{"id":"williamyeh-json-server","name":"json-server","homepage":"https://hub.docker.com/r/williamyeh/json-server","repo_url":"https://hub.docker.com/r/williamyeh/json-server","category":"devtools","subcategories":[],"tags":["mock-server","rest-api","testing","prototyping","crud","local-dev","nodejs"],"what_it_does":"json-server is a utility that turns a local JSON file into a mock REST API (CRUD endpoints) with optional support for common REST patterns like filtering, sorting, pagination, and custom routes.","use_cases":["Rapid prototyping of front-end apps against a mock backend","Building fixtures for integration tests","Demo environments and UI development without a real API","Teaching/testing REST interactions","Generating a quick CRUD API from existing sample data"],"not_for":["Production-grade APIs that require robust auth, validation, and operational guarantees","Highly complex business workflows or strict data modeling","Multi-tenant or enterprise-grade environments requiring advanced security/compliance out of the box"],"best_when":"You need a lightweight, local or non-critical mock REST server backed by a static JSON dataset.","avoid_when":"You need strong authentication/authorization controls, guaranteed persistence, or formal API contracts/SLAs.","alternatives":["typicode/json-server (this project) alternatives: json-mock-server","MirageJS (client-side mocking)","Mock Service Worker (MSW)","Prism (for mocking OpenAPI)","WireMock (server-side stubbing)","Nock (HTTP mocking in Node)"],"af_score":51.8,"security_score":28.2,"reliability_score":35.0,"package_type":"mcp_server","discovery_source":["docker_mcp"],"priority":"low","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-04-04T19:38:27.593739+00:00","interface":{"has_rest_api":true,"has_graphql":false,"has_grpc":false,"has_mcp_server":false,"mcp_server_url":null,"has_sdk":false,"sdk_languages":[],"openapi_spec_url":null,"webhooks":false},"auth":{"methods":[],"oauth":false,"scopes":false,"notes":"json-server is typically run locally without built-in auth/authorization. You would need to front it with a proxy or custom middleware if you require access control."},"pricing":{"model":null,"free_tier_exists":false,"free_tier_limits":null,"paid_tiers":[],"requires_credit_card":false,"estimated_workload_costs":null,"notes":"Open-source tool; cost is primarily your infrastructure/runtime to host the mock server."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":51.8,"security_score":28.2,"reliability_score":35.0,"mcp_server_quality":0.0,"documentation_accuracy":70.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":100.0,"rate_limit_clarity":0.0,"tls_enforcement":30.0,"auth_strength":0.0,"scope_granularity":0.0,"dependency_hygiene":55.0,"secret_handling":70.0,"security_notes":"Typical usage is local/dev; transport security depends on how you deploy it (HTTPS termination is not built-in by default). Authorization is not provided out of the box, so do not expose it to untrusted networks without additional safeguards. Dependency hygiene appears generally reasonable for a common OSS package, but without inspecting the manifest here, this is an estimate.","uptime_documented":0.0,"version_stability":60.0,"breaking_changes_history":50.0,"error_recovery":30.0,"idempotency_support":"true","idempotency_notes":"For typical REST CRUD operations on a mock dataset, repeated calls may be idempotent depending on the HTTP method used (e.g., PUT is usually idempotent; POST/patch are not). Specific idempotency guarantees depend on how you configure and whether the server persists changes.","pagination_style":"support for query-based pagination (commonly _page/_limit) rather than a cursor-based scheme","retry_guidance_documented":false,"known_agent_gotchas":["json-server is mock-focused: behavior may differ from a real production API (validation rules, auth, schema enforcement).","If enabled to write back to the data file, concurrent requests and process restarts can cause inconsistent state.","No first-class contract (e.g., OpenAPI) in the tool itself, so agents may rely on conventions rather than schemas.","Authentication/authorization is not built-in; agents must not assume protected endpoints behave securely unless you add a proxy/middleware."]}}