{
  "tested_on": "2026-10-05",
  "timezone": "America/Los_Angeles",
  "client": {
    "name": "Muse Code",
    "version": "1.4.3",
    "build": "1.4.3-R5018.1",
    "platform": "Linux"
  },
  "scope": {
    "provider": "echo",
    "meta_provider_authenticated": false,
    "local_fixture": true,
    "fixture_tool_count": 1,
    "tools_executed": false,
    "account_reads": false,
    "phone_calls": false,
    "credentials": "Synthetic values only. No real credential was used."
  },
  "settings_location": {
    "with_xdg_config_home": "$XDG_CONFIG_HOME/muse/settings.json",
    "isolation": "Each case used a separate scratch configuration root and workspace."
  },
  "fixture_cases": [
    {
      "case": "live-camel-no-headers",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable-http",
            "url": "local fixture endpoint",
            "enabled": true,
            "mode": "required"
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [
        {
          "method": "initialize",
          "authorization_header_observed": null,
          "synthetic_probe_header_observed": null
        },
        {
          "method": "notifications/initialized",
          "authorization_header_observed": null,
          "synthetic_probe_header_observed": null
        },
        {
          "method": "tools/list",
          "authorization_header_observed": null,
          "synthetic_probe_header_observed": null
        }
      ],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "live-camel-disabled",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable-http",
            "url": "local fixture endpoint",
            "enabled": false,
            "mode": "required"
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "unavailable-required",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable-http",
            "url": "local unreachable endpoint",
            "enabled": true,
            "mode": "required"
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 1,
      "observed_requests": [],
      "echo_reply_received": false,
      "mcp_warning_observed": false,
      "startup_failure": "Required MCP server probe failed during startup because the server could not be reached."
    },
    {
      "case": "unavailable-optional",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable-http",
            "url": "local unreachable endpoint",
            "enabled": true,
            "mode": "optional"
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "live-camel-type",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable-http",
            "url": "local fixture endpoint",
            "mode": "required",
            "headers": {
              "Authorization": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
              "X-Probe": "${MUSE_CONFIG_PROBE_TOKEN}"
            }
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [
        {
          "method": "initialize",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        },
        {
          "method": "notifications/initialized",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        },
        {
          "method": "tools/list",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        }
      ],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "live-snake-transport",
      "settings_shape": {
        "schema_version": 1,
        "mcp_servers": {
          "probe": {
            "url": "local fixture endpoint",
            "mode": "required",
            "headers": {
              "Authorization": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
              "X-Probe": "${MUSE_CONFIG_PROBE_TOKEN}"
            },
            "transport": "streamable_http"
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [
        {
          "method": "initialize",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        },
        {
          "method": "notifications/initialized",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        },
        {
          "method": "tools/list",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        }
      ],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "live-camel-literal-header",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable-http",
            "url": "local fixture endpoint",
            "mode": "required",
            "headers": {
              "Authorization": "Bearer synthetic_probe_value_only"
            }
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [
        {
          "method": "initialize",
          "authorization_header_observed": "Bearer synthetic_probe_value_only",
          "synthetic_probe_header_observed": null
        },
        {
          "method": "notifications/initialized",
          "authorization_header_observed": "Bearer synthetic_probe_value_only",
          "synthetic_probe_header_observed": null
        },
        {
          "method": "tools/list",
          "authorization_header_observed": "Bearer synthetic_probe_value_only",
          "synthetic_probe_header_observed": null
        }
      ],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "live-camel-transport",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "url": "local fixture endpoint",
            "mode": "required",
            "headers": {
              "Authorization": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
              "X-Probe": "${MUSE_CONFIG_PROBE_TOKEN}"
            },
            "transport": "streamable_http"
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [
        {
          "method": "initialize",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        },
        {
          "method": "notifications/initialized",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        },
        {
          "method": "tools/list",
          "authorization_header_observed": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
          "synthetic_probe_header_observed": "${MUSE_CONFIG_PROBE_TOKEN}"
        }
      ],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "live-camel-type-underscore",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable_http",
            "url": "local fixture endpoint",
            "mode": "required",
            "headers": {
              "Authorization": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
              "X-Probe": "${MUSE_CONFIG_PROBE_TOKEN}"
            }
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    },
    {
      "case": "live-both-aliases",
      "settings_shape": {
        "schema_version": 1,
        "mcpServers": {
          "probe": {
            "type": "streamable-http",
            "url": "local fixture endpoint",
            "mode": "required",
            "headers": {
              "Authorization": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
              "X-Probe": "${MUSE_CONFIG_PROBE_TOKEN}"
            }
          }
        },
        "mcp_servers": {
          "other": {
            "type": "streamable-http",
            "url": "local fixture endpoint",
            "mode": "required",
            "headers": {
              "Authorization": "Bearer ${MUSE_CONFIG_PROBE_TOKEN}",
              "X-Probe": "${MUSE_CONFIG_PROBE_TOKEN}"
            }
          }
        }
      },
      "configured_environment": {
        "MUSE_CONFIG_PROBE_TOKEN": "synthetic_probe_value_only"
      },
      "exit_code": 0,
      "observed_requests": [],
      "echo_reply_received": true,
      "mcp_warning_observed": false
    }
  ],
  "production_oauth_challenge": {
    "server_url": "https://call4.me/mcp",
    "configuration": {
      "schema_version": 1,
      "mcpServers": {
        "call4me": {
          "type": "streamable-http",
          "url": "https://call4.me/mcp",
          "enabled": true,
          "mode": "required"
        }
      }
    },
    "provider": "echo",
    "exit_code": 1,
    "native_observation": "Required MCP server call4me failed during startup because it requires an OAuth sign in. The client requested muse mcp login call4me and restart.",
    "native_request_trace": null,
    "native_request_trace_note": "The production native client requests were not instrumented. This observation comes from the client startup error, not a captured request log.",
    "independent_http_check": {
      "method": "GET",
      "request_accept": "application/json, text/event-stream",
      "response_status": 401,
      "www_authenticate": "Bearer resource_metadata=\"https://call4.me/.well-known/oauth-protected-resource/mcp\"",
      "response_error_message": "sign in to call4me to use this server"
    },
    "oauth_login_completed": false,
    "account_access_established": false,
    "oauth_login_command_invoked": false,
    "manual_dynamic_client_registration_requested": false
  },
  "limitations": [
    "The echo provider returns a deterministic reply and does not demonstrate model reasoning or tool selection.",
    "Local initialize and tools/list requests establish discovery of a synthetic fixture, not access to Call4me.",
    "A successful process exit alone does not establish that MCP configuration was loaded. Some invalid combinations produced no server requests and no MCP warning.",
    "Production OAuth challenge detection is not a completed OAuth authorization or authenticated account read."
  ],
  "fixture_case_note": "Settings shapes describe the inputs tested. Local endpoint URLs are normalized labels, so these shapes are evidence records, not runnable installation fragments."
}