{"id":"linuxserver-calibre","name":"calibre","af_score":32.2,"security_score":30.5,"reliability_score":42.5,"what_it_does":"Calibre is an open-source desktop application for managing ebooks: importing/syncing libraries, editing metadata, converting formats (e.g., EPUB/MOBI/PDF), and transferring to e-readers.","best_when":"You want local control over an ebook library and periodic conversions/metadata management on your own machine.","avoid_when":"You need a headless, hosted, network-accessible service with documented REST/MCP contracts, or you must comply with strict server-side security/compliance requirements based on provided API guarantees.","last_evaluated":"2026-03-30T13:32:50.450982+00:00","has_mcp":false,"has_api":false,"auth_methods":["None (local desktop app)"],"has_free_tier":true,"known_gotchas":["Calibre is primarily a desktop/local tool; “API usage” for agents is limited unless you wrap the CLI and manage filesystem/state yourself.","Conversions and library imports can be stateful (depends on source files, metadata, and local library configuration), so retries may not be idempotent."],"error_quality":0.0}