weather-mcp-server
weather-mcp-server is a Model Context Protocol (MCP) server for Claude Desktop that provides weather data (current conditions, 5-day forecast, and query history) by integrating with OpenWeatherMap and using PostgreSQL and Redis for persistence and caching.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Uses environment variables for secrets (WEATHER_API_KEY, connection strings) and mentions a security CI step (Trivy + npm audit), but the provided content does not confirm TLS requirements, authorization model for MCP clients, or detailed secret-handling practices within logs/runtime.
⚡ Reliability
Best When
You want Claude Desktop to answer weather questions with up-to-date information and you can provide OpenWeatherMap credentials plus PostgreSQL/Redis runtime dependencies.
Avoid When
You need a standalone API without MCP integration, or you cannot manage secrets and infrastructure dependencies (PostgreSQL/Redis).
Use Cases
- • Enable Claude Desktop to answer weather questions with real-time data
- • Provide weather forecasts for multiple days
- • Store and retrieve historical weather query records
- • Use Redis caching to speed up repeated weather lookups
- • Expose operational/cache statistics through MCP tools
Not For
- • A general-purpose weather REST API for external clients
- • Use cases requiring strict compliance guarantees without additional configuration/review
- • Environments where outbound calls to OpenWeatherMap are not allowed
Interface
Authentication
Authentication appears to be configuration via environment variables for upstream API access. MCP access/authentication for clients is not described in the provided content.
Pricing
No pricing information provided. Upstream costs may apply from OpenWeatherMap plan/limits and your infrastructure (PostgreSQL/Redis).
Agent Metadata
Known Gotchas
- ⚠ Requires correct MCP server startup and Claude Desktop configuration (paths to dist/mcp-entry.js).
- ⚠ Requires environment variables for WEATHER_API_KEY, DATABASE_URL, and REDIS_URL; misconfiguration may cause tool failures.
- ⚠ Integration depends on external OpenWeatherMap API availability and rate limits; unexpected upstream errors may propagate.
Alternatives
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Scores are editorial opinions as of 2026-03-30.