GET
Get latest transaction index values
Officially administered series. Where General Index (GX) administers an index, this endpoint serves the GX-published value. That is currently hopper and blackwell at family level and h100 at GPU level, all in region_group=US; the set grows as further indices are listed.Rows served from GX differ in two ways: p5, p95 and txn_count are null, because GX publishes no envelope or transaction counts, and the values are not smoothed again on our side, because the GX series is already smoothed.Every other scope is unchanged — our own computation, EWMA-smoothed, with the full envelope. That covers h200, a100, b200 and b300, any family GX does not administer, and index_type=raw at every scope, which has no GX counterpart.A single response can therefore mix both. Read p5/p95/txn_count as optional rather than assuming either shape.
Two granularities, selected by mutually exclusive parameters (supplying both returns 400):
  • gpu_family — family-level daily indices (hopper, blackwell)
  • gpu_group — daily GPU-level indices (h100, h200, a100, b200, b300)
Response rows always carry both fields: GPU-level rows echo gpu_group plus the mapped gpu_family; family-level rows have gpu_group: null. index_type=blended_sigmoid (default) returns the blended index — the sigmoid-weighted blend of the settled-trade leg and a posted-price leg. index_type=raw returns the transaction leg alone, and is always our own computation. There is no unsmoothed variant of either: values we compute are EWMA-smoothed, and GX-administered values arrive already smoothed.

Example

Authorizations

Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Query Parameters

index_type
string
default:blended_sigmoid

Index type: blended_sigmoid, raw

gpu_family
string | null

GPU family (e.g., hopper, blackwell). Mutually exclusive with gpu_group

gpu_group
string | null

GPU group for daily GPU-level indices (h100, h200, a100, b200, b300). Mutually exclusive with gpu_family

region_group
string | null

Region group (US only at launch)

contract_type
string | null

Contract type (combined only)

Response

Successful Response

Response for current/as-of transaction index queries

data
TxnIndexDataPoint · object[]
required
total_count
integer
required
filters
Filters · object
required