6sense

Category: Lead Gen/Data

Account intelligence and intent, now a signal layer.

6sense identifies which accounts are researching your category before they contact you, combining its own intent data with website de-anonymisation, predictive models for buying stage and fit, and an advertising platform for reaching those accounts. Sales intelligence and contact data sit alongside. Its positioning shifted during 2026 from a platform you log into toward a signal layer feeding other systems, with a conversational interface opened to customers at no extra cost. There is a first-party MCP server with OAuth and per-user authorisation, listed in both the Claude and OpenAI connector directories, but it is in gated beta, read-only, and a wrapper over its assistant rather than full data access. Unlocking contacts through it consumes sales intelligence credits.

Our verdict

Strong account intelligence and the intent data is among the better sets available, which matters if your buying cycles are long enough that knowing someone is in-market early genuinely changes the outcome. Repositioning as a signal layer rather than another dashboard is the right direction. The MCP server is real but worth understanding properly: it is beta, read-only, and wraps the assistant rather than exposing underlying data, so it is a conversational veneer rather than programmatic access. The UK compliance point applies to both this and Demandbase and is worth stating plainly: the lawful basis for the contact database is legitimate interests rather than consent, and more importantly you are the controller for the de-anonymisation tag on your own site, which under ICO guidance should not fire before consent. That caps your effective intent coverage at your consent rate, which most vendors do not mention. Pricing is quote-only, data residency unverified, and there has been significant leadership turnover.

Best for: B2B teams with long buying cycles and defined target accounts, who will act on intent signals rather than just report them.

Pros

  • Among the better intent datasets for identifying in-market accounts early
  • First-party MCP server in the Claude and OpenAI connector directories
  • Conversational interface opened to customers at no extra cost
  • Predictive buying-stage and fit scoring, not just raw intent
  • Advertising platform included for reaching identified accounts

Cons

  • The MCP server is beta, read-only and wraps the assistant rather than the data
  • You are the controller for the site tag, which should not fire before consent
  • That consent requirement caps your effective intent coverage
  • Contact unlocks through MCP consume sales intelligence credits
  • Quote-only pricing and unverified data residency
  • Significant leadership turnover through 2025 and 2026

Pricing: Pricing on application (Enterprise)

Rating: 4/5