List a run's steps

Lists every step execution of the run in start order, including each map item (`item_index`) and retries (`attempt`), with outputs and errors.

GET /v1/routines/runs/{run_id}/steps
Lists every step execution of the run in start order, including each map item (`item_index`) and retries (`attempt`), with outputs and errors.

Authentication

Bearer Token (b3os_sk_ API key or b3os_pat_ token) API Key (cookie: __Host-b3os_session)

Path Parameters

run_id string required path
The run ID (`run_…`).
Example: "run_01m5t5fr06dx6azc42f4wbzf5s"

Query Parameters

limit integer optional query
Page size, from 1 to 100.
cursor string optional query
Opaque cursor from the previous page's `next_cursor`. Omit it for the first page.

Responses

200 A page of step executions.
application/json
object string REQUIRED
Enum: list
data object[] REQUIRED
Array of:
id string REQUIRED
The step ID from the definition.
uses string
item_index integer
Position in the map's list, for steps inside a map body.
status string REQUIRED
Enum: pending, running, waiting, retrying, succeeded, failed, skipped, canceled
attempt integer REQUIRED
started_at string (date-time)
finished_at string (date-time)
duration_ms number
outputs unknown
The step's outputs, once it succeeded.
error object
An RFC 9457 problem. `code` is stable and listed in the errors catalog; `type` links to its entry. `detail` is human-readable and may change. Extension members appear only for the codes that document them; ignore members you do not recognize.
type string (uri) REQUIRED
`https://docs.beta.b3os.org/errors#<code>`.
title string REQUIRED
Short summary of the problem type.
status integer REQUIRED
The HTTP status code, repeated for convenience.
code string REQUIRED
Stable machine-readable error code from the errors catalog.
detail string REQUIRED
Explanation of this occurrence. Never contains secrets.
instance string
The request ID (`req_…`) of the request that failed. Include it when you contact support.
errors object[]
Validation problems, one per field (`invalid_request` and the other codes that list `errors`).
Array of:
pointer string REQUIRED
Where the problem is: a JSON pointer into the request body (`/url`, `/steps/0/uses`), or `#query/<name>`, `#path/<name>` or `#header/<name>` for parameters.
detail string REQUIRED
What is wrong there.
reason string
Finer-grained cause for codes that document one (`unauthorized`, `forbidden`, `egress_denied`, `upstream_unreachable`, …).
required_scope string
The scope that was missing (`forbidden` with `reason: scope`).
retry_after_s integer
Same value as the `Retry-After` header, for clients that only read the body.
limit object
The limit an error refers to. IDs and current values are listed by `GET /v1/limits`.
id string REQUIRED
Limit ID, such as `vision.scrape.rpm` or `sandboxes.concurrent`.
limit number REQUIRED
The limit's value.
unit string REQUIRED
What the limit counts, such as `requests`, `sandboxes`, `vcpu` or `MiB`.
window_s integer
Window length in seconds for rate limits and quotas.
current number
Current usage against the limit, when known.
current_status string
The object's current status, for state conflicts such as `sandbox_not_running`.
upstream_status integer
The HTTP status the upstream returned (`upstream_error`, `action_output_invalid`).
step string
The failed step, as a step ID (routines), an index (`act`) or a path such as `beats/2/do/0` (render).
pack_error object
The error a pack's error mapping chose (`upstream_error` from pack actions).
code string REQUIRED
message string REQUIRED
retryable boolean REQUIRED
map object
Item counts for a map step.
total integer
succeeded integer
failed integer
running integer
waiting_for object
What a waiting step waits for.
signal string
until string (date-time)
next_cursor string | null REQUIRED
400 The request failed validation (`invalid_request`, `invalid_url`).
401 Missing, malformed, expired or revoked credentials (`unauthorized`).
403 Authenticated but not allowed (`forbidden`, `egress_denied`).
404 No such run in this project (`run_not_found`).
429 A rate, concurrency or quota limit applies (`rate_limited`, `concurrency_limited`, `quota_exceeded`).
500 Something failed inside B3OS (`internal`). Retry with backoff.
503 The node or the product is not available right now (`node_unavailable`, `product_unavailable`, `capacity_unavailable`). 
curl -X GET 'https://beta-api.b3os.org/v1/routines/runs/run_01m5t5fr06dx6azc42f4wbzf5s/steps' \  -H 'Authorization: Bearer YOUR_API_TOKEN'
const response = await fetch('https://beta-api.b3os.org/v1/routines/runs/run_01m5t5fr06dx6azc42f4wbzf5s/steps', {  method: 'GET',  headers: {      "Authorization": "Bearer YOUR_API_TOKEN"  }});const data = await response.json();console.log(data);
import requestsheaders = {    'Authorization': 'Bearer YOUR_API_TOKEN'}response = requests.get('https://beta-api.b3os.org/v1/routines/runs/run_01m5t5fr06dx6azc42f4wbzf5s/steps', headers=headers)print(response.json())
200 Response 
{  "object": "list",  "data": [    {      "id": "page",      "uses": "vision/scrape@1",      "status": "succeeded",      "attempt": 1,      "started_at": "2026-10-25T19:50:00.001Z",      "finished_at": "2026-10-25T19:50:00.092Z",      "duration_ms": 91.2,      "outputs": {        "markdown": "# Today"      }    }  ],  "next_cursor": null}
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