{
  "version": 1,
  "date": "2026-09-07",
  "scope": "Fresh live ACP authentication/session revalidation using existing installations and account settings",
  "client_source_commit": "627e5d2",
  "sdk_version": "0.11.1",
  "probe_sha256": "f2cc80a38a34b4118fae60d1a8f9ab509d6f67ea647137185ff6dc032cb9df05",
  "harnesses": [
    {
      "harness": "qwen",
      "initial": {
        "tested_at": "2026-09-07T05:21:06.410387+00:00",
        "status": "waiting_auth",
        "agent_info": {
          "name": "qwen-code",
          "title": "Qwen Code",
          "version": "0.19.6"
        },
        "auth_methods": [
          "openai"
        ],
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32000,
        "process_exited": true
      },
      "initial_report_sha256": "f0dd562d7cd5a87a072ef1cc8b758a43f3c4f6143a4c12c456e242e507edfbe5",
      "explicit": {
        "tested_at": "2026-09-07T05:22:55.602432+00:00",
        "status": "failed",
        "auth_method": "openai",
        "authenticated": null,
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32603,
        "process_exited": true
      },
      "explicit_report_sha256": "84ad3f30d35e0c607f8b26c8cd1ff008cc1da0ebb1eadd95b58ce4a3be884356",
      "interpretation": "The sole advertised method openai requires OPENAI_API_KEY; this variable is absent in the probe environment and explicit authenticate returned -32603."
    },
    {
      "harness": "kimi",
      "initial": {
        "tested_at": "2026-09-07T05:21:10.785824+00:00",
        "status": "waiting_auth",
        "agent_info": {
          "name": "Kimi Code CLI",
          "title": null,
          "version": "0.39.1"
        },
        "auth_methods": [
          "login"
        ],
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32000,
        "process_exited": true
      },
      "initial_report_sha256": "69452501519bbdd8092b065f1e18bd404d66e386b0762ac6e46e5e33a0abd58c",
      "explicit": {
        "tested_at": "2026-09-07T05:30:22.747812+00:00",
        "status": "waiting_auth",
        "auth_method": "login",
        "authenticated": null,
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32000,
        "process_exited": true
      },
      "explicit_report_sha256": "5536a753b058eaca8799285e37aa2e6208614fa879e90a61ad356f0fe9db959d",
      "interpretation": "Session creation and explicit authenticate(login) both returned -32000. Native doctor found no config.toml or tui.toml; login help describes a device-code flow."
    },
    {
      "harness": "gemini",
      "initial": {
        "tested_at": "2026-09-07T05:21:14.392492+00:00",
        "status": "waiting_auth",
        "agent_info": {
          "name": "gemini-cli",
          "title": "Gemini CLI",
          "version": "0.49.0"
        },
        "auth_methods": [
          "oauth-personal",
          "gemini-api-key",
          "vertex-ai",
          "gateway"
        ],
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32000,
        "process_exited": true
      },
      "initial_report_sha256": "80e32ed9d9335870450b973d3284f590bf3ad69234207241ac3d571b37483a7a",
      "explicit": {
        "tested_at": "2026-09-07T05:22:50.758167+00:00",
        "status": "waiting_auth",
        "auth_method": "oauth-personal",
        "authenticated": null,
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32000,
        "process_exited": true
      },
      "explicit_report_sha256": "c7531882ccc80bde34f46abcb9c01a615bdf131f0b2e20df1040044e67bf8034",
      "interpretation": "Configured oauth-personal authentication was explicitly attempted. The server rejected this client for individual accounts and directed migration to Antigravity. This is not classified as merely missing cached credentials."
    },
    {
      "harness": "openhands",
      "initial": {
        "tested_at": "2026-09-07T05:21:19.747000+00:00",
        "status": "waiting_auth",
        "agent_info": {
          "name": "OpenHands CLI ACP Agent",
          "title": null,
          "version": "1.16.0"
        },
        "auth_methods": [
          "oauth"
        ],
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32000,
        "process_exited": true
      },
      "initial_report_sha256": "29acf7f8d27477399af2bc5e71cab64e51a466ab3e5fb86d6fa0bc7638b29f3c",
      "interpretation": "Local ACP new_session returned -32000. Installed local agent code maps MissingAgentSpec from load_agent_specs to this response; an agent/model configuration is required. The advertised oauth handler starts a Cloud device login and was not invoked to silently choose new settings."
    },
    {
      "harness": "cursor",
      "initial": {
        "tested_at": "2026-09-07T05:21:23.574797+00:00",
        "status": "waiting_auth",
        "agent_info": null,
        "auth_methods": [
          "cursor_login"
        ],
        "session_created": null,
        "inference": false,
        "error_type": "RequestError",
        "error_code": -32000,
        "process_exited": true
      },
      "initial_report_sha256": "11389533bf93d43e1f97afd9ea643610d26628e83f50217c4f919bb20ecba322",
      "explicit": {
        "tested_at": "2026-09-07T05:24:17.024430+00:00",
        "status": "failed",
        "auth_method": "cursor_login",
        "authenticated": null,
        "session_created": null,
        "inference": false,
        "error_type": "TimeoutError",
        "error_code": null,
        "process_exited": true
      },
      "explicit_report_sha256": "f732b54da23267b4a1b0f24392a903badd6ba4ac5bc4f92a599488222ab97678",
      "interpretation": "Native status reports a cached login, but explicit ACP cursor_login reached the 30-second request deadline. No session/prompt passed; credentials are not declared absent."
    },
    {
      "harness": "cline",
      "initial": {
        "tested_at": "2026-09-07T05:25:48.074955+00:00",
        "status": "failed",
        "agent_info": {
          "name": "cline",
          "title": null,
          "version": "3.0.61"
        },
        "auth_methods": [
          "cline",
          "cline-pass",
          "openai-codex"
        ],
        "session_created": true,
        "inference": true,
        "error_type": "RequestError",
        "error_code": -32603,
        "process_exited": true
      },
      "initial_report_sha256": "5b7f0c9a1bbbea814e428fb4331cd88a305318d08de02fb59787682692d60442",
      "interpretation": "Session creation succeeded; the exact synthetic prompt returned -32603 with no assistant text. Private stderr again identified required re-authentication."
    }
  ],
  "external_sources": [
    "https://github.com/google-gemini/gemini-cli/discussions/28017",
    "https://cursor.com/docs/cli/acp"
  ],
  "limitations": [
    "No credentials or account identities are included. Only explicitly selected advertised auth methods were invoked.",
    "No inference was requested except the one synthetic Cline prompt attempt.",
    "Cursor timeout is inconclusive about the underlying cause; a cached login is not a successful ACP session.",
    "No global harness installation, account, model, provider or authentication setting was changed."
  ]
}