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MCP Weather Server

Provides real-time weather information and multi-day forecasts using the Open-Meteo API through a robust, enterprise-grade architecture. It enables AI assistants to retrieve current conditions, 7-day forecasts, and contextual weather data for any location.

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// key findings
🚨
Known vulnerabilities in dependencies: 1 critical, 8 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 1 credential: API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies1 critical8 high5 medium11 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

high@modelcontextprotocol/sdk@1.17.5GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.17.5GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.17.5GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highfastify@5.6.0GHSA-247c-9743-5963

Fastify has a Body Schema Validation Bypass via Leading Space in Content-Type Header

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// required environment variables
This server reads these from process.env. You'll be asked to provide them before it can run.
configALLOWED_ORIGINS
🔐 secretAPI_KEY
configAPI_TIMEOUT
configAUDIT_LOGGING_ENABLED
configAUDIT_LOG_FILE
configAUDIT_LOG_SYSLOG
configBASE_RETRY_DELAY
configBODY_TIMEOUT
configBULKHEAD_MAX_CONCURRENT
configBULKHEAD_MAX_QUEUE_SIZE
configBULKHEAD_QUEUE_TIMEOUT
configCONNECT_TIMEOUT
configHEADERS_TIMEOUT
configHOST
configJITTER_FACTOR
configKEEP_ALIVE_MAX_TIMEOUT
configKEEP_ALIVE_TIMEOUT
configLOG_LEVEL"": "info",
configMAX_CONCURRENT_REQUESTS
configMAX_INPUT_TOKENS
configMAX_OUTPUT_TOKENS
configMAX_RETRIES
configMAX_RETRY_DELAY
configMAX_TOTAL_TOKENS
configMCP_HTTP_PORT8080 # For HTTP transport
configMCP_SERVER_API_KEYS
configMCP_TRANSPORT"": "stdio",
configPOOL_CONNECTIONS
configPOOL_PIPELINING
configPORT
configPREFERRED_RESPONSE_SIZE
configRATE_LIMIT_BURST
configRATE_LIMIT_PER_SECOND
configRATE_LIMIT_REQUESTS
configRATE_LIMIT_SLIDING
configRATE_LIMIT_WINDOW_MS
configREQUEST_TIMEOUT
configTOKEN_BUCKET_CAPACITY
configTOKEN_BUCKET_REFILL_RATE
// full audit trail
The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/kumaran-is-mcp-weather-server-i5wnps)](https://m8ven.ai/mcp/kumaran-is-mcp-weather-server-i5wnps)
commit: bc0f89c9dfb587492c408d1cd72881ee20d17e68
code hash: 8526f9447628aa4845cb98c3c3f7e7897594b808cc83f5466088e36d6e2cf02e
verified: 6/11/2026, 11:28:54 AM
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