e.g., 'Production MQTT Broker')"},"protocol":{"type":"string","enum":["mqtt","opcua","modbus","s7"],"default":"mqtt","description":"Protocol type: 'mqtt', 'opcua', 'modbus', or 's7'."},"url":{"type":"string","description":"Connection URL (MQTT/OPC-UA only). MQTT: mqtt://, mqtts://, ws://. OPC-UA: opc.tcp://host:port"},"username":{"type":"string","description":"MQTT authentication username"},"password":{"type":"string","description":"MQTT authentication password"},"tls_ca_path":{"type":"string","description":"Path to CA certificate file"},"tls_cert_path":{"type":"string","description":"Path to client certificate"},"tls_key_path":{"type":"string","description":"Path to client key"},"client_id":{"type":"string","description":"MQTT client ID"},"security_mode":{"type":"string","enum":["None","Sign","SignAndEncrypt"],"description":"OPC-UA security mode"},"security_policy":{"type":"string","enum":["None","Basic256Sha256","Aes128_Sha256_RsaOaep","Aes256_Sha256_RsaPss"],"description":"OPC-UA security policy"},"host":{"type":"string","description":"Host address (Modbus/S7)"},"port":{"type":"integer","description":"Port number (Modbus: 502, S7: 102)"},"unit_id":{"type":"integer","minimum":1,"maximum":247,"description":"Modbus unit/slave ID (1-247)"},"rack":{"type":"integer","minimum":0,"maximum":7,"description":"S7 PLC rack number (0-7)"},"slot":{"type":"integer","minimum":0,"maximum":31,"description":"S7 PLC slot number (0-31)"},"poll_interval":{"type":"integer","minimum":100,"description":"Poll interval in ms (Modbus/S7)"},"timeout":{"type":"integer","minimum":100,"description":"Connection timeout in ms"}},"required":["key","name"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"},"execution":{"taskSupport":"forbidden"}},{"name":"gateway_remove_connection","description":"Disconnect and remove an IoT protocol connection.","inputSchema":{"type":"object","properties":{"key":{"type":"string","minLength":1,"description":"Connection key to remove"}},"required":["key"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"},"execution":{"taskSupport":

event: message data: {"result":{"content":[{"type":"text","text":"[]"}]},"jsonrpc":"2.0","id":3}

event: message data: {"result":{"content":[{"type":"text","text":"{\"success\":true,\"key\":\"test-peer\",\"url\":\"http://127.0.0.1:50001/mcp\"}"}]},"jsonrpc":"2.0","id":4}

event: message data: {"result":{"content":[{"type":"text","text":"[\n {\n \"key\": \"hub-1\",\n \"name\": \"hub-1\",\n \"url\": \"http://127.0.0.1:50000/mcp\",\n \"status\": \"connected\",\n \"connectedAt\": \"2026-02-06T16:14:31.858Z\",\n \"serverInfo\": {\n \"name\": \"mcp-iot-gateway\",\n \"version\": \"0.1.0\"\n },\n \"toolCount\": 38,\n \"resourceCount\": 0\n }\n]"}]},"jsonrpc":"2.0","id":5}