{"version":"2.1.228","anchor":"bundled-sdk-client-reads-a-webhook-signing-key-from-the-envi","canonical_anchor":"bundled-sdk-client-reads-a-webhook-signing-key-from-the-envi","heading":"Bundled SDK client reads a webhook signing key from the environment","tier":"use","area":"SDK","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.228\/e\/bundled-sdk-client-reads-a-webhook-signing-key-from-the-envi","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.228","markdown":"### Bundled SDK client reads a webhook signing key from the environment\n\nThe bundled client now reads a webhook signing key from ANTHROPIC_WEBHOOK_SIGNING_KEY.\n\n**What**\n\nThe bundled Anthropic client constructor now takes a `webhookKey` option that defaults to the `ANTHROPIC_WEBHOOK_SIGNING_KEY` environment variable, or null when it is unset. Previously that variable appeared only in bundled documentation and no client code read it.\n\n**Details**\n\n- Set `ANTHROPIC_WEBHOOK_SIGNING_KEY` to have it picked up automatically; passing `webhookKey` explicitly overrides it.\n\n**Evidence**\n\n`ANTHROPIC_WEBHOOK_SIGNING_KEY`\n\n- Area: SDK\n- Names: `ANTHROPIC_WEBHOOK_SIGNING_KEY`, `webhookKey`\n- Tier: Use it now\n- Useful: 2\/5\n- Signal: 3\/5"}