Changelog

Conversations, Reactions & More

New conversation threading, message reactions, validation endpoints, URL shortening, and an expanded MCP server.

What’s new?

Conversations API

Messages between a sender and recipient are now grouped into conversation threads — the backbone of inbox-style experiences.

• List conversations filtered by brand, campaign, sender, or receiver
• Get a conversation by ID or phone number pair
• List messages within a conversation with pagination
• Update conversation notes for internal tracking

View API reference →

Message reactions

React to messages with emoji using POST /messages/react. Messages support multiple reactions.

Message validation

Validate SMS, MMS, and RCS messages before sending — check segment count, encoding, unsupported files, and estimated cost without consuming credits.

• POST /messages/validate/sms | POST /messages/validate/mms | POST /messages/validate/rcs

URL shortener

Create tracked short links (pncl.to) with click analytics, configurable expiration, and updatable destinations.

• POST /tools/url | GET /tools/url/{linkId}

MCP Server — 89 tools

The Pinnacle MCP server now exposes 89 tools (up from 71 at launch), covering conversations, webhooks, test agents, and more.