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2 pages for anthropic_webhook_signing_key.
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spawn.sh: called once per claimed work item
Claude Developer Platform · in the page
managed-agents/self-hosted-sandboxes
…`pip install "anthropic[webhooks]"`. ```bash export ANTHROPIC_WEBHOOK_SIGNING_KEY="whsec_..." ``` </Step> <Step title="Implement the webhook handler"> `E…
webhooks
Claude Developer Platform · in the page
managed-agents/webhooks
…signature is invalid or the payload is more than 5 minutes old. Set `ANTHROPIC_WEBHOOK_SIGNING_KEY` to the `whsec_`-prefixed secret shown at endpoint creation. <CodeGroup> ```python Python from…