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capability · T1 · instruction

Strict JSON failed

cap_inst_001

Score
0%
Turns
1
1 useful · 0 useless
Interventions
0
harness hints (HHI)
Tool calls
0/0
matched expected trajectory
Errors
0/0
recovered / total
Latency
1.94s
Tokens
85
0 reasoning
Cost
$0.00000
schema_violation — Malformed / unparseable output · output is not valid JSON

Trajectory timeline

Turn-by-turn replay · useless turns annotated with the classifier reason

  1. #0modeluseful
    response

Prompt / output inspector

instruction
Return a JSON object with keys "name" (string), "age" (integer) and "languages" (array of strings) describing a fictional developer. Output only the JSON, no prose, no code fences.
final output
Sure! Here is the JSON:
{name: 'Ada', age: '31', languages: 'TypeScript'}
expected
{"type":"json_schema","requiredKeys":["name","age","languages"]}

Spans

1 recorded · tokens & cost per span

  • generate1.94s
    66 in · 0 cached · 19 out · $0.00000 · ttft 1.01s

Events

  • task_started{"trial":0,"taskId":"cap_inst_001","scaffold":null}
  • task_finished{"score":0,"passed":false,"taskId":"cap_inst_001","failureLabel":"schema_violation"}

Scorer metadata

{
 "toolLog": [],
 "scaffold": null
}
Capabilityjson_schemadifficulty 1/5