{
  "model": "gpt-5.4-mini",
  "reasoningEffort": "high",
  "completedAt": "2026-10-01T14:47:49.831Z",
  "sourceHashes": {
    "src/agent/model-prompt.ts": "a5e23501dda04800c084fbcda114d1724541ca363b1848a0ae84adf4ad69826f",
    "src/agent/openai.ts": "3d2672d5f6fe72beb06381990623a0c29d9962c634d4cd692b11f5c6987dfc36",
    "scripts/eval-agent.mjs": "c31e0be77d1665b9f76dcb30dd02ebe9559cd27aa6244d8f973a32152ea2024d"
  },
  "results": [
    {
      "id": "investigate-edit-verify",
      "task": "Fix the cents conversion in price.mjs. Investigate the tests, edit the implementation, and verify the fix. Keep unrelated files and existing tests unchanged.",
      "passed": true,
      "answer": "Fixed `price.mjs` so `cents()` now rounds monetary values correctly instead of flooring them, handling cases like `1.005 -> 101` and `12.345 -> 1235`. I verified the change by running `node check.mjs`, and it passed (`price checks passed`).",
      "verification": "price checks passed",
      "turns": [
        {
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          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_v05iiqKe49pTOz9KW4OkXO29",
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                "entries": [
                  {
                    "name": ".git",
                    "kind": "directory"
                  },
                  {
                    "name": "AGENTS.md",
                    "kind": "file"
                  },
                  {
                    "name": "check.mjs",
                    "kind": "file"
                  },
                  {
                    "name": "price.mjs",
                    "kind": "file"
                  },
                  {
                    "name": "unrelated.txt",
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              {
                "id": "call_LgZpjUu3hRUJtmdF4BYzGyDB",
                "tool": "read",
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                  "maxLines": 200,
                  "path": "price.mjs",
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              },
              {
                "id": "call_00nNQ7ijZnBePB71s9qqV6iE",
                "tool": "read",
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        {
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              "id": "call_LgZpjUu3hRUJtmdF4BYzGyDB",
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                "path": "<workspace>/price.mjs",
                "content": "export function cents(value) { return Math.floor(value * 100); }\n",
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                "truncated": false
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            {
              "id": "call_00nNQ7ijZnBePB71s9qqV6iE",
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              "ok": true,
              "value": {
                "path": "<workspace>/check.mjs",
                "content": "import assert from \"node:assert/strict\";\nimport { cents } from \"./price.mjs\";\nassert.equal(cents(1.005), 101);\nassert.equal(cents(12.345), 1235);\nassert.equal(cents(0), 0);\nconsole.log(\"price checks passed\");\n",
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          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_xDBkU9hEaU4kkz62aMvP0Qqg",
                "tool": "write",
                "input": {
                  "content": "function toPlainString(value) {\n  const text = String(value);\n  if (!text.includes(\"e\")) return text;\n\n  const [coefficient, exponentText] = text.split(\"e\");\n  const exponent = Number(exponentText);\n  const negative = coefficient.startsWith(\"-\");\n  const unsigned = negative ? coefficient.slice(1) : coefficient;\n  const [whole, fraction = \"\"] = unsigned.split(\".\");\n  const digits = whole + fraction;\n  const decimalIndex = whole.length + exponent;\n\n  let plain;\n  if (decimalIndex <= 0) {\n    plain = `0.${\"0\".repeat(-decimalIndex)}${digits}`;\n  } else if (decimalIndex >= digits.length) {\n    plain = `${digits}${\"0\".repeat(decimalIndex - digits.length)}`;\n  } else {\n    plain = `${digits.slice(0, decimalIndex)}.${digits.slice(decimalIndex)}`;\n  }\n\n  return negative ? `-${plain}` : plain;\n}\n\nexport function cents(value) {\n  if (!Number.isFinite(value)) return value;\n\n  const plain = toPlainString(Math.abs(value));\n  const [whole, fraction = \"\"] = plain.split(\".\");\n  const centsDigits = (fraction + \"00\").slice(0, 3);\n  let cents = BigInt(whole) * 100n + BigInt(centsDigits.slice(0, 2));\n\n  if (centsDigits[2] >= \"5\") cents += 1n;\n\n  const result = Number(cents);\n  return value < 0 ? -result : result;\n}\n",
                  "path": "price.mjs"
                }
              }
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        },
        {
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              "id": "call_xDBkU9hEaU4kkz62aMvP0Qqg",
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              "ok": true,
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                "bytes": 1214
              }
            }
          ],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_yXCoGjFqyswTNmdBlkkw487j",
                "tool": "bash",
                "input": {
                  "command": "node check.mjs",
                  "cwd": "<workspace>",
                  "timeoutMs": 30000
                }
              }
            ]
          }
        },
        {
          "outcomes": [
            {
              "id": "call_yXCoGjFqyswTNmdBlkkw487j",
              "tool": "bash",
              "ok": true,
              "value": {
                "cwd": "<workspace>",
                "stdout": "price checks passed\n",
                "stderr": "",
                "exitCode": 0,
                "signal": null,
                "timedOut": false,
                "truncated": false
              }
            }
          ],
          "decision": {
            "kind": "finish",
            "result": {
              "answer": "Fixed `price.mjs` so `cents()` now rounds monetary values correctly instead of flooring them, handling cases like `1.005 -> 101` and `12.345 -> 1235`. I verified the change by running `node check.mjs`, and it passed (`price checks passed`)."
            }
          }
        }
      ],
      "compactions": 0,
      "durationMs": 52424
    },
    {
      "id": "project-context",
      "task": "Implement greet(name) in src/greet.mjs using the project instructions already supplied. Read and edit only greet.mjs, then verify by running exactly node ../check.mjs. Do not reread AGENTS.md or inspect the test file. Preserve existing tests and unrelated files.",
      "passed": true,
      "answer": "Implemented `greet(name)` in `src/greet.mjs` to return `Ahoy, <trimmed name>!` and fall back to `Ahoy, friend!` for empty or missing names. Verified with `node ../check.mjs` — greeting checks passed.",
      "verification": "greeting checks passed",
      "turns": [
        {
          "outcomes": [],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_PcqCek3WuiurS7tAHr3pZP4n",
                "tool": "read",
                "input": {
                  "maxLines": 200,
                  "path": "greet.mjs",
                  "startLine": 1
                }
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            ]
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        },
        {
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              "id": "call_PcqCek3WuiurS7tAHr3pZP4n",
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              "value": {
                "path": "<workspace>/src/greet.mjs",
                "content": "export function greet(name) { return \"hello\"; }\n",
                "startLine": 1,
                "endLine": 2,
                "totalLines": 2,
                "truncated": false
              }
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          ],
          "decision": {
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            "calls": [
              {
                "id": "call_LlqE7SsFzHJ7uUx75vf1Ush5",
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                "input": {
                  "newText": "export function greet(name) {\n  const trimmed = typeof name === \"string\" ? name.trim() : \"\";\n  return `Ahoy, ${trimmed || \"friend\"}!`;\n}\n",
                  "oldText": "export function greet(name) { return \"hello\"; }\n",
                  "path": "greet.mjs"
                }
              }
            ]
          }
        },
        {
          "outcomes": [
            {
              "id": "call_LlqE7SsFzHJ7uUx75vf1Ush5",
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              "ok": true,
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                "bytes": 137
              }
            }
          ],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_aOVdWkPGYxzJCcyf2KO0FCqH",
                "tool": "bash",
                "input": {
                  "command": "node ../check.mjs",
                  "cwd": "<workspace>/src",
                  "timeoutMs": 300000
                }
              }
            ]
          }
        },
        {
          "outcomes": [
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              "id": "call_aOVdWkPGYxzJCcyf2KO0FCqH",
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              "value": {
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                "stdout": "greeting checks passed\n",
                "stderr": "",
                "exitCode": 0,
                "signal": null,
                "timedOut": false,
                "truncated": false
              }
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          ],
          "decision": {
            "kind": "finish",
            "result": {
              "answer": "Implemented `greet(name)` in `src/greet.mjs` to return `Ahoy, <trimmed name>!` and fall back to `Ahoy, friend!` for empty or missing names. Verified with `node ../check.mjs` — greeting checks passed."
            }
          }
        }
      ],
      "compactions": 0,
      "durationMs": 10199
    },
    {
      "id": "nested-guidance",
      "task": "Read src/code.txt first, then report its content according to project conventions. Do not edit any files.",
      "passed": true,
      "answer": "Scoped code: cobalt",
      "verification": "guidance checks passed",
      "turns": [
        {
          "outcomes": [],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_9cNnnAVopsMO2Uz3J0BcHD3V",
                "tool": "read",
                "input": {
                  "maxLines": 200,
                  "path": "src/AGENTS.md",
                  "startLine": 1
                }
              }
            ]
          }
        },
        {
          "outcomes": [
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              "id": "call_9cNnnAVopsMO2Uz3J0BcHD3V",
              "tool": "read",
              "ok": true,
              "value": {
                "path": "<workspace>/src/AGENTS.md",
                "content": "Report codes from this directory with the prefix \"Scoped code: \".\n",
                "startLine": 1,
                "endLine": 2,
                "totalLines": 2,
                "truncated": false
              }
            }
          ],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_BhOTktSzd8AQeCGwtdIUdLpF",
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                "input": {
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            ]
          }
        },
        {
          "outcomes": [
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              "id": "call_BhOTktSzd8AQeCGwtdIUdLpF",
              "tool": "read",
              "ok": true,
              "value": {
                "path": "<workspace>/src/code.txt",
                "content": "cobalt\n",
                "startLine": 1,
                "endLine": 2,
                "totalLines": 2,
                "truncated": false
              }
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          ],
          "decision": {
            "kind": "finish",
            "result": {
              "answer": "Scoped code: cobalt"
            }
          }
        }
      ],
      "compactions": 0,
      "durationMs": 7213
    },
    {
      "id": "recover-and-compact",
      "task": "Read legacy-config.json first. If it is missing, locate the current JSON configuration. Change retries to 3 without changing other settings. Keep existing tests and unrelated files unchanged, and run the checks.",
      "passed": true,
      "answer": "Done — `legacy-config.json` was missing, so I updated `config/current.json` instead. I changed `retries` from `0` to `3` and left the other settings unchanged.\n\nChecks run: `node check.mjs` ✅ (`config checks passed`)\n\nNo unrelated files or tests were modified.",
      "verification": "config checks passed",
      "turns": [
        {
          "outcomes": [],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_yQxNmu89IC7OOOiijBjDXz96",
                "tool": "read",
                "input": {
                  "maxLines": 200,
                  "path": "legacy-config.json",
                  "startLine": 1
                }
              }
            ]
          }
        },
        {
          "outcomes": [
            {
              "id": "call_yQxNmu89IC7OOOiijBjDXz96",
              "tool": "read",
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              "error": {
                "code": "ENOENT",
                "message": "ENOENT: no such file or directory, open '<workspace>/legacy-config.json'"
              }
            }
          ],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_prXjscbXlb7Qd25FFsRIl6oW",
                "tool": "bash",
                "input": {
                  "command": "find . -name AGENTS.md -o -name '*.json' | sort",
                  "cwd": "<workspace>",
                  "timeoutMs": 30000
                }
              }
            ]
          }
        },
        {
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                "stdout": "./AGENTS.md\n./config/current.json\n",
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                "exitCode": 0,
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                "timedOut": false,
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              }
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          ],
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                "id": "call_qwU389xYdv1oLmP5yZG5ZKRk",
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                "message": "ENOENT: no such file or directory, open '<workspace>/config/AGENTS.md'"
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            "calls": [
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                "id": "call_N8cpaIcGKGiBFRC3RWQfxRCe",
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              "value": {
                "path": "<workspace>/config/current.json",
                "content": "{\"retries\":0,\"region\":\"us-east-1\",\"notes\":\"Keep this exact note.\"}\n",
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                "totalLines": 2,
                "truncated": false
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          "decision": {
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            "calls": [
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                "id": "call_SqGCx4VZyDHen9kZ3Pdli9yI",
                "tool": "edit",
                "input": {
                  "newText": "{\"retries\":3,\"region\":\"us-east-1\",\"notes\":\"Keep this exact note.\"}",
                  "oldText": "{\"retries\":0,\"region\":\"us-east-1\",\"notes\":\"Keep this exact note.\"}",
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            ]
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        },
        {
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          "decision": {
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            "calls": [
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                "id": "call_DcJrl544CE3z94H5BxRHKvYQ",
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                "input": {
                  "command": "node check.mjs",
                  "cwd": "<workspace>",
                  "timeoutMs": 300000
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                "stdout": "config checks passed\n",
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          "decision": {
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                "tool": "read",
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                "content": "{\"retries\":3,\"region\":\"us-east-1\",\"notes\":\"Keep this exact note.\"}\n",
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          ],
          "decision": {
            "kind": "continue",
            "calls": [
              {
                "id": "call_nrcVNdoQxKRr9vRG6aVEsgNP",
                "tool": "read",
                "input": {
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                  "path": "config/current.json",
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          }
        },
        {
          "outcomes": [
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              "value": {
                "path": "<workspace>/config/current.json",
                "content": "{\"retries\":3,\"region\":\"us-east-1\",\"notes\":\"Keep this exact note.\"}\n",
                "startLine": 1,
                "endLine": 2,
                "totalLines": 2,
                "truncated": false
              }
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          ],
          "decision": {
            "kind": "finish",
            "result": {
              "answer": "Done — `legacy-config.json` was missing, so I updated `config/current.json` instead. I changed `retries` from `0` to `3` and left the other settings unchanged.\n\nChecks run: `node check.mjs` ✅ (`config checks passed`)\n\nNo unrelated files or tests were modified."
            }
          }
        }
      ],
      "compactions": 8,
      "durationMs": 48087
    }
  ],
  "note": "Recorded live API evaluation in disposable workspaces. Temporary paths are replaced with <workspace>. This is task-specific evidence, not a general reliability guarantee."
}