Subnet Hyperparameters History
Last updated
Fetch the append-only hyperparameter-change timeline for one subnet (#4309): each entry is a subnet_hyperparams snapshot recorded when any hyperparameter changed. Forward-only (no pre-feature history). Newest first; ?limit (<=1000) / ?offset, or ?cursor= for stable keyset paging. Pass ?format=csv to download the page as CSV.
Path Parameters
The subnet's numeric id on the Bittensor network, as used by the chain itself.
0 <= valueQuery Parameters
Maximum number of rows to return in one page (at most 1000). A larger value, or a non-positive one, is rejected with 400 invalid_query -- so a short page means the result set is exhausted, not that the server quietly capped you (#9916). Omitted, the server applies 100.
1 <= value <= 1000100Number of rows to skip before the page begins. Correct only in combination with the page size the response actually returned -- prefer cursor for anything beyond the first few pages, since a row inserted mid-scan shifts every later offset.
0 <= value <= 10000000Opaque pagination token: pass back the next_cursor from the previous response verbatim. Its contents are not stable and must not be parsed or constructed. Stable across inserts, unlike a row offset.
Response format override. Use csv to download the route rows as text/csv; json keeps the default response envelope.
"json"Value in
- "json"
- "csv"
Response Body
application/json
application/json
application/json
application/json
curl -X GET "https://example.com/api/v1/subnets/1/hyperparameters/history"{ "data": { "entries": [ { "hyperparams_hash": "a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1", "observed_at": "2026-06-01T00:00:00.000Z" } ], "entry_count": 1, "limit": 1, "netuid": 7, "next_cursor": "example", "offset": 1, "schema_version": 1 }, "meta": { "artifact_path": "example", "cache": "short", "contract_version": "2026-06-29.1", "generated_at": "2026-06-01T00:00:00.000Z", "observed_through": "2026-06-01T00:00:00.000Z", "pagination": { "collection": "example", "cursor": 1, "limit": 1, "next_cursor": 1, "order": "asc", "returned": 1, "sort": "example", "total": 1 }, "published_at": "2026-06-01T00:00:00.000Z", "source": "live-cron-prober", "stale_contract": { "built_under": "example", "live": "example" } }, "ok": true, "schema_version": 1}