Build WarmGTM Into Your GTM Stack.
Use the public API, MCP, webhooks, and native integrations to bring signal-first LinkedIn outreach into your agents, CRM, enrichment, email, and reporting workflows.
API and MCP access are available on every WarmGTM plan.
What can developers build with WarmGTM?
Developers can use WarmGTM to create prospect lists from social signals, launch and manage outreach campaigns, connect replies and outcomes to business systems, and let AI agents interact with approved WarmGTM capabilities through MCP.
Best for agencies, RevOps teams, GTM engineers, and technical founders building custom outbound workflows.
Build the workflow your GTM stack needs.
Use the WarmGTM public API to connect prospect data, campaigns, senders, replies, and workflow outcomes to your own systems.
Capability groups
- Prospects and lists
- Signals and source context
- Campaigns and senders
- Replies and outcomes
- Integrations and workflow events
Let your AI agents work with WarmGTM.
WarmGTM MCP gives compatible AI agents a structured way to use approved WarmGTM tools and data inside agent-led GTM workflows.
Example agent workflows
- Find prospects matching a defined signal and ICP
- Create or update a prospect list
- Prepare a campaign from qualified records
- Check campaign or reply status
- Route an outcome into another system
React the moment the workflow changes.
Use webhooks to send WarmGTM events into CRMs, Slack, reporting systems, and custom applications.
Event examples
- Prospect added or qualified
- Campaign started
- Connection accepted
- Reply received
- Positive reply identified
- Campaign completed
Native connections to the tools your team already uses.
Clay
Sync leads seamlessly with Clay
HubSpot
Sync leads seamlessly with HubSpot
SMTP
Streamline email integration using SMTP
Salesforce
Sync leads seamlessly with Salesforce
Apollo
Connect Apollo to sync contacts, enrich lead data, and automate outreach sequences.
Instantly
Connect Instantly to sync leads and automate email outreach campaigns.
Smartlead
Connect Smartlead to sync leads and automate email outreach campaigns.
Slack
Send real-time notifications to your Slack channels when events occur
Start with a workflow, not a blank API console.
Apollo -> WarmGTM
Bring a selected Apollo list into a WarmGTM signal or outreach workflow.
Clay -> WarmGTM
Enrich and qualify prospects before campaign entry.
WarmGTM -> Slack
Alert the right channel when a reply or qualified conversation arrives.
WarmGTM -> HubSpot or Salesforce
Create or update CRM records from campaign outcomes.
AI Agent -> WarmGTM MCP
Let an approved agent query and act through the WarmGTM MCP toolset.
API and MCP access on every plan.
The Outreach, AI Outreach, and Scale plans all include access to the public API and MCP.
Connect technical capabilities to commercial outcomes.
Agencies
Create client-specific prospecting workflows, custom reporting, and white-label operational connections.
Sales Teams
Connect social-signal outreach to CRM, Slack, enrichment, and email systems.
Founders
Use API or MCP to build lightweight outbound agents and custom founder workflows.
Start with a workflow, not a blank API console.
Developer navigation:
Each reference page includes
- Purpose and object definition
- Authentication requirements
- Parameters and request schema
- Response schema
- Errors
- Rate-limit information
- Copyable example
- Last updated date
Authentication and limits
Full reference documentation — authentication, token issuance, permission scopes, rate limits, pagination, error format, webhook security, and MCP permissions — is available to connected developers. Request access and we'll get you set up with credentials and the reference docs.
Frequently asked questions
Everything you need to know before getting started with WarmGTM.
Stop sending cold outreach.
Start conversations with people already showing intent.
No cold lists, no guesswork — just outreach timed to people who are already showing interest in what you do.
Catch Signals.Build Familiarity.Reach Out.