Connect DomainSignal to Your Outbound Stack

Instantly.ai

Webhook Auto-Tagger

POST each new Instantly lead to DomainSignal. We probe the domain at the edge and write ds_provider, ds_link_safety, ds_sso_vendor, and ds_rec_sender back onto the lead—Proofpoint defense without a spreadsheet.

Smartlead.ai

Two-way tag sync

Webhook in, custom_fields out. Route Microsoft 365 targets to Outlook senders and tag gateway rows for plain-text sequences before they hit a shared rotator.

Clay

1-click enrichment template

Duplicate the shared Clay table and map Domain → HTTP GET /v1/probe. Credits never expire; run the book of business when the campaign is ready.

n8n

Production deliverability blueprint

Import the JSON workflow: enrich domains, branch on provider, and stop gateway detonations before the sequencer fires.

Make.com

Generic webhook integration

POST any JSON blob to /v1/webhook/generic?key=YOUR_KEY. We recursively find email, domain, website, or company_domain and return the full probe JSON for downstream mapping.

Cursor & Windsurf

Native MCP tool

Add the DomainSignal stdio server to .cursor/mcp.json. Import /openapi.json if you want HTTP tool-calling without a local process.

Claude Code & Desktop

Stdio MCP server

Same mcpServers.domainsignal block in claude_desktop_config.json. Bearer key lives in DOMAINSIGNAL_API_KEY.

Terminal CLI

npx domainsignal

One-line domain probe from any shell. Pair with the batch endpoint when you need up to 100 domains per request.

npx --yes domainsignal stripe.com

Agencies

White-Label Client Deliverability Audit

Fill client and agency names, load a 5,000-lead sample, print a one-page PDF. Hidden chrome in print CSS.

REST

Batch Edge REST API

POST /v1/probe/batch with up to 100 domains. One credit per domain, atomic debit, community key accepted.