26 US federal data domains as 23 MCP tools. Ed25519 signed responses. Free, no API key.
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process.env. You'll be asked to provide them before it can run.AIRNOW_API_KEYCRON_SECRETOPP_API_KEYOPP_PRIVATE_KEYOPP_PROVIDER_URLPORTUPSTASH_REDIS_REST_TOKENUPSTASH_REDIS_REST_URLUSDA_API_KEY[](https://m8ven.ai/mcp/writesdavid-open-primitive-api-1j03nh)