---

name: tracking-cloud-jobs description: Use when an extraction job has been submitted and the result needs to be retrieved. Covers GET /v1/jobs/{id}, polling cadence with exponential backoff, terminal status detection, and webhook delivery (signature verification, retry semantics).

Tracking cloud jobs

Every POST /v1/extract returns a job ID. The actual result arrives one of two ways:

1. Polling — GET /v1/jobs/{id} until status is terminal.
2. Webhook — a callback you registered at submit time fires when the job is done.

Pick polling when latency tolerance is short and you control the caller. Pick webhooks when you can't block, or when the job runs minutes long.

Endpoint

GET https://api.kreuzberg.dev/v1/jobs/{id}
Authorization: Bearer $KREUZBERG_API_KEY

Accepts both extraction job IDs (from job_ids) and crawl job IDs (from crawl_job_ids). The response schema is JobLookupResponse, a union of JobResponse (extraction) and CrawlJobResponse (crawl).

Response (200)

{
  "id": "550e8400-e29b-41d4-a716-446655440000",
  "filename": "invoice.pdf",
  "status": "completed",
  "created_at": "2025-12-21T10:00:00Z",
  "processing_time_ms": 1234,
  "result": {
    "content": "Invoice total: $1,234.56",
    "mime_type": "text/markdown",
    "tables": [],
    "images": [],
    "metadata": { "title": "Invoice #12345" }
  }
}

result is null until the job reaches a terminal state.

Status lifecycle

awaiting_upload  →  pending  →  processing  →  chunking  →  aggregating  →  completed
                                                                          →  partial_success
                                                                          →  failed
                                                          (any time)      →  cancelled

Terminal statuses — stop polling when status is one of:

• completed — result is populated.
• partial_success — result is populated; check result.metadata.warnings for the partial cause.
• failed — result is null; an error was logged server-side.
• cancelled — result is null; the job was cancelled before completion.

Polling cadence

Use exponential backoff capped at 30 seconds. Most extractions finish in under 5 seconds; large PDFs with OCR may take minutes.

#!/usr/bin/env bash
set -euo pipefail
JOB_ID="$1"
delay=1
while true; do
  body=$(curl -fsS \
    -H "Authorization: Bearer $KREUZBERG_API_KEY" \
    "https://api.kreuzberg.dev/v1/jobs/$JOB_ID")
  status=$(echo "$body" | jq -r .status)
  case "$status" in
    completed|partial_success|failed|cancelled)
      echo "$body" | jq .; exit 0;;
  esac
  sleep "$delay"
  delay=$(( delay * 2 > 30 ? 30 : delay * 2 ))
done

TypeScript SDK

The SDK does the backoff for you:

import { KreuzbergCloud } from "@kreuzberg/cloud";
const client = new KreuzbergCloud({ apiKey: process.env.KREUZBERG_API_KEY! });

const result = await client.waitForJob(jobId, {
  timeoutMs: 5 * 60_000,
  pollIntervalMs: 1000, // starting interval; backs off internally
});
console.log(result.status, result.result?.content);

Python SDK

from kreuzberg_cloud import KreuzbergCloud

with KreuzbergCloud(api_key=...) as client:
    job = client.wait_for_job(job_id, timeout=300)
    print(job.status, job.result and job.result.content)

Webhooks

Register a webhook at submit time by including a webhook block in the POST /v1/extract body:

{
  "webhook": {
    "url": "https://hooks.example.com/kreuzberg",
    "secret": "32-byte-shared-secret",
    "metadata": { "request_id": "abc123" }
  }
}

When the job reaches a terminal status, the server POSTs the full JobResponse (or CrawlJobResponse) to url. The metadata you supplied is echoed back inside the payload.

Signature verification

The server signs each webhook delivery with an HMAC computed over the raw JSON body using secret. The signature header name and exact algorithm (SHA-256, hex-encoded) are documented at https://docs.kreuzberg.cloud; treat them as the source of truth — do not hard-code header names from this skill.

Verification pattern (Python, illustrative):

import hmac, hashlib
def verify(body: bytes, signature_hex: str, secret: str) -> bool:
    expected = hmac.new(secret.encode(), body, hashlib.sha256).hexdigest()
    return hmac.compare_digest(expected, signature_hex)

Reject any delivery whose signature does not match. Always pass secret to POST /v1/extract for production — unsigned webhooks can be forged.

Retry semantics

Webhook deliveries retry on non-2xx responses with exponential backoff over several hours. Keep your handler idempotent — the same job_id may be delivered more than once on transient failures.

When to prefer webhooks vs polling

Prefer webhooks	Prefer polling
You can run an HTTP server	CLI / one-shot scripts
Jobs run minutes long	Jobs finish in seconds
Batch of many jobs	A single foreground job
Caller can't block	Caller is already blocking
You want exactly one delivery per terminal state	You want strict consistency in your own loop

Crawl jobs

GET /v1/jobs/{crawl_job_id} returns CrawlJobResponse (different shape from JobResponse). The crawl job lists each per-document job_id that was spawned; iterate through those to fetch individual extraction results.

Errors

Status	Meaning	Action
400	Malformed UUID	Verify the ID came from job_ids / crawl_job_ids.
401	Bad API key	Check Authorization header.
404	Job not found	Wrong project key, or job purged.
503	DB unavailable	Retry with backoff.