Tagging non-root span in BrainTrust

braintrust_curl.sh

#!/bin/bash

# Braintrust Feedback API
# Set these environment variables:
# export PROJECT_ID="your-project-id"
# export SPAN_ID="your-span-id"
# export BRAINTRUST_API_KEY="your-api-key"

echo "Submitting feedback..."

curl -X POST \
  "https://api.braintrust.dev/v1/project_logs/${PROJECT_ID}/feedback" \
  -H "Authorization: Bearer ${BRAINTRUST_API_KEY}" \
  -H "Content-Type: application/json" \
  -d '{
    "feedback": [
      {
        "id": "'${SPAN_ID}'",
        "scores": {
          "How accurate is this score": 0.95
        },
        "comment": "GOOD: The data quality scoring accurately identified high-quality records with complete information."
      }
    ]
  }' \
  -k \
  -v

result_for_non_root_span.txt

< HTTP/2 400
< content-type: application/json; charset=utf-8
< content-length: 297
< x-amz-cf-pop: MXP63-P1
< date: Fri, 17 Oct 2025 07:17:38 GMT
< access-control-allow-credentials: true
< x-amzn-requestid: d48bed3f-c3f5-4c05-8c5d-4633921fdaf4
< x-amzn-remapped-content-length: 297
< x-bt-internal-trace-id: 68f1ed92000000005b762ed1f16c0324
< x-amz-apigw-id: SlIO8FdZIAMEYaw=
< vary: Origin, Accept-Encoding
< etag: W/"129-7uLoyciUXdz4JTkxUqI524FZCBc"
< access-control-expose-headers: x-bt-cursor,x-bt-found-existing,x-bt-query-plan
< x-amzn-trace-id: Root=1-68f1ed92-2ed48f603b402b55164ac7b0;Parent=36e41763691939ad;Sampled=0;Lineage=1:24be3d11:0
< via: 1.1 baa920f719f42b644a28367057e23f2a.cloudfront.net (CloudFront), 1.1 34d457763037634fb4577f449ab0e6c4.cloudfront.net (CloudFront)
< x-cache: Error from cloudfront
< x-amz-cf-pop: MXP53-P1
< x-amz-cf-id: SIKWlRPf6XObP-UH0fpbxoRDVZ_8uc6wcmbk25wrnJ-AIrLnMtheQw==
<
* Connection #0 to host api.braintrust.dev left intact
{"Code":"BadRequestError","Message":"Cannot specify 'tags' for non-root spans [[email protected]] [user_org=xxx] [timestamp=1760685458.708]","InternalTraceId":"68f1ed92000000005b762ed1f16c0324","Path":"/v1/project_logs/xxx/feedback","Service":"api"}

result_for_root_span.txt

< HTTP/2 200
< content-type: application/json; charset=utf-8
< content-length: 20
< x-amz-cf-pop: MXP63-P1
< date: Fri, 17 Oct 2025 07:16:58 GMT
< access-control-allow-credentials: true
< x-amzn-requestid: 7d953227-6315-46bf-953f-4955b7882bc6
< x-amzn-remapped-content-length: 20
< x-bt-internal-trace-id: 68f1ed67000000007fc266030aeff146
< x-amz-apigw-id: SlIIPEI2oAMEWFg=
< vary: Origin, Accept-Encoding
< etag: W/"14-Y53wuE/mmbSikKcT/WualL1N65U"
< access-control-expose-headers: x-bt-cursor,x-bt-found-existing,x-bt-query-plan
< x-amzn-trace-id: Root=1-68f1ed67-2ebaedfd7f6b5b2d043b935b;Parent=1fb0e39652dce6dc;Sampled=0;Lineage=1:24be3d11:0
< via: 1.1 baa920f719f42b644a28367057e23f2a.cloudfront.net (CloudFront), 1.1 208b6b3c2987a90f9564a1c5b99e2bba.cloudfront.net (CloudFront)
< x-cache: Miss from cloudfront
< x-amz-cf-pop: MXP53-P1
< x-amz-cf-id: mFE5rtnM5h_au6utuWCTHXM67-_qb8EOs2KHQHlq41xwm-frgT7Xig==
<
{"status":"success"}