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Tech Stack Signal Detector

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Detects which GTM tools a company uses on their website. Returns CRM, sequencer, and marketing automation flags as a flat Clay-ready row. Covers HubSpot, Salesforce, Marketo, Apollo, Outreach, and more. No JSON parsing required. MCP-ready for Claude Desktop, Cursor, and AI agent workflows.

Pricing

from $12.80 / 1,000 results

Rating

0.0

(0)

Developer

Mamba Labs

Actor stats

Bookmarked

Total users

Monthly active users

7 days ago

Last modified

Changelog

All notable changes to this actor are documented here.

[0.2.1] - 2026-04-20

Fixed

Detection was returning zero for every domain in production. Root cause: the auto-generated Dockerfile used apify/actor-node:20 as the base image, which does not ship a Chromium binary. playwright-chromium silently failed at chromium.launch() with ENOENT on chrome-headless-shell. The detector's internal catch swallowed the error and returned an all-false fingerprint array, and main.js wrote detection_error: false because its own try/catch never fired. Shipped a custom .actor/Dockerfile using apify/actor-node-playwright-chrome:20 as the base, which includes Chromium preinstalled at the path Playwright expects.
Detection error surfacing. main.js now inspects the detector's return value. If every entry's reason is timeout or starts with error:, detection_error is set to true and the specific detection_error_reason is included in the output. This exposes container-level failures in the dataset row instead of hiding them behind a row of false booleans.

Changed

Input field renamed to domain. company_domain and url still accepted for backward compatibility with existing Clay tables and API callers. Input schema marks domain as required, with the two legacy fields carried as deprecated optional fields. Matches Actor 1's input shape.
Apollo fingerprint updated. Added cookie patterns for dwnjrn and zp__initial_landing_page, which are the cookies Apollo's own marketing site currently sets. The original _auid pattern is preserved.
Output now includes both domain and company_domain (same value) for forward and backward compatibility with Clay templates.

Added

Ground truth regression test at tests/ground_truth.js. Runs the actor against six domains (monday, retool, asana, webflow, calendly, zapier) whose marketing sites carry detectable fingerprints for HubSpot, Marketo, or Intercom (two of each for balanced coverage). Gate: five of six must pass before any apify push. Replaces the prior ad-hoc "all false on every domain" production verification.
README Coverage and limitations section documenting bot-protected domains (Cloudflare Enterprise, Akamai, PerimeterX), backend-only tools with no web pixel, and vendor-self-site patterns.

Removed

outreach.io, apollo.io, gong.io, drift.com, clay.com are no longer valid ground truth targets for self-detection. Their marketing sites run someone else's stack (typically Marketo or HubSpot) and their own products have no public-site fingerprint. Documented in README.

[0.2.0] - 2026-04-15

Added

uses_marketo boolean field: Marketo was already detected via marketing_automation_detected but had no boolean output. gtm_tool_count now correctly increments when Marketo is the only GTM tool present.
Multi-page crawling: actor now crawls up to 2 additional pages per domain (pricing, product) after the homepage. Signals detected on any crawled page count as detected. Controlled via the new crawl_additional_pages input (default: true).
CDN obfuscation fallback: cookie names and JS global variables are now checked as primary signals before script src URL patterns. Improves detection accuracy for companies routing scripts through Cloudflare Workers, Fastly, or custom CDN configurations.
crawl_additional_pages input field (boolean, default true): set to false to crawl homepage only for faster volume runs.

Changed

Detection priority order updated across all tools: cookies first, JS globals second, script src third.
gtm_tool_count now includes uses_marketo in its total.

Removed

uses_linkedin_sales_nav removed from output schema. LinkedIn Sales Navigator is an internal tool with no reliable client-side fingerprint. Previous detection signals produced frequent false negatives. Documented as out of scope.

[0.1.0] - 2026-04-07

Added

Initial release to Apify Store.
Playwright-based GTM tool detection for 15 tools: HubSpot, Salesforce, Clay, Apollo, Outreach, Gong, ZoomInfo, LinkedIn Sales Nav (removed in 0.2.0), Drift, Intercom, Marketo, Pardot, Salesloft, Instantly, Lemlist.
Flat boolean output: uses_hubspot, uses_salesforce, uses_clay, uses_apollo, uses_outreach, uses_gong, uses_zoominfo, uses_drift, uses_intercom.
CRM detection string: crm_detected.
Sequencer detection string: seq_tool_detected.
Marketing automation detection string: marketing_automation_detected.
GTM tool count integer: gtm_tool_count.
Signal strength string: tech_stack_signal (high / medium / low).
Error handling: detection_error boolean with graceful null output on timeout.

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Job Posting Monitor

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Tech Stack Signal Detector

Changelog

[0.2.1] - 2026-04-20

Fixed

Changed

Added

Removed

[0.2.0] - 2026-04-15

Added

Changed

Removed

[0.1.0] - 2026-04-07

Added

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Changelog

[0.2.1] - 2026-04-20

Fixed

Changed

Added

Removed

[0.2.0] - 2026-04-15

Added

Changed

Removed

[0.1.0] - 2026-04-07

Added