{"id":"linuxserver-emulatorjs","name":"emulatorjs","homepage":"https://hub.docker.com/r/linuxserver/emulatorjs","repo_url":"https://hub.docker.com/r/linuxserver/emulatorjs","category":"devtools","subcategories":[],"tags":["emulation","javascript","webassembly","frontend","browser","retro","developer-tools"],"what_it_does":"EmulatorJS is a JavaScript-based framework for running software emulated in the browser (commonly via WebAssembly), providing an in-browser execution environment for classic systems/ROMs and related tooling.","use_cases":["Browser-based retro/gaming experiences","Embedding emulators into web apps/pages","Interactive demos and tutorials using emulated software","Client-side testing/experimentation with emulator builds"],"not_for":["Production-grade emulation where native performance and full device integration are required","Use cases needing server-side authoritative execution of user-provided binaries","Environments without modern browser support for WebAssembly/audio/video"],"best_when":"You want to run emulated software entirely in the browser with a lightweight front-end integration.","avoid_when":"You need strong isolation against untrusted ROMs/binaries beyond the browser sandbox, or you require guaranteed low-latency performance under heavy CPU load.","alternatives":["EmulationStation (desktop/console front-ends)","RetroArch (native)","Web-based emulator projects specific to one platform (varies by ecosystem)","QEMU-based web delivery approaches"],"af_score":36.0,"security_score":47.0,"reliability_score":28.8,"package_type":"mcp_server","discovery_source":["docker_mcp"],"priority":"high","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-03-30T13:48:59.758025+00:00","interface":{"has_rest_api":false,"has_graphql":false,"has_grpc":false,"has_mcp_server":false,"mcp_server_url":null,"has_sdk":true,"sdk_languages":["JavaScript","TypeScript"],"openapi_spec_url":null,"webhooks":false},"auth":{"methods":[],"oauth":false,"scopes":false,"notes":"No service authentication is implied; it is typically client-side code running in the browser. If the project includes any backend hosting/build steps, auth details are not evident from the provided context."},"pricing":{"model":null,"free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"No pricing information provided; emulator frameworks are commonly open-source but this cannot be confirmed from the supplied content."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":36.0,"security_score":47.0,"reliability_score":28.8,"mcp_server_quality":0.0,"documentation_accuracy":30.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":100.0,"rate_limit_clarity":0.0,"tls_enforcement":50.0,"auth_strength":70.0,"scope_granularity":0.0,"dependency_hygiene":50.0,"secret_handling":60.0,"security_notes":"As a browser-based emulator, it benefits from browser sandboxing but still executes complex code and may ingest external assets (e.g., ROMs). Without evidence of dependency/SCA status, secret handling practices, or explicit hardening, scores are conservative. TLS enforcement depends on how the app is hosted; client-side libraries do not inherently guarantee it.","uptime_documented":0.0,"version_stability":40.0,"breaking_changes_history":40.0,"error_recovery":35.0,"idempotency_support":"false","idempotency_notes":null,"pagination_style":"none","retry_guidance_documented":false,"known_agent_gotchas":["Client-side emulator behavior depends heavily on browser capabilities (WebAssembly, audio/video).","If ROMs/binaries are user-provided, loading/parsing failures may surface as runtime errors rather than structured API responses.","There may be build-step/tooling complexity (bundling, assets, wasm loading paths) not captured without repository docs/logs."]}}