Read a run's results
import requests
url = "https://app.langwatch.ai/api/v1/instant-evals/{id}/results"
headers = {"X-Auth-Token": "<api-key>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {'X-Auth-Token': '<api-key>'}};
fetch('https://app.langwatch.ai/api/v1/instant-evals/{id}/results', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));curl --request GET \
--url https://app.langwatch.ai/api/v1/instant-evals/{id}/results \
--header 'X-Auth-Token: <api-key>'{
"judgments": [
{
"traceId": "<string>",
"questionId": "<string>",
"threadId": "<string>",
"spanId": "<string>",
"kind": "<string>",
"status": "judged",
"passed": true,
"score": 123,
"label": "<string>",
"probability": 123,
"probabilities": {},
"error": "<string>",
"occurredAt": "<string>"
}
],
"nextCursor": "<string>"
}Instant Evals
Read a run's results
Read the run’s judgements, one page at a time. Pass the cursor a page answers with to read the page after it; the last page carries no cursor, and no judgement is ever carried by two pages. Narrow the page with questionId, matched and status.
GET
/
api
/
v1
/
instant-evals
/
{id}
/
results
Read a run's results
import requests
url = "https://app.langwatch.ai/api/v1/instant-evals/{id}/results"
headers = {"X-Auth-Token": "<api-key>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {'X-Auth-Token': '<api-key>'}};
fetch('https://app.langwatch.ai/api/v1/instant-evals/{id}/results', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));curl --request GET \
--url https://app.langwatch.ai/api/v1/instant-evals/{id}/results \
--header 'X-Auth-Token: <api-key>'{
"judgments": [
{
"traceId": "<string>",
"questionId": "<string>",
"threadId": "<string>",
"spanId": "<string>",
"kind": "<string>",
"status": "judged",
"passed": true,
"score": 123,
"label": "<string>",
"probability": 123,
"probabilities": {},
"error": "<string>",
"occurredAt": "<string>"
}
],
"nextCursor": "<string>"
}Authorizations
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.
Path Parameters
The run id.
Minimum string length:
1Query Parameters
Only this question's judgements.
Minimum string length:
1Only judgements that matched, or only those that did not. Omit for both.
Available options:
true, 1, yes, false, 0, no Only judgements in this state.
Available options:
judged, skipped, failed Judgements per page, at most one thousand.
Required range:
1 <= x <= 1000The cursor the previous page answered with.
Required string length:
1 - 500Last modified on September 19, 2026
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