List Events
curl --request GET \
--url https://api.signa.so/v1/events \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.signa.so/v1/events"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.signa.so/v1/events', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.signa.so/v1/events",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.signa.so/v1/events"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.signa.so/v1/events")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.signa.so/v1/events")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"object": "list",
"data": [
{
"id": "evt_3D7rZ9",
"object": "event",
"type": "trademark.status_changed",
"trademark_id": "tm_9vXq3Rmt",
"office_code": "US",
"occurred_at": "2026-08-14T09:10:00.000Z",
"recorded_at": "2026-08-14T09:10:02.000Z",
"created_at": "2026-08-14T09:10:02.000Z"
}
],
"has_more": false,
"pagination": { "cursor": null },
"request_id": "req_3vXq7RmT"
}
Events
List Events
Read your organization’s event ledger, with a replay checkpoint
GET
/
v1
/
events
List Events
curl --request GET \
--url https://api.signa.so/v1/events \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.signa.so/v1/events"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.signa.so/v1/events', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.signa.so/v1/events",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.signa.so/v1/events"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.signa.so/v1/events")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.signa.so/v1/events")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"object": "list",
"data": [
{
"id": "evt_3D7rZ9",
"object": "event",
"type": "trademark.status_changed",
"trademark_id": "tm_9vXq3Rmt",
"office_code": "US",
"occurred_at": "2026-08-14T09:10:00.000Z",
"recorded_at": "2026-08-14T09:10:02.000Z",
"created_at": "2026-08-14T09:10:02.000Z"
}
],
"has_more": false,
"pagination": { "cursor": null },
"request_id": "req_3vXq7RmT"
}
Beta. The event ledger and its replay rail are stable enough to build on,
but the per-event
data payloads are versioned by payload_version and their
shape is not yet frozen. Pin payload_version in your consumer and read the
changelog before upgrading.Overview
Every webhook Signa sends you is also a row in your organization’s event ledger, addressable by the sameevt_* id that arrives in the webhook-id header. The ledger is append-only and retained for 30 days.
Two ways to read it:
- Newest first (
sort=-id, the default) withcursor— a browse/tail feed. - Oldest first (
sort=id) withafter— a durable replay from a checkpoint you persist. This is the recovery path when your receiver was down: store the lastevt_*you processed, and ask for everything after it.
events:read scope.
Query Parameters
integer
default:"20"
Page size (1-100).
string
Opaque cursor from the previous response. Cannot be combined with
after.string
default:"-id"
-id (newest first) or id (oldest first). after requires id.string
Exclusive
evt_* replay checkpoint. Valid only with sort=id. Returns 410 replay_window_expired when the checkpoint has aged out of the 30-day window.string
Filter by event type(s), comma-separated:
alert.created, trademark.status_changed, office_action.issued.string
Filter by office code(s), comma-separated. WIPO ST.3 uppercase (
US, EM); legacy acronym slugs (uspto, euipo) and EU are also accepted.string
Filter by trademark ID (
tm_*).string
ISO date or timestamp — events recorded by Signa at or after this time.
string
Filter by the portfolio membership snapshot taken when the event was recorded. Applies to every family,
alert.created included: an alert is in the portfolio only when its matched mark was a member at event time. Later membership changes never rewrite history. Requires portfolios:manage.Response
string
Always
"list".object[]
Array of event summaries.
Show event
Show event
string
Event ID (
evt_*, opaque). The same value arrives in the webhook-id header of the matching delivery.string
Always
"event".string
Event slug, e.g.
trademark.status_changed.string | null
The mark this event is about (
tm_*), or null for families with no trademark identity.string | null
WIPO ST.3 office code, or
null.string
When Signa produced the event: ingestion time for
trademark.* and office_action.*, alert-creation time for alert.created. Not the office’s own date — that is source_date on the detail body.string
When the ledger row was written.
string
Alias of
recorded_at.boolean
Whether another page exists.
object
{ cursor } — opaque next-page cursor, null when exhausted.Errors
| Status | type | When |
|---|---|---|
| 400 | validation_error | Bad query parameter — after blank, after with cursor, after without sort=id, unknown office_code |
| 400 | cursor_expired / cursor_invalid | Malformed/tampered cursor, or one reused with different bound parameters |
| 403 | forbidden | Missing events:read (or portfolios:manage when using portfolio_id) |
| 404 | not_found | portfolio_id doesn’t exist or belongs to another org |
| 410 | replay_window_expired | The after checkpoint is older than the 30-day retention window |
Code Examples
# Tail the feed
curl "https://api.signa.so/v1/events?limit=20" \
-H "Authorization: Bearer sig_YOUR_KEY"
# Replay from a stored checkpoint
curl "https://api.signa.so/v1/events?sort=id&after=evt_3D7rZ9&limit=100" \
-H "Authorization: Bearer sig_YOUR_KEY"
// Replay everything you missed, oldest first.
const page = await signa.events.list({ sort: 'id', after: lastProcessedId, limit: 100 });
for await (const event of page) {
await handle(event);
}
{
"object": "list",
"data": [
{
"id": "evt_3D7rZ9",
"object": "event",
"type": "trademark.status_changed",
"trademark_id": "tm_9vXq3Rmt",
"office_code": "US",
"occurred_at": "2026-08-14T09:10:00.000Z",
"recorded_at": "2026-08-14T09:10:02.000Z",
"created_at": "2026-08-14T09:10:02.000Z"
}
],
"has_more": false,
"pagination": { "cursor": null },
"request_id": "req_3vXq7RmT"
}
Related Endpoints
- Retrieve Event - full detail with field-level before/after diffs
- List Alerts - the alert resource an
alert.createdevent wraps - Webhooks - the push rail carrying the same
evt_*ids