Signals are the trigger layer: the thing that starts an agent's loop rather than something it calls halfway through. Coverage here is decent and the access gate is the harder problem.
Tools that try to answer "who is about to buy, and how do you know." The category splits cleanly into two eras: the legacy enterprise intent-data incumbents (6sense, Demandbase, Bombora, HG Insights) sold on annual contracts with no self-serve path, and a newer wave of visitor-ID/job-change/ API-first tools (RB2B, Warmly, Crustdata, TheirStack, PredictLeads) built for solo operators with free tiers and documented MCP servers.
The ones an agent can call
- Leadfeeder (product line rebranded/merged under Dealfront; dealfront.com redirects to leadfeeder.com) Official MCP · Free to start
Identifies companies visiting a website via IP-to-company matching, tracks page-level visit behavior, and surfaces intent signals plus verified... - PredictLeads Official MCP · Free to start
Aggregates five signal categories (job openings, technology detections, news events, business connections, firmographics) across 129M companies in... - TheirStack Official MCP · Free to start
Tracks 233M+ job postings across 195+ countries and 33,000+ technologies to detect hiring signals, technographic footprint, and buying-intent signals... - Warmly (Warmly.ai) Official MCP · Free to start
De-anonymizes website visitors at the person and company level from site traffic, and aggregates first-party (web/product/CRM), second-party... - Crustdata Official MCP · Gate unknown
A real-time API for company and person firmographic/growth data (headcount trends, funding, tech stack, web traffic, social signals), positioned as... - Factors.ai Official MCP · Paid, self-serve
De-anonymizes website visitors and tracks named-account behavior (page visits, LinkedIn/Google ad engagement, email/content engagement, third-party... - RB2B Official MCP · Paid, self-serve
Deanonymizes B2B website traffic by matching visitor IP/device identifiers and first/third-party data against a contact database to reveal the... - Snitcher Official MCP · Paid, self-serve
Identifies anonymous website visitor companies via IP-to-company database matching, tracks on-site behavior (pages viewed, session length, return... - Sumble Official MCP · Paid, self-serve
Builds an account-intelligence knowledge graph by continuously scanning tens of millions of public sources (job boards, company sites, social media,... - 6sense Official MCP · Enterprise only
Detects B2B buying intent by combining IP-based website deanonymization, a proprietary third-party intent/content-consumption network... - Common Room Official MCP · Enterprise only
Aggregates buyer/community engagement signals - Slack, Discord, GitHub activity (stars, PRs, issues), product usage, and third-party intent data... - Crossbeam Official MCP · Enterprise only
Compares your account list against your partners' account lists to surface overlaps, partner-shared contacts, and warm introduction paths for... - Demandbase (Demandbase One) Official MCP · Enterprise only
Identifies and scores in-market B2B accounts by combining IP/website deanonymization, a global firmographic/technographic database, and intent-signal... - G2 Buyer Intent Official MCP · Enterprise only
Surfaces which companies are researching your product and your competitors on G2's review marketplace, plus the review and category data behind those... - HG Insights (Phoenix platform) Official MCP · Enterprise only
Aggregates B2B technographic data (software/tech a company runs, sourced from job postings, web crawling, public filings, partner feeds),... - Similarweb Official MCP · Enterprise only
Web, app and market intelligence platform that estimates traffic, audience, keyword and competitive metrics for any domain, used in sales as an... - UserGems Official MCP · Enterprise only
Tracks job changes of known contacts (past customers/champions moving to new companies) plus 30+ other native signals (new hires, promotions,... - Trigify (Trigify.io) Community MCP · Paid, self-serve
Monitors LinkedIn, X/Twitter, Reddit, YouTube, and podcasts for keyword mentions and engagement (likes, comments, shares, job changes), mapping who...
The rest of the category
10 entries here had no server found, or the check could not settle it. That is not a
verdict on the tools. It is a statement about what an agent can reach today.
- Centralize MCP unknown · Free to start
A relationship-intelligence and account-mapping tool that builds org charts and buying-committee maps for a rep's accounts automatically from their... - Albacross No MCP found · Paid, self-serve
Identifies which companies visit a website via IP-to-company matching, tracks on-site and off-site behavioral/intent signals, and enriches identified... - Clearbit Reveal (rebranded: HubSpot Breeze Intelligence) No MCP found · Paid, self-serve
Identifies companies visiting a website via IP-to-company matching, then enriches contact/company CRM records with firmographic data (employee count,... - Intently (getintently.com) No MCP found · Paid, self-serve
Scrapes LinkedIn in real time (without an official API or user accounts) to extract profile/company data, competitor followers, and post... - Keyplay No MCP found · Paid, self-serve
Builds a mathematical ICP model from a company's existing best customers, then scores and ranks a universe of target accounts against that model... - Koala No MCP found · Paid, self-serve
Identified and scored anonymous B2B website visitors by matching visitor IPs/first-party signals against 30+ data sources, then triggered... - Live Data Technologies No MCP found · Paid, self-serve
Tracks real-time job changes and employment history for ~80M white-collar professionals by continuously re-verifying identities against open-web and... - Vector (vector.co) No MCP found · Paid, self-serve
Identifies named individual buyers (not just companies) by resolving anonymous website visitors and ad-click engagement to real contacts, then tracks... - Bombora (Company Surge) No MCP found · Enterprise only
Detects which companies are actively researching specific B2B topics by aggregating content-consumption data (article reads, downloads) across a... - Champify No MCP found · Enterprise only
Tracks job changes of a company's past customers and champions as they move to new roles/companies, and flags closed-lost opportunities for...
The gate, which is the second question
Counted 2026-08-25. Source file 05-signals-intent-abm.md, content sha256
e3bfa54c3797c2bb...
Sources
Every number on this page is generated from directory.json at build time and carries
the date it was baked: 2026-08-25. Nothing is typed by hand, nothing is rounded, and nothing is
estimated. The underlying data is published in full. Where the honest
answer is a zero, the zero is printed.
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