Stream run events

GET/v1/sessions/{session_id}/runs/{run_id}/events

Stream or replay the run’s events as server-sent events. Each frame carries an SSE id, an event name, and the complete event object as JSON in data. Terminal event types are run_completed, run_cancelled, and error. To reconnect after a disconnect, send Last-Event-ID with the last id you processed. Replay starts strictly after Last-Event-ID when live or persisted history is available. Event ids order events only within one run: treat them as opaque strings, store them with the session and run ids, and deduplicate by run id plus event id. A stream can close cleanly without a terminal frame when no events are available; read the run resource for its authoritative status and reconnect only while it remains non-terminal. Ignore unknown event names and fields.

Generated from the Platform API specification on 2026-09-04.

Path parameters

Parameter	Type	Description
session_id	string	The session, as returned by Create a session.
run_id	string	The run, as returned by Start a run.

Headers

Header	Required	Description
Authorization	yes	Bearer plus a short-lived OAuth access token issued for the Tanomis API audience. Backends obtain tokens with an organization automation client; the CLI’s human login is not an application credential.
X-Organization-ID	yes	The organization_id from the workspace projection you selected in GET /v1/me/workspaces.
X-Workspace-Tenant-ID	yes	The nested tenant_id from the same projection. A header cannot widen what the token grants. Some single-workspace or self-hosted environments take X-Tenant-ID instead, as supplied by their administrator.
Accept	yes	Send text/event-stream.
Last-Event-ID	no	Send 14.

Responses

Status	Meaning
200	Server-sent events.
404	No such run in this session.

Request

cURL

Terminal

curl -X GET "https://api.tanomis.com/v1/sessions/ses_7d4f9c/runs/run_a12bc3/events" \
  -H "Authorization: Bearer $TANOMIS_TOKEN" \
  -H "X-Organization-ID: $TANOMIS_ORG" \
  -H "X-Workspace-Tenant-ID: $TANOMIS_WORKSPACE" \
  -H "Accept: text/event-stream" \
  -H "Last-Event-ID: 14"

Python

import httpx

response = httpx.get(
    f"https://api.tanomis.com/v1/sessions/{session_id}/runs/{run_id}/events",
    headers={
        "Authorization": f"Bearer {token}",
        "X-Organization-ID": organization_id,
        "X-Workspace-Tenant-ID": tenant_id,
        "Accept": "text/event-stream",
        "Last-Event-ID": "14",
    },
)
for line in response.iter_lines():
    print(line)

TypeScript

const response = await fetch(`https://api.tanomis.com/v1/sessions/${sessionId}/runs/${runId}/events`, {
  method: "GET",
  headers: {
    "Authorization": `Bearer ${token}`,
    "X-Organization-ID": organizationId,
    "X-Workspace-Tenant-ID": tenantId,
    "Accept": "text/event-stream",
    "Last-Event-ID": "14",
  },
});
const reader = response.body.getReader();
// Decode server-sent events from the stream; see Stream and replay events.

Response

200 OK · text/event-stream

id: 14
event: message_delta
data: {"id":"14","type":"message_delta","session_id":"ses_7d4f9c","run_id":"run_a12bc3","created_at":"2026-09-03T09:00:00.014Z","data":{"text":"I found"}}