GTM Tech Stack Signal Enrichment

GTM tech stack detection for Clay. Flat boolean output. No JSON parsing required.

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What's New

• Pricing reduced. $0.015 per result, down from $0.07. No subscription, no contract.
• Free tier added. Free Apify-plan users get 15 results per calendar month (resets monthly, counts only successful detections); paid plans are unlimited. Upgrade: https://apify.com/pricing.
• Clay table template and function available. Pre-built table plus a reusable Clay Function. Open the template →
• Detection is actually running. Prior versions shipped with a base Docker image that had no Chromium binary. Every run in production was silently failing at chromium.launch() and returning all-false. v0.2.1 switches the base image to apify/actor-node-playwright-chrome:20 which includes Chromium at the path Playwright expects.
• Detection errors now surface in the output. When the browser fails to launch or every fingerprint lookup errors out, detection_error is set to true and detection_error_reason carries the specific failure (for example timeout, error: net::ERR_...). Production failures no longer hide behind a row of false booleans.
• Input field rename. Primary field is now domain to match Actor 1. Legacy company_domain and url are still accepted for backward compatibility. Existing Clay tables keep working.
• Apollo fingerprint updated. New cookie patterns (dwnjrn, zp__initial_landing_page) match what Apollo's current marketing site actually sets.
• Ground truth regression test. tests/ground_truth.js runs the actor against six domains whose marketing sites carry detectable fingerprints. Five of six must pass before any release push.

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Overview

Takes a company domain or URL, renders the page with headless Chromium, and returns a single flat row with boolean flags for each GTM tool detected. Drop it into a Clay HTTP Request column and filter on gtm_tool_count > 0 to qualify your list instantly.

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Who this is for

• Clay users building outbound qualification tables who need GTM tool flags without writing formula columns
• GTM agencies enriching lead lists with tech stack signals at scale
• RevOps teams segmenting accounts by CRM, sequencer, and marketing automation usage

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Input

Field	Type	Required	Notes
domain	String	Yes	Bare company domain. Example: stripe.com. No https://, no www., no trailing slash.
company_domain	String	No	Deprecated. Still accepted for backward compatibility with existing Clay tables.
url	String	No	Deprecated. Still accepted.
crawl_additional_pages	Boolean	No	Default true. Set to false for homepage-only runs.

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Output

Every field is present in every row. No nested JSON. Ready to use as a Clay enrichment column.

Field	Type	Description
domain	String	Normalized domain from input (new primary key)
company_domain	String	Same value as domain. Present for backward compatibility.
crm_detected	String	hubspot / salesforce / marketo / pardot / none
seq_tool_detected	String	outreach / salesloft / apollo / instantly / intercom / drift / none
uses_hubspot	Boolean	HubSpot CRM or Marketing Hub detected
uses_salesforce	Boolean	Salesforce detected
uses_clay	Boolean	Clay detected
uses_apollo	Boolean	Apollo.io detected
uses_outreach	Boolean	Outreach detected
uses_gong	Boolean	Gong detected
uses_zoominfo	Boolean	ZoomInfo detected
uses_drift	Boolean	Drift detected
uses_intercom	Boolean	Intercom detected
uses_marketo	Boolean	Marketo detected
marketing_automation_detected	String	marketo / pardot / hubspot / none
gtm_tool_count	Integer	Count of true boolean fields
tech_stack_signal	String	high / medium / low
detection_error	Boolean	True if every fingerprint call returned a browser error or timeout
detection_error_reason	String	Specific error reason when detection_error is true (for example timeout, error: ENOENT). Null otherwise.
run_date	ISO Date	Timestamp of the run

Sample output:

{
  "domain": "hubspot.com",
  "company_domain": "hubspot.com",
  "crm_detected": "hubspot",
  "seq_tool_detected": "none",
  "uses_hubspot": true,
  "uses_salesforce": false,
  "uses_clay": false,
  "uses_apollo": false,
  "uses_outreach": false,
  "uses_gong": false,
  "uses_zoominfo": false,
  "uses_drift": false,
  "uses_intercom": false,
  "uses_marketo": false,
  "marketing_automation_detected": "hubspot",
  "gtm_tool_count": 1,
  "tech_stack_signal": "medium",
  "detection_error": false,
  "detection_error_reason": null,
  "run_date": "2026-04-06T09:03:47.744Z"
}

Clay gate column: gtm_tool_count > 0

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How signal strength is derived

Strength	Criteria
high	CRM detected AND sequencer detected AND 3 or more total tools
medium	CRM or sequencer detected, 1 to 2 total tools
low	At least 1 tool detected, no CRM and no sequencer

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Clay Table Template

A pre-built Clay table template is available with the enrichment column, formula columns, and views ready to use.

Open the Clay template →

The template includes:

• A Run Apify Actor enrichment column wired to mambalabs/gtm-tech-stack-signal-scraper
• Eight formula columns for CRM, sequencer, and tool detection flags
• A qualifier column for downstream gating

A reusable Clay Function is also available: Open the function →. Use the function when you want updates to the detection logic to propagate automatically. Use the template when you want a static copy to modify.

Manual setup

One flat row per domain, Clay-ready. Add this actor as a Run Apify Actor enrichment column in any Clay table with a company_domain column.

Input mapping:

• Apify Actor: mambalabs/gtm-tech-stack-signal-scraper
• Input Data: {"domain": "[company_domain pill]"}
• Run condition: company_domain is not empty

Output fields map directly to Clay formula columns using dot notation:

• {{actor_output}}?.uses_hubspot
• {{actor_output}}?.uses_marketo
• {{actor_output}}?.uses_intercom
• {{actor_output}}?.crm_detected
• {{actor_output}}?.seq_tool_detected
• {{actor_output}}?.gtm_tool_count
• {{actor_output}}?.tech_stack_signal
• {{actor_output}}?.detection_error

Gate downstream tables on gtm_tool_count > 0 or tech_stack_signal = high to focus on companies running real GTM infrastructure.

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Pricing

$0.015 per result. Pay per event, billed per domain processed. No subscription, no seat license, no contract.

Volume	Cost
100 domains	$1.50
1,000 domains	$15.00
10,000 domains	$150.00

We recently reduced pricing across the Mamba Labs actor suite to bring more value to GTM teams running enrichment at scale.

Free tier vs paid usage

Plan	Limit
Free Apify plan	15 results per calendar month (resets on the 1st)
Any paid Apify plan	Unlimited results, no cap

Free-plan usage is counted cumulatively across all of your runs in a month, not per run, so each single-domain run draws from the same monthly allowance. Only successful detections count against the allowance; a run that errors out (bot-block, timeout) does not consume a result. How it behaves when you hit the limit:

• Within the monthly allowance: the domain is detected and returned normally.
• Already at the limit: the run exits immediately with no result and an upgrade message in the run status, before any browser cost is incurred.

Upgrade to any paid Apify plan for unlimited detection: https://apify.com/pricing. Paid-plan runs are never capped and incur no usage tracking.

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Known Limitations

Bot-protected domains may return negative results. Sites fronted by Cloudflare Enterprise, Akamai Bot Manager, or PerimeterX often serve a challenge page or stub to headless Chromium requests from a datacenter IP. The detector navigates successfully, captures an empty stub HTML, and returns all-false with detection_error: false (no error was actually thrown, the browser got a valid 200 response). Known examples include salesforce.com, zoominfo.com, and marketo.com. If you need those, flag the rows for manual review. A stealth-mode build with residential proxies is a candidate for a future coverage-expansion release.

Backend-only tools with no web pixel are out of scope. Clay, Salesloft, Instantly, Lemlist, and server-side Segment leave no public client-side signal on a customer's website. The fingerprints file marks these with detectable: false by design. Do not expect uses_clay: true even on companies you know use Clay. This is documented, not a bug.

Vendor marketing sites reflect their marketing stack, not their product. outreach.io runs Marketo on its marketing site. apollo.io runs HubSpot plus Intercom. gong.io runs Marketo. drift.com runs Marketo post-Salesloft-acquisition. The actor reports what the page actually uses, which is the correct outbound-qualification signal. "This company uses Outreach" is not inferable from "outreach.io's marketing site loads Marketo scripts," and we do not hard-code self-domain shortcuts.

Tools loaded only behind authenticated pages will not be detected. The actor crawls the homepage and up to two public pages (pricing, product). Dashboards, customer portals, and auth-gated paths are unreachable.

Heavily obfuscated CDN routing can reduce script src accuracy. Cookie names and JS global variables are checked as primary signals to partially compensate, but companies that fully mask outbound requests through Cloudflare Workers or Fastly with custom domains may still slip through.

LinkedIn Sales Navigator is not detectable and was removed in v0.2.0.

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Issues and Feature Requests

Found a bug or want to request a feature? Open an issue in the Issues tab above. Response time: typically within 48 hours.

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Related Actors

All Mamba Labs actors output flat, Clay-ready JSON. Use them together or individually.

• GTM Hiring Signal Scraper, $0.05/result. Detects GTM hiring activity on Greenhouse, Lever, and Ashby. Returns role counts, signal tags, and velocity tracking.
• GTM Signals Aggregator, $0.09/result. Runs hiring and tech stack detection in one call. Returns a composite score, recommended action, and plain-English summary.
• Job Board Keyword Signal Scanner, $0.05/result. Scans Greenhouse, Lever, Ashby, Workday, and Rippling for any role category you define. GTM, Engineering, Finance, or custom keywords.
• Domain to LinkedIn URL Resolver, $0.006/result. Resolves company domains to LinkedIn URLs with confidence scoring, firmographics, and social links in one flat row.
• ICP Fit Scorer, $0.05/result. Scores companies against your ICP using weighted signals. Returns icp_score 0-100, icp_tier A-D, and per-signal breakdown.

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Use with MCP (AI Agents)

This actor is callable as a tool over MCP (Model Context Protocol) by AI clients like Claude Desktop, Cursor, VS Code (GitHub Copilot), Windsurf, and any other MCP-compatible client. Apify hosts the MCP server at mcp.apify.com, so no custom server code is needed.

What this actor does in an MCP context

Give an AI agent a company domain and it returns a flat row of GTM tech stack signals: which CRM, sequencer, and marketing automation tools the company runs on its marketing site. Useful for outbound qualification, account research, and ICP scoring inside an agent loop.

Example prompts:

• "What CRM does stripe.com use?"
• "Does notion.so run HubSpot or Salesforce?"
• "Detect the marketing automation stack on shopify.com and tell me if they use Marketo or Pardot."

Supported MCP clients

Claude Desktop, Cursor, VS Code (GitHub Copilot), Windsurf, and any MCP-compatible client.

Setup: Hosted server (recommended)

Add this entry to your MCP client config. The OAuth variant prompts you to authorize on first connect, so no token sits in your config file.

OAuth (recommended):

{
  "mcpServers": {
    "mamba-labs-tech-stack": {
      "url": "https://mcp.apify.com?tools=mambalabs/gtm-tech-stack-signal-scraper"
    }
  }
}

Bearer token:

{
  "mcpServers": {
    "mamba-labs-tech-stack": {
      "url": "https://mcp.apify.com?tools=mambalabs/gtm-tech-stack-signal-scraper",
      "headers": {
        "Authorization": "Bearer YOUR_APIFY_TOKEN"
      }
    }
  }
}

Setup: Full Mamba Labs GTM Suite

Load all 6 Mamba Labs GTM actors as tools in a single MCP server entry.

OAuth:

{
  "mcpServers": {
    "mamba-labs-gtm-suite": {
      "url": "https://mcp.apify.com?tools=mambalabs/gtm-hiring-signal-scraper,mambalabs/gtm-tech-stack-signal-scraper,mambalabs/gtm-signals-aggregator,mambalabs/job-board-keyword-signal-scanner,mambalabs/domain-to-linkedin-url-resolver,mambalabs/icp-fit-scorer"
    }
  }
}

Bearer token:

{
  "mcpServers": {
    "mamba-labs-gtm-suite": {
      "url": "https://mcp.apify.com?tools=mambalabs/gtm-hiring-signal-scraper,mambalabs/gtm-tech-stack-signal-scraper,mambalabs/gtm-signals-aggregator,mambalabs/job-board-keyword-signal-scanner,mambalabs/domain-to-linkedin-url-resolver,mambalabs/icp-fit-scorer",
      "headers": {
        "Authorization": "Bearer YOUR_APIFY_TOKEN"
      }
    }
  }
}

Setup: Local server (for development and testing)

npx @apify/actors-mcp-server --tools mambalabs/gtm-tech-stack-signal-scraper

Full suite:

npx @apify/actors-mcp-server --tools mambalabs/gtm-hiring-signal-scraper,mambalabs/gtm-tech-stack-signal-scraper,mambalabs/gtm-signals-aggregator,mambalabs/job-board-keyword-signal-scanner,mambalabs/domain-to-linkedin-url-resolver,mambalabs/icp-fit-scorer

What the output looks like

One flat JSON row per domain, well under 2KB. Every field is always present. Key fields:

• domain: normalized input domain
• crm_detected: hubspot, salesforce, marketo, pardot, or none
• seq_tool_detected: outreach, salesloft, apollo, instantly, intercom, drift, or none
• marketing_automation_detected: marketo, pardot, hubspot, or none
• gtm_tool_count: integer count of detected tools
• tech_stack_signal: high, medium, or low
• detection_error and detection_error_reason: surface real browser failures so agents do not treat empty results as confirmed negatives
• Per-tool booleans: uses_hubspot, uses_salesforce, uses_apollo, uses_outreach, uses_gong, uses_zoominfo, uses_drift, uses_intercom, uses_marketo, uses_clay

Billing

MCP runs use the same pay-per-event pricing as direct API or Console runs. Each successful result costs $0.015.

Notes

This actor uses headless Chromium on Apify infrastructure. The MCP client does not need to run a browser locally. Typical run time 5 to 15 seconds.

Part of the Mamba Labs GTM Suite

This actor is part of the Mamba Labs GTM Suite. See all 6 actors at https://apify.com/mambalabs

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Built by Mamba Labs