Vercel · Logstreem

Vercel

A Log Drain that forwards build and runtime logs from a project.

Vercel Log Drains POST NDJSON to any HTTPS endpoint. Point one at your ingest URL.

cURL

curl -X POST "https://api.vercel.com/v2/integrations/log-drains" \
  -H "Authorization: Bearer $VERCEL_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "logstreem",
    "type": "json",
    "url": "https://api.logstreem.com/v1/ingest/vercel-prod",
    "headers": { "Authorization": "Bearer '"$LOGSTREEM_TOKEN"'" },
    "projectIds": ["prj_abc123"],
    "sources": ["lambda", "static", "edge", "build"],
    "deliveryFormat": "ndjson"
  }'

Useful fields

Field	Meaning
`source`	`lambda`, `edge`, `static` or `build`
`deploymentId`	Which deployment produced it — the join key for a regression
`requestId`	One request across edge and lambda
`statusCode`	HTTP status
`proxy.region`	The edge region that served it

Errors by deployment after a release

read top to bottom

1['vercel-prod']
2| where _time > ago(2h) and statusCode >= 500
3| summarize errors = count() by deploymentId, ['proxy.region']
4| order by errors desc

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