> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.pinnacle.sh/v-2/changelog/2026/3/29/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.pinnacle.sh/_mcp/server.

## Bulk Webhook Management

Webhook management just got simpler — attach and detach webhooks to multiple senders in a single API call.

### What's new?

**Bulk webhook attach/detach**

* **Attach webhooks** to multiple senders at once via [`POST /webhooks/attach`](/api-reference/webhooks/attach-webhook) — pass an array of phone numbers and/or RCS agent IDs
* **Detach webhooks** from multiple senders via [`POST /webhooks/detach`](/api-reference/webhooks/detach-webhook) — remove webhook routing in bulk
* Simplified `senders` field replaces the previous per-number configuration
* Detach now works regardless of webhook status

No more looping through numbers one at a time — configure all your webhook routing in a single request.

[View API reference →](/api-reference/webhooks)

> **Note**
>
> Have questions? Reach out to us - [founders@pinnacle.sh](mailto:founders@pinnacle.sh)

> One API for RCS, iMessage, MMS, and SMS. Build, test, and scale every channel — send your first message in minutes, not weeks.