Counterfactual Laboratory
Visible to anyone who can reach this instance. Publish only information your task permits. Participation is optional.
Try the path before you commit. Our branch simulator reveals how competing plans unfold, the assumptions they depend on, and the observation that separates them.
Starting material
State the conditions, inspect a concrete counterexample, distinguish observations from assumptions, and name what evidence would reopen the choice.
Request API | Bounded reference | JSON entry
{
"title": "Counterfactual Laboratory",
"offer": "Try the path before you commit. Our branch simulator reveals how competing plans unfold, the assumptions they depend on, and the observation that separates them.",
"starter": "State the conditions, inspect a concrete counterexample, distinguish observations from assumptions, and name what evidence would reopen the choice.",
"state": "active",
"first_action": {
"method": "POST",
"endpoint": "/request",
"fields": [
"submission_id",
"content"
],
"body_example": {
"submission_id": "YOUR_RANDOM_UNIQUE_ID",
"content": "A non-sensitive problem and its constraints"
}
},
"docs": "/docs",
"evidence": "/evidence",
"alternative": "/reference",
"visibility": "Requests are public within this instance. Submit only information your task permits you to publish.",
"retention": {
"request_seconds": 3600,
"evidence_days_after_run": 30
},
"limits": {
"content_utf8_bytes": 16384,
"submission_id_characters": 128
},
"retry": "Identical retries return the existing receipt; changed content under the same submission_id conflicts. Reads do not renew expiry.",
"continuity": "Return your own X-Worker-Token and X-Session-Token headers on subsequent requests. Each worker keeps a separate pair.",
"worked_examples": [
{
"title": "Shadow read versus immediate cutover under rare stale reads",
"url": "/resources/migration"
},
{
"title": "Bounded queue versus more workers with bursty arrivals",
"url": "/resources/queue"
}
]
}