Build SMS, voice, and verification features without leaving Cursor 

The Sinch plugin for Cursor puts communication APIs directly into your agent’s hands.

If you build communication features for a living: SMS notifications, OTP (one-time password) flows, chatbots, webhook integrations, you know the loop: open the docs tab, copy your credentials, test in a separate tool, come back and write the code. Every switch costs you context. Enough of them and you lose your train of thought entirely. 

Today that loop gets shorter. Sinch is now available on the Cursor Marketplace, bringing Sinch’s communication APIs directly into your AI-native coding environment. 

The Sinch plugin for Cursor bundles the Sinch MCP server and 15 Skills into a single install. Once it’s set up, Cursor’s AI agent can call Sinch APIs on your behalf mid-task, not just surface them as autocomplete suggestions, but actually use them as tools. 

The 15 Sinch Skills cover the full Sinch portfolio across five areas: 

• Messaging: omnichannel messaging via the Conversation API, covering SMS, WhatsApp, RCS, MMS, Viber, Messenger, and more 

• Voice and connectivity: Elastic SIP Trunking provisioning, trunk setup, and PSTN (public switched telephone network) voice routing 

• Email: transactional and marketing email via Mailgun, including send, validate, optimize, and inspect 

• Verification and numbers: phone number verification, number lookup, and number management 

• Compliance and authentication: US 10DLC (10-digit long code) brand and campaign registration, plus API credential setup across all Sinch products 

There’s also a set of 9 Commands, quick in-editor actions for common tasks like sending a test message, listing active senders, or configuring your credentials, so you can start testing immediately, without writing a line of boilerplate. 

Sinch has had a presence in Cursor via the Open VSX extension for a while. The extension handles editor-level workflows, getting Sinch tooling into your sidebar. The plugin goes further: it gets Sinch into the agent’s hands. 

Think of them as complementary layers. The extension is your toolbox. The plugin is what the agent reaches for when it’s scaffolding a notification feature, configuring a webhook, or sending a test message mid-task. Together, they represent a complete Sinch presence from editor to AI agent. 

Cursor has over 1 million developers on its platform, and the demand they’re building for is real. Sinch research across 2,527 enterprise decision-makers found that 62% of enterprises already have AI communications agents in production, with 88% deployed within 12 months. The developers building those agents need communication infrastructure that works from day one. 

The Cursor Marketplace launched in February 2026 with a small, curated set of infrastructure-layer partners. Adding Sinch to that list puts communication APIs at the point where developers are making tooling decisions, not after the fact. 

For developers evaluating which APIs to build on, discoverability inside the IDE matters. And for existing Sinch customers who already use Cursor, the plugin means in-editor access to the APIs and configuration they work with every day.  

According to Rohan Shah from Cursor’s Product Partnerships and Marketplace team, the integration fills a gap in the marketplace. “Sinch brings production-grade communication infrastructure, right inside the agent loop. Developers building notification systems, verification flows, or conversational AI can now wire up Sinch APIs without leaving Cursor. That’s exactly the kind of integration our marketplace was built for.”  

Petter Bengtsson, SVP, AI & Ecosystem & Partnerships at Sinch, sees the Cursor listing as a natural extension of how developers already work. “Cursor is where a growing number of developers do their best work. Putting Sinch APIs directly into that environment means less time switching between tools and more time shipping features that actually reach customers.”   

The Cursor plugin is one part of how Sinch is building for the AI-first developer. Sinch is the communications infrastructure AI companies build on – reliable, developer-friendly and built to scale as fast as they do. Sinch powers over one trillion customer interactions annually across 190+ countries, so the infrastructure is proven before you need it. 

The Sinch plugin is available now on the Cursor Marketplace. 

Install it at cursor.com/marketplace/sinch. 

The plugin source is open and available on GitHub at sinch/sinch-plugins. For documentation, visit developers.sinch.com. 

Author: The Sinch team