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GET
Python

Authorizations

X-Auth-Token
string
header
required

Project API key for sending traces and accessing project-scoped resources. Format: sk-lw-... (no underscore). Obtain one by creating a project via the Admin API or the LangWatch UI.

Query Parameters

limit
integer
default:20

Runs to list, at most one hundred.

Required range: 1 <= x <= 100
before
string<date-time>

List runs accepted strictly before this instant, as an ISO 8601 timestamp. Half of the list's cursor: pass beforeId with it.

beforeId
string

The id of the last run of the previous page. Two runs can share an instant, so this is what keeps a page from skipping the others written in the same millisecond.

Required string length: 1 - 200

Response

200 - application/json

Success

runs
object[]
required

The project's runs, newest first.

Last modified on September 19, 2026