Marketing & Social Media · Onesignal rest api + Claude
OneSignal REST API MCP with Claude: Automate Push, Email and SMS Messaging
The short answer
Claude works with OneSignal through the Model Context Protocol (MCP), an open standard that lets Claude securely use other software. Once connected with an API key, Claude can send notifications, manage user segments and automate subscription workflows, all from plain-English instructions, with permissions your team controls.
What is Onesignal rest api?
OneSignal is a cross-channel messaging platform. Businesses use it to reach their users through push notifications, email and SMS from one unified interface. Its REST API lets developers and operations teams send messages, manage users, and change app settings in code rather than by hand. Marketing, product, and customer engagement teams typically use it to keep app and website audiences informed and active.
How Claude connects to Onesignal rest api through MCP
The Model Context Protocol, or MCP, is an open standard that acts like a universal adapter between Claude and other software. It lets Claude use a tool such as OneSignal in a secure, controlled way, reading information and taking actions with permissions your organisation sets. You do not need to write code for each request. You describe what you need in plain English.
Once connected, Claude can typically read user segments and subscription details, draft and send push, email or SMS messages, and help set up subscription workflows. For example, a marketing manager could ask Claude to message everyone who viewed a product but did not buy it in the past week, and Claude would prepare the audience and content.
Permissions and approvals keep people in charge. We connect using your OneSignal API key with least-privilege access, so Claude can only do what you allow. Consequential actions, such as messaging a large audience, can require a person to review and approve before anything goes out. Every action is logged so your team can see what happened and when.
What you can automate
Re-engaging lapsed app users
Ask Claude to identify users who have not opened the app for a set period and prepare a push notification or email to bring them back. A marketing lead reviews the audience and wording, then approves the send. This keeps campaigns timely without manual list building.
Segment building in plain English
Operations teams can describe an audience, such as customers in a particular region who subscribed to a newsletter last month. Claude translates this into a user segment in OneSignal, saving time for analysts who would otherwise build filters by hand.
Onboarding message sequences
Product teams can set up welcome messages that follow a new user's first actions. Claude helps draft the sequence and confirms the subscription triggers, so new users receive timely guidance across push and email.
Subscription and preference management
Customer support or IT teams can ask Claude to check a user's subscription status or update their channel preferences after a request. This helps keep communication respectful of opt-outs and reduces back-and-forth with support tickets.
Cross-channel alerts for time-sensitive news
When a service update or event needs wide notice, Claude can prepare the same message for push, email and SMS from one request. Teams approve the content once, and the message reaches users on the channels they prefer.
An end-to-end workflow: Abandoned-cart recovery for an online retailer
TriggerA customer leaves items in their cart for two hours without checking out.
The retailer's e-commerce system flags the abandoned cart and passes the customer's ID to Claude.
Claude checks the customer's OneSignal subscriptions and preferences to see which channels are allowed.
Claude drafts a short reminder message and suggests a push notification first, with email as a follow-up.
A marketing manager reviews the draft and approves it in the approval queue.
OneSignal sends the approved message, and the outcome is recorded in the retailer's CRM alongside the customer's record.
OutcomeTypically, a timely, consent-respecting reminder helps some customers complete their purchase, while the CRM keeps a clear record of every message sent.
How we set it up
Free automation audit
We review your current messaging, audiences and campaign calendar to find the workflows worth automating with OneSignal and Claude.
Secure API key connection
We connect Claude to OneSignal using your API key, configured with least-privilege access so only the permitted actions are available.
Workflow design
We design the end-to-end flow across OneSignal and your other systems, such as Microsoft 365, CRM or ticketing, with approval points for consequential sends.
Testing against real cases
We test the workflows using past campaigns and real user scenarios, checking audiences, timing and message content before anything goes live.
Launch, monitoring and training
We launch with monitoring and audit logs in place, then train your marketing and operations teams to use Claude confidently.
Who benefits
- Marketing managers
- Build audiences and draft campaigns faster, with human approval before each send.
- Product managers
- Set up onboarding and engagement sequences without waiting on developer time for every change.
- Customer support leads
- Check subscription status and honour preference changes quickly and accurately.
- IT and operations heads
- Govern API access with least-privilege permissions and maintain clear audit logs.
Security and control
- Connect using an API key with the minimum permissions needed for each workflow.
- Require human approval before large or sensitive messages are sent.
- Respect user opt-outs and channel preferences in every workflow.
- Keep full audit logs of what Claude prepared, what was approved, and what was sent.
- Review and rotate API keys on a regular schedule as part of your security practice.
For teams in the US, UK, India and the Middle East
Organisations in the United States and the United Kingdom can host their Claude applications in those regions to align with local data protection expectations. Businesses in India must consider the Digital Personal Data Protection Act, 2023, when handling user contact details. Organisations in the UAE and Saudi Arabia should meet their own data protection laws. We choose the hosting region for each project to help meet these requirements, though compliance remains your responsibility and depends on your specific obligations.
Learn more about Claude and MCP
Anthropic's AI model and assistant.
Secure links between Claude and business tools.
How engineers build and change software with Claude.
Hosted agents that run multi-step work.
The open standard Claude uses to connect to tools.
Frequently asked questions
What does the OneSignal REST API MCP server do?
It gives Claude a secure, standardised way to use the OneSignal REST API. Claude can read information such as user segments and subscription details, and take approved actions such as preparing and sending messages. Permissions are set by your organisation, so Claude only reaches what you allow.
Is connecting Claude to OneSignal secure?
Security depends on how the connection is configured. We use your OneSignal API key with least-privilege access, keep audit logs of every action, and can require human approval before consequential sends. API keys should also be stored securely and rotated regularly.
What can Claude do with OneSignal once connected?
Typically, Claude can help build user segments, draft push, email and SMS messages, send approved notifications, check subscription status and help manage subscription workflows. The exact actions depend on the permissions you grant during setup.
How long does setup take?
Timing depends on how many workflows you want and how complex your audiences are. A focused setup for a few workflows often takes a few weeks, including testing and training. We confirm the timeline during the free automation audit.
Which permissions or access are needed?
You need a OneSignal API key with access to the apps and actions you want Claude to use. We recommend creating a key with the minimum permissions required for each workflow. We will confirm the right access level for your OneSignal setup during the audit.