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API referenceExtrinsics

Extrinsics Feed

Last updated

GET
/api/v1/extrinsics

Fetch the recent-extrinsic feed (newest first) for the block explorer; ?limit (<=100) / ?offset (or ?cursor= for stable keyset paging, #1851) and a conjunctive filter set (#1846): ?block=, ?signer=, ?call_module=, ?call_function=, ?call_hash= (0x-prefixed 64-hex-char decoded call hash, requires ?call_module= to keep the JSON scan scoped — matches a Multisig approval chain's linked calls, #4322), ?success=true|false, ?block_start/?block_end (block range), ?from/?to (observed_at epoch-ms range). Pass ?format=csv to download the filtered extrinsic rows as CSV. Computed live from the first-party extrinsics tier (#1345).

Query Parameters

limit?integer

Maximum number of rows to return in one page (at most 100). 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 50.

Range1 <= value <= 100
Default50
offset?integer

Number 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.

Range0 <= value <= 1000000
Default0
cursor?string

Opaque 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.

block?integer

Inclusive first block height of the range to read. Omit for an unbounded end. Must not be later than the range's upper bound.

Range0 <= value
signer?string

Filter to extrinsics signed by this SS58 account.

call_module?string

Filter to calls dispatched into this pallet, e.g. SubtensorModule.

Lengthlength <= 100
call_function?string

Filter to calls of this extrinsic within the pallet, e.g. add_stake.

call_hash?string

Requires call_module so the decoded call-args JSON scan stays scoped.

Match^0x[0-9a-fA-F]{64}$
success?string

Value in

  • "true"
  • "false"
block_start?integer

Inclusive first block height of the range to read. Omit for an unbounded end. Must not be later than the range's upper bound.

Range0 <= value
block_end?integer

Inclusive last block height of the range to read. Omit for an unbounded end. Must not be earlier than the range's lower bound.

Range0 <= value
from?integer

Inclusive first observed_at bound, as epoch MILLISECONDS -- not a block height (use block_start/block_end for that). Omit for an unbounded end. Must not be later than the range's upper bound.

Range0 <= value
to?integer

Inclusive last observed_at bound, as epoch MILLISECONDS -- not a block height (use block_start/block_end for that). Omit for an unbounded end. Must not be earlier than the range's lower bound.

Range0 <= value
format?string

Response format override. Use csv to download the route rows as text/csv; json keeps the default response envelope.

Default"json"

Value in

  • "json"
  • "csv"

Response Body

application/json

application/json

application/json

application/json

application/json

curl -X GET "https://example.com/api/v1/extrinsics"
{  "data": {    "extrinsic_count": 1,    "extrinsics": [      {        "block_number": 5000000,        "call_args": {},        "call_function": "example",        "call_module": "example",        "extrinsic_hash": "a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1a3f1",        "extrinsic_index": 1,        "fee_tao": 0.5,        "observed_at": "2026-06-01T00:00:00.000Z",        "signer": "example",        "success": false,        "summary": "Example description.",        "tip_tao": 0.5      }    ],    "limit": 1,    "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}