{"server":{"$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","name":"network.luca/spr-mcp","description":"Seal every payment your AI agent makes as a signed record, on your own machine, with your key.","title":"SPR (Sealed Payment Record)","repository":{"url":"https://github.com/luca-network/spr","source":"github"},"version":"0.1.6","websiteUrl":"https://github.com/luca-network/spr","packages":[{"registryType":"npm","identifier":"@luca-network/spr-mcp","version":"0.1.6","transport":{"type":"stdio"},"environmentVariables":[{"description":"The agent's ID, such as agt_research","isRequired":true,"format":"string","name":"SPR_AGENT_ID"},{"description":"The company the agent pays for","isRequired":true,"format":"string","name":"SPR_ENTITY"},{"description":"The book's folder (default ./spr-books); it holds the company's private key","format":"string","name":"SPR_DIR"},{"description":"The company's time zone for accounting dates (default UTC)","format":"string","name":"SPR_TIME_ZONE"},{"description":"on, to return the nonce to sign with each x402 intent","format":"string","name":"SPR_BINDING"}]}]},"_meta":{"io.modelcontextprotocol.registry/official":{"status":"active","statusChangedAt":"2026-10-31T08:02:45.44538Z","publishedAt":"2026-10-31T08:02:45.44538Z","updatedAt":"2026-10-31T08:02:45.44538Z","isLatest":true}}}