{"id":"luizcarlosfaria-echo-server","name":"echo-server","homepage":"https://hub.docker.com/r/luizcarlosfaria/echo-server","repo_url":"https://hub.docker.com/r/luizcarlosfaria/echo-server","category":"devtools","subcategories":[],"tags":["developer-tools","testing","networking","http","echo","mock","integration-testing"],"what_it_does":"echo-server is a simple server that echoes back received input (commonly used as a minimal example for building/testing network services).","use_cases":["Local development and integration testing for HTTP servers/clients","Testing WebSocket/streaming or request/response plumbing (depending on the implementation)","Benchmarking latency/throughput of a thin server layer","Demo/example scaffolding for learning or documentation"],"not_for":["Production workloads requiring authentication, authorization, or strong security guarantees","Serving untrusted clients without additional protective controls (rate limiting, WAF, input validation)","Implementing business logic or data persistence"],"best_when":"You need a minimal echo endpoint for testing connectivity and agent/tool integration in a controlled environment.","avoid_when":"You need a secure, multi-tenant API or any interface that must enforce strict authorization and data handling by default.","alternatives":["httpbin (HTTP testing),","Postman Echo","WireMock","MockServer","nginx with simple echo/return handlers","Express/Koa/Fastify echo examples"],"af_score":30.2,"security_score":17.5,"reliability_score":0.0,"package_type":"mcp_server","discovery_source":["docker_mcp"],"priority":"low","status":"evaluated","version_evaluated":null,"last_evaluated":"2026-04-04T21:27:20.848982+00:00","interface":{"has_rest_api":false,"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":"No authentication details were provided in the supplied information for echo-server."},"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 was provided; echo servers are typically self-hosted examples."},"requirements":{"requires_signup":false,"requires_credit_card":false,"domain_verification":false,"data_residency":[],"compliance":[],"min_contract":null},"agent_readiness":{"af_score":30.2,"security_score":17.5,"reliability_score":0.0,"mcp_server_quality":0.0,"documentation_accuracy":0.0,"error_message_quality":0.0,"error_message_notes":null,"auth_complexity":100.0,"rate_limit_clarity":0.0,"tls_enforcement":0.0,"auth_strength":0.0,"scope_granularity":0.0,"dependency_hygiene":50.0,"secret_handling":50.0,"security_notes":"No security-specific documentation was provided. Echo-style services commonly accept and reflect user input, so they should be protected with TLS, auth/ACLs, rate limiting, and input/output controls when exposed beyond localhost.","uptime_documented":0.0,"version_stability":0.0,"breaking_changes_history":0.0,"error_recovery":0.0,"idempotency_support":"false","idempotency_notes":null,"pagination_style":"none","retry_guidance_documented":false,"known_agent_gotchas":["Echo semantics can cause agents to loop if they repeatedly submit echoed responses without termination conditions.","Without explicit timeouts/rate limiting, an agent may hang on long-lived connections.","If the interface is not clearly documented (e.g., whether it is HTTP vs WebSocket vs TCP), agents may attempt the wrong protocol."]}}